./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array.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_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/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_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/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_c9720753-7550-4b6c-9215-ae9ae326498f/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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --- 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 19:53:39,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:53:39,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:53:39,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:53:39,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:53:39,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:53:39,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:53:39,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:53:39,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:53:39,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:53:39,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:53:39,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:53:39,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:53:39,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:53:39,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:53:39,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:53:39,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:53:39,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:53:39,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:53:39,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:53:39,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:53:39,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:53:39,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:53:39,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:53:39,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:53:39,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:53:39,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:53:39,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:53:39,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:53:39,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:53:39,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:53:39,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:53:39,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:53:39,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:53:39,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:53:39,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:53:39,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:53:39,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:53:39,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:53:39,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:53:39,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:53:39,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:53:39,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:53:39,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:53:39,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:53:39,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:53:39,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:53:39,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:53:39,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:53:39,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:53:39,705 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:53:39,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:53:39,706 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:53:39,706 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:53:39,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:53:39,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:53:39,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:53:39,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:53:39,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:53:39,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:53:39,707 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:53:39,707 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:53:39,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:53:39,708 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:53:39,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:53:39,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:53:39,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:53:39,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:53:39,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:39,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:53:39,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:53:39,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:53:39,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:53:39,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:53:39,710 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:53:39,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:53:39,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:53:39,710 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_c9720753-7550-4b6c-9215-ae9ae326498f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 [2022-11-18 19:53:39,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:53:39,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:53:40,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:53:40,002 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:53:40,003 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:53:40,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-18 19:53:40,072 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/data/aefcbf6c9/26988659c93340feaf166df355fbc239/FLAGd5195296d [2022-11-18 19:53:40,609 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:53:40,610 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-18 19:53:40,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/data/aefcbf6c9/26988659c93340feaf166df355fbc239/FLAGd5195296d [2022-11-18 19:53:40,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/data/aefcbf6c9/26988659c93340feaf166df355fbc239 [2022-11-18 19:53:40,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:53:40,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:53:40,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:40,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:53:40,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:53:40,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:40" (1/1) ... [2022-11-18 19:53:40,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cca6b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:40, skipping insertion in model container [2022-11-18 19:53:40,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:40" (1/1) ... [2022-11-18 19:53:40,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:53:40,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:53:41,282 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_c9720753-7550-4b6c-9215-ae9ae326498f/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-18 19:53:41,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:41,310 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:53:41,352 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_c9720753-7550-4b6c-9215-ae9ae326498f/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-18 19:53:41,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:41,373 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:53:41,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41 WrapperNode [2022-11-18 19:53:41,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:41,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:41,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:53:41,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:53:41,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,438 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-18 19:53:41,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:41,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:53:41,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:53:41,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:53:41,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,474 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:53:41,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:53:41,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:53:41,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:53:41,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (1/1) ... [2022-11-18 19:53:41,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:41,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:41,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:53:41,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:53:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:53:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:53:41,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:53:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:53:41,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:53:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:53:41,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:53:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:53:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:53:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:53:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:53:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:53:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:53:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:53:41,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:53:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:53:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:53:41,601 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 19:53:41,705 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:53:41,708 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:53:42,188 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:53:42,267 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:53:42,267 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:53:42,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:42 BoogieIcfgContainer [2022-11-18 19:53:42,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:53:42,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:53:42,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:53:42,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:53:42,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:53:40" (1/3) ... [2022-11-18 19:53:42,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1def8e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:42, skipping insertion in model container [2022-11-18 19:53:42,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:41" (2/3) ... [2022-11-18 19:53:42,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1def8e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:42, skipping insertion in model container [2022-11-18 19:53:42,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:42" (3/3) ... [2022-11-18 19:53:42,293 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2022-11-18 19:53:42,302 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:53:42,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:53:42,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:53:42,313 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:53:42,438 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:53:42,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 168 transitions, 360 flow [2022-11-18 19:53:42,605 INFO L130 PetriNetUnfolder]: 12/165 cut-off events. [2022-11-18 19:53:42,606 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:53:42,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 12/165 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. 0/145 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-11-18 19:53:42,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 168 transitions, 360 flow [2022-11-18 19:53:42,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 144 transitions, 303 flow [2022-11-18 19:53:42,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:53:42,635 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;@7c2dbbcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:53:42,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 19:53:42,653 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-18 19:53:42,654 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:53:42,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:42,655 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] [2022-11-18 19:53:42,656 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 19:53:42,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:42,662 INFO L85 PathProgramCache]: Analyzing trace with hash 47761478, now seen corresponding path program 1 times [2022-11-18 19:53:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:42,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188824863] [2022-11-18 19:53:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:42,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:43,094 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 19:53:43,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:43,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188824863] [2022-11-18 19:53:43,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188824863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:43,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:43,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:43,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604754758] [2022-11-18 19:53:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:43,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:43,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:43,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:43,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:43,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-11-18 19:53:43,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 144 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 19:53:43,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:43,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-11-18 19:53:43,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:43,479 INFO L130 PetriNetUnfolder]: 79/583 cut-off events. [2022-11-18 19:53:43,480 INFO L131 PetriNetUnfolder]: For 86/88 co-relation queries the response was YES. [2022-11-18 19:53:43,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 583 events. 79/583 cut-off events. For 86/88 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2904 event pairs, 30 based on Foata normal form. 72/535 useless extension candidates. Maximal degree in co-relation 285. Up to 69 conditions per place. [2022-11-18 19:53:43,493 INFO L137 encePairwiseOnDemand]: 155/168 looper letters, 32 selfloop transitions, 4 changer transitions 3/153 dead transitions. [2022-11-18 19:53:43,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 153 transitions, 408 flow [2022-11-18 19:53:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:43,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2022-11-18 19:53:43,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2022-11-18 19:53:43,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2022-11-18 19:53:43,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2022-11-18 19:53:43,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:43,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2022-11-18 19:53:43,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 19:53:43,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 19:53:43,549 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 19:53:43,551 INFO L175 Difference]: Start difference. First operand has 143 places, 144 transitions, 303 flow. Second operand 5 states and 740 transitions. [2022-11-18 19:53:43,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 153 transitions, 408 flow [2022-11-18 19:53:43,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 153 transitions, 390 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:43,560 INFO L231 Difference]: Finished difference. Result has 145 places, 137 transitions, 304 flow [2022-11-18 19:53:43,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2022-11-18 19:53:43,565 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 2 predicate places. [2022-11-18 19:53:43,566 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 304 flow [2022-11-18 19:53:43,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 19:53:43,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:43,567 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] [2022-11-18 19:53:43,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:53:43,568 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 19:53:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1591896996, now seen corresponding path program 1 times [2022-11-18 19:53:43,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:43,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660557219] [2022-11-18 19:53:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:43,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:43,823 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 19:53:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:43,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660557219] [2022-11-18 19:53:43,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660557219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:43,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476416663] [2022-11-18 19:53:43,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:43,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:43,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:43,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:43,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:53:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:43,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:43,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:44,045 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 19:53:44,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:44,110 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 19:53:44,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476416663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:44,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:44,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:53:44,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988675248] [2022-11-18 19:53:44,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:44,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:53:44,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:44,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:53:44,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:53:44,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-11-18 19:53:44,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 304 flow. Second operand has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 19:53:44,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:44,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-11-18 19:53:44,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:44,739 INFO L130 PetriNetUnfolder]: 196/1376 cut-off events. [2022-11-18 19:53:44,739 INFO L131 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2022-11-18 19:53:44,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1376 events. 196/1376 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9112 event pairs, 75 based on Foata normal form. 3/1094 useless extension candidates. Maximal degree in co-relation 1384. Up to 70 conditions per place. [2022-11-18 19:53:44,754 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 68 selfloop transitions, 18 changer transitions 0/200 dead transitions. [2022-11-18 19:53:44,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 200 transitions, 648 flow [2022-11-18 19:53:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:53:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:53:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2573 transitions. [2022-11-18 19:53:44,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8508597883597884 [2022-11-18 19:53:44,762 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2573 transitions. [2022-11-18 19:53:44,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2573 transitions. [2022-11-18 19:53:44,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:44,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2573 transitions. [2022-11-18 19:53:44,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 142.94444444444446) internal successors, (2573), 18 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states 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 19:53:44,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 19:53:44,780 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 19:53:44,780 INFO L175 Difference]: Start difference. First operand has 145 places, 137 transitions, 304 flow. Second operand 18 states and 2573 transitions. [2022-11-18 19:53:44,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 200 transitions, 648 flow [2022-11-18 19:53:44,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 200 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:44,789 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 408 flow [2022-11-18 19:53:44,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=408, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2022-11-18 19:53:44,791 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-11-18 19:53:44,791 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 408 flow [2022-11-18 19:53:44,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 19:53:44,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:44,793 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] [2022-11-18 19:53:44,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:45,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:45,010 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 19:53:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2104166939, now seen corresponding path program 1 times [2022-11-18 19:53:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:45,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421006523] [2022-11-18 19:53:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:45,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:45,224 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 19:53:45,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:45,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421006523] [2022-11-18 19:53:45,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421006523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:45,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703756822] [2022-11-18 19:53:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:45,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:45,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:45,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:45,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:53:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:45,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:45,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:45,383 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 19:53:45,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:45,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703756822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:45,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:45,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:53:45,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75989077] [2022-11-18 19:53:45,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:45,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:45,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:45,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:45,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:45,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-11-18 19:53:45,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 19:53:45,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:45,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-11-18 19:53:45,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:45,746 INFO L130 PetriNetUnfolder]: 196/1372 cut-off events. [2022-11-18 19:53:45,746 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-11-18 19:53:45,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1372 events. 196/1372 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9037 event pairs, 75 based on Foata normal form. 4/1091 useless extension candidates. Maximal degree in co-relation 1427. Up to 240 conditions per place. [2022-11-18 19:53:45,760 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 33 selfloop transitions, 11 changer transitions 0/158 dead transitions. [2022-11-18 19:53:45,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 503 flow [2022-11-18 19:53:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:53:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1002 transitions. [2022-11-18 19:53:45,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8520408163265306 [2022-11-18 19:53:45,763 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1002 transitions. [2022-11-18 19:53:45,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1002 transitions. [2022-11-18 19:53:45,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:45,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1002 transitions. [2022-11-18 19:53:45,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 19:53:45,770 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 19:53:45,770 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 408 flow. Second operand 7 states and 1002 transitions. [2022-11-18 19:53:45,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 503 flow [2022-11-18 19:53:45,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 158 transitions, 471 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:45,776 INFO L231 Difference]: Finished difference. Result has 158 places, 145 transitions, 371 flow [2022-11-18 19:53:45,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=158, PETRI_TRANSITIONS=145} [2022-11-18 19:53:45,777 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 15 predicate places. [2022-11-18 19:53:45,777 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 145 transitions, 371 flow [2022-11-18 19:53:45,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 19:53:45,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:45,779 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] [2022-11-18 19:53:45,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:45,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:45,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:53:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:45,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2119274129, now seen corresponding path program 1 times [2022-11-18 19:53:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:45,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997545461] [2022-11-18 19:53:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:45,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:46,101 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 19:53:46,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:46,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997545461] [2022-11-18 19:53:46,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997545461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:46,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:46,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:46,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212969064] [2022-11-18 19:53:46,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:46,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:46,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:46,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:46,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:46,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-18 19:53:46,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 145 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 19:53:46,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:46,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-18 19:53:46,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:46,792 INFO L130 PetriNetUnfolder]: 1121/3662 cut-off events. [2022-11-18 19:53:46,793 INFO L131 PetriNetUnfolder]: For 102/132 co-relation queries the response was YES. [2022-11-18 19:53:46,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 3662 events. 1121/3662 cut-off events. For 102/132 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 30664 event pairs, 450 based on Foata normal form. 0/2877 useless extension candidates. Maximal degree in co-relation 4799. Up to 1066 conditions per place. [2022-11-18 19:53:46,829 INFO L137 encePairwiseOnDemand]: 162/168 looper letters, 36 selfloop transitions, 4 changer transitions 0/167 dead transitions. [2022-11-18 19:53:46,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 167 transitions, 506 flow [2022-11-18 19:53:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2022-11-18 19:53:46,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-11-18 19:53:46,832 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2022-11-18 19:53:46,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2022-11-18 19:53:46,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:46,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2022-11-18 19:53:46,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 19:53:46,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 19:53:46,838 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 19:53:46,839 INFO L175 Difference]: Start difference. First operand has 158 places, 145 transitions, 371 flow. Second operand 5 states and 742 transitions. [2022-11-18 19:53:46,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 167 transitions, 506 flow [2022-11-18 19:53:46,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 167 transitions, 492 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:46,844 INFO L231 Difference]: Finished difference. Result has 160 places, 148 transitions, 387 flow [2022-11-18 19:53:46,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=160, PETRI_TRANSITIONS=148} [2022-11-18 19:53:46,845 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 17 predicate places. [2022-11-18 19:53:46,846 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 148 transitions, 387 flow [2022-11-18 19:53:46,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 19:53:46,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:46,847 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:46,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:53:46,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:53:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1191670954, now seen corresponding path program 1 times [2022-11-18 19:53:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:46,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539664295] [2022-11-18 19:53:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:46,937 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 19:53:46,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:46,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539664295] [2022-11-18 19:53:46,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539664295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:46,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:46,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:46,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006296234] [2022-11-18 19:53:46,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:46,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:46,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:46,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:46,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:46,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-18 19:53:46,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 148 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 19:53:46,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:46,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-18 19:53:46,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:48,037 INFO L130 PetriNetUnfolder]: 2156/5657 cut-off events. [2022-11-18 19:53:48,037 INFO L131 PetriNetUnfolder]: For 482/487 co-relation queries the response was YES. [2022-11-18 19:53:48,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9907 conditions, 5657 events. 2156/5657 cut-off events. For 482/487 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 52014 event pairs, 965 based on Foata normal form. 0/4772 useless extension candidates. Maximal degree in co-relation 7914. Up to 2031 conditions per place. [2022-11-18 19:53:48,099 INFO L137 encePairwiseOnDemand]: 162/168 looper letters, 35 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2022-11-18 19:53:48,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 169 transitions, 517 flow [2022-11-18 19:53:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2022-11-18 19:53:48,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8821428571428571 [2022-11-18 19:53:48,103 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2022-11-18 19:53:48,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2022-11-18 19:53:48,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:48,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2022-11-18 19:53:48,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 19:53:48,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 19:53:48,109 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 19:53:48,110 INFO L175 Difference]: Start difference. First operand has 160 places, 148 transitions, 387 flow. Second operand 5 states and 741 transitions. [2022-11-18 19:53:48,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 169 transitions, 517 flow [2022-11-18 19:53:48,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 169 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:48,118 INFO L231 Difference]: Finished difference. Result has 166 places, 151 transitions, 415 flow [2022-11-18 19:53:48,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=166, PETRI_TRANSITIONS=151} [2022-11-18 19:53:48,122 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 23 predicate places. [2022-11-18 19:53:48,123 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 151 transitions, 415 flow [2022-11-18 19:53:48,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 19:53:48,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:48,124 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] [2022-11-18 19:53:48,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:53:48,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:53:48,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:48,125 INFO L85 PathProgramCache]: Analyzing trace with hash -840761546, now seen corresponding path program 1 times [2022-11-18 19:53:48,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:48,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387715171] [2022-11-18 19:53:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:48,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:48,252 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 19:53:48,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:48,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387715171] [2022-11-18 19:53:48,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387715171] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:48,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800715047] [2022-11-18 19:53:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:48,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:48,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:48,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:48,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:53:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:48,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:53:48,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:48,516 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 19:53:48,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:48,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800715047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:48,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:48,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-18 19:53:48,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478462227] [2022-11-18 19:53:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:48,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:53:48,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:48,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:53:48,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:53:48,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 168 [2022-11-18 19:53:48,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 151 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 19:53:48,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:48,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 168 [2022-11-18 19:53:48,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:49,889 INFO L130 PetriNetUnfolder]: 1933/7428 cut-off events. [2022-11-18 19:53:49,889 INFO L131 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2022-11-18 19:53:49,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12945 conditions, 7428 events. 1933/7428 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 76095 event pairs, 1236 based on Foata normal form. 0/6126 useless extension candidates. Maximal degree in co-relation 12248. Up to 2609 conditions per place. [2022-11-18 19:53:49,968 INFO L137 encePairwiseOnDemand]: 159/168 looper letters, 53 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2022-11-18 19:53:49,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 172 transitions, 590 flow [2022-11-18 19:53:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:53:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:53:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1078 transitions. [2022-11-18 19:53:49,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8020833333333334 [2022-11-18 19:53:49,972 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1078 transitions. [2022-11-18 19:53:49,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1078 transitions. [2022-11-18 19:53:49,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:49,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1078 transitions. [2022-11-18 19:53:49,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.75) internal successors, (1078), 8 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states 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 19:53:49,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 19:53:49,979 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 19:53:49,979 INFO L175 Difference]: Start difference. First operand has 166 places, 151 transitions, 415 flow. Second operand 8 states and 1078 transitions. [2022-11-18 19:53:49,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 172 transitions, 590 flow [2022-11-18 19:53:50,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 172 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:50,006 INFO L231 Difference]: Finished difference. Result has 175 places, 153 transitions, 447 flow [2022-11-18 19:53:50,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=447, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2022-11-18 19:53:50,008 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 32 predicate places. [2022-11-18 19:53:50,008 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 447 flow [2022-11-18 19:53:50,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 19:53:50,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:50,009 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] [2022-11-18 19:53:50,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:50,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:50,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:53:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -797744630, now seen corresponding path program 1 times [2022-11-18 19:53:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:50,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548093104] [2022-11-18 19:53:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:50,487 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 19:53:50,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:50,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548093104] [2022-11-18 19:53:50,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548093104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:50,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:50,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:53:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633401615] [2022-11-18 19:53:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:50,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:53:50,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:53:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:50,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 168 [2022-11-18 19:53:50,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 447 flow. Second operand has 8 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 19:53:50,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:50,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 168 [2022-11-18 19:53:50,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:51,761 INFO L130 PetriNetUnfolder]: 2394/5549 cut-off events. [2022-11-18 19:53:51,762 INFO L131 PetriNetUnfolder]: For 971/1004 co-relation queries the response was YES. [2022-11-18 19:53:51,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10742 conditions, 5549 events. 2394/5549 cut-off events. For 971/1004 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 48689 event pairs, 1914 based on Foata normal form. 33/4660 useless extension candidates. Maximal degree in co-relation 9905. Up to 3377 conditions per place. [2022-11-18 19:53:51,826 INFO L137 encePairwiseOnDemand]: 155/168 looper letters, 70 selfloop transitions, 12 changer transitions 0/191 dead transitions. [2022-11-18 19:53:51,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 191 transitions, 703 flow [2022-11-18 19:53:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:53:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:53:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1430 transitions. [2022-11-18 19:53:51,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2022-11-18 19:53:51,831 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1430 transitions. [2022-11-18 19:53:51,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1430 transitions. [2022-11-18 19:53:51,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:51,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1430 transitions. [2022-11-18 19:53:51,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states 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 19:53:51,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 168.0) internal successors, (2016), 12 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states 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 19:53:51,841 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 168.0) internal successors, (2016), 12 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states 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 19:53:51,842 INFO L175 Difference]: Start difference. First operand has 175 places, 153 transitions, 447 flow. Second operand 11 states and 1430 transitions. [2022-11-18 19:53:51,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 191 transitions, 703 flow [2022-11-18 19:53:51,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 191 transitions, 693 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:53:51,851 INFO L231 Difference]: Finished difference. Result has 186 places, 158 transitions, 496 flow [2022-11-18 19:53:51,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=496, PETRI_PLACES=186, PETRI_TRANSITIONS=158} [2022-11-18 19:53:51,852 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 43 predicate places. [2022-11-18 19:53:51,853 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 158 transitions, 496 flow [2022-11-18 19:53:51,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 19:53:51,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:51,854 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 19:53:51,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:53:51,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:53:51,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1039720754, now seen corresponding path program 1 times [2022-11-18 19:53:51,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:51,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629763155] [2022-11-18 19:53:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:51,995 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 19:53:51,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:51,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629763155] [2022-11-18 19:53:51,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629763155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:51,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:51,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:53:51,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071351315] [2022-11-18 19:53:51,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:51,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:51,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:51,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 168 [2022-11-18 19:53:52,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 158 transitions, 496 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 19:53:52,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:52,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 168 [2022-11-18 19:53:52,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:53,342 INFO L130 PetriNetUnfolder]: 2892/6713 cut-off events. [2022-11-18 19:53:53,342 INFO L131 PetriNetUnfolder]: For 1134/1138 co-relation queries the response was YES. [2022-11-18 19:53:53,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13357 conditions, 6713 events. 2892/6713 cut-off events. For 1134/1138 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 60967 event pairs, 487 based on Foata normal form. 172/5941 useless extension candidates. Maximal degree in co-relation 12697. Up to 2168 conditions per place. [2022-11-18 19:53:53,424 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 33 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2022-11-18 19:53:53,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 168 transitions, 597 flow [2022-11-18 19:53:53,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:53:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:53:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 830 transitions. [2022-11-18 19:53:53,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8234126984126984 [2022-11-18 19:53:53,427 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 830 transitions. [2022-11-18 19:53:53,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 830 transitions. [2022-11-18 19:53:53,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:53,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 830 transitions. [2022-11-18 19:53:53,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states 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 19:53:53,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states 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 19:53:53,433 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states 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 19:53:53,435 INFO L175 Difference]: Start difference. First operand has 186 places, 158 transitions, 496 flow. Second operand 6 states and 830 transitions. [2022-11-18 19:53:53,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 168 transitions, 597 flow [2022-11-18 19:53:53,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 168 transitions, 581 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:53:53,463 INFO L231 Difference]: Finished difference. Result has 183 places, 156 transitions, 487 flow [2022-11-18 19:53:53,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=183, PETRI_TRANSITIONS=156} [2022-11-18 19:53:53,466 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 40 predicate places. [2022-11-18 19:53:53,467 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 156 transitions, 487 flow [2022-11-18 19:53:53,467 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 19:53:53,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:53,468 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] [2022-11-18 19:53:53,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:53:53,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:53:53,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:53,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1810045335, now seen corresponding path program 1 times [2022-11-18 19:53:53,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:53,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478523232] [2022-11-18 19:53:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:53,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:53,715 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 19:53:53,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:53,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478523232] [2022-11-18 19:53:53,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478523232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:53,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539718519] [2022-11-18 19:53:53,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:53,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:53,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:53,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:53,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:53:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:53,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:53,881 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 19:53:53,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:53,927 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 19:53:53,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539718519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:53,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:53,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:53:53,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901215513] [2022-11-18 19:53:53,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:53,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:53:53,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:53:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:53:53,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-18 19:53:53,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 156 transitions, 487 flow. Second operand has 12 states, 12 states have (on average 142.75) internal successors, (1713), 12 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states 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 19:53:53,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:53,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-18 19:53:53,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:56,247 INFO L130 PetriNetUnfolder]: 4141/9230 cut-off events. [2022-11-18 19:53:56,248 INFO L131 PetriNetUnfolder]: For 1398/1402 co-relation queries the response was YES. [2022-11-18 19:53:56,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19508 conditions, 9230 events. 4141/9230 cut-off events. For 1398/1402 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 87025 event pairs, 572 based on Foata normal form. 171/8739 useless extension candidates. Maximal degree in co-relation 17872. Up to 1598 conditions per place. [2022-11-18 19:53:56,348 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 102 selfloop transitions, 18 changer transitions 0/255 dead transitions. [2022-11-18 19:53:56,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 255 transitions, 999 flow [2022-11-18 19:53:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:53:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:53:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2643 transitions. [2022-11-18 19:53:56,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740079365079365 [2022-11-18 19:53:56,354 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2643 transitions. [2022-11-18 19:53:56,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2643 transitions. [2022-11-18 19:53:56,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:56,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2643 transitions. [2022-11-18 19:53:56,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 146.83333333333334) internal successors, (2643), 18 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states 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 19:53:56,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 19:53:56,370 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 19:53:56,370 INFO L175 Difference]: Start difference. First operand has 183 places, 156 transitions, 487 flow. Second operand 18 states and 2643 transitions. [2022-11-18 19:53:56,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 255 transitions, 999 flow [2022-11-18 19:53:56,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 255 transitions, 983 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:56,393 INFO L231 Difference]: Finished difference. Result has 199 places, 168 transitions, 577 flow [2022-11-18 19:53:56,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=577, PETRI_PLACES=199, PETRI_TRANSITIONS=168} [2022-11-18 19:53:56,395 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 56 predicate places. [2022-11-18 19:53:56,396 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 168 transitions, 577 flow [2022-11-18 19:53:56,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 142.75) internal successors, (1713), 12 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states 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 19:53:56,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:56,397 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] [2022-11-18 19:53:56,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:56,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 19:53:56,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:53:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash -276830043, now seen corresponding path program 1 times [2022-11-18 19:53:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:56,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648100378] [2022-11-18 19:53:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:56,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:56,705 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 19:53:56,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:56,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648100378] [2022-11-18 19:53:56,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648100378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:56,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757996823] [2022-11-18 19:53:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:56,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:56,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:56,707 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:56,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:53:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:56,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:56,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:56,852 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 19:53:56,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:56,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757996823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:56,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:56,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:53:56,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522649319] [2022-11-18 19:53:56,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:56,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:56,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:56,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-18 19:53:56,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 168 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 19:53:56,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:56,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-18 19:53:56,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:58,398 INFO L130 PetriNetUnfolder]: 3672/8216 cut-off events. [2022-11-18 19:53:58,398 INFO L131 PetriNetUnfolder]: For 2827/2831 co-relation queries the response was YES. [2022-11-18 19:53:58,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18669 conditions, 8216 events. 3672/8216 cut-off events. For 2827/2831 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 77356 event pairs, 210 based on Foata normal form. 228/8004 useless extension candidates. Maximal degree in co-relation 17377. Up to 2432 conditions per place. [2022-11-18 19:53:58,464 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 44 selfloop transitions, 11 changer transitions 0/190 dead transitions. [2022-11-18 19:53:58,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 190 transitions, 730 flow [2022-11-18 19:53:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:53:58,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1027 transitions. [2022-11-18 19:53:58,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732993197278912 [2022-11-18 19:53:58,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1027 transitions. [2022-11-18 19:53:58,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1027 transitions. [2022-11-18 19:53:58,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:58,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1027 transitions. [2022-11-18 19:53:58,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states 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 19:53:58,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 19:53:58,475 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 19:53:58,475 INFO L175 Difference]: Start difference. First operand has 199 places, 168 transitions, 577 flow. Second operand 7 states and 1027 transitions. [2022-11-18 19:53:58,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 190 transitions, 730 flow [2022-11-18 19:53:58,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 190 transitions, 698 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:58,500 INFO L231 Difference]: Finished difference. Result has 195 places, 164 transitions, 540 flow [2022-11-18 19:53:58,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=195, PETRI_TRANSITIONS=164} [2022-11-18 19:53:58,501 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 52 predicate places. [2022-11-18 19:53:58,501 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 164 transitions, 540 flow [2022-11-18 19:53:58,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 19:53:58,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:58,502 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] [2022-11-18 19:53:58,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 19:53:58,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:53:58,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:53:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1610000404, now seen corresponding path program 1 times [2022-11-18 19:53:58,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:58,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868044120] [2022-11-18 19:53:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:58,829 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 19:53:58,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:58,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868044120] [2022-11-18 19:53:58,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868044120] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:58,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280028193] [2022-11-18 19:53:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:58,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:58,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:58,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:58,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:53:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:58,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:53:58,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:59,211 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 19:53:59,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:59,529 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 19:53:59,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280028193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:59,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:59,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-18 19:53:59,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243353988] [2022-11-18 19:53:59,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:59,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:53:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:59,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:53:59,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:53:59,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 168 [2022-11-18 19:53:59,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 164 transitions, 540 flow. Second operand has 23 states, 23 states have (on average 121.65217391304348) internal successors, (2798), 23 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states 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 19:53:59,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:59,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 168 [2022-11-18 19:53:59,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:02,930 INFO L130 PetriNetUnfolder]: 6818/14620 cut-off events. [2022-11-18 19:54:02,930 INFO L131 PetriNetUnfolder]: For 3867/3895 co-relation queries the response was YES. [2022-11-18 19:54:03,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31844 conditions, 14620 events. 6818/14620 cut-off events. For 3867/3895 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 136901 event pairs, 1440 based on Foata normal form. 136/13669 useless extension candidates. Maximal degree in co-relation 29805. Up to 2690 conditions per place. [2022-11-18 19:54:03,184 INFO L137 encePairwiseOnDemand]: 150/168 looper letters, 179 selfloop transitions, 33 changer transitions 0/319 dead transitions. [2022-11-18 19:54:03,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 319 transitions, 1412 flow [2022-11-18 19:54:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:54:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 19:54:03,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3511 transitions. [2022-11-18 19:54:03,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7463860544217688 [2022-11-18 19:54:03,193 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3511 transitions. [2022-11-18 19:54:03,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3511 transitions. [2022-11-18 19:54:03,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:03,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3511 transitions. [2022-11-18 19:54:03,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 125.39285714285714) internal successors, (3511), 28 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states 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 19:54:03,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 168.0) internal successors, (4872), 29 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 19:54:03,215 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 168.0) internal successors, (4872), 29 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 19:54:03,215 INFO L175 Difference]: Start difference. First operand has 195 places, 164 transitions, 540 flow. Second operand 28 states and 3511 transitions. [2022-11-18 19:54:03,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 319 transitions, 1412 flow [2022-11-18 19:54:03,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 319 transitions, 1398 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:54:03,255 INFO L231 Difference]: Finished difference. Result has 223 places, 179 transitions, 687 flow [2022-11-18 19:54:03,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=687, PETRI_PLACES=223, PETRI_TRANSITIONS=179} [2022-11-18 19:54:03,256 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 80 predicate places. [2022-11-18 19:54:03,256 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 179 transitions, 687 flow [2022-11-18 19:54:03,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 121.65217391304348) internal successors, (2798), 23 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states 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 19:54:03,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:03,258 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] [2022-11-18 19:54:03,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:03,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:54:03,464 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 19:54:03,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:03,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1437094970, now seen corresponding path program 2 times [2022-11-18 19:54:03,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:03,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197553299] [2022-11-18 19:54:03,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:03,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:03,673 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 19:54:03,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:03,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197553299] [2022-11-18 19:54:03,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197553299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:03,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162630217] [2022-11-18 19:54:03,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:03,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:03,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:03,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:03,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:54:03,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:54:03,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:03,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:54:03,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:03,935 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 19:54:03,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:04,082 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 19:54:04,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162630217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:04,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:04,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 19:54:04,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251069633] [2022-11-18 19:54:04,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:04,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:54:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:04,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:54:04,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:54:04,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 168 [2022-11-18 19:54:04,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 179 transitions, 687 flow. Second operand has 18 states, 18 states have (on average 126.61111111111111) internal successors, (2279), 18 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states 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 19:54:04,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:04,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 168 [2022-11-18 19:54:04,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:08,440 INFO L130 PetriNetUnfolder]: 4950/22267 cut-off events. [2022-11-18 19:54:08,440 INFO L131 PetriNetUnfolder]: For 9014/9386 co-relation queries the response was YES. [2022-11-18 19:54:08,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44645 conditions, 22267 events. 4950/22267 cut-off events. For 9014/9386 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 276536 event pairs, 3594 based on Foata normal form. 374/21070 useless extension candidates. Maximal degree in co-relation 42744. Up to 1785 conditions per place. [2022-11-18 19:54:08,675 INFO L137 encePairwiseOnDemand]: 157/168 looper letters, 136 selfloop transitions, 25 changer transitions 1/286 dead transitions. [2022-11-18 19:54:08,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 286 transitions, 1370 flow [2022-11-18 19:54:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:54:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 19:54:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3105 transitions. [2022-11-18 19:54:08,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7700892857142857 [2022-11-18 19:54:08,682 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3105 transitions. [2022-11-18 19:54:08,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3105 transitions. [2022-11-18 19:54:08,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:08,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3105 transitions. [2022-11-18 19:54:08,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 129.375) internal successors, (3105), 24 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states 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 19:54:08,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 168.0) internal successors, (4200), 25 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 19:54:08,700 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 168.0) internal successors, (4200), 25 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 19:54:08,700 INFO L175 Difference]: Start difference. First operand has 223 places, 179 transitions, 687 flow. Second operand 24 states and 3105 transitions. [2022-11-18 19:54:08,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 286 transitions, 1370 flow [2022-11-18 19:54:09,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 286 transitions, 1319 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-11-18 19:54:09,095 INFO L231 Difference]: Finished difference. Result has 230 places, 183 transitions, 711 flow [2022-11-18 19:54:09,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=711, PETRI_PLACES=230, PETRI_TRANSITIONS=183} [2022-11-18 19:54:09,096 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 87 predicate places. [2022-11-18 19:54:09,096 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 183 transitions, 711 flow [2022-11-18 19:54:09,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 126.61111111111111) internal successors, (2279), 18 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states 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 19:54:09,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:09,098 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] [2022-11-18 19:54:09,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 19:54:09,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:54:09,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:54:09,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1153657876, now seen corresponding path program 1 times [2022-11-18 19:54:09,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:09,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226948238] [2022-11-18 19:54:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:09,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:09,646 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 19:54:09,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:09,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226948238] [2022-11-18 19:54:09,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226948238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:09,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121406231] [2022-11-18 19:54:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:09,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:09,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:09,651 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:09,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:54:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:09,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:54:09,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:09,912 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 19:54:09,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:09,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121406231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:09,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:54:09,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-18 19:54:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300374702] [2022-11-18 19:54:09,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:09,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:54:09,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:09,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:54:09,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:54:09,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-11-18 19:54:09,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 183 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 19:54:09,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:09,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-11-18 19:54:09,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:12,913 INFO L130 PetriNetUnfolder]: 8581/18377 cut-off events. [2022-11-18 19:54:12,914 INFO L131 PetriNetUnfolder]: For 6820/7324 co-relation queries the response was YES. [2022-11-18 19:54:13,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41242 conditions, 18377 events. 8581/18377 cut-off events. For 6820/7324 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 186947 event pairs, 2811 based on Foata normal form. 1021/17980 useless extension candidates. Maximal degree in co-relation 39412. Up to 5291 conditions per place. [2022-11-18 19:54:13,304 INFO L137 encePairwiseOnDemand]: 160/168 looper letters, 52 selfloop transitions, 11 changer transitions 6/215 dead transitions. [2022-11-18 19:54:13,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 215 transitions, 967 flow [2022-11-18 19:54:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:13,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 961 transitions. [2022-11-18 19:54:13,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171768707482994 [2022-11-18 19:54:13,308 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 961 transitions. [2022-11-18 19:54:13,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 961 transitions. [2022-11-18 19:54:13,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:13,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 961 transitions. [2022-11-18 19:54:13,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.28571428571428) internal successors, (961), 7 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 19:54:13,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 19:54:13,313 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 19:54:13,313 INFO L175 Difference]: Start difference. First operand has 230 places, 183 transitions, 711 flow. Second operand 7 states and 961 transitions. [2022-11-18 19:54:13,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 215 transitions, 967 flow [2022-11-18 19:54:13,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 215 transitions, 903 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-18 19:54:13,460 INFO L231 Difference]: Finished difference. Result has 217 places, 179 transitions, 658 flow [2022-11-18 19:54:13,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=658, PETRI_PLACES=217, PETRI_TRANSITIONS=179} [2022-11-18 19:54:13,462 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 74 predicate places. [2022-11-18 19:54:13,462 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 179 transitions, 658 flow [2022-11-18 19:54:13,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 19:54:13,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:13,463 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] [2022-11-18 19:54:13,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:13,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:13,669 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:54:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash 684918698, now seen corresponding path program 1 times [2022-11-18 19:54:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:13,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948388047] [2022-11-18 19:54:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:13,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:13,780 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 19:54:13,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:13,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948388047] [2022-11-18 19:54:13,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948388047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:13,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131388608] [2022-11-18 19:54:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:13,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:13,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:13,784 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:13,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:54:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:13,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:54:13,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:13,929 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 19:54:13,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:13,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131388608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:13,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:54:13,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:54:13,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659630896] [2022-11-18 19:54:13,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:13,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:54:13,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:54:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:54:13,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-18 19:54:13,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 179 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 19:54:13,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:13,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-18 19:54:13,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:15,456 INFO L130 PetriNetUnfolder]: 4318/9621 cut-off events. [2022-11-18 19:54:15,456 INFO L131 PetriNetUnfolder]: For 2741/2741 co-relation queries the response was YES. [2022-11-18 19:54:15,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23079 conditions, 9621 events. 4318/9621 cut-off events. For 2741/2741 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 90814 event pairs, 70 based on Foata normal form. 190/9358 useless extension candidates. Maximal degree in co-relation 23028. Up to 2377 conditions per place. [2022-11-18 19:54:15,679 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 44 selfloop transitions, 13 changer transitions 0/202 dead transitions. [2022-11-18 19:54:15,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 202 transitions, 828 flow [2022-11-18 19:54:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:54:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1026 transitions. [2022-11-18 19:54:15,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8724489795918368 [2022-11-18 19:54:15,681 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1026 transitions. [2022-11-18 19:54:15,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1026 transitions. [2022-11-18 19:54:15,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:15,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1026 transitions. [2022-11-18 19:54:15,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 19:54:15,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 19:54:15,686 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 19:54:15,686 INFO L175 Difference]: Start difference. First operand has 217 places, 179 transitions, 658 flow. Second operand 7 states and 1026 transitions. [2022-11-18 19:54:15,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 202 transitions, 828 flow [2022-11-18 19:54:15,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 202 transitions, 804 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 19:54:15,725 INFO L231 Difference]: Finished difference. Result has 213 places, 177 transitions, 646 flow [2022-11-18 19:54:15,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=646, PETRI_PLACES=213, PETRI_TRANSITIONS=177} [2022-11-18 19:54:15,727 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 70 predicate places. [2022-11-18 19:54:15,727 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 177 transitions, 646 flow [2022-11-18 19:54:15,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 19:54:15,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:15,728 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] [2022-11-18 19:54:15,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:15,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:54:15,933 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:54:15,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1153031729, now seen corresponding path program 2 times [2022-11-18 19:54:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:15,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307741607] [2022-11-18 19:54:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:16,250 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 19:54:16,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:16,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307741607] [2022-11-18 19:54:16,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307741607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:16,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008555021] [2022-11-18 19:54:16,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:16,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:16,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:16,252 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:16,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:54:16,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:54:16,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:16,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:54:16,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:16,545 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 19:54:16,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:16,699 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 19:54:16,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008555021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:16,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:16,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-18 19:54:16,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937155302] [2022-11-18 19:54:16,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:16,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:54:16,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:16,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:54:16,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:54:16,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 168 [2022-11-18 19:54:16,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 177 transitions, 646 flow. Second operand has 19 states, 19 states have (on average 119.21052631578948) internal successors, (2265), 19 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states 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 19:54:16,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:16,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 168 [2022-11-18 19:54:16,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:21,399 INFO L130 PetriNetUnfolder]: 8343/21634 cut-off events. [2022-11-18 19:54:21,399 INFO L131 PetriNetUnfolder]: For 10469/10972 co-relation queries the response was YES. [2022-11-18 19:54:21,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48944 conditions, 21634 events. 8343/21634 cut-off events. For 10469/10972 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 233857 event pairs, 1562 based on Foata normal form. 254/20516 useless extension candidates. Maximal degree in co-relation 46024. Up to 3685 conditions per place. [2022-11-18 19:54:21,603 INFO L137 encePairwiseOnDemand]: 150/168 looper letters, 224 selfloop transitions, 48 changer transitions 0/373 dead transitions. [2022-11-18 19:54:21,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 373 transitions, 1795 flow [2022-11-18 19:54:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 19:54:21,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 19:54:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4858 transitions. [2022-11-18 19:54:21,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2022-11-18 19:54:21,612 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4858 transitions. [2022-11-18 19:54:21,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4858 transitions. [2022-11-18 19:54:21,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:21,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4858 transitions. [2022-11-18 19:54:21,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 121.45) internal successors, (4858), 40 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states 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 19:54:21,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 168.0) internal successors, (6888), 41 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states 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 19:54:21,633 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 168.0) internal successors, (6888), 41 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states 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 19:54:21,634 INFO L175 Difference]: Start difference. First operand has 213 places, 177 transitions, 646 flow. Second operand 40 states and 4858 transitions. [2022-11-18 19:54:21,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 373 transitions, 1795 flow [2022-11-18 19:54:21,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 373 transitions, 1755 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-18 19:54:21,798 INFO L231 Difference]: Finished difference. Result has 248 places, 188 transitions, 798 flow [2022-11-18 19:54:21,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=798, PETRI_PLACES=248, PETRI_TRANSITIONS=188} [2022-11-18 19:54:21,799 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 105 predicate places. [2022-11-18 19:54:21,800 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 188 transitions, 798 flow [2022-11-18 19:54:21,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 119.21052631578948) internal successors, (2265), 19 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states 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 19:54:21,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:21,801 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] [2022-11-18 19:54:21,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:22,006 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:54:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash -346541334, now seen corresponding path program 2 times [2022-11-18 19:54:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:22,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048158657] [2022-11-18 19:54:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,232 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 19:54:22,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:22,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048158657] [2022-11-18 19:54:22,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048158657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:22,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413290047] [2022-11-18 19:54:22,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:22,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:22,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:22,234 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:22,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:54:22,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:54:22,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:22,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:54:22,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:22,500 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 19:54:22,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:22,649 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 19:54:22,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413290047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:22,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:22,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-18 19:54:22,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117179007] [2022-11-18 19:54:22,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:22,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:54:22,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:54:22,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:54:22,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 168 [2022-11-18 19:54:22,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 188 transitions, 798 flow. Second operand has 16 states, 16 states have (on average 136.6875) internal successors, (2187), 16 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states 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 19:54:22,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:22,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 168 [2022-11-18 19:54:22,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:26,887 INFO L130 PetriNetUnfolder]: 11139/21985 cut-off events. [2022-11-18 19:54:26,887 INFO L131 PetriNetUnfolder]: For 7088/7094 co-relation queries the response was YES. [2022-11-18 19:54:27,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49559 conditions, 21985 events. 11139/21985 cut-off events. For 7088/7094 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 221675 event pairs, 528 based on Foata normal form. 284/20664 useless extension candidates. Maximal degree in co-relation 49357. Up to 3075 conditions per place. [2022-11-18 19:54:27,036 INFO L137 encePairwiseOnDemand]: 159/168 looper letters, 0 selfloop transitions, 0 changer transitions 307/307 dead transitions. [2022-11-18 19:54:27,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 307 transitions, 1412 flow [2022-11-18 19:54:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:54:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 19:54:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3082 transitions. [2022-11-18 19:54:27,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8338744588744589 [2022-11-18 19:54:27,040 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3082 transitions. [2022-11-18 19:54:27,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3082 transitions. [2022-11-18 19:54:27,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:27,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3082 transitions. [2022-11-18 19:54:27,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 140.0909090909091) internal successors, (3082), 22 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states 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 19:54:27,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 168.0) internal successors, (3864), 23 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states 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 19:54:27,049 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 168.0) internal successors, (3864), 23 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states 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 19:54:27,049 INFO L175 Difference]: Start difference. First operand has 248 places, 188 transitions, 798 flow. Second operand 22 states and 3082 transitions. [2022-11-18 19:54:27,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 307 transitions, 1412 flow [2022-11-18 19:54:27,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 307 transitions, 1341 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-11-18 19:54:27,137 INFO L231 Difference]: Finished difference. Result has 243 places, 0 transitions, 0 flow [2022-11-18 19:54:27,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=243, PETRI_TRANSITIONS=0} [2022-11-18 19:54:27,138 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 100 predicate places. [2022-11-18 19:54:27,138 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 0 transitions, 0 flow [2022-11-18 19:54:27,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 136.6875) internal successors, (2187), 16 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states 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 19:54:27,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-18 19:54:27,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 19:54:27,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 19:54:27,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 19:54:27,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 19:54:27,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 19:54:27,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 19:54:27,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 19:54:27,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-18 19:54:27,143 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-18 19:54:27,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-18 19:54:27,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 19:54:27,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 19:54:27,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 19:54:27,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 19:54:27,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 19:54:27,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 19:54:27,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:27,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:54:27,364 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:27,369 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:54:27,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:54:27,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:54:27 BasicIcfg [2022-11-18 19:54:27,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:54:27,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:54:27,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:54:27,375 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:54:27,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:42" (3/4) ... [2022-11-18 19:54:27,378 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:54:27,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 19:54:27,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 19:54:27,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 19:54:27,391 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-18 19:54:27,391 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 19:54:27,392 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 19:54:27,392 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 19:54:27,443 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:54:27,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:54:27,444 INFO L158 Benchmark]: Toolchain (without parser) took 46478.35ms. Allocated memory was 138.4MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 108.1MB in the beginning and 9.4GB in the end (delta: -9.3GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2022-11-18 19:54:27,445 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:54:27,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.98ms. Allocated memory is still 138.4MB. Free memory was 107.8MB in the beginning and 113.9MB in the end (delta: -6.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:54:27,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.51ms. Allocated memory is still 138.4MB. Free memory was 113.9MB in the beginning and 111.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:54:27,446 INFO L158 Benchmark]: Boogie Preprocessor took 54.81ms. Allocated memory is still 138.4MB. Free memory was 111.9MB in the beginning and 110.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:54:27,446 INFO L158 Benchmark]: RCFGBuilder took 775.98ms. Allocated memory is still 138.4MB. Free memory was 110.2MB in the beginning and 89.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 19:54:27,447 INFO L158 Benchmark]: TraceAbstraction took 45101.47ms. Allocated memory was 138.4MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 88.4MB in the beginning and 9.4GB in the end (delta: -9.3GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2022-11-18 19:54:27,447 INFO L158 Benchmark]: Witness Printer took 68.38ms. Allocated memory is still 11.3GB. Free memory was 9.4GB in the beginning and 9.4GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 19:54:27,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.98ms. Allocated memory is still 138.4MB. Free memory was 107.8MB in the beginning and 113.9MB in the end (delta: -6.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.51ms. Allocated memory is still 138.4MB. Free memory was 113.9MB in the beginning and 111.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.81ms. Allocated memory is still 138.4MB. Free memory was 111.9MB in the beginning and 110.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 775.98ms. Allocated memory is still 138.4MB. Free memory was 110.2MB in the beginning and 89.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 45101.47ms. Allocated memory was 138.4MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 88.4MB in the beginning and 9.4GB in the end (delta: -9.3GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 68.38ms. Allocated memory is still 11.3GB. Free memory was 9.4GB in the beginning and 9.4GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. 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, 199 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: 44.9s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 35.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3255 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3255 mSDsluCounter, 419 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 327 mSDsCounter, 91 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3075 IncrementalHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 91 mSolverCounterUnsat, 92 mSDtfsCounter, 3075 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1679 GetRequests, 1374 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=798occurred 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 2198 NumberOfCodeBlocks, 2102 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2683 ConstructedInterpolants, 0 QuantifiedInterpolants, 5517 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1975 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 19:54:27,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9720753-7550-4b6c-9215-ae9ae326498f/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