./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/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_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/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_17151d88-b360-47ab-b4d2-5b1c53d2b68f/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 b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 --- 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 21:07:37,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:37,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:37,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:37,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:37,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:37,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:37,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:38,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:38,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:38,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:38,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:38,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:38,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:38,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:38,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:38,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:38,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:38,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:38,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:38,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:38,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:38,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:38,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:38,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:38,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:38,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:38,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:38,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:38,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:38,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:38,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:38,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:38,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:38,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:38,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:38,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:38,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:38,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:38,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:38,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:38,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:07:38,117 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:38,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:38,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:38,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:38,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:38,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:38,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:38,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:38,122 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:38,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:38,124 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:07:38,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:38,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:07:38,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:38,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:07:38,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:38,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:07:38,126 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:07:38,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:07:38,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:38,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:07:38,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:38,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:38,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:38,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:38,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:38,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:38,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:07:38,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:07:38,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:07:38,133 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:07:38,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:07:38,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:07:38,134 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_17151d88-b360-47ab-b4d2-5b1c53d2b68f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 [2022-11-02 21:07:38,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:38,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:38,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:38,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:38,590 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:38,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2022-11-02 21:07:38,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/data/419ff0d88/ed1b02507a6a4b97906196b38e9c6c18/FLAGcae75350d [2022-11-02 21:07:39,307 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:39,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2022-11-02 21:07:39,326 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/data/419ff0d88/ed1b02507a6a4b97906196b38e9c6c18/FLAGcae75350d [2022-11-02 21:07:39,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/data/419ff0d88/ed1b02507a6a4b97906196b38e9c6c18 [2022-11-02 21:07:39,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:39,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:39,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:39,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:39,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:39,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:39" (1/1) ... [2022-11-02 21:07:39,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3590d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:39, skipping insertion in model container [2022-11-02 21:07:39,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:39" (1/1) ... [2022-11-02 21:07:39,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:39,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:40,051 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_17151d88-b360-47ab-b4d2-5b1c53d2b68f/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2022-11-02 21:07:40,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:40,062 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:40,105 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_17151d88-b360-47ab-b4d2-5b1c53d2b68f/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2022-11-02 21:07:40,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:40,124 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:40,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40 WrapperNode [2022-11-02 21:07:40,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:40,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:40,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:40,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:40,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,187 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-02 21:07:40,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:40,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:40,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:40,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:40,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,236 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:40,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:40,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:40,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:40,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (1/1) ... [2022-11-02 21:07:40,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:40,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:40,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:40,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:07:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:07:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:07:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:07:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:07:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:07:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:07:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:07:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:07:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:07:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 21:07:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 21:07:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:40,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:07:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:07:40,354 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 21:07:40,496 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:40,498 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:40,767 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:40,794 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:40,794 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 21:07:40,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:40 BoogieIcfgContainer [2022-11-02 21:07:40,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:40,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:40,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:40,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:40,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:39" (1/3) ... [2022-11-02 21:07:40,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec43333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:40, skipping insertion in model container [2022-11-02 21:07:40,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:40" (2/3) ... [2022-11-02 21:07:40,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec43333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:40, skipping insertion in model container [2022-11-02 21:07:40,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:40" (3/3) ... [2022-11-02 21:07:40,807 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2022-11-02 21:07:40,817 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:07:40,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:40,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:07:40,828 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:07:40,977 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 21:07:41,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 129 transitions, 282 flow [2022-11-02 21:07:41,132 INFO L130 PetriNetUnfolder]: 16/126 cut-off events. [2022-11-02 21:07:41,132 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:07:41,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 16/126 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2022-11-02 21:07:41,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 129 transitions, 282 flow [2022-11-02 21:07:41,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 248 flow [2022-11-02 21:07:41,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:41,163 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;@76f4158d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:41,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 21:07:41,288 INFO L130 PetriNetUnfolder]: 16/114 cut-off events. [2022-11-02 21:07:41,297 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:07:41,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:41,299 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] [2022-11-02 21:07:41,299 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)] === [2022-11-02 21:07:41,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash 336684860, now seen corresponding path program 1 times [2022-11-02 21:07:41,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:41,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095322503] [2022-11-02 21:07:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:41,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:41,759 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 21:07:41,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:41,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095322503] [2022-11-02 21:07:41,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095322503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:41,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:41,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:07:41,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135138490] [2022-11-02 21:07:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:41,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:07:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:07:41,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:07:41,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 129 [2022-11-02 21:07:41,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 248 flow. Second operand has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 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 21:07:41,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:41,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 129 [2022-11-02 21:07:41,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:41,966 INFO L130 PetriNetUnfolder]: 22/133 cut-off events. [2022-11-02 21:07:41,966 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-02 21:07:41,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 133 events. 