./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:53:35,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:53:35,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:53:35,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:53:35,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:53:35,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:53:35,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:53:35,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:53:35,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:53:35,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:53:35,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:53:35,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:53:35,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:53:35,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:53:35,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:53:35,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:53:35,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:53:35,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:53:35,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:53:35,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:53:35,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:53:35,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:53:35,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:53:35,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:53:35,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:53:35,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:53:35,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:53:35,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:53:35,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:53:35,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:53:35,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:53:35,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:53:35,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:53:35,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:53:35,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:53:35,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:53:35,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:53:35,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:53:35,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:53:35,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:53:35,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:53:35,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:53:35,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:53:35,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:53:35,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:53:35,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:53:35,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:53:35,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:53:35,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:53:35,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:53:35,768 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:53:35,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:53:35,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:53:35,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:53:35,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:53:35,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:53:35,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:53:35,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:53:35,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:53:35,769 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:53:35,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:53:35,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:53:35,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:53:35,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:53:35,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:53:35,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:53:35,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:53:35,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:53:35,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:53:35,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:53:35,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:53:35,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:53:35,772 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:53:35,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:53:35,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:53:35,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:53:35,772 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_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2021-12-06 17:53:35,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:53:35,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:53:35,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:53:35,993 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:53:35,994 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:53:35,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2021-12-06 17:53:36,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/data/67872d9c1/8d66ca0d0d1e4a7c90120c123d210798/FLAG4189aa8c6 [2021-12-06 17:53:36,405 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:53:36,406 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2021-12-06 17:53:36,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/data/67872d9c1/8d66ca0d0d1e4a7c90120c123d210798/FLAG4189aa8c6 [2021-12-06 17:53:36,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/data/67872d9c1/8d66ca0d0d1e4a7c90120c123d210798 [2021-12-06 17:53:36,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:53:36,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:53:36,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:53:36,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:53:36,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:53:36,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b94c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36, skipping insertion in model container [2021-12-06 17:53:36,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:53:36,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:53:36,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2021-12-06 17:53:36,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:53:36,599 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:53:36,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2021-12-06 17:53:36,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:53:36,634 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:53:36,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36 WrapperNode [2021-12-06 17:53:36,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:53:36,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:53:36,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:53:36,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:53:36,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,669 INFO L137 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2021-12-06 17:53:36,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:53:36,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:53:36,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:53:36,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:53:36,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:53:36,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:53:36,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:53:36,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:53:36,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (1/1) ... [2021-12-06 17:53:36,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:53:36,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:53:36,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:53:36,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f9625a-47f2-437b-835f-dd60504c5725/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:53:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:53:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:53:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:53:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:53:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-06 17:53:36,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-06 17:53:36,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-06 17:53:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-06 17:53:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-06 17:53:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-06 17:53:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-06 17:53:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-06 17:53:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:53:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-12-06 17:53:36,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-12-06 17:53:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-12-06 17:53:36,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-12-06 17:53:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 17:53:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 17:53:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:53:36,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:53:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:53:36,763 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 17:53:36,846 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:53:36,847 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:53:37,094 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:53:37,149 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:53:37,149 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 17:53:37,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:53:37 BoogieIcfgContainer [2021-12-06 17:53:37,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:53:37,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:53:37,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:53:37,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:53:37,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:53:36" (1/3) ... [2021-12-06 17:53:37,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a263d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:53:37, skipping insertion in model container [2021-12-06 17:53:37,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:53:36" (2/3) ... [2021-12-06 17:53:37,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a263d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:53:37, skipping insertion in model container [2021-12-06 17:53:37,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:53:37" (3/3) ... [2021-12-06 17:53:37,156 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2021-12-06 17:53:37,160 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 17:53:37,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:53:37,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:53:37,161 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 17:53:37,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,193 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,194 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,195 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,195 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,195 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,195 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,195 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,195 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,195 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,195 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,196 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,196 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,196 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,196 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,196 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,196 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,196 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,201 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,202 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,202 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,202 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,202 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,203 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,203 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,203 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,203 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,203 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,203 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,203 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,203 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,204 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,207 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,207 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,207 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,207 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,207 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,207 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,208 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,209 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,209 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,209 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,209 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,209 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,209 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,209 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,210 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,211 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,211 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,211 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,211 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,211 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,211 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,212 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 17:53:37,215 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-12-06 17:53:37,250 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:53:37,256 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:53:37,256 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-06 17:53:37,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 188 transitions, 424 flow [2021-12-06 17:53:37,324 INFO L129 PetriNetUnfolder]: 2/182 cut-off events. [2021-12-06 17:53:37,324 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-12-06 17:53:37,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 182 events. 2/182 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2021-12-06 17:53:37,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 188 transitions, 424 flow [2021-12-06 17:53:37,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 165 transitions, 366 flow [2021-12-06 17:53:37,358 INFO L129 PetriNetUnfolder]: 2/164 cut-off events. [2021-12-06 17:53:37,358 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-12-06 17:53:37,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 17:53:37,359 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:53:37,359 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 17:53:37,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:53:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1163564544, now seen corresponding path program 1 times [2021-12-06 17:53:37,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:53:37,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067954148] [2021-12-06 17:53:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:53:37,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:53:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:53:38,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:53:38,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067954148] [2021-12-06 17:53:38,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067954148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:53:38,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:53:38,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:53:38,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519231529] [2021-12-06 17:53:38,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:53:38,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:53:38,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:53:38,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:53:38,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:53:38,257 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 188 [2021-12-06 17:53:38,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 165 transitions, 366 flow. Second operand has 10 states, 10 states have (on average 138.9) internal successors, (1389), 10 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:53:38,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 17:53:38,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 188 [2021-12-06 17:53:38,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 17:53:57,355 INFO L129 PetriNetUnfolder]: 156365/219579 cut-off events. [2021-12-06 17:53:57,355 INFO L130 PetriNetUnfolder]: For 29442/29510 co-relation queries the response was YES. [2021-12-06 17:53:58,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 438504 conditions, 219579 events. 156365/219579 cut-off events. For 29442/29510 co-relation queries the response was YES. Maximal size of possible extension queue 7240. Compared 1673362 event pairs, 112309 based on Foata normal form. 3/216432 useless extension candidates. Maximal degree in co-relation 354579. Up to 102416 conditions per place. [2021-12-06 17:53:58,863 INFO L132 encePairwiseOnDemand]: 169/188 looper letters, 103 selfloop transitions, 17 changer transitions 14/246 dead transitions. [2021-12-06 17:53:58,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 246 transitions, 853 flow [2021-12-06 17:53:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:53:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 17:53:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1612 transitions. [2021-12-06 17:53:58,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7794970986460348 [2021-12-06 17:53:58,882 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1612 transitions. [2021-12-06 17:53:58,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1612 transitions. [2021-12-06 17:53:58,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 17:53:58,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1612 transitions. [2021-12-06 17:53:58,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.54545454545453) internal successors, (1612), 11 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:53:58,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 188.0) internal successors, (2256), 12 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:53:58,903 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 188.0) internal successors, (2256), 12 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:53:58,904 INFO L186 Difference]: Start difference. First operand has 182 places, 165 transitions, 366 flow. Second operand 11 states and 1612 transitions. [2021-12-06 17:53:58,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 246 transitions, 853 flow [2021-12-06 17:53:59,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 246 transitions, 791 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-12-06 17:53:59,205 INFO L242 Difference]: Finished difference. Result has 185 places, 172 transitions, 439 flow [2021-12-06 17:53:59,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=439, PETRI_PLACES=185, PETRI_TRANSITIONS=172} [2021-12-06 17:53:59,209 INFO L334 CegarLoopForPetriNet]: 182 programPoint places, 3 predicate places. [2021-12-06 17:53:59,209 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 172 transitions, 439 flow [2021-12-06 17:53:59,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 138.9) internal successors, (1389), 10 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:53:59,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 17:53:59,211 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:53:59,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:53:59,211 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 17:53:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:53:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash 191732472, now seen corresponding path program 2 times [2021-12-06 17:53:59,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:53:59,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203693840] [2021-12-06 17:53:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:53:59,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:53:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:53:59,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:53:59,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203693840] [2021-12-06 17:53:59,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203693840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:53:59,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:53:59,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 17:53:59,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628525663] [2021-12-06 17:53:59,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:53:59,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:53:59,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:53:59,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:53:59,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:53:59,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 188 [2021-12-06 17:53:59,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 172 transitions, 439 flow. Second operand has 12 states, 12 states have (on average 132.58333333333334) internal successors, (1591), 12 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:53:59,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 17:53:59,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 188 [2021-12-06 17:53:59,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 17:54:18,478 INFO L129 PetriNetUnfolder]: 154565/222650 cut-off events. [2021-12-06 17:54:18,478 INFO L130 PetriNetUnfolder]: For 92325/92376 co-relation queries the response was YES. [2021-12-06 17:54:19,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 516389 conditions, 222650 events. 154565/222650 cut-off events. For 92325/92376 co-relation queries the response was YES. Maximal size of possible extension queue 7673. Compared 1786669 event pairs, 93610 based on Foata normal form. 1/218524 useless extension candidates. Maximal degree in co-relation 516376. Up to 134788 conditions per place. [2021-12-06 17:54:19,922 INFO L132 encePairwiseOnDemand]: 167/188 looper letters, 91 selfloop transitions, 27 changer transitions 57/281 dead transitions. [2021-12-06 17:54:19,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 281 transitions, 1122 flow [2021-12-06 17:54:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:54:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 17:54:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1702 transitions. [2021-12-06 17:54:19,928 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7544326241134752 [2021-12-06 17:54:19,928 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1702 transitions. [2021-12-06 17:54:19,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1702 transitions. [2021-12-06 17:54:19,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 17:54:19,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1702 transitions. [2021-12-06 17:54:19,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.83333333333334) internal successors, (1702), 12 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:19,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 188.0) internal successors, (2444), 13 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:19,941 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 188.0) internal successors, (2444), 13 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:19,941 INFO L186 Difference]: Start difference. First operand has 185 places, 172 transitions, 439 flow. Second operand 12 states and 1702 transitions. [2021-12-06 17:54:19,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 281 transitions, 1122 flow [2021-12-06 17:54:20,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 281 transitions, 1088 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-12-06 17:54:20,007 INFO L242 Difference]: Finished difference. Result has 191 places, 189 transitions, 609 flow [2021-12-06 17:54:20,007 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=609, PETRI_PLACES=191, PETRI_TRANSITIONS=189} [2021-12-06 17:54:20,008 INFO L334 CegarLoopForPetriNet]: 182 programPoint places, 9 predicate places. [2021-12-06 17:54:20,008 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 189 transitions, 609 flow [2021-12-06 17:54:20,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 132.58333333333334) internal successors, (1591), 12 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:20,009 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 17:54:20,009 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:54:20,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:54:20,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 17:54:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:54:20,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1824326984, now seen corresponding path program 3 times [2021-12-06 17:54:20,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:54:20,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134554295] [2021-12-06 17:54:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:54:20,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:54:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:54:20,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:54:20,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134554295] [2021-12-06 17:54:20,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134554295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:54:20,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:54:20,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:54:20,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794743207] [2021-12-06 17:54:20,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:54:20,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:54:20,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:54:20,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:54:20,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:54:20,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 188 [2021-12-06 17:54:20,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 189 transitions, 609 flow. Second operand has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:20,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 17:54:20,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 188 [2021-12-06 17:54:20,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 17:54:38,933 INFO L129 PetriNetUnfolder]: 113917/203846 cut-off events. [2021-12-06 17:54:38,933 INFO L130 PetriNetUnfolder]: For 122545/148713 co-relation queries the response was YES. [2021-12-06 17:54:40,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 470687 conditions, 203846 events. 113917/203846 cut-off events. For 122545/148713 co-relation queries the response was YES. Maximal size of possible extension queue 10632. Compared 2351869 event pairs, 26695 based on Foata normal form. 2142/197254 useless extension candidates. Maximal degree in co-relation 470670. Up to 45162 conditions per place. [2021-12-06 17:54:41,107 INFO L132 encePairwiseOnDemand]: 172/188 looper letters, 93 selfloop transitions, 33 changer transitions 0/264 dead transitions. [2021-12-06 17:54:41,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 264 transitions, 1078 flow [2021-12-06 17:54:41,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:54:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 17:54:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1092 transitions. [2021-12-06 17:54:41,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8297872340425532 [2021-12-06 17:54:41,111 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1092 transitions. [2021-12-06 17:54:41,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1092 transitions. [2021-12-06 17:54:41,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 17:54:41,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1092 transitions. [2021-12-06 17:54:41,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:41,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:41,116 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:41,116 INFO L186 Difference]: Start difference. First operand has 191 places, 189 transitions, 609 flow. Second operand 7 states and 1092 transitions. [2021-12-06 17:54:41,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 264 transitions, 1078 flow [2021-12-06 17:54:42,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 264 transitions, 1028 flow, removed 13 selfloop flow, removed 8 redundant places. [2021-12-06 17:54:42,222 INFO L242 Difference]: Finished difference. Result has 187 places, 213 transitions, 749 flow [2021-12-06 17:54:42,223 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=749, PETRI_PLACES=187, PETRI_TRANSITIONS=213} [2021-12-06 17:54:42,224 INFO L334 CegarLoopForPetriNet]: 182 programPoint places, 5 predicate places. [2021-12-06 17:54:42,224 INFO L470 AbstractCegarLoop]: Abstraction has has 187 places, 213 transitions, 749 flow [2021-12-06 17:54:42,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:42,224 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 17:54:42,225 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:54:42,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:54:42,225 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 17:54:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:54:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1824746584, now seen corresponding path program 4 times [2021-12-06 17:54:42,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:54:42,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634309176] [2021-12-06 17:54:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:54:42,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:54:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:54:42,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:54:42,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634309176] [2021-12-06 17:54:42,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634309176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:54:42,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:54:42,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:54:42,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566374888] [2021-12-06 17:54:42,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:54:42,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:54:42,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:54:42,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:54:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:54:42,361 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 188 [2021-12-06 17:54:42,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 213 transitions, 749 flow. Second operand has 9 states, 9 states have (on average 143.88888888888889) internal successors, (1295), 9 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:54:42,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 17:54:42,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 188 [2021-12-06 17:54:42,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 17:54:59,937 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([569] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][218], [Black: 240#(= (* 256 (div ~b~0 256)) ~b~0), Black: 238#(and (= (* 256 (div ~b~0 256)) ~b~0) (<= ~t~0 ~s~0)), Black: 215#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 239#(and (<= ~m1~0 ~s~0) (= (* 256 (div ~b~0 256)) ~b~0)), 77#L93true, 131#L131true, Black: 212#(and (<= ~x~0 0) (= (* 256 (div ~b~0 256)) ~b~0)), 269#(<= (+ ~s~0 1) ~t~0), 102#L74true, 62#L181-4true, Black: 268#(<= ~s~0 ~t~0), Black: 274#(and (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m2~0)), 76#L147true, 19#L115true, 285#(<= (+ 3 ~s~0) ~t~0), 142#L55true]) [2021-12-06 17:54:59,937 INFO L384 tUnfolder$Statistics]: this new event has 116 ancestors and is cut-off event [2021-12-06 17:54:59,937 INFO L387 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2021-12-06 17:54:59,937 INFO L387 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2021-12-06 17:54:59,937 INFO L387 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2021-12-06 17:55:06,569 INFO L129 PetriNetUnfolder]: 162594/257837 cut-off events. [2021-12-06 17:55:06,569 INFO L130 PetriNetUnfolder]: For 295455/363357 co-relation queries the response was YES. [2021-12-06 17:55:08,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 786597 conditions, 257837 events. 162594/257837 cut-off events. For 295455/363357 co-relation queries the response was YES. Maximal size of possible extension queue 13757. Compared 2630045 event pairs, 28200 based on Foata normal form. 6642/245899 useless extension candidates. Maximal degree in co-relation 440136. Up to 67747 conditions per place. [2021-12-06 17:55:09,570 INFO L132 encePairwiseOnDemand]: 172/188 looper letters, 124 selfloop transitions, 124 changer transitions 0/386 dead transitions. [2021-12-06 17:55:09,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 386 transitions, 2001 flow [2021-12-06 17:55:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:55:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 17:55:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1422 transitions. [2021-12-06 17:55:09,575 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8404255319148937 [2021-12-06 17:55:09,575 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1422 transitions. [2021-12-06 17:55:09,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1422 transitions. [2021-12-06 17:55:09,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 17:55:09,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1422 transitions. [2021-12-06 17:55:09,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.0) internal successors, (1422), 9 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:09,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:09,582 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:09,583 INFO L186 Difference]: Start difference. First operand has 187 places, 213 transitions, 749 flow. Second operand 9 states and 1422 transitions. [2021-12-06 17:55:09,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 386 transitions, 2001 flow [2021-12-06 17:55:09,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 386 transitions, 1997 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 17:55:09,634 INFO L242 Difference]: Finished difference. Result has 197 places, 305 transitions, 1737 flow [2021-12-06 17:55:09,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1737, PETRI_PLACES=197, PETRI_TRANSITIONS=305} [2021-12-06 17:55:09,635 INFO L334 CegarLoopForPetriNet]: 182 programPoint places, 15 predicate places. [2021-12-06 17:55:09,635 INFO L470 AbstractCegarLoop]: Abstraction has has 197 places, 305 transitions, 1737 flow [2021-12-06 17:55:09,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 143.88888888888889) internal successors, (1295), 9 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:09,636 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 17:55:09,636 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:55:09,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:55:09,637 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 17:55:09,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:55:09,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1059900200, now seen corresponding path program 5 times [2021-12-06 17:55:09,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:55:09,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459995510] [2021-12-06 17:55:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:55:09,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:55:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:55:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:55:09,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:55:09,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459995510] [2021-12-06 17:55:09,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459995510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:55:09,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:55:09,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:55:09,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112644352] [2021-12-06 17:55:09,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:55:09,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:55:09,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:55:09,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:55:09,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:55:09,753 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 188 [2021-12-06 17:55:09,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 305 transitions, 1737 flow. Second operand has 8 states, 8 states have (on average 144.5) internal successors, (1156), 8 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:09,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 17:55:09,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 188 [2021-12-06 17:55:09,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 17:55:31,338 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([575] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][310], [Black: 240#(= (* 256 (div ~b~0 256)) ~b~0), 26#L134true, Black: 282#(<= ~s~0 ~t~0), Black: 283#(<= (+ ~s~0 1) ~t~0), Black: 238#(and (= (* 256 (div ~b~0 256)) ~b~0) (<= ~t~0 ~s~0)), Black: 215#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 239#(and (<= ~m1~0 ~s~0) (= (* 256 (div ~b~0 256)) ~b~0)), Black: 290#(and (<= (+ 3 ~s~0) ~t~0) (<= (+ 2 ~s~0) ~m6~0)), 102#L74true, Black: 212#(and (<= ~x~0 0) (= (* 256 (div ~b~0 256)) ~b~0)), 6#L45true, 166#L112true, 62#L181-4true, 284#(<= (+ 2 ~s~0) ~t~0), 54#L150true, Black: 268#(<= ~s~0 ~t~0), Black: 274#(and (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m2~0)), 78#L96true, 301#(<= (+ ~s~0 1) ~t~0), 223#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), 264#true]) [2021-12-06 17:55:31,339 INFO L384 tUnfolder$Statistics]: this new event has 115 ancestors and is cut-off event [2021-12-06 17:55:31,339 INFO L387 tUnfolder$Statistics]: existing Event has 115 ancestors and is cut-off event [2021-12-06 17:55:31,339 INFO L387 tUnfolder$Statistics]: existing Event has 115 ancestors and is cut-off event [2021-12-06 17:55:31,339 INFO L387 tUnfolder$Statistics]: existing Event has 115 ancestors and is cut-off event [2021-12-06 17:55:33,072 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([575] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][310], [Black: 240#(= (* 256 (div ~b~0 256)) ~b~0), 26#L134true, Black: 282#(<= ~s~0 ~t~0), Black: 283#(<= (+ ~s~0 1) ~t~0), Black: 238#(and (= (* 256 (div ~b~0 256)) ~b~0) (<= ~t~0 ~s~0)), Black: 290#(and (<= (+ 3 ~s~0) ~t~0) (<= (+ 2 ~s~0) ~m6~0)), Black: 239#(and (<= ~m1~0 ~s~0) (= (* 256 (div ~b~0 256)) ~b~0)), Black: 215#(and (<= ~b~0 0) (<= 0 ~b~0)), 102#L74true, Black: 212#(and (<= ~x~0 0) (= (* 256 (div ~b~0 256)) ~b~0)), 166#L112true, 62#L181-4true, 284#(<= (+ 2 ~s~0) ~t~0), 54#L150true, 115#L49true, Black: 268#(<= ~s~0 ~t~0), Black: 274#(and (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m2~0)), 78#L96true, 301#(<= (+ ~s~0 1) ~t~0), 223#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), 264#true]) [2021-12-06 17:55:33,072 INFO L384 tUnfolder$Statistics]: this new event has 116 ancestors and is cut-off event [2021-12-06 17:55:33,072 INFO L387 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2021-12-06 17:55:33,072 INFO L387 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2021-12-06 17:55:33,072 INFO L387 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2021-12-06 17:55:43,226 INFO L129 PetriNetUnfolder]: 182921/308335 cut-off events. [2021-12-06 17:55:43,226 INFO L130 PetriNetUnfolder]: For 832355/912486 co-relation queries the response was YES. [2021-12-06 17:55:45,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1147958 conditions, 308335 events. 182921/308335 cut-off events. For 832355/912486 co-relation queries the response was YES. Maximal size of possible extension queue 16720. Compared 3453316 event pairs, 34784 based on Foata normal form. 15266/306555 useless extension candidates. Maximal degree in co-relation 354070. Up to 73674 conditions per place. [2021-12-06 17:55:47,320 INFO L132 encePairwiseOnDemand]: 172/188 looper letters, 166 selfloop transitions, 161 changer transitions 0/465 dead transitions. [2021-12-06 17:55:47,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 465 transitions, 3469 flow [2021-12-06 17:55:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:55:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-06 17:55:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1261 transitions. [2021-12-06 17:55:47,324 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8384308510638298 [2021-12-06 17:55:47,324 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1261 transitions. [2021-12-06 17:55:47,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1261 transitions. [2021-12-06 17:55:47,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 17:55:47,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1261 transitions. [2021-12-06 17:55:47,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 157.625) internal successors, (1261), 8 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:47,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:47,330 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:47,330 INFO L186 Difference]: Start difference. First operand has 197 places, 305 transitions, 1737 flow. Second operand 8 states and 1261 transitions. [2021-12-06 17:55:47,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 465 transitions, 3469 flow [2021-12-06 17:55:51,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 465 transitions, 3365 flow, removed 50 selfloop flow, removed 2 redundant places. [2021-12-06 17:55:51,159 INFO L242 Difference]: Finished difference. Result has 206 places, 391 transitions, 3101 flow [2021-12-06 17:55:51,160 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3101, PETRI_PLACES=206, PETRI_TRANSITIONS=391} [2021-12-06 17:55:51,160 INFO L334 CegarLoopForPetriNet]: 182 programPoint places, 24 predicate places. [2021-12-06 17:55:51,160 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 391 transitions, 3101 flow [2021-12-06 17:55:51,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.5) internal successors, (1156), 8 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:51,161 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 17:55:51,161 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:55:51,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:55:51,162 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 17:55:51,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:55:51,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1125046710, now seen corresponding path program 6 times [2021-12-06 17:55:51,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:55:51,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133758471] [2021-12-06 17:55:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:55:51,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:55:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:55:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:55:51,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:55:51,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133758471] [2021-12-06 17:55:51,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133758471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:55:51,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:55:51,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:55:51,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909048049] [2021-12-06 17:55:51,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:55:51,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:55:51,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:55:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:55:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:55:51,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 188 [2021-12-06 17:55:51,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 391 transitions, 3101 flow. Second operand has 11 states, 11 states have (on average 143.0) internal successors, (1573), 11 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:55:51,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 17:55:51,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 188 [2021-12-06 17:55:51,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 17:56:29,711 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([575] L147-->L150: Formula: (= v_~b~0_9 (ite (= (ite (or (not (= (mod v_~b~0_10 256) 0)) (= v_~x~0_7 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_10, ~x~0=v_~x~0_7} OutVars{~b~0=v_~b~0_9, ~x~0=v_~x~0_7} AuxVars[] AssignedVars[~b~0][414], [Black: 240#(= (* 256 (div ~b~0 256)) ~b~0), Black: 282#(<= ~s~0 ~t~0), Black: 283#(<= (+ ~s~0 1) ~t~0), Black: 238#(and (= (* 256 (div ~b~0 256)) ~b~0) (<= ~t~0 ~s~0)), Black: 290#(and (<= (+ 3 ~s~0) ~t~0) (<= (+ 2 ~s~0) ~m6~0)), 14#L182-2true, 164#L128true, Black: 239#(and (<= ~m1~0 ~s~0) (= (* 256 (div ~b~0 256)) ~b~0)), Black: 215#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 212#(and (<= ~x~0 0) (= (* 256 (div ~b~0 256)) ~b~0)), 102#L74true, 320#(<= (+ 3 ~s~0) ~t~0), 166#L112true, 284#(<= (+ 2 ~s~0) ~t~0), 54#L150true, Black: 268#(<= ~s~0 ~t~0), Black: 274#(and (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m2~0)), Black: 302#(<= (+ 2 ~s~0) ~t~0), 78#L96true, Black: 300#(<= ~s~0 ~t~0), Black: 307#(and (<= (+ 2 ~s~0) ~m5~0) (<= (+ 2 ~s~0) ~t~0)), 301#(<= (+ ~s~0 1) ~t~0), 264#true]) [2021-12-06 17:56:29,711 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2021-12-06 17:56:29,711 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2021-12-06 17:56:29,711 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2021-12-06 17:56:29,711 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2021-12-06 17:56:32,917 INFO L129 PetriNetUnfolder]: 204445/327413 cut-off events. [2021-12-06 17:56:32,917 INFO L130 PetriNetUnfolder]: For 1685588/1799673 co-relation queries the response was YES. [2021-12-06 17:56:35,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1481804 conditions, 327413 events. 204445/327413 cut-off events. For 1685588/1799673 co-relation queries the response was YES. Maximal size of possible extension queue 17679. Compared 3465925 event pairs, 29165 based on Foata normal form. 26879/333104 useless extension candidates. Maximal degree in co-relation 434002. Up to 68714 conditions per place. [2021-12-06 17:56:37,749 INFO L132 encePairwiseOnDemand]: 172/188 looper letters, 154 selfloop transitions, 463 changer transitions 2/757 dead transitions. [2021-12-06 17:56:37,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 757 transitions, 7701 flow [2021-12-06 17:56:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:56:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 17:56:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1899 transitions. [2021-12-06 17:56:37,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8417553191489362 [2021-12-06 17:56:37,755 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1899 transitions. [2021-12-06 17:56:37,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1899 transitions. [2021-12-06 17:56:37,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 17:56:37,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1899 transitions. [2021-12-06 17:56:37,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 158.25) internal successors, (1899), 12 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:56:37,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 188.0) internal successors, (2444), 13 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:56:37,763 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 188.0) internal successors, (2444), 13 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:56:37,763 INFO L186 Difference]: Start difference. First operand has 206 places, 391 transitions, 3101 flow. Second operand 12 states and 1899 transitions. [2021-12-06 17:56:37,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 757 transitions, 7701 flow [2021-12-06 17:56:43,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 757 transitions, 7697 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 17:56:43,932 INFO L242 Difference]: Finished difference. Result has 221 places, 647 transitions, 7638 flow [2021-12-06 17:56:43,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7638, PETRI_PLACES=221, PETRI_TRANSITIONS=647} [2021-12-06 17:56:43,933 INFO L334 CegarLoopForPetriNet]: 182 programPoint places, 39 predicate places. [2021-12-06 17:56:43,933 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 647 transitions, 7638 flow [2021-12-06 17:56:43,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 143.0) internal successors, (1573), 11 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:56:43,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 17:56:43,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:56:43,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:56:43,934 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 17:56:43,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:56:43,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1911258018, now seen corresponding path program 7 times [2021-12-06 17:56:43,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:56:43,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536797952] [2021-12-06 17:56:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:56:43,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:56:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:56:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:56:44,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:56:44,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536797952] [2021-12-06 17:56:44,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536797952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:56:44,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:56:44,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:56:44,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394638314] [2021-12-06 17:56:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:56:44,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:56:44,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:56:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:56:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:56:44,036 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 188 [2021-12-06 17:56:44,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 647 transitions, 7638 flow. Second operand has 9 states, 9 states have (on average 143.88888888888889) internal successors, (1295), 9 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:56:44,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 17:56:44,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 188 [2021-12-06 17:56:44,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 17:57:36,557 INFO L129 PetriNetUnfolder]: 204838/336968 cut-off events. [2021-12-06 17:57:36,557 INFO L130 PetriNetUnfolder]: For 2852486/2987364 co-relation queries the response was YES. [2021-12-06 17:57:39,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1767292 conditions, 336968 events. 204838/336968 cut-off events. For 2852486/2987364 co-relation queries the response was YES. Maximal size of possible extension queue 18227. Compared 3699610 event pairs, 32836 based on Foata normal form. 27388/342266 useless extension candidates. Maximal degree in co-relation 882659. Up to 88064 conditions per place. [2021-12-06 17:57:42,072 INFO L132 encePairwiseOnDemand]: 172/188 looper letters, 186 selfloop transitions, 547 changer transitions 0/871 dead transitions. [2021-12-06 17:57:42,073 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 871 transitions, 11535 flow [2021-12-06 17:57:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:57:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 17:57:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1581 transitions. [2021-12-06 17:57:42,077 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8409574468085106 [2021-12-06 17:57:42,077 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1581 transitions. [2021-12-06 17:57:42,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1581 transitions. [2021-12-06 17:57:42,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 17:57:42,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1581 transitions. [2021-12-06 17:57:42,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 158.1) internal successors, (1581), 10 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:57:42,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 188.0) internal successors, (2068), 11 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:57:42,087 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 188.0) internal successors, (2068), 11 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:57:42,087 INFO L186 Difference]: Start difference. First operand has 221 places, 647 transitions, 7638 flow. Second operand 10 states and 1581 transitions. [2021-12-06 17:57:42,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 871 transitions, 11535 flow [2021-12-06 17:58:33,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 871 transitions, 11315 flow, removed 108 selfloop flow, removed 2 redundant places. [2021-12-06 17:58:33,103 INFO L242 Difference]: Finished difference. Result has 230 places, 772 transitions, 10622 flow [2021-12-06 17:58:33,103 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=7480, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=422, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10622, PETRI_PLACES=230, PETRI_TRANSITIONS=772} [2021-12-06 17:58:33,104 INFO L334 CegarLoopForPetriNet]: 182 programPoint places, 48 predicate places. [2021-12-06 17:58:33,104 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 772 transitions, 10622 flow [2021-12-06 17:58:33,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 143.88888888888889) internal successors, (1295), 9 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:58:33,105 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 17:58:33,105 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:58:33,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:58:33,105 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 17:58:33,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:58:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1936053434, now seen corresponding path program 8 times [2021-12-06 17:58:33,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:58:33,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648811325] [2021-12-06 17:58:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:58:33,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:58:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:58:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:58:33,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:58:33,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648811325] [2021-12-06 17:58:33,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648811325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:58:33,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:58:33,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:58:33,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870794446] [2021-12-06 17:58:33,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:58:33,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:58:33,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:58:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:58:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:58:33,205 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 188 [2021-12-06 17:58:33,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 772 transitions, 10622 flow. Second operand has 10 states, 10 states have (on average 143.4) internal successors, (1434), 10 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:58:33,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 17:58:33,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 188 [2021-12-06 17:58:33,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 17:59:31,573 INFO L129 PetriNetUnfolder]: 206786/334702 cut-off events. [2021-12-06 17:59:31,573 INFO L130 PetriNetUnfolder]: For 3618544/3769730 co-relation queries the response was YES. [2021-12-06 17:59:34,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1922714 conditions, 334702 events. 206786/334702 cut-off events. For 3618544/3769730 co-relation queries the response was YES. Maximal size of possible extension queue 18592. Compared 3619817 event pairs, 26331 based on Foata normal form. 35363/348126 useless extension candidates. Maximal degree in co-relation 1039448. Up to 78720 conditions per place. [2021-12-06 17:59:37,388 INFO L132 encePairwiseOnDemand]: 172/188 looper letters, 153 selfloop transitions, 724 changer transitions 1/1016 dead transitions. [2021-12-06 17:59:37,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1016 transitions, 15129 flow [2021-12-06 17:59:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:59:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 17:59:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1900 transitions. [2021-12-06 17:59:37,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8421985815602837 [2021-12-06 17:59:37,392 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1900 transitions. [2021-12-06 17:59:37,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1900 transitions. [2021-12-06 17:59:37,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 17:59:37,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1900 transitions. [2021-12-06 17:59:37,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 158.33333333333334) internal successors, (1900), 12 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:59:37,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 188.0) internal successors, (2444), 13 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:59:37,400 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 188.0) internal successors, (2444), 13 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:59:37,400 INFO L186 Difference]: Start difference. First operand has 230 places, 772 transitions, 10622 flow. Second operand 12 states and 1900 transitions. [2021-12-06 17:59:37,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1016 transitions, 15129 flow [2021-12-06 18:00:20,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1016 transitions, 14045 flow, removed 22 selfloop flow, removed 7 redundant places. [2021-12-06 18:00:20,586 INFO L242 Difference]: Finished difference. Result has 237 places, 908 transitions, 13593 flow [2021-12-06 18:00:20,587 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=9757, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=588, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13593, PETRI_PLACES=237, PETRI_TRANSITIONS=908} [2021-12-06 18:00:20,588 INFO L334 CegarLoopForPetriNet]: 182 programPoint places, 55 predicate places. [2021-12-06 18:00:20,588 INFO L470 AbstractCegarLoop]: Abstraction has has 237 places, 908 transitions, 13593 flow [2021-12-06 18:00:20,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 143.4) internal successors, (1434), 10 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:00:20,589 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:00:20,589 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:00:20,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:00:20,589 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 18:00:20,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:00:20,589 INFO L85 PathProgramCache]: Analyzing trace with hash 331894686, now seen corresponding path program 9 times [2021-12-06 18:00:20,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:00:20,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945023782] [2021-12-06 18:00:20,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:00:20,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:00:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:00:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:00:20,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:00:20,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945023782] [2021-12-06 18:00:20,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945023782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:00:20,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:00:20,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 18:00:20,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974760884] [2021-12-06 18:00:20,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:00:20,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:00:20,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:00:20,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:00:20,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:00:20,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 188 [2021-12-06 18:00:20,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 908 transitions, 13593 flow. Second operand has 11 states, 11 states have (on average 143.0) internal successors, (1573), 11 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:00:20,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:00:20,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 188 [2021-12-06 18:00:20,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:01:05,674 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([551] L71-->L74: Formula: (= v_~b~0_1 (ite (= (ite (or (not (= (mod v_~b~0_2 256) 0)) (= v_~x~0_3 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_2, ~x~0=v_~x~0_3} OutVars{~b~0=v_~b~0_1, ~x~0=v_~x~0_3} AuxVars[] AssignedVars[~b~0][139], [Black: 240#(= (* 256 (div ~b~0 256)) ~b~0), Black: 238#(and (= (* 256 (div ~b~0 256)) ~b~0) (<= ~t~0 ~s~0)), Black: 239#(and (<= ~m1~0 ~s~0) (= (* 256 (div ~b~0 256)) ~b~0)), 302#(<= (+ 2 ~s~0) ~t~0), 102#L74true, 321#(<= (+ ~s~0 4) ~t~0), Black: 329#(and (<= (+ 3 ~s~0) ~m5~0) (<= (+ ~s~0 4) ~t~0)), 54#L150true, Black: 317#(<= ~s~0 ~t~0), Black: 320#(<= (+ 3 ~s~0) ~t~0), Black: 318#(<= (+ ~s~0 1) ~t~0), 365#(<= (+ ~s~0 4) ~t~0), Black: 327#(and (<= (+ 2 ~s~0) ~m5~0) (<= (+ 3 ~s~0) ~t~0)), Black: 331#(and (<= (+ ~s~0 4) ~t~0) (<= (+ 2 ~s~0) ~m5~0)), 106#L124true, Black: 268#(<= ~s~0 ~t~0), Black: 274#(and (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m2~0)), 19#L115true, 285#(<= (+ 3 ~s~0) ~t~0), 142#L55true, Black: 353#(and (<= (+ 3 ~s~0) ~t~0) (<= (+ ~s~0 1) ~m6~0)), Black: 282#(<= ~s~0 ~t~0), Black: 351#(and (<= (+ 2 ~s~0) ~t~0) (<= (+ ~s~0 1) ~m6~0)), Black: 283#(<= (+ ~s~0 1) ~t~0), Black: 284#(<= (+ 2 ~s~0) ~t~0), Black: 215#(and (<= ~b~0 0) (<= 0 ~b~0)), 77#L93true, Black: 212#(and (<= ~x~0 0) (= (* 256 (div ~b~0 256)) ~b~0)), 269#(<= (+ ~s~0 1) ~t~0), 62#L181-4true, 387#(<= (+ ~s~0 4) ~t~0), 346#(<= (+ 3 ~s~0) ~t~0), Black: 301#(<= (+ ~s~0 1) ~t~0), Black: 300#(<= ~s~0 ~t~0), Black: 307#(and (<= (+ 2 ~s~0) ~m5~0) (<= (+ 2 ~s~0) ~t~0)), Black: 370#(and (<= (+ ~s~0 1) ~m5~0) (<= (+ 2 ~s~0) ~t~0)), Black: 372#(and (<= (+ ~s~0 1) ~m5~0) (<= (+ 3 ~s~0) ~t~0)), Black: 374#(and (<= (+ ~s~0 1) ~m5~0) (<= (+ ~s~0 4) ~t~0))]) [2021-12-06 18:01:05,674 INFO L384 tUnfolder$Statistics]: this new event has 115 ancestors and is cut-off event [2021-12-06 18:01:05,674 INFO L387 tUnfolder$Statistics]: existing Event has 115 ancestors and is cut-off event [2021-12-06 18:01:05,674 INFO L387 tUnfolder$Statistics]: existing Event has 115 ancestors and is cut-off event [2021-12-06 18:01:05,674 INFO L387 tUnfolder$Statistics]: existing Event has 115 ancestors and is cut-off event [2021-12-06 18:01:09,222 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([551] L71-->L74: Formula: (= v_~b~0_1 (ite (= (ite (or (not (= (mod v_~b~0_2 256) 0)) (= v_~x~0_3 1)) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_2, ~x~0=v_~x~0_3} OutVars{~b~0=v_~b~0_1, ~x~0=v_~x~0_3} AuxVars[] AssignedVars[~b~0][139], [Black: 240#(= (* 256 (div ~b~0 256)) ~b~0), Black: 238#(and (= (* 256 (div ~b~0 256)) ~b~0) (<= ~t~0 ~s~0)), Black: 239#(and (<= ~m1~0 ~s~0) (= (* 256 (div ~b~0 256)) ~b~0)), 302#(<= (+ 2 ~s~0) ~t~0), 102#L74true, 131#L131true, 321#(<= (+ ~s~0 4) ~t~0), Black: 329#(and (<= (+ 3 ~s~0) ~m5~0) (<= (+ ~s~0 4) ~t~0)), Black: 317#(<= ~s~0 ~t~0), Black: 320#(<= (+ 3 ~s~0) ~t~0), Black: 318#(<= (+ ~s~0 1) ~t~0), Black: 327#(and (<= (+ 2 ~s~0) ~m5~0) (<= (+ 3 ~s~0) ~t~0)), 365#(<= (+ ~s~0 4) ~t~0), Black: 331#(and (<= (+ ~s~0 4) ~t~0) (<= (+ 2 ~s~0) ~m5~0)), Black: 268#(<= ~s~0 ~t~0), Black: 274#(and (<= (+ ~s~0 1) ~t~0) (< ~s~0 ~m2~0)), 19#L115true, 142#L55true, 285#(<= (+ 3 ~s~0) ~t~0), Black: 353#(and (<= (+ 3 ~s~0) ~t~0) (<= (+ ~s~0 1) ~m6~0)), Black: 282#(<= ~s~0 ~t~0), Black: 351#(and (<= (+ 2 ~s~0) ~t~0) (<= (+ ~s~0 1) ~m6~0)), Black: 283#(<= (+ ~s~0 1) ~t~0), Black: 284#(<= (+ 2 ~s~0) ~t~0), Black: 215#(and (<= ~b~0 0) (<= 0 ~b~0)), 77#L93true, Black: 212#(and (<= ~x~0 0) (= (* 256 (div ~b~0 256)) ~b~0)), 269#(<= (+ ~s~0 1) ~t~0), 387#(<= (+ ~s~0 4) ~t~0), 62#L181-4true, 346#(<= (+ 3 ~s~0) ~t~0), Black: 301#(<= (+ ~s~0 1) ~t~0), Black: 300#(<= ~s~0 ~t~0), Black: 370#(and (<= (+ ~s~0 1) ~m5~0) (<= (+ 2 ~s~0) ~t~0)), Black: 307#(and (<= (+ 2 ~s~0) ~m5~0) (<= (+ 2 ~s~0) ~t~0)), Black: 372#(and (<= (+ ~s~0 1) ~m5~0) (<= (+ 3 ~s~0) ~t~0)), 76#L147true, Black: 374#(and (<= (+ ~s~0 1) ~m5~0) (<= (+ ~s~0 4) ~t~0))]) [2021-12-06 18:01:09,222 INFO L384 tUnfolder$Statistics]: this new event has 116 ancestors and is cut-off event [2021-12-06 18:01:09,222 INFO L387 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2021-12-06 18:01:09,222 INFO L387 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2021-12-06 18:01:09,222 INFO L387 tUnfolder$Statistics]: existing Event has 116 ancestors and is cut-off event [2021-12-06 18:01:27,261 INFO L129 PetriNetUnfolder]: 220925/358602 cut-off events. [2021-12-06 18:01:27,261 INFO L130 PetriNetUnfolder]: For 4348988/4527473 co-relation queries the response was YES. [2021-12-06 18:01:30,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2132838 conditions, 358602 events. 220925/358602 cut-off events. For 4348988/4527473 co-relation queries the response was YES. Maximal size of possible extension queue 20094. Compared 3920316 event pairs, 31033 based on Foata normal form. 36324/371171 useless extension candidates. Maximal degree in co-relation 938181. Up to 83647 conditions per place. [2021-12-06 18:01:33,806 INFO L132 encePairwiseOnDemand]: 172/188 looper letters, 156 selfloop transitions, 819 changer transitions 1/1114 dead transitions. [2021-12-06 18:01:33,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1114 transitions, 17970 flow [2021-12-06 18:01:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:01:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 18:01:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1894 transitions. [2021-12-06 18:01:33,811 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8395390070921985 [2021-12-06 18:01:33,811 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1894 transitions. [2021-12-06 18:01:33,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1894 transitions. [2021-12-06 18:01:33,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:01:33,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1894 transitions. [2021-12-06 18:01:33,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 157.83333333333334) internal successors, (1894), 12 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:01:33,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 188.0) internal successors, (2444), 13 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:01:33,818 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 188.0) internal successors, (2444), 13 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:01:33,818 INFO L186 Difference]: Start difference. First operand has 237 places, 908 transitions, 13593 flow. Second operand 12 states and 1894 transitions. [2021-12-06 18:01:33,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1114 transitions, 17970 flow [2021-12-06 18:03:09,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 1114 transitions, 17113 flow, removed 36 selfloop flow, removed 7 redundant places. [2021-12-06 18:03:09,929 INFO L242 Difference]: Finished difference. Result has 243 places, 1003 transitions, 16388 flow [2021-12-06 18:03:09,929 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=12794, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=724, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16388, PETRI_PLACES=243, PETRI_TRANSITIONS=1003} [2021-12-06 18:03:09,930 INFO L334 CegarLoopForPetriNet]: 182 programPoint places, 61 predicate places. [2021-12-06 18:03:09,930 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 1003 transitions, 16388 flow [2021-12-06 18:03:09,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 143.0) internal successors, (1573), 11 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:03:09,931 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:03:09,931 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:09,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:03:09,931 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-12-06 18:03:09,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2100855050, now seen corresponding path program 10 times [2021-12-06 18:03:09,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:03:09,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316885568] [2021-12-06 18:03:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:09,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:03:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:10,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:03:10,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316885568] [2021-12-06 18:03:10,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316885568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:10,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:10,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:03:10,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480651711] [2021-12-06 18:03:10,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:10,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:03:10,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:03:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:03:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:03:10,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 188 [2021-12-06 18:03:10,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 1003 transitions, 16388 flow. Second operand has 9 states, 9 states have (on average 143.88888888888889) internal successors, (1295), 9 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:03:10,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:03:10,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 188 [2021-12-06 18:03:10,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand