./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc --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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:29:50,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:29:50,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:29:50,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:29:50,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:29:50,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:29:50,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:29:50,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:29:50,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:29:50,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:29:50,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:29:50,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:29:50,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:29:50,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:29:50,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:29:50,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:29:50,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:29:50,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:29:50,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:29:50,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:29:50,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:29:50,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:29:50,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:29:50,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:29:50,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:29:50,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:29:50,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:29:50,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:29:50,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:29:50,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:29:50,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:29:50,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:29:50,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:29:50,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:29:50,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:29:50,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:29:50,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:29:50,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:29:50,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:29:50,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:29:50,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:29:50,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:29:50,821 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:29:50,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:29:50,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:29:50,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:29:50,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:29:50,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:29:50,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:29:50,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:29:50,824 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:29:50,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:29:50,825 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:29:50,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:29:50,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:29:50,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:29:50,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:29:50,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:29:50,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:29:50,827 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:29:50,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:29:50,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:29:50,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:29:50,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:29:50,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:29:50,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:29:50,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:29:50,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:29:50,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:29:50,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:29:50,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:29:50,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:29:50,829 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:29:50,830 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:29:50,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:29:50,830 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_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b [2022-11-02 20:29:51,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:29:51,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:29:51,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:29:51,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:29:51,139 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:29:51,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-02 20:29:51,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/data/c6ef96103/2764508793de4316a85397691b627028/FLAG012b75ef8 [2022-11-02 20:29:51,637 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:29:51,638 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-02 20:29:51,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/data/c6ef96103/2764508793de4316a85397691b627028/FLAG012b75ef8 [2022-11-02 20:29:52,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/data/c6ef96103/2764508793de4316a85397691b627028 [2022-11-02 20:29:52,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:29:52,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:29:52,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:29:52,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:29:52,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:29:52,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d7452d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52, skipping insertion in model container [2022-11-02 20:29:52,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:29:52,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:29:52,293 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_a4cd6832-3a1e-4d68-8968-959fdfa65809/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-02 20:29:52,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:29:52,322 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:29:52,363 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_a4cd6832-3a1e-4d68-8968-959fdfa65809/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-02 20:29:52,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:29:52,381 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:29:52,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52 WrapperNode [2022-11-02 20:29:52,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:29:52,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:29:52,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:29:52,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:29:52,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,429 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2022-11-02 20:29:52,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:29:52,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:29:52,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:29:52,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:29:52,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,461 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:29:52,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:29:52,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:29:52,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:29:52,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (1/1) ... [2022-11-02 20:29:52,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:29:52,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:29:52,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:29:52,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:29:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:29:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:29:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:29:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:29:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:29:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:29:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:29:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:29:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:29:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:29:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-02 20:29:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-02 20:29:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:29:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:29:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:29:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:29:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:29:52,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:29:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:29:52,567 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:29:52,674 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:29:52,676 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:29:53,212 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:29:53,323 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:29:53,323 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 20:29:53,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:29:53 BoogieIcfgContainer [2022-11-02 20:29:53,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:29:53,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:29:53,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:29:53,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:29:53,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:29:52" (1/3) ... [2022-11-02 20:29:53,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505603f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:29:53, skipping insertion in model container [2022-11-02 20:29:53,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:52" (2/3) ... [2022-11-02 20:29:53,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505603f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:29:53, skipping insertion in model container [2022-11-02 20:29:53,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:29:53" (3/3) ... [2022-11-02 20:29:53,354 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-11-02 20:29:53,368 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:29:53,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:29:53,379 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:29:53,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:29:53,475 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:29:53,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 239 transitions, 510 flow [2022-11-02 20:29:53,608 INFO L130 PetriNetUnfolder]: 18/235 cut-off events. [2022-11-02 20:29:53,609 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:29:53,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 18/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 127 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 201. Up to 3 conditions per place. [2022-11-02 20:29:53,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 239 transitions, 510 flow [2022-11-02 20:29:53,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 222 transitions, 468 flow [2022-11-02 20:29:53,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:29:53,669 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@140932a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:29:53,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:29:53,731 INFO L130 PetriNetUnfolder]: 18/221 cut-off events. [2022-11-02 20:29:53,731 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:29:53,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:53,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:53,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:29:53,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1140496691, now seen corresponding path program 1 times [2022-11-02 20:29:53,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:53,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591095983] [2022-11-02 20:29:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:53,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:29:54,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:54,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591095983] [2022-11-02 20:29:54,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591095983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:54,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:54,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:29:54,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186236862] [2022-11-02 20:29:54,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:54,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:29:54,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:54,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:29:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:29:54,242 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 239 [2022-11-02 20:29:54,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 222 transitions, 468 flow. Second operand has 2 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:54,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:54,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 239 [2022-11-02 20:29:54,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:54,426 INFO L130 PetriNetUnfolder]: 101/488 cut-off events. [2022-11-02 20:29:54,427 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-11-02 20:29:54,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 488 events. 101/488 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1656 event pairs, 45 based on Foata normal form. 88/515 useless extension candidates. Maximal degree in co-relation 480. Up to 133 conditions per place. [2022-11-02 20:29:54,436 INFO L137 encePairwiseOnDemand]: 227/239 looper letters, 12 selfloop transitions, 0 changer transitions 7/210 dead transitions. [2022-11-02 20:29:54,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 210 transitions, 468 flow [2022-11-02 20:29:54,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:29:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:29:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 452 transitions. [2022-11-02 20:29:54,452 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9456066945606695 [2022-11-02 20:29:54,452 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 452 transitions. [2022-11-02 20:29:54,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 452 transitions. [2022-11-02 20:29:54,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:54,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 452 transitions. [2022-11-02 20:29:54,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:54,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:54,471 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:54,473 INFO L175 Difference]: Start difference. First operand has 217 places, 222 transitions, 468 flow. Second operand 2 states and 452 transitions. [2022-11-02 20:29:54,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 210 transitions, 468 flow [2022-11-02 20:29:54,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 210 transitions, 452 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-02 20:29:54,486 INFO L231 Difference]: Finished difference. Result has 210 places, 203 transitions, 414 flow [2022-11-02 20:29:54,488 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=210, PETRI_TRANSITIONS=203} [2022-11-02 20:29:54,492 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, -7 predicate places. [2022-11-02 20:29:54,493 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 203 transitions, 414 flow [2022-11-02 20:29:54,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:54,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:54,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:54,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:29:54,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:29:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:54,495 INFO L85 PathProgramCache]: Analyzing trace with hash -632552533, now seen corresponding path program 1 times [2022-11-02 20:29:54,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:54,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450596544] [2022-11-02 20:29:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:54,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:29:55,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:55,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450596544] [2022-11-02 20:29:55,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450596544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:55,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:55,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:29:55,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556160667] [2022-11-02 20:29:55,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:55,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:29:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:29:55,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:29:55,130 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 239 [2022-11-02 20:29:55,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 203 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:55,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:55,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 239 [2022-11-02 20:29:55,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:55,546 INFO L130 PetriNetUnfolder]: 692/1436 cut-off events. [2022-11-02 20:29:55,546 INFO L131 PetriNetUnfolder]: For 110/111 co-relation queries the response was YES. [2022-11-02 20:29:55,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 1436 events. 692/1436 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7623 event pairs, 65 based on Foata normal form. 0/1365 useless extension candidates. Maximal degree in co-relation 2455. Up to 335 conditions per place. [2022-11-02 20:29:55,563 INFO L137 encePairwiseOnDemand]: 234/239 looper letters, 51 selfloop transitions, 5 changer transitions 0/236 dead transitions. [2022-11-02 20:29:55,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 236 transitions, 599 flow [2022-11-02 20:29:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:29:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:29:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1073 transitions. [2022-11-02 20:29:55,570 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.897907949790795 [2022-11-02 20:29:55,571 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1073 transitions. [2022-11-02 20:29:55,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1073 transitions. [2022-11-02 20:29:55,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:55,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1073 transitions. [2022-11-02 20:29:55,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:55,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 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) [2022-11-02 20:29:55,580 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 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) [2022-11-02 20:29:55,581 INFO L175 Difference]: Start difference. First operand has 210 places, 203 transitions, 414 flow. Second operand 5 states and 1073 transitions. [2022-11-02 20:29:55,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 236 transitions, 599 flow [2022-11-02 20:29:55,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 236 transitions, 599 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:55,588 INFO L231 Difference]: Finished difference. Result has 210 places, 206 transitions, 445 flow [2022-11-02 20:29:55,588 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=210, PETRI_TRANSITIONS=206} [2022-11-02 20:29:55,589 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, -7 predicate places. [2022-11-02 20:29:55,589 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 206 transitions, 445 flow [2022-11-02 20:29:55,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:55,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:55,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:55,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:29:55,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:29:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash -189720709, now seen corresponding path program 2 times [2022-11-02 20:29:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:55,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181740201] [2022-11-02 20:29:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:29:55,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:55,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181740201] [2022-11-02 20:29:55,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181740201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:55,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:55,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:29:55,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963715402] [2022-11-02 20:29:55,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:55,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:29:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:29:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:29:55,943 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 239 [2022-11-02 20:29:55,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 206 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:55,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:55,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 239 [2022-11-02 20:29:55,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:56,386 INFO L130 PetriNetUnfolder]: 827/1769 cut-off events. [2022-11-02 20:29:56,386 INFO L131 PetriNetUnfolder]: For 491/492 co-relation queries the response was YES. [2022-11-02 20:29:56,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 1769 events. 827/1769 cut-off events. For 491/492 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10686 event pairs, 194 based on Foata normal form. 0/1658 useless extension candidates. Maximal degree in co-relation 3418. Up to 437 conditions per place. [2022-11-02 20:29:56,405 INFO L137 encePairwiseOnDemand]: 234/239 looper letters, 50 selfloop transitions, 7 changer transitions 0/237 dead transitions. [2022-11-02 20:29:56,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 237 transitions, 648 flow [2022-11-02 20:29:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:29:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:29:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1070 transitions. [2022-11-02 20:29:56,410 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.895397489539749 [2022-11-02 20:29:56,410 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1070 transitions. [2022-11-02 20:29:56,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1070 transitions. [2022-11-02 20:29:56,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:56,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1070 transitions. [2022-11-02 20:29:56,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:56,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 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) [2022-11-02 20:29:56,418 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 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) [2022-11-02 20:29:56,418 INFO L175 Difference]: Start difference. First operand has 210 places, 206 transitions, 445 flow. Second operand 5 states and 1070 transitions. [2022-11-02 20:29:56,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 237 transitions, 648 flow [2022-11-02 20:29:56,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 237 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:29:56,427 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 488 flow [2022-11-02 20:29:56,428 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-11-02 20:29:56,430 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, -1 predicate places. [2022-11-02 20:29:56,430 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 488 flow [2022-11-02 20:29:56,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:56,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:56,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:56,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:29:56,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:29:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 191830465, now seen corresponding path program 3 times [2022-11-02 20:29:56,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:56,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315316125] [2022-11-02 20:29:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:56,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:29:57,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:57,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315316125] [2022-11-02 20:29:57,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315316125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:57,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:57,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:29:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076249478] [2022-11-02 20:29:57,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:57,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:29:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:29:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:29:57,320 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 239 [2022-11-02 20:29:57,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 488 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:57,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:57,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 239 [2022-11-02 20:29:57,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:58,694 INFO L130 PetriNetUnfolder]: 2190/4251 cut-off events. [2022-11-02 20:29:58,695 INFO L131 PetriNetUnfolder]: For 2158/2158 co-relation queries the response was YES. [2022-11-02 20:29:58,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9405 conditions, 4251 events. 2190/4251 cut-off events. For 2158/2158 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 31370 event pairs, 316 based on Foata normal form. 72/4239 useless extension candidates. Maximal degree in co-relation 9395. Up to 1072 conditions per place. [2022-11-02 20:29:58,744 INFO L137 encePairwiseOnDemand]: 228/239 looper letters, 91 selfloop transitions, 12 changer transitions 3/254 dead transitions. [2022-11-02 20:29:58,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 254 transitions, 844 flow [2022-11-02 20:29:58,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:29:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:29:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1735 transitions. [2022-11-02 20:29:58,749 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7259414225941423 [2022-11-02 20:29:58,752 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1735 transitions. [2022-11-02 20:29:58,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1735 transitions. [2022-11-02 20:29:58,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:58,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1735 transitions. [2022-11-02 20:29:58,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.5) internal successors, (1735), 10 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:58,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:58,766 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:58,766 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 488 flow. Second operand 10 states and 1735 transitions. [2022-11-02 20:29:58,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 254 transitions, 844 flow [2022-11-02 20:29:58,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 254 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:29:58,779 INFO L231 Difference]: Finished difference. Result has 226 places, 213 transitions, 544 flow [2022-11-02 20:29:58,780 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=544, PETRI_PLACES=226, PETRI_TRANSITIONS=213} [2022-11-02 20:29:58,781 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, 9 predicate places. [2022-11-02 20:29:58,782 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 213 transitions, 544 flow [2022-11-02 20:29:58,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:58,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:58,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:58,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:29:58,784 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:29:58,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash 459762746, now seen corresponding path program 1 times [2022-11-02 20:29:58,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:58,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044298373] [2022-11-02 20:29:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:58,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:29:59,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:59,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044298373] [2022-11-02 20:29:59,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044298373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:59,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:59,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:29:59,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439984203] [2022-11-02 20:29:59,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:59,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:29:59,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:59,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:29:59,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:29:59,216 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 239 [2022-11-02 20:29:59,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 213 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:59,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:59,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 239 [2022-11-02 20:29:59,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:59,580 INFO L130 PetriNetUnfolder]: 367/1217 cut-off events. [2022-11-02 20:29:59,580 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2022-11-02 20:29:59,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 1217 events. 367/1217 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7424 event pairs, 99 based on Foata normal form. 20/1165 useless extension candidates. Maximal degree in co-relation 2211. Up to 398 conditions per place. [2022-11-02 20:29:59,598 INFO L137 encePairwiseOnDemand]: 234/239 looper letters, 21 selfloop transitions, 4 changer transitions 1/219 dead transitions. [2022-11-02 20:29:59,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 219 transitions, 603 flow [2022-11-02 20:29:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:29:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:29:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2022-11-02 20:29:59,601 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9037656903765691 [2022-11-02 20:29:59,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2022-11-02 20:29:59,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2022-11-02 20:29:59,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:59,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2022-11-02 20:29:59,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:59,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:59,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:59,607 INFO L175 Difference]: Start difference. First operand has 226 places, 213 transitions, 544 flow. Second operand 3 states and 648 transitions. [2022-11-02 20:29:59,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 219 transitions, 603 flow [2022-11-02 20:29:59,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 219 transitions, 584 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-02 20:29:59,616 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 532 flow [2022-11-02 20:29:59,617 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2022-11-02 20:29:59,618 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, 5 predicate places. [2022-11-02 20:29:59,618 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 532 flow [2022-11-02 20:29:59,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:59,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:59,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:59,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:29:59,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:29:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1128020994, now seen corresponding path program 1 times [2022-11-02 20:29:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:59,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832807812] [2022-11-02 20:29:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:29:59,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:59,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832807812] [2022-11-02 20:29:59,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832807812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:59,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:59,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:29:59,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483947881] [2022-11-02 20:29:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:59,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:29:59,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:29:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:29:59,937 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 239 [2022-11-02 20:29:59,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 532 flow. Second operand has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:59,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:59,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 239 [2022-11-02 20:29:59,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:30:00,365 INFO L130 PetriNetUnfolder]: 393/1344 cut-off events. [2022-11-02 20:30:00,365 INFO L131 PetriNetUnfolder]: For 505/508 co-relation queries the response was YES. [2022-11-02 20:30:00,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 1344 events. 393/1344 cut-off events. For 505/508 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8159 event pairs, 165 based on Foata normal form. 13/1255 useless extension candidates. Maximal degree in co-relation 2553. Up to 445 conditions per place. [2022-11-02 20:30:00,384 INFO L137 encePairwiseOnDemand]: 231/239 looper letters, 37 selfloop transitions, 6 changer transitions 9/226 dead transitions. [2022-11-02 20:30:00,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 226 transitions, 668 flow [2022-11-02 20:30:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:30:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:30:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1368 transitions. [2022-11-02 20:30:00,388 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8176927674835625 [2022-11-02 20:30:00,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1368 transitions. [2022-11-02 20:30:00,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1368 transitions. [2022-11-02 20:30:00,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:30:00,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1368 transitions. [2022-11-02 20:30:00,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 195.42857142857142) internal successors, (1368), 7 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:00,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:00,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:00,398 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 532 flow. Second operand 7 states and 1368 transitions. [2022-11-02 20:30:00,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 226 transitions, 668 flow [2022-11-02 20:30:00,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:30:00,405 INFO L231 Difference]: Finished difference. Result has 229 places, 214 transitions, 550 flow [2022-11-02 20:30:00,406 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=550, PETRI_PLACES=229, PETRI_TRANSITIONS=214} [2022-11-02 20:30:00,407 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, 12 predicate places. [2022-11-02 20:30:00,407 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 214 transitions, 550 flow [2022-11-02 20:30:00,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:00,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:30:00,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:00,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:30:00,409 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:30:00,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash -97669445, now seen corresponding path program 1 times [2022-11-02 20:30:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:00,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993006811] [2022-11-02 20:30:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:00,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:30:00,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:00,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993006811] [2022-11-02 20:30:00,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993006811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:00,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:30:00,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:30:00,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021368237] [2022-11-02 20:30:00,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:00,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:30:00,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:00,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:30:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:30:00,801 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 239 [2022-11-02 20:30:00,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 214 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:00,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:30:00,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 239 [2022-11-02 20:30:00,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:30:01,043 INFO L130 PetriNetUnfolder]: 207/836 cut-off events. [2022-11-02 20:30:01,044 INFO L131 PetriNetUnfolder]: For 350/352 co-relation queries the response was YES. [2022-11-02 20:30:01,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 836 events. 207/836 cut-off events. For 350/352 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4295 event pairs, 77 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 1587. Up to 266 conditions per place. [2022-11-02 20:30:01,055 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 19 selfloop transitions, 2 changer transitions 2/220 dead transitions. [2022-11-02 20:30:01,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 613 flow [2022-11-02 20:30:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:30:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:30:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2022-11-02 20:30:01,058 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9107391910739191 [2022-11-02 20:30:01,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2022-11-02 20:30:01,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2022-11-02 20:30:01,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:30:01,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2022-11-02 20:30:01,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:01,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:01,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:01,064 INFO L175 Difference]: Start difference. First operand has 229 places, 214 transitions, 550 flow. Second operand 3 states and 653 transitions. [2022-11-02 20:30:01,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 613 flow [2022-11-02 20:30:01,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 601 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-02 20:30:01,071 INFO L231 Difference]: Finished difference. Result has 226 places, 215 transitions, 550 flow [2022-11-02 20:30:01,071 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=226, PETRI_TRANSITIONS=215} [2022-11-02 20:30:01,072 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, 9 predicate places. [2022-11-02 20:30:01,072 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 215 transitions, 550 flow [2022-11-02 20:30:01,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:01,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:30:01,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:01,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:30:01,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:30:01,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1442759453, now seen corresponding path program 1 times [2022-11-02 20:30:01,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:01,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821496085] [2022-11-02 20:30:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:01,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:30:01,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:01,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821496085] [2022-11-02 20:30:01,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821496085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:01,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:30:01,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:30:01,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924853279] [2022-11-02 20:30:01,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:01,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:30:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:30:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:30:01,355 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 239 [2022-11-02 20:30:01,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 215 transitions, 550 flow. Second operand has 6 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:01,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:30:01,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 239 [2022-11-02 20:30:01,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:30:01,762 INFO L130 PetriNetUnfolder]: 216/949 cut-off events. [2022-11-02 20:30:01,763 INFO L131 PetriNetUnfolder]: For 430/445 co-relation queries the response was YES. [2022-11-02 20:30:01,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 949 events. 216/949 cut-off events. For 430/445 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4639 event pairs, 80 based on Foata normal form. 4/898 useless extension candidates. Maximal degree in co-relation 1859. Up to 286 conditions per place. [2022-11-02 20:30:01,773 INFO L137 encePairwiseOnDemand]: 229/239 looper letters, 37 selfloop transitions, 8 changer transitions 20/239 dead transitions. [2022-11-02 20:30:01,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 239 transitions, 742 flow [2022-11-02 20:30:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:30:01,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:30:01,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1754 transitions. [2022-11-02 20:30:01,779 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8154346815434682 [2022-11-02 20:30:01,779 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1754 transitions. [2022-11-02 20:30:01,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1754 transitions. [2022-11-02 20:30:01,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:30:01,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1754 transitions. [2022-11-02 20:30:01,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.88888888888889) internal successors, (1754), 9 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:01,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:01,792 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:01,792 INFO L175 Difference]: Start difference. First operand has 226 places, 215 transitions, 550 flow. Second operand 9 states and 1754 transitions. [2022-11-02 20:30:01,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 239 transitions, 742 flow [2022-11-02 20:30:01,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 239 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:30:01,799 INFO L231 Difference]: Finished difference. Result has 235 places, 216 transitions, 576 flow [2022-11-02 20:30:01,800 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=576, PETRI_PLACES=235, PETRI_TRANSITIONS=216} [2022-11-02 20:30:01,803 INFO L287 CegarLoopForPetriNet]: 217 programPoint places, 18 predicate places. [2022-11-02 20:30:01,803 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 216 transitions, 576 flow [2022-11-02 20:30:01,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:30:01,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:30:01,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:01,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:30:01,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:30:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2000514565, now seen corresponding path program 1 times [2022-11-02 20:30:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:01,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649239036] [2022-11-02 20:30:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:01,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:30:07,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:07,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649239036] [2022-11-02 20:30:07,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649239036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:07,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469066861] [2022-11-02 20:30:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:07,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:07,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:07,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:07,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cd6832-3a1e-4d68-8968-959fdfa65809/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:30:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:08,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-02 20:30:08,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:10,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:30:11,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:30:13,310 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:30:13,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:30:14,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:30:16,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:30:16,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:30:17,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:30:17,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:30:19,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 12 [2022-11-02 20:30:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:30:19,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:30:32,245 INFO L356 Elim1Store]: treesize reduction 27, result has 61.4 percent of original size [2022-11-02 20:30:32,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 240 treesize of output 138 [2022-11-02 20:30:32,429 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:30:32,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 118352 treesize of output 114346 [2022-11-02 20:30:33,152 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:30:33,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 113519 treesize of output 110487 [2022-11-02 20:30:33,681 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:30:33,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111042 treesize of output 86170 [2022-11-02 20:30:34,260 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:30:34,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86082 treesize of output 73690 [2022-11-02 20:30:34,948 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:30:34,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73602 treesize of output 67450