22/133 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 213 event pairs, 2 based on Foata normal form. 13/127 useless extension candidates. Maximal degree in co-relation 103. Up to 15 conditions per place. [2022-11-02 21:07:41,971 INFO L137 encePairwiseOnDemand]: 125/129 looper letters, 8 selfloop transitions, 0 changer transitions 1/111 dead transitions. [2022-11-02 21:07:41,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 256 flow [2022-11-02 21:07:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:07:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:07:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 244 transitions. [2022-11-02 21:07:41,988 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9457364341085271 [2022-11-02 21:07:41,989 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 244 transitions. [2022-11-02 21:07:41,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 244 transitions. [2022-11-02 21:07:41,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:41,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 244 transitions. [2022-11-02 21:07:41,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 21:07:42,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 21:07:42,016 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 21:07:42,018 INFO L175 Difference]: Start difference. First operand has 109 places, 115 transitions, 248 flow. Second operand 2 states and 244 transitions. [2022-11-02 21:07:42,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 256 flow [2022-11-02 21:07:42,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 111 transitions, 244 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 21:07:42,035 INFO L231 Difference]: Finished difference. Result has 104 places, 110 transitions, 226 flow [2022-11-02 21:07:42,038 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=226, PETRI_PLACES=104, PETRI_TRANSITIONS=110} [2022-11-02 21:07:42,042 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, -5 predicate places. [2022-11-02 21:07:42,042 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 110 transitions, 226 flow [2022-11-02 21:07:42,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 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 21:07:42,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:42,043 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] [2022-11-02 21:07:42,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:07:42,044 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)] === [2022-11-02 21:07:42,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:42,045 INFO L85 PathProgramCache]: Analyzing trace with hash 759950951, now seen corresponding path program 1 times [2022-11-02 21:07:42,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:42,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324783696] [2022-11-02 21:07:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:42,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:42,531 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 21:07:42,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:42,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324783696] [2022-11-02 21:07:42,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324783696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:42,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:42,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:42,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502869723] [2022-11-02 21:07:42,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:42,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:42,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:42,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:42,541 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-11-02 21:07:42,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 21:07:42,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:42,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-11-02 21:07:42,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:42,666 INFO L130 PetriNetUnfolder]: 81/289 cut-off events. [2022-11-02 21:07:42,666 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-02 21:07:42,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 289 events. 81/289 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 964 event pairs, 7 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 371. Up to 45 conditions per place. [2022-11-02 21:07:42,676 INFO L137 encePairwiseOnDemand]: 126/129 looper letters, 17 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2022-11-02 21:07:42,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 116 transitions, 278 flow [2022-11-02 21:07:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:07:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-11-02 21:07:42,685 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2022-11-02 21:07:42,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-11-02 21:07:42,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-11-02 21:07:42,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:42,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-11-02 21:07:42,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 21:07:42,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:42,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:42,695 INFO L175 Difference]: Start difference. First operand has 104 places, 110 transitions, 226 flow. Second operand 3 states and 353 transitions. [2022-11-02 21:07:42,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 116 transitions, 278 flow [2022-11-02 21:07:42,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 116 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:07:42,703 INFO L231 Difference]: Finished difference. Result has 106 places, 111 transitions, 238 flow [2022-11-02 21:07:42,704 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=106, PETRI_TRANSITIONS=111} [2022-11-02 21:07:42,705 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2022-11-02 21:07:42,705 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 111 transitions, 238 flow [2022-11-02 21:07:42,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 21:07:42,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:42,707 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] [2022-11-02 21:07:42,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:07:42,708 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)] === [2022-11-02 21:07:42,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash -636922921, now seen corresponding path program 1 times [2022-11-02 21:07:42,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:42,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947304247] [2022-11-02 21:07:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:42,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:07:43,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:43,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947304247] [2022-11-02 21:07:43,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947304247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:43,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:43,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:43,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480173707] [2022-11-02 21:07:43,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:43,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:43,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:43,026 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-11-02 21:07:43,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 111 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 21:07:43,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:43,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-11-02 21:07:43,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:43,130 INFO L130 PetriNetUnfolder]: 44/206 cut-off events. [2022-11-02 21:07:43,130 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:07:43,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 206 events. 44/206 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 622 event pairs, 4 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 273. Up to 31 conditions per place. [2022-11-02 21:07:43,138 INFO L137 encePairwiseOnDemand]: 126/129 looper letters, 17 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2022-11-02 21:07:43,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 117 transitions, 290 flow [2022-11-02 21:07:43,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:07:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-11-02 21:07:43,142 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2022-11-02 21:07:43,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-11-02 21:07:43,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-11-02 21:07:43,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:43,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-11-02 21:07:43,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 21:07:43,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:43,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:43,151 INFO L175 Difference]: Start difference. First operand has 106 places, 111 transitions, 238 flow. Second operand 3 states and 353 transitions. [2022-11-02 21:07:43,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 117 transitions, 290 flow [2022-11-02 21:07:43,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:07:43,159 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 248 flow [2022-11-02 21:07:43,160 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2022-11-02 21:07:43,163 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, -1 predicate places. [2022-11-02 21:07:43,163 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 248 flow [2022-11-02 21:07:43,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 21:07:43,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:43,165 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] [2022-11-02 21:07:43,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:07:43,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2107460071, now seen corresponding path program 1 times [2022-11-02 21:07:43,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:43,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039898996] [2022-11-02 21:07:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:43,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:43,558 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 21:07:43,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:43,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039898996] [2022-11-02 21:07:43,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039898996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:43,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:43,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:43,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037029274] [2022-11-02 21:07:43,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:43,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:43,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:43,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:43,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:43,574 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-11-02 21:07:43,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 21:07:43,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:43,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-11-02 21:07:43,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:43,780 INFO L130 PetriNetUnfolder]: 243/726 cut-off events. [2022-11-02 21:07:43,780 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-02 21:07:43,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 726 events. 243/726 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3963 event pairs, 44 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 1030. Up to 191 conditions per place. [2022-11-02 21:07:43,795 INFO L137 encePairwiseOnDemand]: 126/129 looper letters, 19 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2022-11-02 21:07:43,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 304 flow [2022-11-02 21:07:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:07:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-11-02 21:07:43,798 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9018087855297158 [2022-11-02 21:07:43,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-11-02 21:07:43,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-11-02 21:07:43,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:43,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-11-02 21:07:43,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 21:07:43,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:43,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:43,810 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 248 flow. Second operand 3 states and 349 transitions. [2022-11-02 21:07:43,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 304 flow [2022-11-02 21:07:43,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 118 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:07:43,821 INFO L231 Difference]: Finished difference. Result has 110 places, 113 transitions, 258 flow [2022-11-02 21:07:43,822 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=110, PETRI_TRANSITIONS=113} [2022-11-02 21:07:43,830 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 1 predicate places. [2022-11-02 21:07:43,832 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 113 transitions, 258 flow [2022-11-02 21:07:43,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 21:07:43,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:43,833 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] [2022-11-02 21:07:43,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:07:43,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:43,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1880753713, now seen corresponding path program 1 times [2022-11-02 21:07:43,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:43,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135131069] [2022-11-02 21:07:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:44,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135131069] [2022-11-02 21:07:44,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135131069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:44,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:44,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068862269] [2022-11-02 21:07:44,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:44,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:44,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:44,060 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-11-02 21:07:44,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 113 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 21:07:44,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:44,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-11-02 21:07:44,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:44,151 INFO L130 PetriNetUnfolder]: 58/234 cut-off events. [2022-11-02 21:07:44,151 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:07:44,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 234 events. 58/234 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 918 event pairs, 4 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 369. Up to 72 conditions per place. [2022-11-02 21:07:44,156 INFO L137 encePairwiseOnDemand]: 126/129 looper letters, 18 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2022-11-02 21:07:44,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 310 flow [2022-11-02 21:07:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:07:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-11-02 21:07:44,159 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8992248062015504 [2022-11-02 21:07:44,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-11-02 21:07:44,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-11-02 21:07:44,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:44,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-11-02 21:07:44,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 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 21:07:44,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:44,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:44,163 INFO L175 Difference]: Start difference. First operand has 110 places, 113 transitions, 258 flow. Second operand 3 states and 348 transitions. [2022-11-02 21:07:44,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 310 flow [2022-11-02 21:07:44,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 118 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:07:44,167 INFO L231 Difference]: Finished difference. Result has 112 places, 114 transitions, 268 flow [2022-11-02 21:07:44,167 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=112, PETRI_TRANSITIONS=114} [2022-11-02 21:07:44,170 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 3 predicate places. [2022-11-02 21:07:44,170 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 114 transitions, 268 flow [2022-11-02 21:07:44,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 21:07:44,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:44,171 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] [2022-11-02 21:07:44,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:07:44,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash -842378021, now seen corresponding path program 1 times [2022-11-02 21:07:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:44,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945004710] [2022-11-02 21:07:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:44,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:44,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945004710] [2022-11-02 21:07:44,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945004710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:44,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:44,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:44,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399205876] [2022-11-02 21:07:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:44,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:44,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:44,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:44,301 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-11-02 21:07:44,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 114 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 21:07:44,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:44,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-11-02 21:07:44,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:44,409 INFO L130 PetriNetUnfolder]: 104/398 cut-off events. [2022-11-02 21:07:44,410 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-02 21:07:44,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 398 events. 104/398 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1538 event pairs, 11 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 533. Up to 48 conditions per place. [2022-11-02 21:07:44,417 INFO L137 encePairwiseOnDemand]: 126/129 looper letters, 17 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2022-11-02 21:07:44,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 120 transitions, 320 flow [2022-11-02 21:07:44,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:07:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-11-02 21:07:44,420 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2022-11-02 21:07:44,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-11-02 21:07:44,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-11-02 21:07:44,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:44,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-11-02 21:07:44,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 21:07:44,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:44,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:44,424 INFO L175 Difference]: Start difference. First operand has 112 places, 114 transitions, 268 flow. Second operand 3 states and 353 transitions. [2022-11-02 21:07:44,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 120 transitions, 320 flow [2022-11-02 21:07:44,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 120 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:07:44,429 INFO L231 Difference]: Finished difference. Result has 114 places, 115 transitions, 278 flow [2022-11-02 21:07:44,430 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=114, PETRI_TRANSITIONS=115} [2022-11-02 21:07:44,433 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 5 predicate places. [2022-11-02 21:07:44,434 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 115 transitions, 278 flow [2022-11-02 21:07:44,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 21:07:44,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:44,435 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] [2022-11-02 21:07:44,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:07:44,436 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:44,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2053516317, now seen corresponding path program 1 times [2022-11-02 21:07:44,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:44,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141178437] [2022-11-02 21:07:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:44,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,621 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 21:07:44,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:44,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141178437] [2022-11-02 21:07:44,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141178437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:44,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:44,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:44,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611244425] [2022-11-02 21:07:44,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:44,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:44,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:44,625 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-11-02 21:07:44,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 21:07:44,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:44,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-11-02 21:07:44,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:44,750 INFO L130 PetriNetUnfolder]: 151/484 cut-off events. [2022-11-02 21:07:44,751 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-02 21:07:44,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 484 events. 151/484 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2270 event pairs, 11 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 733. Up to 132 conditions per place. [2022-11-02 21:07:44,762 INFO L137 encePairwiseOnDemand]: 126/129 looper letters, 19 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2022-11-02 21:07:44,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 121 transitions, 334 flow [2022-11-02 21:07:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:07:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-11-02 21:07:44,765 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9018087855297158 [2022-11-02 21:07:44,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-11-02 21:07:44,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-11-02 21:07:44,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:44,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-11-02 21:07:44,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 21:07:44,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:44,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:07:44,769 INFO L175 Difference]: Start difference. First operand has 114 places, 115 transitions, 278 flow. Second operand 3 states and 349 transitions. [2022-11-02 21:07:44,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 121 transitions, 334 flow [2022-11-02 21:07:44,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 121 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:07:44,774 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 288 flow [2022-11-02 21:07:44,774 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2022-11-02 21:07:44,775 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 7 predicate places. [2022-11-02 21:07:44,775 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 288 flow [2022-11-02 21:07:44,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 21:07:44,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:44,776 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] [2022-11-02 21:07:44,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:07:44,777 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:44,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash 862883513, now seen corresponding path program 1 times [2022-11-02 21:07:44,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:44,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745624519] [2022-11-02 21:07:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:44,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:07:45,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:45,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745624519] [2022-11-02 21:07:45,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745624519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:45,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:45,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:45,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450740438] [2022-11-02 21:07:45,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:45,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:45,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:45,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:45,005 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-11-02 21:07:45,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 116 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 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 21:07:45,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:45,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-11-02 21:07:45,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:45,144 INFO L130 PetriNetUnfolder]: 59/297 cut-off events. [2022-11-02 21:07:45,144 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-02 21:07:45,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 297 events. 59/297 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1254 event pairs, 20 based on Foata normal form. 12/290 useless extension candidates. Maximal degree in co-relation 496. Up to 57 conditions per place. [2022-11-02 21:07:45,149 INFO L137 encePairwiseOnDemand]: 122/129 looper letters, 17 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2022-11-02 21:07:45,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 122 transitions, 351 flow [2022-11-02 21:07:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:07:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 21:07:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2022-11-02 21:07:45,152 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8934108527131783 [2022-11-02 21:07:45,152 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2022-11-02 21:07:45,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2022-11-02 21:07:45,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:45,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2022-11-02 21:07:45,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 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 21:07:45,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 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 21:07:45,156 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 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 21:07:45,156 INFO L175 Difference]: Start difference. First operand has 116 places, 116 transitions, 288 flow. Second operand 4 states and 461 transitions. [2022-11-02 21:07:45,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 122 transitions, 351 flow [2022-11-02 21:07:45,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 122 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:07:45,160 INFO L231 Difference]: Finished difference. Result has 120 places, 117 transitions, 317 flow [2022-11-02 21:07:45,160 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2022-11-02 21:07:45,161 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 11 predicate places. [2022-11-02 21:07:45,161 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 317 flow [2022-11-02 21:07:45,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 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 21:07:45,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:45,162 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:45,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:07:45,163 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:45,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1736654006, now seen corresponding path program 1 times [2022-11-02 21:07:45,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:45,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686709910] [2022-11-02 21:07:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:45,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 21:07:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:45,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686709910] [2022-11-02 21:07:45,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686709910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:45,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:45,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:45,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203099676] [2022-11-02 21:07:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:45,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:45,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:45,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:45,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:45,404 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-11-02 21:07:45,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 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 21:07:45,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:45,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-11-02 21:07:45,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:45,815 INFO L130 PetriNetUnfolder]: 409/1641 cut-off events. [2022-11-02 21:07:45,816 INFO L131 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2022-11-02 21:07:45,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2670 conditions, 1641 events. 409/1641 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12703 event pairs, 128 based on Foata normal form. 56/1549 useless extension candidates. Maximal degree in co-relation 2658. Up to 259 conditions per place. [2022-11-02 21:07:45,841 INFO L137 encePairwiseOnDemand]: 122/129 looper letters, 18 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-11-02 21:07:45,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 124 transitions, 383 flow [2022-11-02 21:07:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:07:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 21:07:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2022-11-02 21:07:45,844 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8953488372093024 [2022-11-02 21:07:45,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 462 transitions. [2022-11-02 21:07:45,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 462 transitions. [2022-11-02 21:07:45,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:45,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 462 transitions. [2022-11-02 21:07:45,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 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 21:07:45,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 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 21:07:45,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 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 21:07:45,849 INFO L175 Difference]: Start difference. First operand has 120 places, 117 transitions, 317 flow. Second operand 4 states and 462 transitions. [2022-11-02 21:07:45,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 124 transitions, 383 flow [2022-11-02 21:07:45,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 124 transitions, 378 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 21:07:45,856 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 343 flow [2022-11-02 21:07:45,857 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2022-11-02 21:07:45,858 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 15 predicate places. [2022-11-02 21:07:45,858 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 343 flow [2022-11-02 21:07:45,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 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 21:07:45,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:45,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:45,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:07:45,859 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash 386735862, now seen corresponding path program 1 times [2022-11-02 21:07:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:45,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29698254] [2022-11-02 21:07:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:45,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:07:46,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:46,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29698254] [2022-11-02 21:07:46,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29698254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:46,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:46,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183929352] [2022-11-02 21:07:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:46,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:46,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:46,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:46,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:46,144 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2022-11-02 21:07:46,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 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 21:07:46,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:46,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2022-11-02 21:07:46,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:46,475 INFO L130 PetriNetUnfolder]: 207/994 cut-off events. [2022-11-02 21:07:46,475 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2022-11-02 21:07:46,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1676 conditions, 994 events. 207/994 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6895 event pairs, 87 based on Foata normal form. 48/949 useless extension candidates. Maximal degree in co-relation 1662. Up to 200 conditions per place. [2022-11-02 21:07:46,499 INFO L137 encePairwiseOnDemand]: 122/129 looper letters, 17 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-11-02 21:07:46,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 124 transitions, 404 flow [2022-11-02 21:07:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:07:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 21:07:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2022-11-02 21:07:46,502 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8934108527131783 [2022-11-02 21:07:46,502 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2022-11-02 21:07:46,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2022-11-02 21:07:46,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:46,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2022-11-02 21:07:46,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 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 21:07:46,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 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 21:07:46,507 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 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 21:07:46,507 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 343 flow. Second operand 4 states and 461 transitions. [2022-11-02 21:07:46,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 124 transitions, 404 flow [2022-11-02 21:07:46,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 124 transitions, 399 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 21:07:46,512 INFO L231 Difference]: Finished difference. Result has 128 places, 119 transitions, 369 flow [2022-11-02 21:07:46,513 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=369, PETRI_PLACES=128, PETRI_TRANSITIONS=119} [2022-11-02 21:07:46,514 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 19 predicate places. [2022-11-02 21:07:46,514 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 119 transitions, 369 flow [2022-11-02 21:07:46,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 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 21:07:46,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:46,515 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:46,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:07:46,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:46,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1585846129, now seen corresponding path program 1 times [2022-11-02 21:07:46,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:46,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352489289] [2022-11-02 21:07:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:47,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:47,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352489289] [2022-11-02 21:07:47,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352489289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:47,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158047917] [2022-11-02 21:07:47,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:47,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:47,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:47,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:47,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:07:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:47,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:07:47,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:47,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:47,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158047917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:47,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:07:47,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-11-02 21:07:47,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129675017] [2022-11-02 21:07:47,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:47,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:47,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:47,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:47,739 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-11-02 21:07:47,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 119 transitions, 369 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 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 21:07:47,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:47,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-11-02 21:07:47,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:48,993 INFO L130 PetriNetUnfolder]: 1046/4426 cut-off events. [2022-11-02 21:07:48,994 INFO L131 PetriNetUnfolder]: For 1265/1265 co-relation queries the response was YES. [2022-11-02 21:07:49,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8098 conditions, 4426 events. 1046/4426 cut-off events. For 1265/1265 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 42444 event pairs, 126 based on Foata normal form. 1/4081 useless extension candidates. Maximal degree in co-relation 8082. Up to 1056 conditions per place. [2022-11-02 21:07:49,062 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 36 selfloop transitions, 12 changer transitions 4/154 dead transitions. [2022-11-02 21:07:49,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 154 transitions, 556 flow [2022-11-02 21:07:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 21:07:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 795 transitions. [2022-11-02 21:07:49,067 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8803986710963455 [2022-11-02 21:07:49,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 795 transitions. [2022-11-02 21:07:49,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 795 transitions. [2022-11-02 21:07:49,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:49,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 795 transitions. [2022-11-02 21:07:49,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.57142857142857) internal successors, (795), 7 states have internal predecessors, (795), 0 states have call successors, (0), 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 21:07:49,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 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 21:07:49,075 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 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 21:07:49,075 INFO L175 Difference]: Start difference. First operand has 128 places, 119 transitions, 369 flow. Second operand 7 states and 795 transitions. [2022-11-02 21:07:49,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 154 transitions, 556 flow [2022-11-02 21:07:49,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 154 transitions, 551 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 21:07:49,084 INFO L231 Difference]: Finished difference. Result has 138 places, 130 transitions, 446 flow [2022-11-02 21:07:49,084 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=138, PETRI_TRANSITIONS=130} [2022-11-02 21:07:49,085 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 29 predicate places. [2022-11-02 21:07:49,085 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 130 transitions, 446 flow [2022-11-02 21:07:49,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 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 21:07:49,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:49,086 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:49,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:07:49,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 21:07:49,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1501582663, now seen corresponding path program 2 times [2022-11-02 21:07:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072650813] [2022-11-02 21:07:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:49,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:07:49,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:49,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072650813] [2022-11-02 21:07:49,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072650813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:49,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207238725] [2022-11-02 21:07:49,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:07:49,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:49,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:49,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:49,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:07:50,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:07:50,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:50,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:07:50,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:07:50,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:07:50,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207238725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:50,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:07:50,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-11-02 21:07:50,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393578294] [2022-11-02 21:07:50,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:50,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:07:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:07:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:50,647 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-11-02 21:07:50,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 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 21:07:50,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:50,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-11-02 21:07:50,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:52,291 INFO L130 PetriNetUnfolder]: 1240/5239 cut-off events. [2022-11-02 21:07:52,291 INFO L131 PetriNetUnfolder]: For 2550/2728 co-relation queries the response was YES. [2022-11-02 21:07:52,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11186 conditions, 5239 events. 1240/5239 cut-off events. For 2550/2728 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 52250 event pairs, 138 based on Foata normal form. 137/4943 useless extension candidates. Maximal degree in co-relation 11165. Up to 1010 conditions per place. [2022-11-02 21:07:52,362 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 43 selfloop transitions, 26 changer transitions 4/175 dead transitions. [2022-11-02 21:07:52,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 175 transitions, 748 flow [2022-11-02 21:07:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 21:07:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 911 transitions. [2022-11-02 21:07:52,366 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8827519379844961 [2022-11-02 21:07:52,366 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 911 transitions. [2022-11-02 21:07:52,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 911 transitions. [2022-11-02 21:07:52,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:52,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 911 transitions. [2022-11-02 21:07:52,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.875) internal successors, (911), 8 states have internal predecessors, (911), 0 states have call successors, (0), 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 21:07:52,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 0 states have call successors, (0), 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 21:07:52,374 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 0 states have call successors, (0), 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 21:07:52,374 INFO L175 Difference]: Start difference. First operand has 138 places, 130 transitions, 446 flow. Second operand 8 states and 911 transitions. [2022-11-02 21:07:52,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 175 transitions, 748 flow [2022-11-02 21:07:52,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 175 transitions, 730 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-11-02 21:07:52,388 INFO L231 Difference]: Finished difference. Result has 145 places, 144 transitions, 589 flow [2022-11-02 21:07:52,389 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=589, PETRI_PLACES=145, PETRI_TRANSITIONS=144} [2022-11-02 21:07:52,390 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 36 predicate places. [2022-11-02 21:07:52,390 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 144 transitions, 589 flow [2022-11-02 21:07:52,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 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 21:07:52,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:52,391 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:52,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 21:07:52,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:52,619 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:52,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash -541813209, now seen corresponding path program 3 times [2022-11-02 21:07:52,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:52,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560492382] [2022-11-02 21:07:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:52,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:53,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560492382] [2022-11-02 21:07:53,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560492382] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:53,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713284584] [2022-11-02 21:07:53,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:07:53,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:53,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:53,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:53,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:07:53,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 21:07:53,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:53,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:07:53,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:53,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:53,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713284584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:53,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:07:53,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-11-02 21:07:53,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6268429] [2022-11-02 21:07:53,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:53,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:07:53,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:53,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:07:53,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:53,791 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-11-02 21:07:53,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 144 transitions, 589 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 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 21:07:53,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:53,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-11-02 21:07:53,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:55,690 INFO L130 PetriNetUnfolder]: 1545/6787 cut-off events. [2022-11-02 21:07:55,691 INFO L131 PetriNetUnfolder]: For 5623/6085 co-relation queries the response was YES. [2022-11-02 21:07:55,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15907 conditions, 6787 events. 1545/6787 cut-off events. For 5623/6085 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 72797 event pairs, 130 based on Foata normal form. 235/6462 useless extension candidates. Maximal degree in co-relation 15883. Up to 1061 conditions per place. [2022-11-02 21:07:55,842 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 57 selfloop transitions, 28 changer transitions 4/191 dead transitions. [2022-11-02 21:07:55,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 191 transitions, 971 flow [2022-11-02 21:07:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 21:07:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 913 transitions. [2022-11-02 21:07:55,846 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8846899224806202 [2022-11-02 21:07:55,847 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 913 transitions. [2022-11-02 21:07:55,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 913 transitions. [2022-11-02 21:07:55,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:55,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 913 transitions. [2022-11-02 21:07:55,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 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 21:07:55,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 0 states have call successors, (0), 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 21:07:55,856 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 0 states have call successors, (0), 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 21:07:55,857 INFO L175 Difference]: Start difference. First operand has 145 places, 144 transitions, 589 flow. Second operand 8 states and 913 transitions. [2022-11-02 21:07:55,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 191 transitions, 971 flow [2022-11-02 21:07:55,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 191 transitions, 886 flow, removed 39 selfloop flow, removed 3 redundant places. [2022-11-02 21:07:55,881 INFO L231 Difference]: Finished difference. Result has 150 places, 160 transitions, 709 flow [2022-11-02 21:07:55,882 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=709, PETRI_PLACES=150, PETRI_TRANSITIONS=160} [2022-11-02 21:07:55,883 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 41 predicate places. [2022-11-02 21:07:55,883 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 160 transitions, 709 flow [2022-11-02 21:07:55,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 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 21:07:55,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:55,885 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:55,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:56,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:56,107 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:56,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1685828757, now seen corresponding path program 4 times [2022-11-02 21:07:56,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:56,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479804468] [2022-11-02 21:07:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:56,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:56,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479804468] [2022-11-02 21:07:56,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479804468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:56,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648727136] [2022-11-02 21:07:56,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:07:56,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:56,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:56,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:56,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:07:56,745 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:07:56,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:56,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:07:56,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:57,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:57,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648727136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:57,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:07:57,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-11-02 21:07:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625023793] [2022-11-02 21:07:57,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:57,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:07:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:07:57,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:57,312 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-11-02 21:07:57,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 160 transitions, 709 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 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 21:07:57,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:57,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-11-02 21:07:57,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:59,625 INFO L130 PetriNetUnfolder]: 1866/8309 cut-off events. [2022-11-02 21:07:59,626 INFO L131 PetriNetUnfolder]: For 7253/8129 co-relation queries the response was YES. [2022-11-02 21:07:59,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19562 conditions, 8309 events. 1866/8309 cut-off events. For 7253/8129 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 93754 event pairs, 144 based on Foata normal form. 463/8078 useless extension candidates. Maximal degree in co-relation 19537. Up to 1309 conditions per place. [2022-11-02 21:07:59,876 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 50 selfloop transitions, 61 changer transitions 4/217 dead transitions. [2022-11-02 21:07:59,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 217 transitions, 1186 flow [2022-11-02 21:07:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:07:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:07:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1029 transitions. [2022-11-02 21:07:59,880 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8863049095607235 [2022-11-02 21:07:59,881 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1029 transitions. [2022-11-02 21:07:59,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1029 transitions. [2022-11-02 21:07:59,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:59,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1029 transitions. [2022-11-02 21:07:59,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.33333333333333) internal successors, (1029), 9 states have internal predecessors, (1029), 0 states have call successors, (0), 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 21:07:59,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 0 states have call successors, (0), 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 21:07:59,889 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 0 states have call successors, (0), 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 21:07:59,889 INFO L175 Difference]: Start difference. First operand has 150 places, 160 transitions, 709 flow. Second operand 9 states and 1029 transitions. [2022-11-02 21:07:59,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 217 transitions, 1186 flow [2022-11-02 21:07:59,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 217 transitions, 1154 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-11-02 21:07:59,908 INFO L231 Difference]: Finished difference. Result has 157 places, 179 transitions, 974 flow [2022-11-02 21:07:59,909 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=974, PETRI_PLACES=157, PETRI_TRANSITIONS=179} [2022-11-02 21:07:59,909 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 48 predicate places. [2022-11-02 21:07:59,910 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 179 transitions, 974 flow [2022-11-02 21:07:59,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 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 21:07:59,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:59,911 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:59,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:00,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 21:08:00,139 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:08:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:00,139 INFO L85 PathProgramCache]: Analyzing trace with hash 917025003, now seen corresponding path program 5 times [2022-11-02 21:08:00,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:00,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154813845] [2022-11-02 21:08:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:00,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:00,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154813845] [2022-11-02 21:08:00,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154813845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:00,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349927785] [2022-11-02 21:08:00,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:08:00,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:00,495 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:00,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:08:00,634 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-02 21:08:00,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:00,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:08:00,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:00,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:01,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349927785] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:01,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:01,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-11-02 21:08:01,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689042864] [2022-11-02 21:08:01,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:08:01,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:08:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:01,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-11-02 21:08:01,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 179 transitions, 974 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 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 21:08:01,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:08:01,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-11-02 21:08:01,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:08:03,971 INFO L130 PetriNetUnfolder]: 2247/10379 cut-off events. [2022-11-02 21:08:03,971 INFO L131 PetriNetUnfolder]: For 13903/15233 co-relation queries the response was YES. [2022-11-02 21:08:04,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26125 conditions, 10379 events. 2247/10379 cut-off events. For 13903/15233 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 123589 event pairs, 152 based on Foata normal form. 355/9895 useless extension candidates. Maximal degree in co-relation 26098. Up to 1466 conditions per place. [2022-11-02 21:08:04,107 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 83 selfloop transitions, 47 changer transitions 4/236 dead transitions. [2022-11-02 21:08:04,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 236 transitions, 1537 flow [2022-11-02 21:08:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:08:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1029 transitions. [2022-11-02 21:08:04,111 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8863049095607235 [2022-11-02 21:08:04,111 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1029 transitions. [2022-11-02 21:08:04,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1029 transitions. [2022-11-02 21:08:04,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:08:04,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1029 transitions. [2022-11-02 21:08:04,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.33333333333333) internal successors, (1029), 9 states have internal predecessors, (1029), 0 states have call successors, (0), 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 21:08:04,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 0 states have call successors, (0), 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 21:08:04,119 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 0 states have call successors, (0), 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 21:08:04,119 INFO L175 Difference]: Start difference. First operand has 157 places, 179 transitions, 974 flow. Second operand 9 states and 1029 transitions. [2022-11-02 21:08:04,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 236 transitions, 1537 flow [2022-11-02 21:08:04,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 236 transitions, 1349 flow, removed 81 selfloop flow, removed 4 redundant places. [2022-11-02 21:08:04,155 INFO L231 Difference]: Finished difference. Result has 162 places, 198 transitions, 1107 flow [2022-11-02 21:08:04,156 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1107, PETRI_PLACES=162, PETRI_TRANSITIONS=198} [2022-11-02 21:08:04,157 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 53 predicate places. [2022-11-02 21:08:04,157 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 198 transitions, 1107 flow [2022-11-02 21:08:04,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 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 21:08:04,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:08:04,158 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:04,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:04,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:08:04,375 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:08:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:04,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1634979069, now seen corresponding path program 6 times [2022-11-02 21:08:04,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:04,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164069389] [2022-11-02 21:08:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:04,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:04,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:04,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164069389] [2022-11-02 21:08:04,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164069389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:04,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476828052] [2022-11-02 21:08:04,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:08:04,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:08:04,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:04,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:08:04,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:08:04,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 21:08:04,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:04,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:08:05,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:05,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:05,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476828052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:05,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:08:05,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2022-11-02 21:08:05,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156251180] [2022-11-02 21:08:05,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:05,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:08:05,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:08:05,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:05,551 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2022-11-02 21:08:05,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 198 transitions, 1107 flow. Second operand has 10 states, 10 states have (on average 107.7) internal successors, (1077), 10 states have internal predecessors, (1077), 0 states have call successors, (0), 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 21:08:05,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:08:05,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2022-11-02 21:08:05,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:08:08,273 INFO L130 PetriNetUnfolder]: 2211/10079 cut-off events. [2022-11-02 21:08:08,274 INFO L131 PetriNetUnfolder]: For 13788/14942 co-relation queries the response was YES. [2022-11-02 21:08:08,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25473 conditions, 10079 events. 2211/10079 cut-off events. For 13788/14942 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 119251 event pairs, 102 based on Foata normal form. 649/9963 useless extension candidates. Maximal degree in co-relation 25446. Up to 907 conditions per place. [2022-11-02 21:08:08,413 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 44 selfloop transitions, 102 changer transitions 4/252 dead transitions. [2022-11-02 21:08:08,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 252 transitions, 1636 flow [2022-11-02 21:08:08,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:08:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 21:08:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1132 transitions. [2022-11-02 21:08:08,417 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8775193798449612 [2022-11-02 21:08:08,418 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1132 transitions. [2022-11-02 21:08:08,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1132 transitions. [2022-11-02 21:08:08,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:08:08,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1132 transitions. [2022-11-02 21:08:08,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.2) internal successors, (1132), 10 states have internal predecessors, (1132), 0 states have call successors, (0), 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 21:08:08,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 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 21:08:08,427 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 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 21:08:08,428 INFO L175 Difference]: Start difference. First operand has 162 places, 198 transitions, 1107 flow. Second operand 10 states and 1132 transitions. [2022-11-02 21:08:08,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 252 transitions, 1636 flow [2022-11-02 21:08:08,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 252 transitions, 1608 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-11-02 21:08:08,458 INFO L231 Difference]: Finished difference. Result has 170 places, 214 transitions, 1440 flow [2022-11-02 21:08:08,459 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1440, PETRI_PLACES=170, PETRI_TRANSITIONS=214} [2022-11-02 21:08:08,459 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 61 predicate places. [2022-11-02 21:08:08,460 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 214 transitions, 1440 flow [2022-11-02 21:08:08,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.7) internal successors, (1077), 10 states have internal predecessors, (1077), 0 states have call successors, (0), 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 21:08:08,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:08:08,461 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:08,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:08,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 21:08:08,687 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:08:08,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:08,687 INFO L85 PathProgramCache]: Analyzing trace with hash 391162216, now seen corresponding path program 7 times [2022-11-02 21:08:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:08,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830734258] [2022-11-02 21:08:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:08,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:08:08,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:08,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830734258] [2022-11-02 21:08:08,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830734258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:08,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:08,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:08:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509569552] [2022-11-02 21:08:08,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:08,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:08,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:08,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:08,761 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-11-02 21:08:08,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 214 transitions, 1440 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 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 21:08:08,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:08:08,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-11-02 21:08:08,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:08:10,545 INFO L130 PetriNetUnfolder]: 1596/7563 cut-off events. [2022-11-02 21:08:10,545 INFO L131 PetriNetUnfolder]: For 12985/14571 co-relation queries the response was YES. [2022-11-02 21:08:10,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20603 conditions, 7563 events. 1596/7563 cut-off events. For 12985/14571 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 85087 event pairs, 74 based on Foata normal form. 276/7249 useless extension candidates. Maximal degree in co-relation 20574. Up to 871 conditions per place. [2022-11-02 21:08:10,958 INFO L137 encePairwiseOnDemand]: 125/129 looper letters, 38 selfloop transitions, 4 changer transitions 0/217 dead transitions. [2022-11-02 21:08:10,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 217 transitions, 1532 flow [2022-11-02 21:08:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:08:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-02 21:08:10,961 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9043927648578811 [2022-11-02 21:08:10,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-02 21:08:10,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-02 21:08:10,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:08:10,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-02 21:08:10,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 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 21:08:10,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:08:10,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:08:10,966 INFO L175 Difference]: Start difference. First operand has 170 places, 214 transitions, 1440 flow. Second operand 3 states and 350 transitions. [2022-11-02 21:08:10,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 217 transitions, 1532 flow [2022-11-02 21:08:10,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 217 transitions, 1467 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-11-02 21:08:10,999 INFO L231 Difference]: Finished difference. Result has 167 places, 215 transitions, 1397 flow [2022-11-02 21:08:10,999 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1397, PETRI_PLACES=167, PETRI_TRANSITIONS=215} [2022-11-02 21:08:11,000 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 58 predicate places. [2022-11-02 21:08:11,000 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 215 transitions, 1397 flow [2022-11-02 21:08:11,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 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 21:08:11,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:08:11,001 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:11,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:08:11,002 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:08:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1610174931, now seen corresponding path program 8 times [2022-11-02 21:08:11,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:11,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854209228] [2022-11-02 21:08:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:08:11,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:11,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854209228] [2022-11-02 21:08:11,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854209228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:11,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:11,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:08:11,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593782296] [2022-11-02 21:08:11,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:11,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:11,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:11,069 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-11-02 21:08:11,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 215 transitions, 1397 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 21:08:11,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:08:11,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-11-02 21:08:11,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:08:14,236 INFO L130 PetriNetUnfolder]: 3382/12909 cut-off events. [2022-11-02 21:08:14,236 INFO L131 PetriNetUnfolder]: For 26422/27370 co-relation queries the response was YES. [2022-11-02 21:08:14,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37275 conditions, 12909 events. 3382/12909 cut-off events. For 26422/27370 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 156886 event pairs, 405 based on Foata normal form. 336/12046 useless extension candidates. Maximal degree in co-relation 37249. Up to 2074 conditions per place. [2022-11-02 21:08:14,402 INFO L137 encePairwiseOnDemand]: 125/129 looper letters, 60 selfloop transitions, 4 changer transitions 0/240 dead transitions. [2022-11-02 21:08:14,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 240 transitions, 1772 flow [2022-11-02 21:08:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:08:14,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2022-11-02 21:08:14,404 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2022-11-02 21:08:14,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2022-11-02 21:08:14,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2022-11-02 21:08:14,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:08:14,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2022-11-02 21:08:14,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 21:08:14,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:08:14,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:08:14,408 INFO L175 Difference]: Start difference. First operand has 167 places, 215 transitions, 1397 flow. Second operand 3 states and 352 transitions. [2022-11-02 21:08:14,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 240 transitions, 1772 flow [2022-11-02 21:08:14,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 240 transitions, 1762 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-02 21:08:14,455 INFO L231 Difference]: Finished difference. Result has 169 places, 216 transitions, 1409 flow [2022-11-02 21:08:14,455 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1409, PETRI_PLACES=169, PETRI_TRANSITIONS=216} [2022-11-02 21:08:14,456 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 60 predicate places. [2022-11-02 21:08:14,456 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 216 transitions, 1409 flow [2022-11-02 21:08:14,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 21:08:14,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:08:14,457 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:14,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:08:14,457 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:08:14,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash -592590034, now seen corresponding path program 9 times [2022-11-02 21:08:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:14,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083462031] [2022-11-02 21:08:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:14,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 21:08:14,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:14,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083462031] [2022-11-02 21:08:14,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083462031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:14,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:14,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:08:14,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729590946] [2022-11-02 21:08:14,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:14,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:14,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:14,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:14,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:14,514 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2022-11-02 21:08:14,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 216 transitions, 1409 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 21:08:14,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:08:14,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2022-11-02 21:08:14,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:08:14,914 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([334] L48-->L50: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][68], [2869#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 851#true, 131#(= ~g2~0 1), 1525#(and (<= 2 ~pos~0) (<= ~pos~0 2)), Black: 183#(and (<= 2 ~pos~0) (<= ~pos~0 2)), Black: 141#(= ~d2~0 1), Black: 184#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 156#(= ~d3~0 1), Black: 146#(= ~d1~0 1), 3541#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 180#true, 168#(not (= (* (div ~d2~0 256) 256) ~d2~0)), 58#L50true, 2197#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 68#L121-4true, 126#true, Black: 161#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), 162#(<= ~d1~0 (* 256 (div ~d1~0 256))), 70#L72true, Black: 169#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), 151#(= ~g3~0 1), Black: 3536#(= ~pos~0 0), 4214#(not (= ~g2~0 (* 256 (div ~g2~0 256)))), 52#L87true, 136#(= ~g1~0 1), 4220#(not (= (* (div ~g3~0 256) 256) ~g3~0)), Black: 854#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 176#(and (<= 0 ~d3~0) (<= ~d3~0 (* (div ~d3~0 256) 256))), Black: 4206#true, Black: 4212#true, 175#(not (= (* (div ~d3~0 256) 256) ~d3~0))]) [2022-11-02 21:08:14,914 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-02 21:08:14,914 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-02 21:08:14,914 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-02 21:08:14,914 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-02 21:08:15,174 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([334] L48-->L50: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][68], [Black: 131#(= ~g2~0 1), 2869#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 851#true, 1525#(and (<= 2 ~pos~0) (<= ~pos~0 2)), Black: 141#(= ~d2~0 1), Black: 183#(and (<= 2 ~pos~0) (<= ~pos~0 2)), Black: 184#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 146#(= ~d1~0 1), 156#(= ~d3~0 1), 3541#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 180#true, 168#(not (= (* (div ~d2~0 256) 256) ~d2~0)), 58#L50true, 2197#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 126#true, 68#L121-4true, Black: 161#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), 162#(<= ~d1~0 (* 256 (div ~d1~0 256))), 70#L72true, 151#(= ~g3~0 1), Black: 169#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), Black: 3536#(= ~pos~0 0), 52#L87true, 4214#(not (= ~g2~0 (* 256 (div ~g2~0 256)))), 136#(= ~g1~0 1), 4220#(not (= (* (div ~g3~0 256) 256) ~g3~0)), Black: 854#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 4206#true, Black: 176#(and (<= 0 ~d3~0) (<= ~d3~0 (* (div ~d3~0 256) 256))), 175#(not (= (* (div ~d3~0 256) 256) ~d3~0)), Black: 4212#true]) [2022-11-02 21:08:15,175 INFO L383 tUnfolder$Statistics]: this new event has 81 ancestors and is cut-off event [2022-11-02 21:08:15,175 INFO L386 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-11-02 21:08:15,175 INFO L386 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-11-02 21:08:15,175 INFO L386 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2022-11-02 21:08:15,412 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([334] L48-->L50: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][90], [Black: 131#(= ~g2~0 1), 851#true, Black: 141#(= ~d2~0 1), Black: 183#(and (<= 2 ~pos~0) (<= ~pos~0 2)), Black: 184#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 1524#(= ~pos~0 0), Black: 146#(= ~d1~0 1), 156#(= ~d3~0 1), 2865#(= ~pos~0 0), 3536#(= ~pos~0 0), 180#true, 58#L50true, 126#true, 68#L121-4true, 2194#(= ~pos~0 0), Black: 161#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), 162#(<= ~d1~0 (* 256 (div ~d1~0 256))), 70#L72true, 151#(= ~g3~0 1), Black: 168#(not (= (* (div ~d2~0 256) 256) ~d2~0)), 52#L87true, 4214#(not (= ~g2~0 (* 256 (div ~g2~0 256)))), 136#(= ~g1~0 1), Black: 854#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 4220#(not (= (* (div ~g3~0 256) 256) ~g3~0)), Black: 4206#true, Black: 176#(and (<= 0 ~d3~0) (<= ~d3~0 (* (div ~d3~0 256) 256))), Black: 4212#true, 175#(not (= (* (div ~d3~0 256) 256) ~d3~0)), 169#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0))]) [2022-11-02 21:08:15,412 INFO L383 tUnfolder$Statistics]: this new event has 86 ancestors and is cut-off event [2022-11-02 21:08:15,412 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-02 21:08:15,412 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-02 21:08:15,413 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-02 21:08:16,088 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L44-->L50: Formula: (= v_~pos~0_23 (+ v_~pos~0_24 1)) InVars {~pos~0=v_~pos~0_24} OutVars{thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_1|, ~pos~0=v_~pos~0_23} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post1, ~pos~0][114], [161#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), Black: 131#(= ~g2~0 1), 851#true, Black: 136#(= ~g1~0 1), Black: 141#(= ~d2~0 1), Black: 183#(and (<= 2 ~pos~0) (<= ~pos~0 2)), Black: 184#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 156#(= ~d3~0 1), Black: 146#(= ~d1~0 1), 180#true, 58#L50true, 2195#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 126#true, 1526#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 68#L121-4true, Black: 162#(<= ~d1~0 (* 256 (div ~d1~0 256))), 70#L72true, 3537#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 151#(= ~g3~0 1), Black: 3536#(= ~pos~0 0), Black: 168#(not (= (* (div ~d2~0 256) 256) ~d2~0)), 52#L87true, 4214#(not (= ~g2~0 (* 256 (div ~g2~0 256)))), 4220#(not (= (* (div ~g3~0 256) 256) ~g3~0)), Black: 854#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 176#(and (<= 0 ~d3~0) (<= ~d3~0 (* (div ~d3~0 256) 256))), Black: 4206#true, 175#(not (= (* (div ~d3~0 256) 256) ~d3~0)), Black: 4212#true, 169#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), 2866#(and (<= ~pos~0 1) (<= 1 ~pos~0))]) [2022-11-02 21:08:16,088 INFO L383 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-11-02 21:08:16,089 INFO L386 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2022-11-02 21:08:16,322 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-02 21:08:16,323 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-02 21:08:16,695 INFO L130 PetriNetUnfolder]: 3254/11853 cut-off events. [2022-11-02 21:08:16,695 INFO L131 PetriNetUnfolder]: For 24510/25234 co-relation queries the response was YES. [2022-11-02 21:08:16,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35510 conditions, 11853 events. 3254/11853 cut-off events. For 24510/25234 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 140952 event pairs, 421 based on Foata normal form. 357/10993 useless extension candidates. Maximal degree in co-relation 35483. Up to 2171 conditions per place. [2022-11-02 21:08:16,805 INFO L137 encePairwiseOnDemand]: 125/129 looper letters, 0 selfloop transitions, 0 changer transitions 235/235 dead transitions. [2022-11-02 21:08:16,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 235 transitions, 1770 flow [2022-11-02 21:08:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:08:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2022-11-02 21:08:16,808 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2022-11-02 21:08:16,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2022-11-02 21:08:16,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2022-11-02 21:08:16,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:08:16,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2022-11-02 21:08:16,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 21:08:16,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:08:16,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 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 21:08:16,812 INFO L175 Difference]: Start difference. First operand has 169 places, 216 transitions, 1409 flow. Second operand 3 states and 352 transitions. [2022-11-02 21:08:16,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 235 transitions, 1770 flow [2022-11-02 21:08:16,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 235 transitions, 1711 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-02 21:08:16,869 INFO L231 Difference]: Finished difference. Result has 162 places, 0 transitions, 0 flow [2022-11-02 21:08:16,869 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=160, 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=3, PETRI_FLOW=0, PETRI_PLACES=162, PETRI_TRANSITIONS=0} [2022-11-02 21:08:16,870 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 53 predicate places. [2022-11-02 21:08:16,870 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 0 transitions, 0 flow [2022-11-02 21:08:16,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 21:08:16,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 21:08:16,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-02 21:08:16,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 21:08:16,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-02 21:08:16,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:08:16,875 INFO L444 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:16,880 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 21:08:16,880 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:08:16,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:08:16 BasicIcfg [2022-11-02 21:08:16,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:08:16,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:08:16,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:08:16,887 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:08:16,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:40" (3/4) ... [2022-11-02 21:08:16,891 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:08:16,897 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 21:08:16,898 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 21:08:16,898 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-02 21:08:16,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-02 21:08:16,903 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 21:08:16,903 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 21:08:16,903 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:08:16,940 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:08:16,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:08:16,941 INFO L158 Benchmark]: Toolchain (without parser) took 37268.89ms. Allocated memory was 125.8MB in the beginning and 8.0GB in the end (delta: 7.9GB). Free memory was 91.1MB in the beginning and 7.1GB in the end (delta: -7.0GB). Peak memory consumption was 880.6MB. Max. memory is 16.1GB. [2022-11-02 21:08:16,941 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 30.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:08:16,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.25ms. Allocated memory is still 125.8MB. Free memory was 90.9MB in the beginning and 100.8MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:08:16,942 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.32ms. Allocated memory is still 125.8MB. Free memory was 100.8MB in the beginning and 99.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:08:16,943 INFO L158 Benchmark]: Boogie Preprocessor took 51.86ms. Allocated memory is still 125.8MB. Free memory was 99.1MB in the beginning and 97.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:08:16,943 INFO L158 Benchmark]: RCFGBuilder took 556.22ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 82.4MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 21:08:16,943 INFO L158 Benchmark]: TraceAbstraction took 36086.05ms. Allocated memory was 125.8MB in the beginning and 8.0GB in the end (delta: 7.9GB). Free memory was 81.9MB in the beginning and 7.1GB in the end (delta: -7.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2022-11-02 21:08:16,944 INFO L158 Benchmark]: Witness Printer took 54.04ms. Allocated memory is still 8.0GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:08:16,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 30.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.25ms. Allocated memory is still 125.8MB. Free memory was 90.9MB in the beginning and 100.8MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.32ms. Allocated memory is still 125.8MB. Free memory was 100.8MB in the beginning and 99.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.86ms. Allocated memory is still 125.8MB. Free memory was 99.1MB in the beginning and 97.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 556.22ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 82.4MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 36086.05ms. Allocated memory was 125.8MB in the beginning and 8.0GB in the end (delta: 7.9GB). Free memory was 81.9MB in the beginning and 7.1GB in the end (delta: -7.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Witness Printer took 54.04ms. Allocated memory is still 8.0GB. Free memory was 7.1GB in the beginning and 7.1GB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 127]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 156 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 35.9s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 23.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 277 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 277 mSDsluCounter, 490 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1160 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2182 IncrementalHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 128 mSDtfsCounter, 2182 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1430 GetRequests, 1314 SyntacticMatches, 50 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1440occurred in iteration=16, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 2542 NumberOfCodeBlocks, 2507 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 3171 ConstructedInterpolants, 0 QuantifiedInterpolants, 9628 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1449 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 31 InterpolantComputations, 13 PerfectInterpolantSequences, 145/442 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 21:08:16,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17151d88-b360-47ab-b4d2-5b1c53d2b68f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE