./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro --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 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c --- 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-8393723 [2022-11-18 18:32:29,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:32:29,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:32:29,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:32:29,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:32:29,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:32:29,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:32:29,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:32:29,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:32:29,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:32:29,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:32:29,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:32:29,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:32:29,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:32:29,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:32:29,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:32:29,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:32:29,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:32:29,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:32:29,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:32:29,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:32:29,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:32:29,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:32:29,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:32:29,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:32:29,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:32:29,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:32:29,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:32:29,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:32:29,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:32:29,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:32:29,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:32:29,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:32:29,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:32:29,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:32:29,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:32:29,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:32:29,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:32:29,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:32:29,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:32:29,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:32:29,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:32:30,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:32:30,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:32:30,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:32:30,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:32:30,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:32:30,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:32:30,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:32:30,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:32:30,013 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:32:30,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:32:30,014 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:32:30,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:32:30,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:32:30,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:32:30,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:32:30,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:32:30,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:32:30,016 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:32:30,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:32:30,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:32:30,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:32:30,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:32:30,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:32:30,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:32:30,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:32:30,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:32:30,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:32:30,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:32:30,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:32:30,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:32:30,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:32:30,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:32:30,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:32:30,021 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_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 251696ec6cec82b3ac56ff493f8f4412eaff7e5010650cc9da1e4c426de80d8c [2022-11-18 18:32:30,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:32:30,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:32:30,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:32:30,360 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:32:30,361 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:32:30,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2022-11-18 18:32:30,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/data/91620e375/0c349f2dde91428cabd126c37ea77b15/FLAG085b48a93 [2022-11-18 18:32:31,006 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:32:31,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2022-11-18 18:32:31,016 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/data/91620e375/0c349f2dde91428cabd126c37ea77b15/FLAG085b48a93 [2022-11-18 18:32:31,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/data/91620e375/0c349f2dde91428cabd126c37ea77b15 [2022-11-18 18:32:31,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:32:31,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:32:31,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:32:31,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:32:31,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:32:31,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5292f576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31, skipping insertion in model container [2022-11-18 18:32:31,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:32:31,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:32:31,606 WARN L234 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_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-11-18 18:32:31,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:32:31,625 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:32:31,649 WARN L234 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_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2022-11-18 18:32:31,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:32:31,667 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:32:31,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31 WrapperNode [2022-11-18 18:32:31,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:32:31,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:32:31,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:32:31,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:32:31,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,706 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-11-18 18:32:31,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:32:31,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:32:31,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:32:31,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:32:31,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:32:31,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:32:31,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:32:31,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:32:31,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (1/1) ... [2022-11-18 18:32:31,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:32:31,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:31,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:32:31,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:32:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:32:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:32:31,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:32:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:32:31,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:32:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:32:31,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:32:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:32:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:32:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:32:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:32:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:32:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:32:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:32:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:32:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:32:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:32:31,827 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:32:31,935 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:32:31,937 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:32:32,296 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:32:32,394 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:32:32,394 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:32:32,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:32 BoogieIcfgContainer [2022-11-18 18:32:32,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:32:32,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:32:32,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:32:32,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:32:32,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:32:31" (1/3) ... [2022-11-18 18:32:32,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9671bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:32, skipping insertion in model container [2022-11-18 18:32:32,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:31" (2/3) ... [2022-11-18 18:32:32,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9671bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:32, skipping insertion in model container [2022-11-18 18:32:32,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:32" (3/3) ... [2022-11-18 18:32:32,423 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2022-11-18 18:32:32,432 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:32:32,447 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:32:32,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:32:32,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:32:32,597 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:32:32,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 154 transitions, 332 flow [2022-11-18 18:32:32,789 INFO L130 PetriNetUnfolder]: 12/151 cut-off events. [2022-11-18 18:32:32,790 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:32:32,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 151 events. 12/151 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2022-11-18 18:32:32,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 154 transitions, 332 flow [2022-11-18 18:32:32,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 140 transitions, 298 flow [2022-11-18 18:32:32,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:32:32,854 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;@15d0eaca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:32:32,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 18:32:32,936 INFO L130 PetriNetUnfolder]: 12/139 cut-off events. [2022-11-18 18:32:32,941 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:32:32,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:32,943 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:32,944 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)] === [2022-11-18 18:32:32,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash 405465620, now seen corresponding path program 1 times [2022-11-18 18:32:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360738762] [2022-11-18 18:32:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:32,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:33,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:33,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360738762] [2022-11-18 18:32:33,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360738762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:33,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:33,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145201715] [2022-11-18 18:32:33,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:33,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:32:33,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:32:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:32:33,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 154 [2022-11-18 18:32:33,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 298 flow. Second operand has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:33,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 154 [2022-11-18 18:32:33,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:33,654 INFO L130 PetriNetUnfolder]: 41/265 cut-off events. [2022-11-18 18:32:33,654 INFO L131 PetriNetUnfolder]: For 49/50 co-relation queries the response was YES. [2022-11-18 18:32:33,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 265 events. 41/265 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 715 event pairs, 15 based on Foata normal form. 42/276 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2022-11-18 18:32:33,664 INFO L137 encePairwiseOnDemand]: 146/154 looper letters, 9 selfloop transitions, 0 changer transitions 4/132 dead transitions. [2022-11-18 18:32:33,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 132 transitions, 300 flow [2022-11-18 18:32:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:32:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:32:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 289 transitions. [2022-11-18 18:32:33,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9383116883116883 [2022-11-18 18:32:33,688 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 289 transitions. [2022-11-18 18:32:33,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 289 transitions. [2022-11-18 18:32:33,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:33,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 289 transitions. [2022-11-18 18:32:33,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 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) [2022-11-18 18:32:33,715 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 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) [2022-11-18 18:32:33,717 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 298 flow. Second operand 2 states and 289 transitions. [2022-11-18 18:32:33,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 132 transitions, 300 flow [2022-11-18 18:32:33,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 132 transitions, 288 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 18:32:33,728 INFO L231 Difference]: Finished difference. Result has 133 places, 128 transitions, 262 flow [2022-11-18 18:32:33,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=133, PETRI_TRANSITIONS=128} [2022-11-18 18:32:33,740 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, -5 predicate places. [2022-11-18 18:32:33,740 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 128 transitions, 262 flow [2022-11-18 18:32:33,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:33,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:33,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:33,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:32:33,743 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)] === [2022-11-18 18:32:33,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:33,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2142861004, now seen corresponding path program 1 times [2022-11-18 18:32:33,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:33,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929157520] [2022-11-18 18:32:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:33,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:34,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:34,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929157520] [2022-11-18 18:32:34,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929157520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:34,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:34,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:32:34,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972364527] [2022-11-18 18:32:34,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:34,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:32:34,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:34,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:32:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:32:34,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 154 [2022-11-18 18:32:34,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 128 transitions, 262 flow. Second operand has 8 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:34,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:34,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 154 [2022-11-18 18:32:34,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:34,795 INFO L130 PetriNetUnfolder]: 295/679 cut-off events. [2022-11-18 18:32:34,796 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 18:32:34,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 679 events. 295/679 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2975 event pairs, 167 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 1135. Up to 421 conditions per place. [2022-11-18 18:32:34,802 INFO L137 encePairwiseOnDemand]: 144/154 looper letters, 44 selfloop transitions, 6 changer transitions 4/136 dead transitions. [2022-11-18 18:32:34,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 136 transitions, 386 flow [2022-11-18 18:32:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:32:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:32:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 815 transitions. [2022-11-18 18:32:34,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.661525974025974 [2022-11-18 18:32:34,807 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 815 transitions. [2022-11-18 18:32:34,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 815 transitions. [2022-11-18 18:32:34,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:34,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 815 transitions. [2022-11-18 18:32:34,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.875) internal successors, (815), 8 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:34,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:34,817 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:34,818 INFO L175 Difference]: Start difference. First operand has 133 places, 128 transitions, 262 flow. Second operand 8 states and 815 transitions. [2022-11-18 18:32:34,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 136 transitions, 386 flow [2022-11-18 18:32:34,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:32:34,823 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 290 flow [2022-11-18 18:32:34,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=290, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-11-18 18:32:34,824 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2022-11-18 18:32:34,825 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 290 flow [2022-11-18 18:32:34,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:34,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:34,826 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:34,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:32:34,827 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)] === [2022-11-18 18:32:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:34,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1947980679, now seen corresponding path program 1 times [2022-11-18 18:32:34,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:34,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118929257] [2022-11-18 18:32:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:34,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:35,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:35,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118929257] [2022-11-18 18:32:35,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118929257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:35,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860652272] [2022-11-18 18:32:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:35,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:35,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:35,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:35,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:32:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:35,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:32:35,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:35,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:35,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860652272] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:35,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:32:35,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-18 18:32:35,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696054759] [2022-11-18 18:32:35,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:35,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:32:35,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:32:35,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:32:35,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 154 [2022-11-18 18:32:35,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:35,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:35,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 154 [2022-11-18 18:32:35,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:36,027 INFO L130 PetriNetUnfolder]: 175/511 cut-off events. [2022-11-18 18:32:36,027 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 18:32:36,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 511 events. 175/511 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2090 event pairs, 45 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 827. Up to 137 conditions per place. [2022-11-18 18:32:36,036 INFO L137 encePairwiseOnDemand]: 146/154 looper letters, 33 selfloop transitions, 7 changer transitions 0/137 dead transitions. [2022-11-18 18:32:36,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 388 flow [2022-11-18 18:32:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:32:36,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:32:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 838 transitions. [2022-11-18 18:32:36,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7773654916512059 [2022-11-18 18:32:36,040 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 838 transitions. [2022-11-18 18:32:36,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 838 transitions. [2022-11-18 18:32:36,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:36,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 838 transitions. [2022-11-18 18:32:36,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:36,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:36,049 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:36,049 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 290 flow. Second operand 7 states and 838 transitions. [2022-11-18 18:32:36,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 388 flow [2022-11-18 18:32:36,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 370 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-18 18:32:36,058 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 305 flow [2022-11-18 18:32:36,059 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2022-11-18 18:32:36,062 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2022-11-18 18:32:36,063 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 305 flow [2022-11-18 18:32:36,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:36,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:36,065 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:36,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:36,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:36,272 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)] === [2022-11-18 18:32:36,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1971120592, now seen corresponding path program 1 times [2022-11-18 18:32:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:36,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543526681] [2022-11-18 18:32:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:36,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:36,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:36,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543526681] [2022-11-18 18:32:36,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543526681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:36,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89055534] [2022-11-18 18:32:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:36,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:36,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:36,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:36,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:32:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:36,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:32:36,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:36,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:37,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89055534] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:37,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:32:37,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-18 18:32:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424234792] [2022-11-18 18:32:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:37,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:32:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:37,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:32:37,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:37,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 154 [2022-11-18 18:32:37,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 305 flow. Second operand has 9 states, 9 states have (on average 110.33333333333333) internal successors, (993), 9 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:37,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 154 [2022-11-18 18:32:37,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:37,685 INFO L130 PetriNetUnfolder]: 600/1204 cut-off events. [2022-11-18 18:32:37,685 INFO L131 PetriNetUnfolder]: For 404/584 co-relation queries the response was YES. [2022-11-18 18:32:37,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1204 events. 600/1204 cut-off events. For 404/584 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6302 event pairs, 103 based on Foata normal form. 180/1238 useless extension candidates. Maximal degree in co-relation 2453. Up to 249 conditions per place. [2022-11-18 18:32:37,696 INFO L137 encePairwiseOnDemand]: 142/154 looper letters, 74 selfloop transitions, 19 changer transitions 0/183 dead transitions. [2022-11-18 18:32:37,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 183 transitions, 644 flow [2022-11-18 18:32:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:32:37,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:32:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1264 transitions. [2022-11-18 18:32:37,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7461629279811098 [2022-11-18 18:32:37,701 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1264 transitions. [2022-11-18 18:32:37,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1264 transitions. [2022-11-18 18:32:37,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:37,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1264 transitions. [2022-11-18 18:32:37,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.9090909090909) internal successors, (1264), 11 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 154.0) internal successors, (1848), 12 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,710 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 154.0) internal successors, (1848), 12 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,710 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 305 flow. Second operand 11 states and 1264 transitions. [2022-11-18 18:32:37,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 183 transitions, 644 flow [2022-11-18 18:32:37,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 183 transitions, 631 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:32:37,716 INFO L231 Difference]: Finished difference. Result has 152 places, 143 transitions, 404 flow [2022-11-18 18:32:37,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=404, PETRI_PLACES=152, PETRI_TRANSITIONS=143} [2022-11-18 18:32:37,717 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 14 predicate places. [2022-11-18 18:32:37,717 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 143 transitions, 404 flow [2022-11-18 18:32:37,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.33333333333333) internal successors, (993), 9 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:37,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:37,718 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:37,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:37,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 18:32:37,925 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)] === [2022-11-18 18:32:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash 797684560, now seen corresponding path program 2 times [2022-11-18 18:32:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:37,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10872388] [2022-11-18 18:32:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:38,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:38,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10872388] [2022-11-18 18:32:38,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10872388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:38,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201279338] [2022-11-18 18:32:38,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:32:38,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:38,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:38,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:38,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:32:38,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:32:38,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:32:38,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:32:38,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:32:38,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:38,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201279338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:38,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:38,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-18 18:32:38,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973440972] [2022-11-18 18:32:38,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:38,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:32:38,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:38,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:32:38,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:32:38,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 154 [2022-11-18 18:32:38,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 143 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 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) [2022-11-18 18:32:38,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:38,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 154 [2022-11-18 18:32:38,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:39,054 INFO L130 PetriNetUnfolder]: 412/876 cut-off events. [2022-11-18 18:32:39,055 INFO L131 PetriNetUnfolder]: For 824/929 co-relation queries the response was YES. [2022-11-18 18:32:39,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 876 events. 412/876 cut-off events. For 824/929 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3967 event pairs, 118 based on Foata normal form. 131/985 useless extension candidates. Maximal degree in co-relation 2190. Up to 334 conditions per place. [2022-11-18 18:32:39,066 INFO L137 encePairwiseOnDemand]: 145/154 looper letters, 42 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2022-11-18 18:32:39,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 145 transitions, 503 flow [2022-11-18 18:32:39,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:32:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:32:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 865 transitions. [2022-11-18 18:32:39,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7021103896103896 [2022-11-18 18:32:39,070 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 865 transitions. [2022-11-18 18:32:39,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 865 transitions. [2022-11-18 18:32:39,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:39,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 865 transitions. [2022-11-18 18:32:39,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 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) [2022-11-18 18:32:39,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:39,078 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:39,078 INFO L175 Difference]: Start difference. First operand has 152 places, 143 transitions, 404 flow. Second operand 8 states and 865 transitions. [2022-11-18 18:32:39,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 145 transitions, 503 flow [2022-11-18 18:32:39,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 490 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-18 18:32:39,089 INFO L231 Difference]: Finished difference. Result has 151 places, 137 transitions, 381 flow [2022-11-18 18:32:39,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=381, PETRI_PLACES=151, PETRI_TRANSITIONS=137} [2022-11-18 18:32:39,092 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 13 predicate places. [2022-11-18 18:32:39,092 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 137 transitions, 381 flow [2022-11-18 18:32:39,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 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) [2022-11-18 18:32:39,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:32:39,093 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:39,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:39,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:39,300 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)] === [2022-11-18 18:32:39,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:39,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1636578117, now seen corresponding path program 1 times [2022-11-18 18:32:39,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:39,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897047101] [2022-11-18 18:32:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:39,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:41,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:41,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897047101] [2022-11-18 18:32:41,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897047101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:41,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390277622] [2022-11-18 18:32:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:41,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:41,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:41,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:41,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:32:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:41,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:32:41,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:42,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:32:42,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-11-18 18:32:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:43,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:45,187 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:32:45,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 161 [2022-11-18 18:32:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:54,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390277622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:54,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:32:54,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 19] total 50 [2022-11-18 18:32:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660702015] [2022-11-18 18:32:54,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:54,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 18:32:54,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 18:32:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=2064, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 18:32:54,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 154 [2022-11-18 18:32:54,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 137 transitions, 381 flow. Second operand has 50 states, 50 states have (on average 69.76) internal successors, (3488), 50 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:54,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:54,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 154 [2022-11-18 18:32:54,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:33:00,605 INFO L130 PetriNetUnfolder]: 4843/7968 cut-off events. [2022-11-18 18:33:00,605 INFO L131 PetriNetUnfolder]: For 6581/6581 co-relation queries the response was YES. [2022-11-18 18:33:00,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20310 conditions, 7968 events. 4843/7968 cut-off events. For 6581/6581 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 52666 event pairs, 450 based on Foata normal form. 1/7880 useless extension candidates. Maximal degree in co-relation 20298. Up to 2919 conditions per place. [2022-11-18 18:33:00,677 INFO L137 encePairwiseOnDemand]: 121/154 looper letters, 314 selfloop transitions, 108 changer transitions 9/484 dead transitions. [2022-11-18 18:33:00,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 484 transitions, 2430 flow [2022-11-18 18:33:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 18:33:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 18:33:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3313 transitions. [2022-11-18 18:33:00,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4889315230224321 [2022-11-18 18:33:00,686 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3313 transitions. [2022-11-18 18:33:00,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3313 transitions. [2022-11-18 18:33:00,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:33:00,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3313 transitions. [2022-11-18 18:33:00,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 75.29545454545455) internal successors, (3313), 44 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:00,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 154.0) internal successors, (6930), 45 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:00,713 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 154.0) internal successors, (6930), 45 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:00,714 INFO L175 Difference]: Start difference. First operand has 151 places, 137 transitions, 381 flow. Second operand 44 states and 3313 transitions. [2022-11-18 18:33:00,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 484 transitions, 2430 flow [2022-11-18 18:33:00,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 484 transitions, 2397 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:33:00,798 INFO L231 Difference]: Finished difference. Result has 210 places, 237 transitions, 1128 flow [2022-11-18 18:33:00,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1128, PETRI_PLACES=210, PETRI_TRANSITIONS=237} [2022-11-18 18:33:00,803 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 72 predicate places. [2022-11-18 18:33:00,803 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 237 transitions, 1128 flow [2022-11-18 18:33:00,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 69.76) internal successors, (3488), 50 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:00,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:33:00,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:00,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:01,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:01,017 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)] === [2022-11-18 18:33:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1813782651, now seen corresponding path program 2 times [2022-11-18 18:33:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:01,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468626762] [2022-11-18 18:33:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:03,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468626762] [2022-11-18 18:33:03,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468626762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665384845] [2022-11-18 18:33:03,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:33:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:03,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:03,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:03,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:33:03,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:33:03,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:03,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 18:33:03,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:04,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:33:05,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:33:05,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:33:05,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:33:06,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:33:06,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 43 [2022-11-18 18:33:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:07,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:19,383 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~max2~0 c_~max3~0)) (.cse8 (= c_~max1~0 c_~max2~0))) (and (or .cse0 (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (~M~0 Int) (v_ArrVal_192 (Array Int Int))) (let ((.cse1 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< c_~max3~0 (select .cse1 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (not (< c_~max1~0 .cse2)) (< 0 ~M~0) (< ~M~0 0) (= .cse2 c_~max2~0)))))) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (~M~0 Int)) (let ((.cse4 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse3 (select .cse4 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (not (< c_~max3~0 .cse3)) (< 0 ~M~0) (< ~M~0 0) (<= .cse3 c_~max2~0) (< c_~max1~0 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (= .cse3 c_~max1~0))))) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (~M~0 Int)) (let ((.cse7 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse6 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (select .cse7 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (not (< c_~max3~0 .cse5)) (not (< c_~max1~0 .cse6)) (< 0 ~M~0) (< ~M~0 0) (= .cse6 c_~max2~0) (< c_~max2~0 .cse5))))) (or (and (or .cse8 .cse0) (or (= c_~max1~0 c_~max3~0) (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (~M~0 Int) (v_ArrVal_192 (Array Int Int))) (let ((.cse9 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (< c_~max3~0 (select .cse9 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (< 0 ~M~0) (< ~M~0 0) (< c_~max1~0 (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) (or (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (~M~0 Int) (v_ArrVal_192 (Array Int Int))) (let ((.cse11 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse10 (select .cse11 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (not (< c_~max3~0 .cse10)) (< 0 ~M~0) (< ~M~0 0) (< c_~max1~0 (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (< c_~max2~0 .cse10))))) .cse8) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (~M~0 Int)) (let ((.cse12 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< c_~max3~0 (select .cse12 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (= .cse13 c_~max3~0) (not (< c_~max1~0 .cse13)) (< 0 ~M~0) (< ~M~0 0))))))) is different from false [2022-11-18 18:33:20,257 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:33:20,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2022-11-18 18:33:20,283 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:33:20,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 255 treesize of output 247 [2022-11-18 18:33:20,304 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:33:20,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 231 [2022-11-18 18:33:20,323 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:33:20,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 199 [2022-11-18 18:33:20,345 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:33:20,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 97 [2022-11-18 18:33:20,543 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 18:33:20,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 1 [2022-11-18 18:33:20,554 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 18:33:20,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 1 [2022-11-18 18:33:20,566 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 18:33:20,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 1 [2022-11-18 18:33:20,577 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 18:33:20,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 1 [2022-11-18 18:33:20,588 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 18:33:20,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 1 [2022-11-18 18:33:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 18:33:21,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665384845] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:33:21,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:33:21,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 30, 24] total 71 [2022-11-18 18:33:21,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922901302] [2022-11-18 18:33:21,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:33:21,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-11-18 18:33:21,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:21,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-11-18 18:33:21,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=851, Invalid=3937, Unknown=46, NotChecked=136, Total=4970 [2022-11-18 18:33:21,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2022-11-18 18:33:21,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 237 transitions, 1128 flow. Second operand has 71 states, 71 states have (on average 57.929577464788736) internal successors, (4113), 71 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:21,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:33:21,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2022-11-18 18:33:21,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:33:49,677 INFO L130 PetriNetUnfolder]: 12004/19743 cut-off events. [2022-11-18 18:33:49,677 INFO L131 PetriNetUnfolder]: For 57651/57927 co-relation queries the response was YES. [2022-11-18 18:33:49,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67835 conditions, 19743 events. 12004/19743 cut-off events. For 57651/57927 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 150987 event pairs, 363 based on Foata normal form. 10/19676 useless extension candidates. Maximal degree in co-relation 67803. Up to 4153 conditions per place. [2022-11-18 18:33:49,944 INFO L137 encePairwiseOnDemand]: 111/154 looper letters, 767 selfloop transitions, 685 changer transitions 30/1530 dead transitions. [2022-11-18 18:33:49,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 1530 transitions, 11167 flow [2022-11-18 18:33:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-11-18 18:33:49,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2022-11-18 18:33:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 8504 transitions. [2022-11-18 18:33:49,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4120953673192479 [2022-11-18 18:33:49,965 INFO L72 ComplementDD]: Start complementDD. Operand 134 states and 8504 transitions. [2022-11-18 18:33:49,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 8504 transitions. [2022-11-18 18:33:49,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:33:49,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 134 states and 8504 transitions. [2022-11-18 18:33:49,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 135 states, 134 states have (on average 63.46268656716418) internal successors, (8504), 134 states have internal predecessors, (8504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 135 states, 135 states have (on average 154.0) internal successors, (20790), 135 states have internal predecessors, (20790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,023 INFO L81 ComplementDD]: Finished complementDD. Result has 135 states, 135 states have (on average 154.0) internal successors, (20790), 135 states have internal predecessors, (20790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,023 INFO L175 Difference]: Start difference. First operand has 210 places, 237 transitions, 1128 flow. Second operand 134 states and 8504 transitions. [2022-11-18 18:33:50,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 1530 transitions, 11167 flow [2022-11-18 18:33:50,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1530 transitions, 11078 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-11-18 18:33:50,727 INFO L231 Difference]: Finished difference. Result has 386 places, 904 transitions, 8025 flow [2022-11-18 18:33:50,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=134, PETRI_FLOW=8025, PETRI_PLACES=386, PETRI_TRANSITIONS=904} [2022-11-18 18:33:50,729 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 248 predicate places. [2022-11-18 18:33:50,729 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 904 transitions, 8025 flow [2022-11-18 18:33:50,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 57.929577464788736) internal successors, (4113), 71 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:50,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:33:50,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:50,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 18:33:50,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:50,939 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)] === [2022-11-18 18:33:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:50,940 INFO L85 PathProgramCache]: Analyzing trace with hash 919756817, now seen corresponding path program 3 times [2022-11-18 18:33:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:50,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912026478] [2022-11-18 18:33:50,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:50,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:52,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912026478] [2022-11-18 18:33:52,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912026478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170161080] [2022-11-18 18:33:52,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:33:52,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:52,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:52,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:52,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:33:53,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 18:33:53,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:53,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 18:33:53,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:54,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:33:54,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-11-18 18:33:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:33:55,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:57,248 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:33:57,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 161 [2022-11-18 18:34:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:34:04,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170161080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:04,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:34:04,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 19] total 54 [2022-11-18 18:34:04,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252319860] [2022-11-18 18:34:04,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:04,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-18 18:34:04,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:04,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-18 18:34:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=2433, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 18:34:04,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-18 18:34:04,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 904 transitions, 8025 flow. Second operand has 54 states, 54 states have (on average 68.5925925925926) internal successors, (3704), 54 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:04,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:04,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-18 18:34:04,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:29,594 INFO L130 PetriNetUnfolder]: 20941/33649 cut-off events. [2022-11-18 18:34:29,594 INFO L131 PetriNetUnfolder]: For 364814/366239 co-relation queries the response was YES. [2022-11-18 18:34:30,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167581 conditions, 33649 events. 20941/33649 cut-off events. For 364814/366239 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 271729 event pairs, 1348 based on Foata normal form. 44/33447 useless extension candidates. Maximal degree in co-relation 167492. Up to 10168 conditions per place. [2022-11-18 18:34:30,294 INFO L137 encePairwiseOnDemand]: 117/154 looper letters, 1220 selfloop transitions, 1702 changer transitions 20/2995 dead transitions. [2022-11-18 18:34:30,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 2995 transitions, 33231 flow [2022-11-18 18:34:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-11-18 18:34:30,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2022-11-18 18:34:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 9444 transitions. [2022-11-18 18:34:30,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4753850800362428 [2022-11-18 18:34:30,313 INFO L72 ComplementDD]: Start complementDD. Operand 129 states and 9444 transitions. [2022-11-18 18:34:30,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 9444 transitions. [2022-11-18 18:34:30,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:30,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 129 states and 9444 transitions. [2022-11-18 18:34:30,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 130 states, 129 states have (on average 73.20930232558139) internal successors, (9444), 129 states have internal predecessors, (9444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 130 states, 130 states have (on average 154.0) internal successors, (20020), 130 states have internal predecessors, (20020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,387 INFO L81 ComplementDD]: Finished complementDD. Result has 130 states, 130 states have (on average 154.0) internal successors, (20020), 130 states have internal predecessors, (20020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,387 INFO L175 Difference]: Start difference. First operand has 386 places, 904 transitions, 8025 flow. Second operand 129 states and 9444 transitions. [2022-11-18 18:34:30,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 2995 transitions, 33231 flow [2022-11-18 18:34:42,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 2995 transitions, 30475 flow, removed 1364 selfloop flow, removed 20 redundant places. [2022-11-18 18:34:42,136 INFO L231 Difference]: Finished difference. Result has 541 places, 2212 transitions, 24531 flow [2022-11-18 18:34:42,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6965, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=129, PETRI_FLOW=24531, PETRI_PLACES=541, PETRI_TRANSITIONS=2212} [2022-11-18 18:34:42,139 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 403 predicate places. [2022-11-18 18:34:42,139 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 2212 transitions, 24531 flow [2022-11-18 18:34:42,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 68.5925925925926) internal successors, (3704), 54 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:42,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:42,141 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:42,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:42,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:42,346 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)] === [2022-11-18 18:34:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash -500171267, now seen corresponding path program 4 times [2022-11-18 18:34:42,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:42,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054318055] [2022-11-18 18:34:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:42,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:44,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:44,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054318055] [2022-11-18 18:34:44,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054318055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:44,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891361757] [2022-11-18 18:34:44,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:34:44,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:44,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:44,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:44,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:34:44,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:34:44,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:34:44,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 18:34:44,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:46,389 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:34:46,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-11-18 18:34:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:46,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:48,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:34:48,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 161 [2022-11-18 18:34:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:56,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891361757] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:56,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:34:56,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 22] total 60 [2022-11-18 18:34:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176623269] [2022-11-18 18:34:56,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:56,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-18 18:34:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:56,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-18 18:34:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=2916, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 18:34:56,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-18 18:34:56,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 2212 transitions, 24531 flow. Second operand has 60 states, 60 states have (on average 68.06666666666666) internal successors, (4084), 60 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:56,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:56,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-18 18:34:56,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:39,538 INFO L130 PetriNetUnfolder]: 33445/54811 cut-off events. [2022-11-18 18:35:39,538 INFO L131 PetriNetUnfolder]: For 1382127/1394601 co-relation queries the response was YES. [2022-11-18 18:35:40,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340256 conditions, 54811 events. 33445/54811 cut-off events. For 1382127/1394601 co-relation queries the response was YES. Maximal size of possible extension queue 2720. Compared 482101 event pairs, 1782 based on Foata normal form. 330/54844 useless extension candidates. Maximal degree in co-relation 340120. Up to 10852 conditions per place. [2022-11-18 18:35:41,594 INFO L137 encePairwiseOnDemand]: 111/154 looper letters, 1813 selfloop transitions, 3737 changer transitions 15/5646 dead transitions. [2022-11-18 18:35:41,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 5646 transitions, 78190 flow [2022-11-18 18:35:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-18 18:35:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-11-18 18:35:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 6625 transitions. [2022-11-18 18:35:41,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.488857733175915 [2022-11-18 18:35:41,608 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 6625 transitions. [2022-11-18 18:35:41,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 6625 transitions. [2022-11-18 18:35:41,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:41,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 6625 transitions. [2022-11-18 18:35:41,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 75.2840909090909) internal successors, (6625), 88 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:41,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 154.0) internal successors, (13706), 89 states have internal predecessors, (13706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:41,641 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 154.0) internal successors, (13706), 89 states have internal predecessors, (13706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:41,642 INFO L175 Difference]: Start difference. First operand has 541 places, 2212 transitions, 24531 flow. Second operand 88 states and 6625 transitions. [2022-11-18 18:35:41,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 5646 transitions, 78190 flow [2022-11-18 18:36:57,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 5646 transitions, 69863 flow, removed 4137 selfloop flow, removed 18 redundant places. [2022-11-18 18:36:57,826 INFO L231 Difference]: Finished difference. Result has 655 places, 4568 transitions, 62844 flow [2022-11-18 18:36:57,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=22427, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1499, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=62844, PETRI_PLACES=655, PETRI_TRANSITIONS=4568} [2022-11-18 18:36:57,829 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 517 predicate places. [2022-11-18 18:36:57,829 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 4568 transitions, 62844 flow [2022-11-18 18:36:57,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 68.06666666666666) internal successors, (4084), 60 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:57,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:57,830 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:57,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:58,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:36:58,036 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)] === [2022-11-18 18:36:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash -954196179, now seen corresponding path program 5 times [2022-11-18 18:36:58,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:58,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091696427] [2022-11-18 18:36:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:36:59,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:59,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091696427] [2022-11-18 18:36:59,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091696427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:36:59,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582217137] [2022-11-18 18:36:59,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:36:59,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:36:59,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:36:59,877 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:36:59,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f5936dc-e5f8-4c07-812f-72a6a52ea7d8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:36:59,999 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:36:59,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:00,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 18:37:00,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:01,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:01,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-18 18:37:02,635 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:37:02,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 43 [2022-11-18 18:37:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:03,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:04,962 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~max1~0 c_~max2~0))) (and (or (and (= c_~max1~0 c_~max3~0) (< c_~max2~0 c_~max3~0)) (forall ((v_ArrVal_290 (Array Int Int)) (~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (< c_~max3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_290) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4)))))) (and .cse0 (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_290 (Array Int Int)) (~M~0 Int)) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_290) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= (+ 2 ~M~0) c_~N~0) (not (< c_~max3~0 .cse1)) (not (< ~M~0 c_~N~0)) (= .cse1 c_~max1~0) (<= .cse1 c_~max2~0)))) (or .cse0 (forall ((v_ArrVal_290 (Array Int Int)) (~M~0 Int)) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_290) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (< c_~max2~0 .cse2) (<= (+ 2 ~M~0) c_~N~0) (not (< c_~max3~0 .cse2)) (not (< ~M~0 c_~N~0)))))))) is different from false [2022-11-18 18:37:05,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:37:05,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 275 treesize of output 275 [2022-11-18 18:37:05,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 162 [2022-11-18 18:37:05,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 150 [2022-11-18 18:37:05,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 144 [2022-11-18 18:37:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 18:37:15,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582217137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:15,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:37:15,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 28] total 66 [2022-11-18 18:37:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071375655] [2022-11-18 18:37:15,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:15,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-18 18:37:15,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:15,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-18 18:37:15,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=3661, Unknown=1, NotChecked=126, Total=4290 [2022-11-18 18:37:15,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 154 [2022-11-18 18:37:15,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 4568 transitions, 62844 flow. Second operand has 66 states, 66 states have (on average 57.07575757575758) internal successors, (3767), 66 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:15,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:15,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 154 [2022-11-18 18:37:15,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand