./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a --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 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa --- 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-b5237d8 [2022-11-21 13:43:54,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:43:54,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:43:54,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:43:54,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:43:54,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:43:54,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:43:54,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:43:54,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:43:54,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:43:54,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:43:54,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:43:54,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:43:54,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:43:54,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:43:54,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:43:54,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:43:54,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:43:54,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:43:54,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:43:54,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:43:54,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:43:54,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:43:54,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:43:54,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:43:54,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:43:54,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:43:54,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:43:54,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:43:54,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:43:54,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:43:54,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:43:54,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:43:54,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:43:54,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:43:54,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:43:54,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:43:54,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:43:54,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:43:54,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:43:54,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:43:54,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:43:54,635 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:43:54,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:43:54,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:43:54,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:43:54,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:43:54,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:43:54,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:43:54,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:43:54,656 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:43:54,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:43:54,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:43:54,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:43:54,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:43:54,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:43:54,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:43:54,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:43:54,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:43:54,657 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:43:54,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:43:54,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:43:54,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:43:54,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:43:54,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:43:54,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:43:54,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:43:54,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:43:54,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:43:54,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:43:54,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:43:54,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:43:54,660 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:43:54,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:43:54,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:43:54,660 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_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa [2022-11-21 13:43:54,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:43:54,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:43:54,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:43:54,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:43:54,972 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:43:54,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-21 13:43:58,003 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:43:58,262 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:43:58,262 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2022-11-21 13:43:58,269 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/data/817ca24a9/cfa339c53624488e8a2a37d9fb1ba4f6/FLAG5003fb04d [2022-11-21 13:43:58,288 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/data/817ca24a9/cfa339c53624488e8a2a37d9fb1ba4f6 [2022-11-21 13:43:58,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:43:58,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:43:58,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:43:58,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:43:58,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:43:58,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7061ca25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58, skipping insertion in model container [2022-11-21 13:43:58,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:43:58,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:43:58,568 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-21 13:43:58,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:43:58,594 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:43:58,636 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/sv-benchmarks/c/weaver/chl-match-subst.wvr.c[3017,3030] [2022-11-21 13:43:58,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:43:58,659 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:43:58,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58 WrapperNode [2022-11-21 13:43:58,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:43:58,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:43:58,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:43:58,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:43:58,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,722 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 206 [2022-11-21 13:43:58,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:43:58,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:43:58,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:43:58,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:43:58,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,775 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:43:58,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:43:58,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:43:58,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:43:58,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (1/1) ... [2022-11-21 13:43:58,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:43:58,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:43:58,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:43:58,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f86741-a50c-4edb-b9ab-968d20633ef1/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:43:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:43:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 13:43:58,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 13:43:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 13:43:58,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 13:43:58,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 13:43:58,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 13:43:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:43:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:43:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:43:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:43:58,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:43:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:43:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:43:58,870 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:43:58,978 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:43:58,980 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:43:59,521 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:43:59,533 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:43:59,533 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 13:43:59,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:43:59 BoogieIcfgContainer [2022-11-21 13:43:59,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:43:59,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:43:59,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:43:59,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:43:59,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:43:58" (1/3) ... [2022-11-21 13:43:59,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388bbe0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:43:59, skipping insertion in model container [2022-11-21 13:43:59,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:58" (2/3) ... [2022-11-21 13:43:59,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388bbe0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:43:59, skipping insertion in model container [2022-11-21 13:43:59,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:43:59" (3/3) ... [2022-11-21 13:43:59,546 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2022-11-21 13:43:59,554 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:43:59,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:43:59,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:43:59,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:43:59,693 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 13:43:59,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 289 transitions, 602 flow [2022-11-21 13:43:59,975 INFO L130 PetriNetUnfolder]: 14/286 cut-off events. [2022-11-21 13:43:59,975 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 13:43:59,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 286 events. 14/286 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 409 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-21 13:43:59,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 289 transitions, 602 flow [2022-11-21 13:43:59,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 275 transitions, 568 flow [2022-11-21 13:44:00,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:44:00,011 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;@4b20ffda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:44:00,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 13:44:00,099 INFO L130 PetriNetUnfolder]: 14/274 cut-off events. [2022-11-21 13:44:00,099 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 13:44:00,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:44:00,100 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:44:00,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:44:00,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:44:00,107 INFO L85 PathProgramCache]: Analyzing trace with hash 419350744, now seen corresponding path program 1 times [2022-11-21 13:44:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:44:00,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460190323] [2022-11-21 13:44:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:44:00,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:44:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:44:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:44:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:44:13,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460190323] [2022-11-21 13:44:13,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460190323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:44:13,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:44:13,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-21 13:44:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832081619] [2022-11-21 13:44:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:44:13,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-21 13:44:13,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:44:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-21 13:44:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-21 13:44:14,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-21 13:44:14,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 275 transitions, 568 flow. Second operand has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:44:14,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:44:14,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-21 13:44:14,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:45:43,811 INFO L130 PetriNetUnfolder]: 36422/79014 cut-off events. [2022-11-21 13:45:43,811 INFO L131 PetriNetUnfolder]: For 2977/2977 co-relation queries the response was YES. [2022-11-21 13:45:44,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137366 conditions, 79014 events. 36422/79014 cut-off events. For 2977/2977 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 842322 event pairs, 1975 based on Foata normal form. 8638/84279 useless extension candidates. Maximal degree in co-relation 136839. Up to 6165 conditions per place. [2022-11-21 13:45:44,399 INFO L137 encePairwiseOnDemand]: 216/289 looper letters, 1419 selfloop transitions, 34 changer transitions 57/1659 dead transitions. [2022-11-21 13:45:44,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1659 transitions, 6524 flow [2022-11-21 13:45:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-21 13:45:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-11-21 13:45:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 11623 transitions. [2022-11-21 13:45:44,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6593113619604062 [2022-11-21 13:45:44,450 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 11623 transitions. [2022-11-21 13:45:44,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 11623 transitions. [2022-11-21 13:45:44,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:45:44,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 11623 transitions. [2022-11-21 13:45:44,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 190.54098360655738) internal successors, (11623), 61 states have internal predecessors, (11623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:44,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 289.0) internal successors, (17918), 62 states have internal predecessors, (17918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:44,550 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 289.0) internal successors, (17918), 62 states have internal predecessors, (17918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:44,552 INFO L175 Difference]: Start difference. First operand has 271 places, 275 transitions, 568 flow. Second operand 61 states and 11623 transitions. [2022-11-21 13:45:44,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1659 transitions, 6524 flow [2022-11-21 13:45:44,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1659 transitions, 6400 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 13:45:44,614 INFO L231 Difference]: Finished difference. Result has 365 places, 276 transitions, 741 flow [2022-11-21 13:45:44,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=741, PETRI_PLACES=365, PETRI_TRANSITIONS=276} [2022-11-21 13:45:44,621 INFO L288 CegarLoopForPetriNet]: 271 programPoint places, 94 predicate places. [2022-11-21 13:45:44,622 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 276 transitions, 741 flow [2022-11-21 13:45:44,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:44,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:45:44,628 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:44,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:45:44,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:45:44,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:44,629 INFO L85 PathProgramCache]: Analyzing trace with hash 357940874, now seen corresponding path program 2 times [2022-11-21 13:45:44,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:44,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623796516] [2022-11-21 13:45:44,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:44,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:45:53,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:53,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623796516] [2022-11-21 13:45:53,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623796516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:53,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:53,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-21 13:45:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16671922] [2022-11-21 13:45:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:53,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-21 13:45:53,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:53,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-21 13:45:53,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-21 13:45:53,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-21 13:45:53,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 276 transitions, 741 flow. Second operand has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:45:53,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:45:53,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-21 13:45:53,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:47:05,109 INFO L130 PetriNetUnfolder]: 72412/155800 cut-off events. [2022-11-21 13:47:05,111 INFO L131 PetriNetUnfolder]: For 59126/59126 co-relation queries the response was YES. [2022-11-21 13:47:06,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346385 conditions, 155800 events. 72412/155800 cut-off events. For 59126/59126 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 1798542 event pairs, 20262 based on Foata normal form. 1/149819 useless extension candidates. Maximal degree in co-relation 346282. Up to 26971 conditions per place. [2022-11-21 13:47:07,541 INFO L137 encePairwiseOnDemand]: 232/289 looper letters, 2050 selfloop transitions, 133 changer transitions 68/2400 dead transitions. [2022-11-21 13:47:07,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 2400 transitions, 12748 flow [2022-11-21 13:47:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-21 13:47:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-11-21 13:47:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 14754 transitions. [2022-11-21 13:47:07,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6545115783870109 [2022-11-21 13:47:07,579 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 14754 transitions. [2022-11-21 13:47:07,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 14754 transitions. [2022-11-21 13:47:07,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:47:07,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 14754 transitions. [2022-11-21 13:47:07,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 189.15384615384616) internal successors, (14754), 78 states have internal predecessors, (14754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:07,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 289.0) internal successors, (22831), 79 states have internal predecessors, (22831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:07,673 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 289.0) internal successors, (22831), 79 states have internal predecessors, (22831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:07,673 INFO L175 Difference]: Start difference. First operand has 365 places, 276 transitions, 741 flow. Second operand 78 states and 14754 transitions. [2022-11-21 13:47:07,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 2400 transitions, 12748 flow [2022-11-21 13:47:15,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 2400 transitions, 10362 flow, removed 270 selfloop flow, removed 39 redundant places. [2022-11-21 13:47:15,301 INFO L231 Difference]: Finished difference. Result has 443 places, 401 transitions, 1807 flow [2022-11-21 13:47:15,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=1807, PETRI_PLACES=443, PETRI_TRANSITIONS=401} [2022-11-21 13:47:15,303 INFO L288 CegarLoopForPetriNet]: 271 programPoint places, 172 predicate places. [2022-11-21 13:47:15,303 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 401 transitions, 1807 flow [2022-11-21 13:47:15,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:15,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:47:15,307 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:47:15,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:47:15,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 13:47:15,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:15,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1975653952, now seen corresponding path program 3 times [2022-11-21 13:47:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:15,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453676182] [2022-11-21 13:47:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:22,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:22,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453676182] [2022-11-21 13:47:22,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453676182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:22,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:22,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-21 13:47:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989190046] [2022-11-21 13:47:22,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:22,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-21 13:47:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:22,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-21 13:47:22,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1976, Unknown=0, NotChecked=0, Total=2070 [2022-11-21 13:47:22,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 289 [2022-11-21 13:47:22,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 401 transitions, 1807 flow. Second operand has 46 states, 46 states have (on average 164.3913043478261) internal successors, (7562), 46 states have internal predecessors, (7562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:22,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:47:22,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 289 [2022-11-21 13:47:22,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand