./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --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_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/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_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/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_5086790c-13a3-489d-9a51-c516316cbe49/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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- 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 20:25:06,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:25:06,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:25:06,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:25:06,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:25:06,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:25:06,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:25:06,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:25:06,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:25:06,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:25:06,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:25:06,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:25:06,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:25:06,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:25:06,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:25:06,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:25:06,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:25:06,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:25:06,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:25:06,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:25:06,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:25:06,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:25:06,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:25:06,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:25:06,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:25:06,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:25:06,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:25:06,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:25:06,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:25:06,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:25:06,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:25:06,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:25:06,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:25:06,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:25:06,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:25:06,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:25:06,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:25:06,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:25:06,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:25:06,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:25:06,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:25:06,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:25:06,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:25:06,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:25:06,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:25:06,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:25:06,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:25:06,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:25:06,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:25:06,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:25:06,461 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:25:06,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:25:06,463 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:25:06,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:25:06,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:25:06,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:25:06,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:25:06,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:25:06,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:25:06,465 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:25:06,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:25:06,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:25:06,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:25:06,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:25:06,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:25:06,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:25:06,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:25:06,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:25:06,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:25:06,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:25:06,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:25:06,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:25:06,470 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:25:06,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:25:06,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:25:06,471 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_5086790c-13a3-489d-9a51-c516316cbe49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2022-11-18 20:25:06,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:25:06,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:25:06,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:25:06,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:25:06,858 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:25:06,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-11-18 20:25:06,921 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/data/3f6092929/a84f49d96fc941a39dade2dac6c9fd81/FLAGc0f7ec079 [2022-11-18 20:25:07,573 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:25:07,573 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-11-18 20:25:07,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/data/3f6092929/a84f49d96fc941a39dade2dac6c9fd81/FLAGc0f7ec079 [2022-11-18 20:25:07,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/data/3f6092929/a84f49d96fc941a39dade2dac6c9fd81 [2022-11-18 20:25:07,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:25:07,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:25:07,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:07,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:25:07,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:25:07,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:07" (1/1) ... [2022-11-18 20:25:07,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fae30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:07, skipping insertion in model container [2022-11-18 20:25:07,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:07" (1/1) ... [2022-11-18 20:25:07,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:25:07,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:25:08,155 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_5086790c-13a3-489d-9a51-c516316cbe49/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-11-18 20:25:08,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:08,418 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:25:08,433 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_5086790c-13a3-489d-9a51-c516316cbe49/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-11-18 20:25:08,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:08,530 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:25:08,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08 WrapperNode [2022-11-18 20:25:08,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:08,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:25:08,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:25:08,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:25:08,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,608 INFO L138 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-11-18 20:25:08,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:25:08,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:25:08,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:25:08,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:25:08,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,641 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:25:08,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:25:08,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:25:08,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:25:08,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (1/1) ... [2022-11-18 20:25:08,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:25:08,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:08,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:25:08,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:25:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-18 20:25:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-18 20:25:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:25:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:25:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:25:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:25:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-11-18 20:25:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-11-18 20:25:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:25:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:25:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:25:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:25:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:25:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:25:08,746 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 20:25:08,902 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:25:08,904 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:25:09,242 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:25:09,250 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:25:09,251 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:25:09,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:09 BoogieIcfgContainer [2022-11-18 20:25:09,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:25:09,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:25:09,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:25:09,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:25:09,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:25:07" (1/3) ... [2022-11-18 20:25:09,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8565dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:09, skipping insertion in model container [2022-11-18 20:25:09,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:08" (2/3) ... [2022-11-18 20:25:09,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8565dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:09, skipping insertion in model container [2022-11-18 20:25:09,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:09" (3/3) ... [2022-11-18 20:25:09,276 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2022-11-18 20:25:09,285 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:25:09,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:25:09,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-18 20:25:09,301 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:25:09,431 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:25:09,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 167 transitions, 349 flow [2022-11-18 20:25:09,573 INFO L130 PetriNetUnfolder]: 5/164 cut-off events. [2022-11-18 20:25:09,574 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:25:09,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 5/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2022-11-18 20:25:09,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 167 transitions, 349 flow [2022-11-18 20:25:09,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 164 transitions, 337 flow [2022-11-18 20:25:09,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:25:09,625 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;@f523338, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:25:09,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 20:25:09,700 INFO L130 PetriNetUnfolder]: 1/114 cut-off events. [2022-11-18 20:25:09,700 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:25:09,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:09,702 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] [2022-11-18 20:25:09,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:25:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:09,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1927931624, now seen corresponding path program 1 times [2022-11-18 20:25:09,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:09,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104090693] [2022-11-18 20:25:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:09,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:10,461 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 20:25:10,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:10,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104090693] [2022-11-18 20:25:10,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104090693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:10,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:10,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:25:10,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403077956] [2022-11-18 20:25:10,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:10,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:25:10,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:25:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:25:10,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2022-11-18 20:25:10,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 164 transitions, 337 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 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 20:25:10,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:10,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2022-11-18 20:25:10,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:11,795 INFO L130 PetriNetUnfolder]: 1049/3536 cut-off events. [2022-11-18 20:25:11,795 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-11-18 20:25:11,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5266 conditions, 3536 events. 1049/3536 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 33352 event pairs, 294 based on Foata normal form. 502/3865 useless extension candidates. Maximal degree in co-relation 5215. Up to 818 conditions per place. [2022-11-18 20:25:11,847 INFO L137 encePairwiseOnDemand]: 153/167 looper letters, 96 selfloop transitions, 21 changer transitions 0/252 dead transitions. [2022-11-18 20:25:11,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 252 transitions, 789 flow [2022-11-18 20:25:11,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:25:11,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:25:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2371 transitions. [2022-11-18 20:25:11,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8873502994011976 [2022-11-18 20:25:11,875 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2371 transitions. [2022-11-18 20:25:11,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2371 transitions. [2022-11-18 20:25:11,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:11,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2371 transitions. [2022-11-18 20:25:11,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 148.1875) internal successors, (2371), 16 states have internal predecessors, (2371), 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 20:25:11,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 20:25:11,948 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 20:25:11,950 INFO L175 Difference]: Start difference. First operand has 169 places, 164 transitions, 337 flow. Second operand 16 states and 2371 transitions. [2022-11-18 20:25:11,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 252 transitions, 789 flow [2022-11-18 20:25:11,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 252 transitions, 772 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:25:11,962 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 432 flow [2022-11-18 20:25:11,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=432, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2022-11-18 20:25:11,968 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 13 predicate places. [2022-11-18 20:25:11,969 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 432 flow [2022-11-18 20:25:11,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 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 20:25:11,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:11,970 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] [2022-11-18 20:25:11,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:25:11,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:25:11,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2018063857, now seen corresponding path program 1 times [2022-11-18 20:25:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:11,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960580703] [2022-11-18 20:25:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:11,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:12,297 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 20:25:12,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:12,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960580703] [2022-11-18 20:25:12,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960580703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:12,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:12,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:25:12,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280276151] [2022-11-18 20:25:12,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:12,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:25:12,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:12,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:25:12,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:25:12,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 167 [2022-11-18 20:25:12,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:12,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:12,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 167 [2022-11-18 20:25:12,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:14,329 INFO L130 PetriNetUnfolder]: 2863/8295 cut-off events. [2022-11-18 20:25:14,329 INFO L131 PetriNetUnfolder]: For 1788/1788 co-relation queries the response was YES. [2022-11-18 20:25:14,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14905 conditions, 8295 events. 2863/8295 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 87760 event pairs, 594 based on Foata normal form. 0/7960 useless extension candidates. Maximal degree in co-relation 14846. Up to 1801 conditions per place. [2022-11-18 20:25:14,441 INFO L137 encePairwiseOnDemand]: 153/167 looper letters, 108 selfloop transitions, 69 changer transitions 0/313 dead transitions. [2022-11-18 20:25:14,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 313 transitions, 1259 flow [2022-11-18 20:25:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:25:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:25:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2239 transitions. [2022-11-18 20:25:14,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8379491017964071 [2022-11-18 20:25:14,448 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2239 transitions. [2022-11-18 20:25:14,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2239 transitions. [2022-11-18 20:25:14,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:14,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2239 transitions. [2022-11-18 20:25:14,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.9375) internal successors, (2239), 16 states have internal predecessors, (2239), 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 20:25:14,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 20:25:14,464 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 20:25:14,465 INFO L175 Difference]: Start difference. First operand has 182 places, 175 transitions, 432 flow. Second operand 16 states and 2239 transitions. [2022-11-18 20:25:14,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 313 transitions, 1259 flow [2022-11-18 20:25:14,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 313 transitions, 1257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:25:14,501 INFO L231 Difference]: Finished difference. Result has 201 places, 242 transitions, 936 flow [2022-11-18 20:25:14,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=936, PETRI_PLACES=201, PETRI_TRANSITIONS=242} [2022-11-18 20:25:14,503 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 32 predicate places. [2022-11-18 20:25:14,503 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 242 transitions, 936 flow [2022-11-18 20:25:14,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:14,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:14,504 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] [2022-11-18 20:25:14,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:25:14,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:25:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1620460108, now seen corresponding path program 1 times [2022-11-18 20:25:14,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:14,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004433102] [2022-11-18 20:25:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:14,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:14,954 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 20:25:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:14,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004433102] [2022-11-18 20:25:14,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004433102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:14,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:14,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:25:14,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729558091] [2022-11-18 20:25:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:14,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:25:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:25:14,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:25:14,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2022-11-18 20:25:14,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 242 transitions, 936 flow. Second operand has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 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 20:25:14,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:14,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2022-11-18 20:25:14,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:19,255 INFO L130 PetriNetUnfolder]: 5807/22295 cut-off events. [2022-11-18 20:25:19,255 INFO L131 PetriNetUnfolder]: For 13220/13441 co-relation queries the response was YES. [2022-11-18 20:25:19,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43673 conditions, 22295 events. 5807/22295 cut-off events. For 13220/13441 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 304421 event pairs, 1667 based on Foata normal form. 0/20986 useless extension candidates. Maximal degree in co-relation 43610. Up to 4845 conditions per place. [2022-11-18 20:25:19,668 INFO L137 encePairwiseOnDemand]: 157/167 looper letters, 166 selfloop transitions, 227 changer transitions 54/603 dead transitions. [2022-11-18 20:25:19,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 603 transitions, 4140 flow [2022-11-18 20:25:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:25:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:25:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2316 transitions. [2022-11-18 20:25:19,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8667664670658682 [2022-11-18 20:25:19,676 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2316 transitions. [2022-11-18 20:25:19,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2316 transitions. [2022-11-18 20:25:19,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:19,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2316 transitions. [2022-11-18 20:25:19,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 144.75) internal successors, (2316), 16 states have internal predecessors, (2316), 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 20:25:19,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 20:25:19,690 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 20:25:19,691 INFO L175 Difference]: Start difference. First operand has 201 places, 242 transitions, 936 flow. Second operand 16 states and 2316 transitions. [2022-11-18 20:25:19,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 603 transitions, 4140 flow [2022-11-18 20:25:19,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 603 transitions, 4138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:25:19,976 INFO L231 Difference]: Finished difference. Result has 223 places, 469 transitions, 3493 flow [2022-11-18 20:25:19,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3493, PETRI_PLACES=223, PETRI_TRANSITIONS=469} [2022-11-18 20:25:19,978 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 54 predicate places. [2022-11-18 20:25:19,978 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 469 transitions, 3493 flow [2022-11-18 20:25:19,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 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 20:25:19,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:19,979 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] [2022-11-18 20:25:19,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:25:19,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:25:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1356120241, now seen corresponding path program 1 times [2022-11-18 20:25:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:19,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002015124] [2022-11-18 20:25:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:20,116 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 20:25:20,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:20,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002015124] [2022-11-18 20:25:20,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002015124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:20,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:20,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:20,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919700252] [2022-11-18 20:25:20,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:20,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:25:20,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:25:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:25:20,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 167 [2022-11-18 20:25:20,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 469 transitions, 3493 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 20:25:20,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:20,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 167 [2022-11-18 20:25:20,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:24,707 INFO L130 PetriNetUnfolder]: 4456/24930 cut-off events. [2022-11-18 20:25:24,708 INFO L131 PetriNetUnfolder]: For 7900/7904 co-relation queries the response was YES. [2022-11-18 20:25:24,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44625 conditions, 24930 events. 4456/24930 cut-off events. For 7900/7904 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 367113 event pairs, 1362 based on Foata normal form. 700/25224 useless extension candidates. Maximal degree in co-relation 44548. Up to 5167 conditions per place. [2022-11-18 20:25:24,998 INFO L137 encePairwiseOnDemand]: 154/167 looper letters, 25 selfloop transitions, 13 changer transitions 0/362 dead transitions. [2022-11-18 20:25:24,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 362 transitions, 2389 flow [2022-11-18 20:25:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:25:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:25:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2022-11-18 20:25:25,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8882235528942116 [2022-11-18 20:25:25,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2022-11-18 20:25:25,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2022-11-18 20:25:25,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:25,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2022-11-18 20:25:25,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 20:25:25,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 20:25:25,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 20:25:25,181 INFO L175 Difference]: Start difference. First operand has 223 places, 469 transitions, 3493 flow. Second operand 3 states and 445 transitions. [2022-11-18 20:25:25,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 362 transitions, 2389 flow [2022-11-18 20:25:25,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 362 transitions, 2387 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:25:25,706 INFO L231 Difference]: Finished difference. Result has 225 places, 357 transitions, 2352 flow [2022-11-18 20:25:25,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2352, PETRI_PLACES=225, PETRI_TRANSITIONS=357} [2022-11-18 20:25:25,709 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 56 predicate places. [2022-11-18 20:25:25,710 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 357 transitions, 2352 flow [2022-11-18 20:25:25,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 20:25:25,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:25,719 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] [2022-11-18 20:25:25,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:25:25,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:25:25,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:25,722 INFO L85 PathProgramCache]: Analyzing trace with hash 543633168, now seen corresponding path program 1 times [2022-11-18 20:25:25,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:25,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88077428] [2022-11-18 20:25:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:25,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:25,912 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 20:25:25,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:25,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88077428] [2022-11-18 20:25:25,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88077428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:25,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:25,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:25:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106438794] [2022-11-18 20:25:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:25,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:25:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:25:25,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:25:25,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-11-18 20:25:25,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 357 transitions, 2352 flow. Second operand has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 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 20:25:25,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:25,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-11-18 20:25:25,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:35,804 INFO L130 PetriNetUnfolder]: 11813/53518 cut-off events. [2022-11-18 20:25:35,804 INFO L131 PetriNetUnfolder]: For 26379/27529 co-relation queries the response was YES. [2022-11-18 20:25:36,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109902 conditions, 53518 events. 11813/53518 cut-off events. For 26379/27529 co-relation queries the response was YES. Maximal size of possible extension queue 2047. Compared 839638 event pairs, 3257 based on Foata normal form. 438/52429 useless extension candidates. Maximal degree in co-relation 109828. Up to 8791 conditions per place. [2022-11-18 20:25:36,450 INFO L137 encePairwiseOnDemand]: 158/167 looper letters, 114 selfloop transitions, 200 changer transitions 0/475 dead transitions. [2022-11-18 20:25:36,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 475 transitions, 3645 flow [2022-11-18 20:25:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:25:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:25:36,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2014 transitions. [2022-11-18 20:25:36,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8614200171086399 [2022-11-18 20:25:36,464 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2014 transitions. [2022-11-18 20:25:36,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2014 transitions. [2022-11-18 20:25:36,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:36,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2014 transitions. [2022-11-18 20:25:36,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.85714285714286) internal successors, (2014), 14 states have internal predecessors, (2014), 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 20:25:36,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 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 20:25:36,490 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 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 20:25:36,490 INFO L175 Difference]: Start difference. First operand has 225 places, 357 transitions, 2352 flow. Second operand 14 states and 2014 transitions. [2022-11-18 20:25:36,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 475 transitions, 3645 flow [2022-11-18 20:25:37,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 475 transitions, 3632 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:25:37,947 INFO L231 Difference]: Finished difference. Result has 246 places, 397 transitions, 3370 flow [2022-11-18 20:25:37,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3370, PETRI_PLACES=246, PETRI_TRANSITIONS=397} [2022-11-18 20:25:37,948 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 77 predicate places. [2022-11-18 20:25:37,949 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 397 transitions, 3370 flow [2022-11-18 20:25:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 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 20:25:37,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:37,950 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] [2022-11-18 20:25:37,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:25:37,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:25:37,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2065081593, now seen corresponding path program 1 times [2022-11-18 20:25:37,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:37,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170546637] [2022-11-18 20:25:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:37,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:38,211 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 20:25:38,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:38,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170546637] [2022-11-18 20:25:38,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170546637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:38,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:38,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:25:38,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076080045] [2022-11-18 20:25:38,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:38,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:25:38,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:38,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:25:38,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:25:38,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2022-11-18 20:25:38,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 397 transitions, 3370 flow. Second operand has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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 20:25:38,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:38,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2022-11-18 20:25:38,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:40,579 INFO L130 PetriNetUnfolder]: 1834/12191 cut-off events. [2022-11-18 20:25:40,579 INFO L131 PetriNetUnfolder]: For 12085/12545 co-relation queries the response was YES. [2022-11-18 20:25:40,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28808 conditions, 12191 events. 1834/12191 cut-off events. For 12085/12545 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 162011 event pairs, 123 based on Foata normal form. 589/12711 useless extension candidates. Maximal degree in co-relation 28715. Up to 2024 conditions per place. [2022-11-18 20:25:40,721 INFO L137 encePairwiseOnDemand]: 159/167 looper letters, 36 selfloop transitions, 11 changer transitions 0/360 dead transitions. [2022-11-18 20:25:40,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 360 transitions, 2899 flow [2022-11-18 20:25:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 680 transitions. [2022-11-18 20:25:40,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8143712574850299 [2022-11-18 20:25:40,726 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 680 transitions. [2022-11-18 20:25:40,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 680 transitions. [2022-11-18 20:25:40,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:40,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 680 transitions. [2022-11-18 20:25:40,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 20:25:40,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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 20:25:40,732 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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 20:25:40,732 INFO L175 Difference]: Start difference. First operand has 246 places, 397 transitions, 3370 flow. Second operand 5 states and 680 transitions. [2022-11-18 20:25:40,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 360 transitions, 2899 flow [2022-11-18 20:25:40,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 360 transitions, 2869 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-11-18 20:25:40,962 INFO L231 Difference]: Finished difference. Result has 248 places, 352 transitions, 2765 flow [2022-11-18 20:25:40,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2765, PETRI_PLACES=248, PETRI_TRANSITIONS=352} [2022-11-18 20:25:40,967 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 79 predicate places. [2022-11-18 20:25:40,968 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 352 transitions, 2765 flow [2022-11-18 20:25:40,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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 20:25:40,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:40,969 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] [2022-11-18 20:25:40,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:25:40,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:25:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:40,970 INFO L85 PathProgramCache]: Analyzing trace with hash 901272500, now seen corresponding path program 1 times [2022-11-18 20:25:40,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:40,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109716616] [2022-11-18 20:25:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:40,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:41,207 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 20:25:41,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:41,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109716616] [2022-11-18 20:25:41,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109716616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:41,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:41,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:25:41,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573697436] [2022-11-18 20:25:41,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:41,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:25:41,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:25:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:25:41,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-11-18 20:25:41,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 352 transitions, 2765 flow. Second operand has 8 states, 8 states have (on average 137.125) internal successors, (1097), 8 states have internal predecessors, (1097), 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 20:25:41,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:41,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-11-18 20:25:41,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:46,312 INFO L130 PetriNetUnfolder]: 5617/25679 cut-off events. [2022-11-18 20:25:46,312 INFO L131 PetriNetUnfolder]: For 28418/29034 co-relation queries the response was YES. [2022-11-18 20:25:46,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61076 conditions, 25679 events. 5617/25679 cut-off events. For 28418/29034 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 355417 event pairs, 1879 based on Foata normal form. 313/25299 useless extension candidates. Maximal degree in co-relation 60991. Up to 3253 conditions per place. [2022-11-18 20:25:46,626 INFO L137 encePairwiseOnDemand]: 158/167 looper letters, 109 selfloop transitions, 162 changer transitions 0/430 dead transitions. [2022-11-18 20:25:46,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 430 transitions, 3645 flow [2022-11-18 20:25:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:25:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:25:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2009 transitions. [2022-11-18 20:25:46,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592814371257484 [2022-11-18 20:25:46,632 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2009 transitions. [2022-11-18 20:25:46,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2009 transitions. [2022-11-18 20:25:46,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:46,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2009 transitions. [2022-11-18 20:25:46,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 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 20:25:46,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 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 20:25:46,647 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 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 20:25:46,647 INFO L175 Difference]: Start difference. First operand has 248 places, 352 transitions, 2765 flow. Second operand 14 states and 2009 transitions. [2022-11-18 20:25:46,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 430 transitions, 3645 flow [2022-11-18 20:25:47,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 430 transitions, 3633 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:25:47,391 INFO L231 Difference]: Finished difference. Result has 263 places, 359 transitions, 3221 flow [2022-11-18 20:25:47,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3221, PETRI_PLACES=263, PETRI_TRANSITIONS=359} [2022-11-18 20:25:47,393 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 94 predicate places. [2022-11-18 20:25:47,393 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 359 transitions, 3221 flow [2022-11-18 20:25:47,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.125) internal successors, (1097), 8 states have internal predecessors, (1097), 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 20:25:47,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:47,394 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] [2022-11-18 20:25:47,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:25:47,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:25:47,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1750968311, now seen corresponding path program 1 times [2022-11-18 20:25:47,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:47,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047350558] [2022-11-18 20:25:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:47,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:47,672 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 20:25:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:47,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047350558] [2022-11-18 20:25:47,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047350558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:47,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:47,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:25:47,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042195231] [2022-11-18 20:25:47,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:47,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:25:47,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:47,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:25:47,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:25:47,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 167 [2022-11-18 20:25:47,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 359 transitions, 3221 flow. Second operand has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 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 20:25:47,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:47,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 167 [2022-11-18 20:25:47,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:52,710 INFO L130 PetriNetUnfolder]: 5973/26715 cut-off events. [2022-11-18 20:25:52,710 INFO L131 PetriNetUnfolder]: For 40152/41558 co-relation queries the response was YES. [2022-11-18 20:25:52,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65779 conditions, 26715 events. 5973/26715 cut-off events. For 40152/41558 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 372141 event pairs, 1548 based on Foata normal form. 407/26253 useless extension candidates. Maximal degree in co-relation 65687. Up to 3440 conditions per place. [2022-11-18 20:25:53,020 INFO L137 encePairwiseOnDemand]: 155/167 looper letters, 185 selfloop transitions, 106 changer transitions 2/454 dead transitions. [2022-11-18 20:25:53,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 454 transitions, 4697 flow [2022-11-18 20:25:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:25:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:25:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1518 transitions. [2022-11-18 20:25:53,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8263473053892215 [2022-11-18 20:25:53,026 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1518 transitions. [2022-11-18 20:25:53,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1518 transitions. [2022-11-18 20:25:53,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:53,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1518 transitions. [2022-11-18 20:25:53,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 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 20:25:53,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 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 20:25:53,036 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 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 20:25:53,037 INFO L175 Difference]: Start difference. First operand has 263 places, 359 transitions, 3221 flow. Second operand 11 states and 1518 transitions. [2022-11-18 20:25:53,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 454 transitions, 4697 flow [2022-11-18 20:25:53,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 454 transitions, 4343 flow, removed 27 selfloop flow, removed 7 redundant places. [2022-11-18 20:25:53,503 INFO L231 Difference]: Finished difference. Result has 271 places, 387 transitions, 3455 flow [2022-11-18 20:25:53,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3455, PETRI_PLACES=271, PETRI_TRANSITIONS=387} [2022-11-18 20:25:53,505 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 102 predicate places. [2022-11-18 20:25:53,505 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 387 transitions, 3455 flow [2022-11-18 20:25:53,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 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 20:25:53,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:53,506 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] [2022-11-18 20:25:53,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:25:53,506 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:25:53,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1958315824, now seen corresponding path program 1 times [2022-11-18 20:25:53,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:53,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207735772] [2022-11-18 20:25:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:53,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:53,739 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 20:25:53,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:53,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207735772] [2022-11-18 20:25:53,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207735772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:53,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:53,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:25:53,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842930854] [2022-11-18 20:25:53,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:53,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:25:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:25:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:25:53,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-11-18 20:25:53,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 387 transitions, 3455 flow. Second operand has 8 states, 8 states have (on average 137.25) internal successors, (1098), 8 states have internal predecessors, (1098), 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 20:25:53,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:53,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-11-18 20:25:53,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:00,805 INFO L130 PetriNetUnfolder]: 8027/34769 cut-off events. [2022-11-18 20:26:00,805 INFO L131 PetriNetUnfolder]: For 63439/65311 co-relation queries the response was YES. [2022-11-18 20:26:01,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88971 conditions, 34769 events. 8027/34769 cut-off events. For 63439/65311 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 499652 event pairs, 1677 based on Foata normal form. 399/34293 useless extension candidates. Maximal degree in co-relation 88878. Up to 4548 conditions per place. [2022-11-18 20:26:01,240 INFO L137 encePairwiseOnDemand]: 159/167 looper letters, 160 selfloop transitions, 107 changer transitions 42/490 dead transitions. [2022-11-18 20:26:01,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 490 transitions, 5091 flow [2022-11-18 20:26:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:26:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:26:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1573 transitions. [2022-11-18 20:26:01,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8562874251497006 [2022-11-18 20:26:01,245 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1573 transitions. [2022-11-18 20:26:01,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1573 transitions. [2022-11-18 20:26:01,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:01,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1573 transitions. [2022-11-18 20:26:01,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 143.0) internal successors, (1573), 11 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:26:01,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 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 20:26:01,261 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 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 20:26:01,261 INFO L175 Difference]: Start difference. First operand has 271 places, 387 transitions, 3455 flow. Second operand 11 states and 1573 transitions. [2022-11-18 20:26:01,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 490 transitions, 5091 flow [2022-11-18 20:26:02,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 490 transitions, 4988 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-18 20:26:02,382 INFO L231 Difference]: Finished difference. Result has 277 places, 386 transitions, 3495 flow [2022-11-18 20:26:02,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3495, PETRI_PLACES=277, PETRI_TRANSITIONS=386} [2022-11-18 20:26:02,384 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 108 predicate places. [2022-11-18 20:26:02,384 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 386 transitions, 3495 flow [2022-11-18 20:26:02,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.25) internal successors, (1098), 8 states have internal predecessors, (1098), 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 20:26:02,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:02,385 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] [2022-11-18 20:26:02,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:26:02,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-11-18 20:26:02,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:02,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1496833383, now seen corresponding path program 1 times [2022-11-18 20:26:02,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:02,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26174754] [2022-11-18 20:26:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:02,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:02,712 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 20:26:02,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:02,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26174754] [2022-11-18 20:26:02,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26174754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:02,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:02,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:26:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794466048] [2022-11-18 20:26:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:02,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:26:02,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:26:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:26:02,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2022-11-18 20:26:02,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 386 transitions, 3495 flow. Second operand has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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 20:26:02,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:02,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2022-11-18 20:26:02,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:04,138 INFO L130 PetriNetUnfolder]: 360/4518 cut-off events. [2022-11-18 20:26:04,138 INFO L131 PetriNetUnfolder]: For 5298/5410 co-relation queries the response was YES. [2022-11-18 20:26:04,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11083 conditions, 4518 events. 360/4518 cut-off events. For 5298/5410 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 51464 event pairs, 43 based on Foata normal form. 41/4551 useless extension candidates. Maximal degree in co-relation 10981. Up to 629 conditions per place. [2022-11-18 20:26:04,167 INFO L137 encePairwiseOnDemand]: 155/167 looper letters, 0 selfloop transitions, 0 changer transitions 276/276 dead transitions. [2022-11-18 20:26:04,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 276 transitions, 2051 flow [2022-11-18 20:26:04,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:26:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:26:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 681 transitions. [2022-11-18 20:26:04,169 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8155688622754491 [2022-11-18 20:26:04,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 681 transitions. [2022-11-18 20:26:04,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 681 transitions. [2022-11-18 20:26:04,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:04,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 681 transitions. [2022-11-18 20:26:04,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 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 20:26:04,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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 20:26:04,175 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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 20:26:04,176 INFO L175 Difference]: Start difference. First operand has 277 places, 386 transitions, 3495 flow. Second operand 5 states and 681 transitions. [2022-11-18 20:26:04,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 276 transitions, 2051 flow [2022-11-18 20:26:04,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 276 transitions, 1761 flow, removed 26 selfloop flow, removed 25 redundant places. [2022-11-18 20:26:04,225 INFO L231 Difference]: Finished difference. Result has 246 places, 0 transitions, 0 flow [2022-11-18 20:26:04,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=246, PETRI_TRANSITIONS=0} [2022-11-18 20:26:04,226 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 77 predicate places. [2022-11-18 20:26:04,226 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 0 transitions, 0 flow [2022-11-18 20:26:04,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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 20:26:04,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2022-11-18 20:26:04,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2022-11-18 20:26:04,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2022-11-18 20:26:04,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2022-11-18 20:26:04,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-11-18 20:26:04,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2022-11-18 20:26:04,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2022-11-18 20:26:04,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2022-11-18 20:26:04,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2022-11-18 20:26:04,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:26:04,232 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:04,238 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:26:04,239 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:26:04,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:26:04 BasicIcfg [2022-11-18 20:26:04,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:26:04,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:26:04,245 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:26:04,245 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:26:04,246 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:09" (3/4) ... [2022-11-18 20:26:04,249 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:26:04,256 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-11-18 20:26:04,256 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2022-11-18 20:26:04,256 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-18 20:26:04,261 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-18 20:26:04,261 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:26:04,262 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:26:04,262 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:26:04,298 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:26:04,298 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:26:04,299 INFO L158 Benchmark]: Toolchain (without parser) took 56469.41ms. Allocated memory was 107.0MB in the beginning and 13.2GB in the end (delta: 13.1GB). Free memory was 63.9MB in the beginning and 11.1GB in the end (delta: -11.0GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2022-11-18 20:26:04,300 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:26:04,300 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.30ms. Allocated memory is still 107.0MB. Free memory was 63.8MB in the beginning and 71.3MB in the end (delta: -7.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-11-18 20:26:04,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.61ms. Allocated memory is still 107.0MB. Free memory was 71.3MB in the beginning and 69.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:26:04,301 INFO L158 Benchmark]: Boogie Preprocessor took 36.57ms. Allocated memory is still 107.0MB. Free memory was 69.0MB in the beginning and 67.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:26:04,301 INFO L158 Benchmark]: RCFGBuilder took 606.95ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 49.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 20:26:04,301 INFO L158 Benchmark]: TraceAbstraction took 54989.47ms. Allocated memory was 107.0MB in the beginning and 13.2GB in the end (delta: 13.1GB). Free memory was 49.4MB in the beginning and 11.1GB in the end (delta: -11.0GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2022-11-18 20:26:04,302 INFO L158 Benchmark]: Witness Printer took 53.65ms. Allocated memory is still 13.2GB. Free memory was 11.1GB in the beginning and 11.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:26:04,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.30ms. Allocated memory is still 107.0MB. Free memory was 63.8MB in the beginning and 71.3MB in the end (delta: -7.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.61ms. Allocated memory is still 107.0MB. Free memory was 71.3MB in the beginning and 69.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.57ms. Allocated memory is still 107.0MB. Free memory was 69.0MB in the beginning and 67.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 606.95ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 49.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 54989.47ms. Allocated memory was 107.0MB in the beginning and 13.2GB in the end (delta: 13.1GB). Free memory was 49.4MB in the beginning and 11.1GB in the end (delta: -11.0GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 53.65ms. Allocated memory is still 13.2GB. Free memory was 11.1GB in the beginning and 11.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 237 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 54.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 51.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 811 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 811 mSDsluCounter, 1165 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 911 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1840 IncrementalHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 254 mSDtfsCounter, 1840 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3495occurred in iteration=9, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 789 NumberOfCodeBlocks, 789 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 779 ConstructedInterpolants, 0 QuantifiedInterpolants, 2394 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:26:04,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5086790c-13a3-489d-9a51-c516316cbe49/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE