./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/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_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 --- 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 20:52:15,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:52:15,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:52:15,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:52:15,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:52:15,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:52:15,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:52:15,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:52:15,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:52:15,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:52:15,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:52:15,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:52:15,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:52:15,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:52:15,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:52:15,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:52:15,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:52:15,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:52:15,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:52:15,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:52:15,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:52:15,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:52:15,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:52:15,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:52:15,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:52:15,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:52:15,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:52:15,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:52:15,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:52:15,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:52:15,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:52:15,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:52:15,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:52:15,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:52:15,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:52:15,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:52:15,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:52:15,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:52:15,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:52:15,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:52:15,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:52:15,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:52:15,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:52:15,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:52:15,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:52:15,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:52:15,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:52:15,930 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:52:15,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:52:15,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:52:15,932 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:52:15,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:52:15,933 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:52:15,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:52:15,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:52:15,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:52:15,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:52:15,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:52:15,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:52:15,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:52:15,935 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:52:15,936 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:52:15,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:52:15,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:52:15,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:52:15,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:52:15,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:52:15,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:52:15,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:52:15,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:52:15,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:52:15,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:52:15,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:52:15,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:52:15,939 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:52:15,939 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:52:15,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:52:15,940 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_b42e9fb7-19c9-411e-adfb-751491ade37d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 [2022-11-18 20:52:16,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:52:16,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:52:16,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:52:16,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:52:16,290 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:52:16,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-18 20:52:16,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/data/4e5b1bb9a/e0e5793e4b5745f59227d0165f3a2f13/FLAG7fe60dbaa [2022-11-18 20:52:16,992 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:52:16,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-18 20:52:17,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/data/4e5b1bb9a/e0e5793e4b5745f59227d0165f3a2f13/FLAG7fe60dbaa [2022-11-18 20:52:17,020 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/data/4e5b1bb9a/e0e5793e4b5745f59227d0165f3a2f13 [2022-11-18 20:52:17,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:52:17,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:52:17,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:52:17,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:52:17,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:52:17,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45617553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17, skipping insertion in model container [2022-11-18 20:52:17,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:52:17,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:52:17,297 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_b42e9fb7-19c9-411e-adfb-751491ade37d/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-18 20:52:17,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:52:17,313 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:52:17,340 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_b42e9fb7-19c9-411e-adfb-751491ade37d/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-18 20:52:17,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:52:17,361 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:52:17,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17 WrapperNode [2022-11-18 20:52:17,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:52:17,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:52:17,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:52:17,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:52:17,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,438 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-11-18 20:52:17,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:52:17,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:52:17,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:52:17,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:52:17,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,498 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:52:17,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:52:17,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:52:17,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:52:17,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (1/1) ... [2022-11-18 20:52:17,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:52:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:17,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:52:17,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:52:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:52:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:52:17,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:52:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:52:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:52:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:52:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:52:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:52:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:52:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:52:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:52:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:52:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:52:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:52:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:52:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:52:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:52:17,633 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 20:52:17,782 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:52:17,784 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:52:18,235 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:52:18,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:52:18,337 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:52:18,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:52:18 BoogieIcfgContainer [2022-11-18 20:52:18,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:52:18,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:52:18,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:52:18,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:52:18,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:52:17" (1/3) ... [2022-11-18 20:52:18,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424f31fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:52:18, skipping insertion in model container [2022-11-18 20:52:18,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:52:17" (2/3) ... [2022-11-18 20:52:18,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424f31fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:52:18, skipping insertion in model container [2022-11-18 20:52:18,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:52:18" (3/3) ... [2022-11-18 20:52:18,355 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2022-11-18 20:52:18,364 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:52:18,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:52:18,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:52:18,376 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:52:18,466 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:52:18,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 362 flow [2022-11-18 20:52:18,590 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2022-11-18 20:52:18,591 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:52:18,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 12/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-11-18 20:52:18,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 169 transitions, 362 flow [2022-11-18 20:52:18,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 145 transitions, 305 flow [2022-11-18 20:52:18,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:52:18,622 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;@1bfa93e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:52:18,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:52:18,642 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-18 20:52:18,642 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:52:18,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:18,643 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] [2022-11-18 20:52:18,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1292207454, now seen corresponding path program 1 times [2022-11-18 20:52:18,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:18,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594569575] [2022-11-18 20:52:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:18,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,175 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 20:52:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:19,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594569575] [2022-11-18 20:52:19,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594569575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:19,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:19,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:52:19,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079850485] [2022-11-18 20:52:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:19,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:52:19,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:19,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:52:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:52:19,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-11-18 20:52:19,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 145 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 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 20:52:19,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:19,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-11-18 20:52:19,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:19,504 INFO L130 PetriNetUnfolder]: 79/584 cut-off events. [2022-11-18 20:52:19,505 INFO L131 PetriNetUnfolder]: For 86/88 co-relation queries the response was YES. [2022-11-18 20:52:19,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 584 events. 79/584 cut-off events. For 86/88 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2905 event pairs, 30 based on Foata normal form. 72/536 useless extension candidates. Maximal degree in co-relation 286. Up to 69 conditions per place. [2022-11-18 20:52:19,514 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 32 selfloop transitions, 4 changer transitions 3/154 dead transitions. [2022-11-18 20:52:19,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 154 transitions, 410 flow [2022-11-18 20:52:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:52:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:52:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 745 transitions. [2022-11-18 20:52:19,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8816568047337278 [2022-11-18 20:52:19,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 745 transitions. [2022-11-18 20:52:19,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 745 transitions. [2022-11-18 20:52:19,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:19,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 745 transitions. [2022-11-18 20:52:19,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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 20:52:19,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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 20:52:19,568 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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 20:52:19,570 INFO L175 Difference]: Start difference. First operand has 144 places, 145 transitions, 305 flow. Second operand 5 states and 745 transitions. [2022-11-18 20:52:19,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 154 transitions, 410 flow [2022-11-18 20:52:19,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 154 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:19,584 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 306 flow [2022-11-18 20:52:19,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2022-11-18 20:52:19,593 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 2 predicate places. [2022-11-18 20:52:19,593 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 306 flow [2022-11-18 20:52:19,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 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 20:52:19,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:19,596 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:19,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:52:19,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash 409741581, now seen corresponding path program 1 times [2022-11-18 20:52:19,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:19,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100004782] [2022-11-18 20:52:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:19,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:19,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100004782] [2022-11-18 20:52:19,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100004782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:19,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205819304] [2022-11-18 20:52:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:19,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:19,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:19,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:19,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:52:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:20,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:52:20,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:20,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:52:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:20,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205819304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:52:20,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:52:20,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:52:20,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330415171] [2022-11-18 20:52:20,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:52:20,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:52:20,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:52:20,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:52:20,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-11-18 20:52:20,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 306 flow. Second operand has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 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 20:52:20,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:20,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-11-18 20:52:20,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:21,051 INFO L130 PetriNetUnfolder]: 196/1377 cut-off events. [2022-11-18 20:52:21,052 INFO L131 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2022-11-18 20:52:21,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 1377 events. 196/1377 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9113 event pairs, 75 based on Foata normal form. 3/1095 useless extension candidates. Maximal degree in co-relation 1384. Up to 70 conditions per place. [2022-11-18 20:52:21,066 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 68 selfloop transitions, 18 changer transitions 0/201 dead transitions. [2022-11-18 20:52:21,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 201 transitions, 650 flow [2022-11-18 20:52:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:52:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:52:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2591 transitions. [2022-11-18 20:52:21,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8517422748191978 [2022-11-18 20:52:21,075 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2591 transitions. [2022-11-18 20:52:21,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2591 transitions. [2022-11-18 20:52:21,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:21,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2591 transitions. [2022-11-18 20:52:21,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 143.94444444444446) internal successors, (2591), 18 states have internal predecessors, (2591), 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 20:52:21,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 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 20:52:21,095 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 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 20:52:21,096 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 306 flow. Second operand 18 states and 2591 transitions. [2022-11-18 20:52:21,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 201 transitions, 650 flow [2022-11-18 20:52:21,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 201 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:52:21,102 INFO L231 Difference]: Finished difference. Result has 163 places, 150 transitions, 410 flow [2022-11-18 20:52:21,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=410, PETRI_PLACES=163, PETRI_TRANSITIONS=150} [2022-11-18 20:52:21,104 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 19 predicate places. [2022-11-18 20:52:21,104 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 150 transitions, 410 flow [2022-11-18 20:52:21,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 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 20:52:21,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:21,106 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:21,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:21,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:21,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:21,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:21,314 INFO L85 PathProgramCache]: Analyzing trace with hash -182912557, now seen corresponding path program 1 times [2022-11-18 20:52:21,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:21,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995969655] [2022-11-18 20:52:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:21,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:21,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:21,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995969655] [2022-11-18 20:52:21,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995969655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:21,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092015831] [2022-11-18 20:52:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:21,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:21,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:21,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:21,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:52:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:21,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:52:21,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:21,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:52:21,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092015831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:21,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:52:21,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:52:21,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477242461] [2022-11-18 20:52:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:21,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:52:21,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:21,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:52:21,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:52:21,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-11-18 20:52:21,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 150 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 141.33333333333334) internal successors, (848), 6 states have internal predecessors, (848), 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 20:52:21,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:21,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-11-18 20:52:21,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:22,126 INFO L130 PetriNetUnfolder]: 196/1373 cut-off events. [2022-11-18 20:52:22,126 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-11-18 20:52:22,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 1373 events. 196/1373 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9044 event pairs, 75 based on Foata normal form. 4/1092 useless extension candidates. Maximal degree in co-relation 1428. Up to 240 conditions per place. [2022-11-18 20:52:22,140 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 33 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2022-11-18 20:52:22,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 159 transitions, 505 flow [2022-11-18 20:52:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:52:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:52:22,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1009 transitions. [2022-11-18 20:52:22,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852916314454776 [2022-11-18 20:52:22,144 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1009 transitions. [2022-11-18 20:52:22,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1009 transitions. [2022-11-18 20:52:22,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:22,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1009 transitions. [2022-11-18 20:52:22,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 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 20:52:22,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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 20:52:22,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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 20:52:22,151 INFO L175 Difference]: Start difference. First operand has 163 places, 150 transitions, 410 flow. Second operand 7 states and 1009 transitions. [2022-11-18 20:52:22,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 159 transitions, 505 flow [2022-11-18 20:52:22,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 159 transitions, 473 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:22,158 INFO L231 Difference]: Finished difference. Result has 159 places, 146 transitions, 373 flow [2022-11-18 20:52:22,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=159, PETRI_TRANSITIONS=146} [2022-11-18 20:52:22,162 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 15 predicate places. [2022-11-18 20:52:22,162 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 146 transitions, 373 flow [2022-11-18 20:52:22,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.33333333333334) internal successors, (848), 6 states have internal predecessors, (848), 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 20:52:22,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:22,163 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] [2022-11-18 20:52:22,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:22,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:22,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash -942841033, now seen corresponding path program 1 times [2022-11-18 20:52:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:22,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929117214] [2022-11-18 20:52:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:22,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:22,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929117214] [2022-11-18 20:52:22,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929117214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:22,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:22,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:52:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988723934] [2022-11-18 20:52:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:52:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:52:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:52:22,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-18 20:52:22,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 146 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 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 20:52:22,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:22,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-18 20:52:22,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:23,554 INFO L130 PetriNetUnfolder]: 1201/4528 cut-off events. [2022-11-18 20:52:23,556 INFO L131 PetriNetUnfolder]: For 102/132 co-relation queries the response was YES. [2022-11-18 20:52:23,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 4528 events. 1201/4528 cut-off events. For 102/132 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 40986 event pairs, 515 based on Foata normal form. 5/3638 useless extension candidates. Maximal degree in co-relation 5504. Up to 1081 conditions per place. [2022-11-18 20:52:23,607 INFO L137 encePairwiseOnDemand]: 163/169 looper letters, 36 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-11-18 20:52:23,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 168 transitions, 508 flow [2022-11-18 20:52:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:52:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:52:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 747 transitions. [2022-11-18 20:52:23,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8840236686390532 [2022-11-18 20:52:23,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 747 transitions. [2022-11-18 20:52:23,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 747 transitions. [2022-11-18 20:52:23,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:23,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 747 transitions. [2022-11-18 20:52:23,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 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 20:52:23,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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 20:52:23,619 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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 20:52:23,619 INFO L175 Difference]: Start difference. First operand has 159 places, 146 transitions, 373 flow. Second operand 5 states and 747 transitions. [2022-11-18 20:52:23,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 168 transitions, 508 flow [2022-11-18 20:52:23,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 168 transitions, 494 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:23,629 INFO L231 Difference]: Finished difference. Result has 161 places, 149 transitions, 389 flow [2022-11-18 20:52:23,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=161, PETRI_TRANSITIONS=149} [2022-11-18 20:52:23,632 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 17 predicate places. [2022-11-18 20:52:23,632 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 149 transitions, 389 flow [2022-11-18 20:52:23,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 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 20:52:23,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:23,634 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 20:52:23,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:52:23,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1503184433, now seen corresponding path program 1 times [2022-11-18 20:52:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:23,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290558656] [2022-11-18 20:52:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:23,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:23,771 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 20:52:23,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:23,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290558656] [2022-11-18 20:52:23,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290558656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:23,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:23,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:52:23,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75925465] [2022-11-18 20:52:23,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:23,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:52:23,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:23,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:52:23,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:52:23,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-18 20:52:23,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 149 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 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 20:52:23,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:23,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-18 20:52:23,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:25,175 INFO L130 PetriNetUnfolder]: 2181/6393 cut-off events. [2022-11-18 20:52:25,176 INFO L131 PetriNetUnfolder]: For 482/487 co-relation queries the response was YES. [2022-11-18 20:52:25,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10643 conditions, 6393 events. 2181/6393 cut-off events. For 482/487 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 62157 event pairs, 1095 based on Foata normal form. 0/5318 useless extension candidates. Maximal degree in co-relation 8503. Up to 2031 conditions per place. [2022-11-18 20:52:25,260 INFO L137 encePairwiseOnDemand]: 163/169 looper letters, 35 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2022-11-18 20:52:25,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 170 transitions, 519 flow [2022-11-18 20:52:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:52:25,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:52:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2022-11-18 20:52:25,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8828402366863906 [2022-11-18 20:52:25,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2022-11-18 20:52:25,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2022-11-18 20:52:25,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:25,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2022-11-18 20:52:25,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 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 20:52:25,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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 20:52:25,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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 20:52:25,271 INFO L175 Difference]: Start difference. First operand has 161 places, 149 transitions, 389 flow. Second operand 5 states and 746 transitions. [2022-11-18 20:52:25,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 170 transitions, 519 flow [2022-11-18 20:52:25,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 170 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:52:25,279 INFO L231 Difference]: Finished difference. Result has 167 places, 152 transitions, 417 flow [2022-11-18 20:52:25,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=167, PETRI_TRANSITIONS=152} [2022-11-18 20:52:25,280 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 23 predicate places. [2022-11-18 20:52:25,281 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 152 transitions, 417 flow [2022-11-18 20:52:25,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 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 20:52:25,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:25,282 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:25,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:52:25,282 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:25,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1702804560, now seen corresponding path program 1 times [2022-11-18 20:52:25,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:25,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906759563] [2022-11-18 20:52:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:25,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:25,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906759563] [2022-11-18 20:52:25,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906759563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:25,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325033960] [2022-11-18 20:52:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:25,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:25,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:25,436 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:25,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:52:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:25,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:52:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:52:25,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:52:25,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325033960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:25,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:52:25,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-18 20:52:25,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82578831] [2022-11-18 20:52:25,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:25,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:52:25,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:25,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:52:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:52:25,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 169 [2022-11-18 20:52:25,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 152 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 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 20:52:25,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:25,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 169 [2022-11-18 20:52:25,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:27,409 INFO L130 PetriNetUnfolder]: 1933/7429 cut-off events. [2022-11-18 20:52:27,409 INFO L131 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2022-11-18 20:52:27,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12946 conditions, 7429 events. 1933/7429 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 76113 event pairs, 1236 based on Foata normal form. 0/6127 useless extension candidates. Maximal degree in co-relation 12248. Up to 2609 conditions per place. [2022-11-18 20:52:27,497 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 53 selfloop transitions, 8 changer transitions 0/173 dead transitions. [2022-11-18 20:52:27,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 592 flow [2022-11-18 20:52:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:52:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:52:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1086 transitions. [2022-11-18 20:52:27,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8032544378698225 [2022-11-18 20:52:27,503 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1086 transitions. [2022-11-18 20:52:27,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1086 transitions. [2022-11-18 20:52:27,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:27,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1086 transitions. [2022-11-18 20:52:27,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.75) internal successors, (1086), 8 states have internal predecessors, (1086), 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 20:52:27,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 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 20:52:27,513 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 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 20:52:27,514 INFO L175 Difference]: Start difference. First operand has 167 places, 152 transitions, 417 flow. Second operand 8 states and 1086 transitions. [2022-11-18 20:52:27,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 592 flow [2022-11-18 20:52:27,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:52:27,547 INFO L231 Difference]: Finished difference. Result has 176 places, 154 transitions, 449 flow [2022-11-18 20:52:27,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=176, PETRI_TRANSITIONS=154} [2022-11-18 20:52:27,551 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 32 predicate places. [2022-11-18 20:52:27,551 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 154 transitions, 449 flow [2022-11-18 20:52:27,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 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 20:52:27,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:27,553 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 20:52:27,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:27,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:27,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash 585312722, now seen corresponding path program 1 times [2022-11-18 20:52:27,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:27,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483950117] [2022-11-18 20:52:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:27,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:27,970 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 20:52:27,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:27,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483950117] [2022-11-18 20:52:27,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483950117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:27,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:27,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:52:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178525341] [2022-11-18 20:52:27,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:52:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:52:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:52:27,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 169 [2022-11-18 20:52:27,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 154 transitions, 449 flow. Second operand has 8 states, 8 states have (on average 126.375) internal successors, (1011), 8 states have internal predecessors, (1011), 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 20:52:27,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:27,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 169 [2022-11-18 20:52:27,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:29,732 INFO L130 PetriNetUnfolder]: 2394/5544 cut-off events. [2022-11-18 20:52:29,732 INFO L131 PetriNetUnfolder]: For 971/1004 co-relation queries the response was YES. [2022-11-18 20:52:29,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10737 conditions, 5544 events. 2394/5544 cut-off events. For 971/1004 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 48798 event pairs, 1912 based on Foata normal form. 33/4655 useless extension candidates. Maximal degree in co-relation 9905. Up to 3377 conditions per place. [2022-11-18 20:52:29,844 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 70 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2022-11-18 20:52:29,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 192 transitions, 705 flow [2022-11-18 20:52:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:52:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:52:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1441 transitions. [2022-11-18 20:52:29,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7751479289940828 [2022-11-18 20:52:29,849 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1441 transitions. [2022-11-18 20:52:29,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1441 transitions. [2022-11-18 20:52:29,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:29,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1441 transitions. [2022-11-18 20:52:29,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 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 20:52:29,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 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 20:52:29,859 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 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 20:52:29,862 INFO L175 Difference]: Start difference. First operand has 176 places, 154 transitions, 449 flow. Second operand 11 states and 1441 transitions. [2022-11-18 20:52:29,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 192 transitions, 705 flow [2022-11-18 20:52:29,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 192 transitions, 695 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:52:29,871 INFO L231 Difference]: Finished difference. Result has 187 places, 159 transitions, 498 flow [2022-11-18 20:52:29,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=498, PETRI_PLACES=187, PETRI_TRANSITIONS=159} [2022-11-18 20:52:29,872 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 43 predicate places. [2022-11-18 20:52:29,873 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 159 transitions, 498 flow [2022-11-18 20:52:29,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.375) internal successors, (1011), 8 states have internal predecessors, (1011), 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 20:52:29,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:29,873 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] [2022-11-18 20:52:29,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:52:29,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:29,875 INFO L85 PathProgramCache]: Analyzing trace with hash 964825708, now seen corresponding path program 1 times [2022-11-18 20:52:29,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:29,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700918388] [2022-11-18 20:52:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:29,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:30,036 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 20:52:30,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:30,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700918388] [2022-11-18 20:52:30,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700918388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:30,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:30,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:52:30,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830831781] [2022-11-18 20:52:30,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:30,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:52:30,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:52:30,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:52:30,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 169 [2022-11-18 20:52:30,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 159 transitions, 498 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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 20:52:30,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:30,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 169 [2022-11-18 20:52:30,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:31,423 INFO L130 PetriNetUnfolder]: 2892/6532 cut-off events. [2022-11-18 20:52:31,423 INFO L131 PetriNetUnfolder]: For 1034/1038 co-relation queries the response was YES. [2022-11-18 20:52:31,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13176 conditions, 6532 events. 2892/6532 cut-off events. For 1034/1038 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 58938 event pairs, 244 based on Foata normal form. 172/5777 useless extension candidates. Maximal degree in co-relation 12516. Up to 2168 conditions per place. [2022-11-18 20:52:31,482 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 33 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2022-11-18 20:52:31,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 169 transitions, 599 flow [2022-11-18 20:52:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:52:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:52:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 836 transitions. [2022-11-18 20:52:31,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8244575936883629 [2022-11-18 20:52:31,486 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 836 transitions. [2022-11-18 20:52:31,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 836 transitions. [2022-11-18 20:52:31,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:31,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 836 transitions. [2022-11-18 20:52:31,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.33333333333334) internal successors, (836), 6 states have internal predecessors, (836), 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 20:52:31,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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 20:52:31,495 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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 20:52:31,495 INFO L175 Difference]: Start difference. First operand has 187 places, 159 transitions, 498 flow. Second operand 6 states and 836 transitions. [2022-11-18 20:52:31,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 169 transitions, 599 flow [2022-11-18 20:52:31,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 169 transitions, 583 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:52:31,543 INFO L231 Difference]: Finished difference. Result has 184 places, 157 transitions, 489 flow [2022-11-18 20:52:31,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=184, PETRI_TRANSITIONS=157} [2022-11-18 20:52:31,547 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 40 predicate places. [2022-11-18 20:52:31,547 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 157 transitions, 489 flow [2022-11-18 20:52:31,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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 20:52:31,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:31,548 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:31,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:52:31,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:31,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash 548431428, now seen corresponding path program 1 times [2022-11-18 20:52:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:31,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223262145] [2022-11-18 20:52:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:31,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:31,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:31,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223262145] [2022-11-18 20:52:31,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223262145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:31,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170935148] [2022-11-18 20:52:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:31,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:31,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:31,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:31,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:52:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:31,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:52:31,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:31,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:52:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:31,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170935148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:52:31,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:52:31,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:52:31,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283644027] [2022-11-18 20:52:31,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:52:31,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:52:31,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:31,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:52:31,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:52:31,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-18 20:52:31,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 157 transitions, 489 flow. Second operand has 12 states, 12 states have (on average 143.75) internal successors, (1725), 12 states have internal predecessors, (1725), 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 20:52:31,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:31,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-18 20:52:31,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:34,257 INFO L130 PetriNetUnfolder]: 4162/9817 cut-off events. [2022-11-18 20:52:34,257 INFO L131 PetriNetUnfolder]: For 1525/1529 co-relation queries the response was YES. [2022-11-18 20:52:34,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20464 conditions, 9817 events. 4162/9817 cut-off events. For 1525/1529 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 95668 event pairs, 687 based on Foata normal form. 171/9312 useless extension candidates. Maximal degree in co-relation 18744. Up to 1598 conditions per place. [2022-11-18 20:52:34,376 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 102 selfloop transitions, 18 changer transitions 0/256 dead transitions. [2022-11-18 20:52:34,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 256 transitions, 1001 flow [2022-11-18 20:52:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:52:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:52:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2661 transitions. [2022-11-18 20:52:34,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8747534516765286 [2022-11-18 20:52:34,388 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2661 transitions. [2022-11-18 20:52:34,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2661 transitions. [2022-11-18 20:52:34,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:34,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2661 transitions. [2022-11-18 20:52:34,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 147.83333333333334) internal successors, (2661), 18 states have internal predecessors, (2661), 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 20:52:34,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 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 20:52:34,406 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 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 20:52:34,407 INFO L175 Difference]: Start difference. First operand has 184 places, 157 transitions, 489 flow. Second operand 18 states and 2661 transitions. [2022-11-18 20:52:34,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 256 transitions, 1001 flow [2022-11-18 20:52:34,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 256 transitions, 985 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:34,452 INFO L231 Difference]: Finished difference. Result has 200 places, 169 transitions, 579 flow [2022-11-18 20:52:34,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=579, PETRI_PLACES=200, PETRI_TRANSITIONS=169} [2022-11-18 20:52:34,453 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 56 predicate places. [2022-11-18 20:52:34,454 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 169 transitions, 579 flow [2022-11-18 20:52:34,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.75) internal successors, (1725), 12 states have internal predecessors, (1725), 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 20:52:34,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:34,455 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:34,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:34,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:34,663 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:34,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:34,664 INFO L85 PathProgramCache]: Analyzing trace with hash -178494420, now seen corresponding path program 1 times [2022-11-18 20:52:34,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:34,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869876956] [2022-11-18 20:52:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:34,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:34,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:34,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869876956] [2022-11-18 20:52:34,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869876956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:34,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809588213] [2022-11-18 20:52:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:34,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:34,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:34,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:34,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:52:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:34,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:52:34,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:34,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:52:34,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809588213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:34,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:52:34,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:52:34,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313516463] [2022-11-18 20:52:34,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:34,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:52:34,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:34,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:52:34,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:52:34,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-18 20:52:34,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 169 transitions, 579 flow. Second operand has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 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 20:52:34,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:34,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-18 20:52:34,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:36,365 INFO L130 PetriNetUnfolder]: 3672/8217 cut-off events. [2022-11-18 20:52:36,365 INFO L131 PetriNetUnfolder]: For 2827/2831 co-relation queries the response was YES. [2022-11-18 20:52:36,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18670 conditions, 8217 events. 3672/8217 cut-off events. For 2827/2831 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 77479 event pairs, 210 based on Foata normal form. 228/8005 useless extension candidates. Maximal degree in co-relation 17378. Up to 2432 conditions per place. [2022-11-18 20:52:36,441 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 44 selfloop transitions, 11 changer transitions 0/191 dead transitions. [2022-11-18 20:52:36,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 191 transitions, 732 flow [2022-11-18 20:52:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:52:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:52:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1034 transitions. [2022-11-18 20:52:36,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740490278951818 [2022-11-18 20:52:36,446 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1034 transitions. [2022-11-18 20:52:36,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1034 transitions. [2022-11-18 20:52:36,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:36,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1034 transitions. [2022-11-18 20:52:36,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.71428571428572) internal successors, (1034), 7 states have internal predecessors, (1034), 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 20:52:36,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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 20:52:36,464 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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 20:52:36,473 INFO L175 Difference]: Start difference. First operand has 200 places, 169 transitions, 579 flow. Second operand 7 states and 1034 transitions. [2022-11-18 20:52:36,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 191 transitions, 732 flow [2022-11-18 20:52:36,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 191 transitions, 700 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:36,505 INFO L231 Difference]: Finished difference. Result has 196 places, 165 transitions, 542 flow [2022-11-18 20:52:36,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=196, PETRI_TRANSITIONS=165} [2022-11-18 20:52:36,508 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 52 predicate places. [2022-11-18 20:52:36,508 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 165 transitions, 542 flow [2022-11-18 20:52:36,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 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 20:52:36,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:36,510 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:36,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:36,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:52:36,716 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2115802593, now seen corresponding path program 1 times [2022-11-18 20:52:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:36,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342561726] [2022-11-18 20:52:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:36,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:52:36,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:36,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342561726] [2022-11-18 20:52:36,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342561726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:36,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163055205] [2022-11-18 20:52:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:36,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:36,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:36,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:36,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:52:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:52:36,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:37,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:52:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:37,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163055205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:52:37,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:52:37,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-18 20:52:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280408120] [2022-11-18 20:52:37,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:52:37,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:52:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:37,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:52:37,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:52:37,696 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 169 [2022-11-18 20:52:37,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 165 transitions, 542 flow. Second operand has 23 states, 23 states have (on average 122.65217391304348) internal successors, (2821), 23 states have internal predecessors, (2821), 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 20:52:37,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:37,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 169 [2022-11-18 20:52:37,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:41,833 INFO L130 PetriNetUnfolder]: 6807/14476 cut-off events. [2022-11-18 20:52:41,834 INFO L131 PetriNetUnfolder]: For 3806/3806 co-relation queries the response was YES. [2022-11-18 20:52:41,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31785 conditions, 14476 events. 6807/14476 cut-off events. For 3806/3806 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 135093 event pairs, 1466 based on Foata normal form. 124/13462 useless extension candidates. Maximal degree in co-relation 29246. Up to 2690 conditions per place. [2022-11-18 20:52:41,978 INFO L137 encePairwiseOnDemand]: 151/169 looper letters, 178 selfloop transitions, 33 changer transitions 1/320 dead transitions. [2022-11-18 20:52:41,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 320 transitions, 1414 flow [2022-11-18 20:52:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:52:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 20:52:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3539 transitions. [2022-11-18 20:52:41,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7478867286559594 [2022-11-18 20:52:41,989 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3539 transitions. [2022-11-18 20:52:41,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3539 transitions. [2022-11-18 20:52:41,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:41,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3539 transitions. [2022-11-18 20:52:42,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 126.39285714285714) internal successors, (3539), 28 states have internal predecessors, (3539), 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 20:52:42,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 169.0) internal successors, (4901), 29 states have internal predecessors, (4901), 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 20:52:42,013 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 169.0) internal successors, (4901), 29 states have internal predecessors, (4901), 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 20:52:42,013 INFO L175 Difference]: Start difference. First operand has 196 places, 165 transitions, 542 flow. Second operand 28 states and 3539 transitions. [2022-11-18 20:52:42,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 320 transitions, 1414 flow [2022-11-18 20:52:42,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 320 transitions, 1400 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:52:42,061 INFO L231 Difference]: Finished difference. Result has 224 places, 180 transitions, 689 flow [2022-11-18 20:52:42,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=689, PETRI_PLACES=224, PETRI_TRANSITIONS=180} [2022-11-18 20:52:42,063 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 80 predicate places. [2022-11-18 20:52:42,063 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 180 transitions, 689 flow [2022-11-18 20:52:42,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 122.65217391304348) internal successors, (2821), 23 states have internal predecessors, (2821), 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 20:52:42,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:42,065 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:52:42,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:42,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:42,271 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:42,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1911720162, now seen corresponding path program 2 times [2022-11-18 20:52:42,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:42,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236290825] [2022-11-18 20:52:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:42,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:42,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:42,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236290825] [2022-11-18 20:52:42,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236290825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:42,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206381660] [2022-11-18 20:52:42,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:52:42,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:42,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:42,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:52:42,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:52:42,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:52:42,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:52:42,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:52:42,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:52:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:52:43,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206381660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:52:43,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:52:43,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:52:43,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338360248] [2022-11-18 20:52:43,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:52:43,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:52:43,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:52:43,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:52:43,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 169 [2022-11-18 20:52:43,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 180 transitions, 689 flow. Second operand has 18 states, 18 states have (on average 127.61111111111111) internal successors, (2297), 18 states have internal predecessors, (2297), 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 20:52:43,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:43,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 169 [2022-11-18 20:52:43,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:47,990 INFO L130 PetriNetUnfolder]: 4950/22268 cut-off events. [2022-11-18 20:52:47,990 INFO L131 PetriNetUnfolder]: For 9000/9372 co-relation queries the response was YES. [2022-11-18 20:52:48,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44646 conditions, 22268 events. 4950/22268 cut-off events. For 9000/9372 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 276485 event pairs, 3594 based on Foata normal form. 374/21071 useless extension candidates. Maximal degree in co-relation 42744. Up to 1785 conditions per place. [2022-11-18 20:52:48,400 INFO L137 encePairwiseOnDemand]: 158/169 looper letters, 136 selfloop transitions, 25 changer transitions 1/287 dead transitions. [2022-11-18 20:52:48,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 287 transitions, 1372 flow [2022-11-18 20:52:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:52:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:52:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3129 transitions. [2022-11-18 20:52:48,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7714497041420119 [2022-11-18 20:52:48,407 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3129 transitions. [2022-11-18 20:52:48,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3129 transitions. [2022-11-18 20:52:48,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:48,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3129 transitions. [2022-11-18 20:52:48,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 130.375) internal successors, (3129), 24 states have internal predecessors, (3129), 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 20:52:48,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 169.0) internal successors, (4225), 25 states have internal predecessors, (4225), 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 20:52:48,423 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 169.0) internal successors, (4225), 25 states have internal predecessors, (4225), 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 20:52:48,424 INFO L175 Difference]: Start difference. First operand has 224 places, 180 transitions, 689 flow. Second operand 24 states and 3129 transitions. [2022-11-18 20:52:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 287 transitions, 1372 flow [2022-11-18 20:52:48,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 287 transitions, 1321 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-11-18 20:52:48,760 INFO L231 Difference]: Finished difference. Result has 231 places, 184 transitions, 713 flow [2022-11-18 20:52:48,760 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=713, PETRI_PLACES=231, PETRI_TRANSITIONS=184} [2022-11-18 20:52:48,761 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 87 predicate places. [2022-11-18 20:52:48,761 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 184 transitions, 713 flow [2022-11-18 20:52:48,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.61111111111111) internal successors, (2297), 18 states have internal predecessors, (2297), 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 20:52:48,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:48,763 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] [2022-11-18 20:52:48,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:48,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:48,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash 508735683, now seen corresponding path program 1 times [2022-11-18 20:52:48,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:48,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072043260] [2022-11-18 20:52:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:48,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:49,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:49,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072043260] [2022-11-18 20:52:49,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072043260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:49,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613985610] [2022-11-18 20:52:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:49,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:49,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:49,222 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:49,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:52:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:49,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:52:49,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:52:49,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:52:49,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613985610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:49,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:52:49,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-18 20:52:49,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244872891] [2022-11-18 20:52:49,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:49,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:52:49,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:49,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:52:49,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:52:49,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 169 [2022-11-18 20:52:49,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 184 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 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 20:52:49,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:49,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 169 [2022-11-18 20:52:49,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:53,484 INFO L130 PetriNetUnfolder]: 8581/18084 cut-off events. [2022-11-18 20:52:53,484 INFO L131 PetriNetUnfolder]: For 6714/7218 co-relation queries the response was YES. [2022-11-18 20:52:53,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40949 conditions, 18084 events. 8581/18084 cut-off events. For 6714/7218 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 183322 event pairs, 2721 based on Foata normal form. 1021/17687 useless extension candidates. Maximal degree in co-relation 39119. Up to 5291 conditions per place. [2022-11-18 20:52:53,648 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 52 selfloop transitions, 11 changer transitions 6/216 dead transitions. [2022-11-18 20:52:53,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 216 transitions, 969 flow [2022-11-18 20:52:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:52:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:52:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 968 transitions. [2022-11-18 20:52:53,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8182586644125106 [2022-11-18 20:52:53,651 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 968 transitions. [2022-11-18 20:52:53,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 968 transitions. [2022-11-18 20:52:53,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:53,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 968 transitions. [2022-11-18 20:52:53,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.28571428571428) internal successors, (968), 7 states have internal predecessors, (968), 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 20:52:53,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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 20:52:53,657 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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 20:52:53,658 INFO L175 Difference]: Start difference. First operand has 231 places, 184 transitions, 713 flow. Second operand 7 states and 968 transitions. [2022-11-18 20:52:53,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 216 transitions, 969 flow [2022-11-18 20:52:53,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 905 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-18 20:52:53,818 INFO L231 Difference]: Finished difference. Result has 218 places, 180 transitions, 660 flow [2022-11-18 20:52:53,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=218, PETRI_TRANSITIONS=180} [2022-11-18 20:52:53,819 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 74 predicate places. [2022-11-18 20:52:53,820 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 180 transitions, 660 flow [2022-11-18 20:52:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 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 20:52:53,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:53,821 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:53,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:54,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:52:54,027 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:54,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:54,027 INFO L85 PathProgramCache]: Analyzing trace with hash -786562222, now seen corresponding path program 1 times [2022-11-18 20:52:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:54,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580124203] [2022-11-18 20:52:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:54,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:52:54,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:54,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580124203] [2022-11-18 20:52:54,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580124203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:54,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883572608] [2022-11-18 20:52:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:54,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:54,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:54,173 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:54,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:52:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:54,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:52:54,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:52:54,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:52:54,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883572608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:54,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:52:54,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:52:54,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831908545] [2022-11-18 20:52:54,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:54,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:52:54,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:52:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:52:54,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-18 20:52:54,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 180 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 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 20:52:54,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:54,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-18 20:52:54,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:52:56,311 INFO L130 PetriNetUnfolder]: 4318/9622 cut-off events. [2022-11-18 20:52:56,311 INFO L131 PetriNetUnfolder]: For 2741/2741 co-relation queries the response was YES. [2022-11-18 20:52:56,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23080 conditions, 9622 events. 4318/9622 cut-off events. For 2741/2741 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 90781 event pairs, 70 based on Foata normal form. 190/9359 useless extension candidates. Maximal degree in co-relation 23029. Up to 2377 conditions per place. [2022-11-18 20:52:56,405 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 44 selfloop transitions, 13 changer transitions 0/203 dead transitions. [2022-11-18 20:52:56,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 203 transitions, 830 flow [2022-11-18 20:52:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:52:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:52:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1033 transitions. [2022-11-18 20:52:56,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732037193575655 [2022-11-18 20:52:56,409 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1033 transitions. [2022-11-18 20:52:56,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1033 transitions. [2022-11-18 20:52:56,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:52:56,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1033 transitions. [2022-11-18 20:52:56,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 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 20:52:56,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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 20:52:56,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 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 20:52:56,417 INFO L175 Difference]: Start difference. First operand has 218 places, 180 transitions, 660 flow. Second operand 7 states and 1033 transitions. [2022-11-18 20:52:56,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 203 transitions, 830 flow [2022-11-18 20:52:56,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 203 transitions, 806 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 20:52:56,476 INFO L231 Difference]: Finished difference. Result has 214 places, 178 transitions, 648 flow [2022-11-18 20:52:56,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=214, PETRI_TRANSITIONS=178} [2022-11-18 20:52:56,477 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 70 predicate places. [2022-11-18 20:52:56,477 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 178 transitions, 648 flow [2022-11-18 20:52:56,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 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 20:52:56,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:52:56,479 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:56,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:56,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:52:56,685 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:52:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash -87650249, now seen corresponding path program 2 times [2022-11-18 20:52:56,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:56,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823920683] [2022-11-18 20:52:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:56,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:57,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:57,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823920683] [2022-11-18 20:52:57,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823920683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:57,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316187829] [2022-11-18 20:52:57,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:52:57,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:57,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:57,111 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:57,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:52:57,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:52:57,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:52:57,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:52:57,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:52:57,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:52:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:52:57,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316187829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:52:57,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:52:57,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-18 20:52:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483422548] [2022-11-18 20:52:57,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:52:57,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:52:57,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:52:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:52:57,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 169 [2022-11-18 20:52:57,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 178 transitions, 648 flow. Second operand has 19 states, 19 states have (on average 120.21052631578948) internal successors, (2284), 19 states have internal predecessors, (2284), 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 20:52:57,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:52:57,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 169 [2022-11-18 20:52:57,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:03,082 INFO L130 PetriNetUnfolder]: 8310/21083 cut-off events. [2022-11-18 20:53:03,082 INFO L131 PetriNetUnfolder]: For 10128/10675 co-relation queries the response was YES. [2022-11-18 20:53:03,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47709 conditions, 21083 events. 8310/21083 cut-off events. For 10128/10675 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 224500 event pairs, 1350 based on Foata normal form. 262/20100 useless extension candidates. Maximal degree in co-relation 44933. Up to 3685 conditions per place. [2022-11-18 20:53:03,268 INFO L137 encePairwiseOnDemand]: 151/169 looper letters, 224 selfloop transitions, 48 changer transitions 0/374 dead transitions. [2022-11-18 20:53:03,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 374 transitions, 1797 flow [2022-11-18 20:53:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:53:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:53:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4898 transitions. [2022-11-18 20:53:03,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7245562130177515 [2022-11-18 20:53:03,277 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4898 transitions. [2022-11-18 20:53:03,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4898 transitions. [2022-11-18 20:53:03,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:03,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4898 transitions. [2022-11-18 20:53:03,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 122.45) internal successors, (4898), 40 states have internal predecessors, (4898), 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 20:53:03,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 169.0) internal successors, (6929), 41 states have internal predecessors, (6929), 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 20:53:03,306 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 169.0) internal successors, (6929), 41 states have internal predecessors, (6929), 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 20:53:03,306 INFO L175 Difference]: Start difference. First operand has 214 places, 178 transitions, 648 flow. Second operand 40 states and 4898 transitions. [2022-11-18 20:53:03,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 374 transitions, 1797 flow [2022-11-18 20:53:03,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 374 transitions, 1757 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-18 20:53:03,425 INFO L231 Difference]: Finished difference. Result has 249 places, 189 transitions, 800 flow [2022-11-18 20:53:03,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=800, PETRI_PLACES=249, PETRI_TRANSITIONS=189} [2022-11-18 20:53:03,425 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 105 predicate places. [2022-11-18 20:53:03,425 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 189 transitions, 800 flow [2022-11-18 20:53:03,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 120.21052631578948) internal successors, (2284), 19 states have internal predecessors, (2284), 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 20:53:03,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:03,427 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:53:03,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:03,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:53:03,632 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:53:03,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:03,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1042491535, now seen corresponding path program 2 times [2022-11-18 20:53:03,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:03,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147329137] [2022-11-18 20:53:03,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:03,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:03,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:03,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147329137] [2022-11-18 20:53:03,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147329137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:03,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290494880] [2022-11-18 20:53:03,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:53:03,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:03,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:03,851 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:03,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:53:03,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:53:03,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:53:03,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:53:03,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 20:53:04,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:53:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 20:53:04,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290494880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:53:04,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:53:04,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-18 20:53:04,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960463547] [2022-11-18 20:53:04,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:53:04,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:53:04,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:04,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:53:04,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:53:04,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 169 [2022-11-18 20:53:04,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 189 transitions, 800 flow. Second operand has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 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 20:53:04,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:04,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 169 [2022-11-18 20:53:04,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:09,390 INFO L130 PetriNetUnfolder]: 11292/23430 cut-off events. [2022-11-18 20:53:09,391 INFO L131 PetriNetUnfolder]: For 7297/7303 co-relation queries the response was YES. [2022-11-18 20:53:09,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51644 conditions, 23430 events. 11292/23430 cut-off events. For 7297/7303 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 242625 event pairs, 890 based on Foata normal form. 284/22342 useless extension candidates. Maximal degree in co-relation 51108. Up to 3075 conditions per place. [2022-11-18 20:53:09,591 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 0 selfloop transitions, 0 changer transitions 308/308 dead transitions. [2022-11-18 20:53:09,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 308 transitions, 1414 flow [2022-11-18 20:53:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:53:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:53:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3104 transitions. [2022-11-18 20:53:09,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348574502420656 [2022-11-18 20:53:09,594 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3104 transitions. [2022-11-18 20:53:09,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3104 transitions. [2022-11-18 20:53:09,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:09,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3104 transitions. [2022-11-18 20:53:09,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 141.0909090909091) internal successors, (3104), 22 states have internal predecessors, (3104), 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 20:53:09,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 169.0) internal successors, (3887), 23 states have internal predecessors, (3887), 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 20:53:09,609 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 169.0) internal successors, (3887), 23 states have internal predecessors, (3887), 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 20:53:09,610 INFO L175 Difference]: Start difference. First operand has 249 places, 189 transitions, 800 flow. Second operand 22 states and 3104 transitions. [2022-11-18 20:53:09,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 308 transitions, 1414 flow [2022-11-18 20:53:09,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 308 transitions, 1343 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-11-18 20:53:09,712 INFO L231 Difference]: Finished difference. Result has 244 places, 0 transitions, 0 flow [2022-11-18 20:53:09,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=244, PETRI_TRANSITIONS=0} [2022-11-18 20:53:09,713 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 100 predicate places. [2022-11-18 20:53:09,714 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 0 transitions, 0 flow [2022-11-18 20:53:09,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 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 20:53:09,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-18 20:53:09,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 20:53:09,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 20:53:09,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 20:53:09,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 20:53:09,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 20:53:09,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 20:53:09,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 20:53:09,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-18 20:53:09,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-18 20:53:09,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-18 20:53:09,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 20:53:09,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 20:53:09,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 20:53:09,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 20:53:09,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 20:53:09,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 20:53:09,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:09,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:53:09,929 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:09,936 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:53:09,936 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:53:09,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:53:09 BasicIcfg [2022-11-18 20:53:09,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:53:09,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:53:09,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:53:09,944 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:53:09,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:52:18" (3/4) ... [2022-11-18 20:53:09,949 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:53:09,956 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:53:09,957 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:53:09,957 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 20:53:09,965 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-18 20:53:09,965 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:53:09,966 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:53:09,966 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:53:10,011 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:53:10,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:53:10,012 INFO L158 Benchmark]: Toolchain (without parser) took 52983.52ms. Allocated memory was 136.3MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 102.2MB in the beginning and 9.3GB in the end (delta: -9.2GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2022-11-18 20:53:10,012 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory was 54.6MB in the beginning and 54.5MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:53:10,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.00ms. Allocated memory is still 136.3MB. Free memory was 101.9MB in the beginning and 110.8MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:53:10,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.27ms. Allocated memory is still 136.3MB. Free memory was 110.8MB in the beginning and 108.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:53:10,013 INFO L158 Benchmark]: Boogie Preprocessor took 71.75ms. Allocated memory is still 136.3MB. Free memory was 108.9MB in the beginning and 107.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:53:10,013 INFO L158 Benchmark]: RCFGBuilder took 832.38ms. Allocated memory is still 136.3MB. Free memory was 107.7MB in the beginning and 85.9MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 20:53:10,013 INFO L158 Benchmark]: TraceAbstraction took 51595.70ms. Allocated memory was 136.3MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 84.6MB in the beginning and 9.3GB in the end (delta: -9.3GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-11-18 20:53:10,014 INFO L158 Benchmark]: Witness Printer took 67.79ms. Allocated memory is still 11.3GB. Free memory was 9.3GB in the beginning and 9.3GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:53:10,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory was 54.6MB in the beginning and 54.5MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.00ms. Allocated memory is still 136.3MB. Free memory was 101.9MB in the beginning and 110.8MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.27ms. Allocated memory is still 136.3MB. Free memory was 110.8MB in the beginning and 108.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.75ms. Allocated memory is still 136.3MB. Free memory was 108.9MB in the beginning and 107.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 832.38ms. Allocated memory is still 136.3MB. Free memory was 107.7MB in the beginning and 85.9MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 51595.70ms. Allocated memory was 136.3MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 84.6MB in the beginning and 9.3GB in the end (delta: -9.3GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 67.79ms. Allocated memory is still 11.3GB. Free memory was 9.3GB in the beginning and 9.3GB 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: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 200 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 51.4s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 41.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3258 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3258 mSDsluCounter, 440 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 348 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3236 IncrementalHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 92 mSDtfsCounter, 3236 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1696 GetRequests, 1391 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=800occurred in iteration=15, InterpolantAutomatonStates: 218, 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: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 2225 NumberOfCodeBlocks, 2129 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2716 ConstructedInterpolants, 0 QuantifiedInterpolants, 5550 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1997 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 309/597 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:53:10,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42e9fb7-19c9-411e-adfb-751491ade37d/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