./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/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_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/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_5134f958-f971-44c7-9999-05497226df36/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 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:43:04,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:43:04,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:43:04,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:43:04,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:43:04,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:43:04,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:43:04,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:43:04,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:43:04,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:43:04,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:43:04,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:43:04,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:43:04,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:43:04,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:43:04,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:43:04,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:43:04,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:43:04,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:43:04,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:43:04,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:43:04,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:43:04,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:43:04,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:43:04,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:43:04,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:43:04,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:43:04,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:43:04,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:43:04,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:43:04,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:43:04,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:43:04,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:43:04,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:43:04,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:43:04,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:43:04,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:43:04,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:43:04,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:43:04,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:43:04,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:43:04,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:43:04,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:43:04,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:43:04,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:43:04,878 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:43:04,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:43:04,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:43:04,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:43:04,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:43:04,881 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:43:04,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:43:04,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:43:04,883 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:43:04,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:43:04,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:43:04,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:43:04,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:43:04,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:43:04,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:43:04,885 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:43:04,886 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:43:04,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:43:04,886 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:43:04,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:43:04,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:43:04,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:43:04,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:43:04,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:43:04,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:43:04,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:43:04,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:43:04,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:43:04,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:43:04,890 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:43:04,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:43:04,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:43:04,891 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_5134f958-f971-44c7-9999-05497226df36/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a [2022-11-18 18:43:05,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:43:05,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:43:05,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:43:05,270 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:43:05,271 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:43:05,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-11-18 18:43:05,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/data/522c90799/97cb6fd93d044ebca7ad6bdfdcad63fb/FLAGd4692a3b2 [2022-11-18 18:43:05,899 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:43:05,899 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-11-18 18:43:05,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/data/522c90799/97cb6fd93d044ebca7ad6bdfdcad63fb/FLAGd4692a3b2 [2022-11-18 18:43:06,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/data/522c90799/97cb6fd93d044ebca7ad6bdfdcad63fb [2022-11-18 18:43:06,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:43:06,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:43:06,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:43:06,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:43:06,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:43:06,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b266ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06, skipping insertion in model container [2022-11-18 18:43:06,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:43:06,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:43:06,541 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_5134f958-f971-44c7-9999-05497226df36/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-11-18 18:43:06,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:43:06,552 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:43:06,581 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_5134f958-f971-44c7-9999-05497226df36/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-11-18 18:43:06,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:43:06,598 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:43:06,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06 WrapperNode [2022-11-18 18:43:06,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:43:06,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:43:06,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:43:06,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:43:06,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,658 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 159 [2022-11-18 18:43:06,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:43:06,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:43:06,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:43:06,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:43:06,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,696 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:43:06,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:43:06,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:43:06,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:43:06,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (1/1) ... [2022-11-18 18:43:06,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:43:06,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:06,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:43:06,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:43:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:43:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:43:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:43:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:43:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:43:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:43:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:43:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:43:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:43:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:43:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:43:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:43:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:43:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:43:06,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:43:06,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:43:06,819 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:43:06,977 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:43:06,978 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:43:07,395 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:43:07,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:43:07,637 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:43:07,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:43:07 BoogieIcfgContainer [2022-11-18 18:43:07,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:43:07,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:43:07,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:43:07,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:43:07,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:43:06" (1/3) ... [2022-11-18 18:43:07,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6825cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:43:07, skipping insertion in model container [2022-11-18 18:43:07,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:43:06" (2/3) ... [2022-11-18 18:43:07,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6825cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:43:07, skipping insertion in model container [2022-11-18 18:43:07,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:43:07" (3/3) ... [2022-11-18 18:43:07,655 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2022-11-18 18:43:07,670 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:43:07,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:43:07,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 18:43:07,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:43:07,847 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:43:07,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 124 transitions, 272 flow [2022-11-18 18:43:08,045 INFO L130 PetriNetUnfolder]: 7/121 cut-off events. [2022-11-18 18:43:08,045 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:43:08,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 7/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 172 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2022-11-18 18:43:08,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 124 transitions, 272 flow [2022-11-18 18:43:08,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 105 transitions, 222 flow [2022-11-18 18:43:08,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:43:08,095 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;@2da82e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:43:08,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-18 18:43:08,127 INFO L130 PetriNetUnfolder]: 3/57 cut-off events. [2022-11-18 18:43:08,127 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:43:08,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:08,129 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] [2022-11-18 18:43:08,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:08,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:08,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1309411753, now seen corresponding path program 1 times [2022-11-18 18:43:08,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:08,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276133414] [2022-11-18 18:43:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:08,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:08,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276133414] [2022-11-18 18:43:08,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276133414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:08,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:08,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:43:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041393314] [2022-11-18 18:43:08,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:08,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:08,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:09,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:09,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:09,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-18 18:43:09,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:09,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:09,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-18 18:43:09,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:09,816 INFO L130 PetriNetUnfolder]: 1169/2237 cut-off events. [2022-11-18 18:43:09,817 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2022-11-18 18:43:09,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4090 conditions, 2237 events. 1169/2237 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14598 event pairs, 213 based on Foata normal form. 152/1334 useless extension candidates. Maximal degree in co-relation 3671. Up to 1008 conditions per place. [2022-11-18 18:43:09,855 INFO L137 encePairwiseOnDemand]: 100/124 looper letters, 32 selfloop transitions, 15 changer transitions 1/118 dead transitions. [2022-11-18 18:43:09,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 353 flow [2022-11-18 18:43:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:43:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:43:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2022-11-18 18:43:09,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7919354838709678 [2022-11-18 18:43:09,882 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2022-11-18 18:43:09,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2022-11-18 18:43:09,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:09,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2022-11-18 18:43:09,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:09,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:09,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:09,914 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 222 flow. Second operand 5 states and 491 transitions. [2022-11-18 18:43:09,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 353 flow [2022-11-18 18:43:09,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 118 transitions, 343 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:43:09,928 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 308 flow [2022-11-18 18:43:09,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2022-11-18 18:43:09,935 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 0 predicate places. [2022-11-18 18:43:09,935 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 308 flow [2022-11-18 18:43:09,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:09,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:09,937 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] [2022-11-18 18:43:09,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:43:09,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:09,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1309411752, now seen corresponding path program 1 times [2022-11-18 18:43:09,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:09,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846792886] [2022-11-18 18:43:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:09,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:10,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:10,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846792886] [2022-11-18 18:43:10,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846792886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:10,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:10,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:43:10,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090374069] [2022-11-18 18:43:10,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:10,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:43:10,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:10,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:43:10,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:43:10,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-11-18 18:43:10,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:10,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-11-18 18:43:10,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:10,543 INFO L130 PetriNetUnfolder]: 957/1754 cut-off events. [2022-11-18 18:43:10,543 INFO L131 PetriNetUnfolder]: For 752/752 co-relation queries the response was YES. [2022-11-18 18:43:10,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 1754 events. 957/1754 cut-off events. For 752/752 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10339 event pairs, 274 based on Foata normal form. 123/1246 useless extension candidates. Maximal degree in co-relation 4011. Up to 1245 conditions per place. [2022-11-18 18:43:10,567 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 32 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2022-11-18 18:43:10,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 358 flow [2022-11-18 18:43:10,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:43:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:43:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-18 18:43:10,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-11-18 18:43:10,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-18 18:43:10,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-18 18:43:10,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:10,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-18 18:43:10,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,576 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 308 flow. Second operand 4 states and 377 transitions. [2022-11-18 18:43:10,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 358 flow [2022-11-18 18:43:10,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:43:10,585 INFO L231 Difference]: Finished difference. Result has 106 places, 105 transitions, 290 flow [2022-11-18 18:43:10,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=106, PETRI_TRANSITIONS=105} [2022-11-18 18:43:10,586 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, -2 predicate places. [2022-11-18 18:43:10,586 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 105 transitions, 290 flow [2022-11-18 18:43:10,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:10,588 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] [2022-11-18 18:43:10,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:43:10,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:10,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:10,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1309411751, now seen corresponding path program 1 times [2022-11-18 18:43:10,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:10,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122979331] [2022-11-18 18:43:10,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:10,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:10,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:10,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122979331] [2022-11-18 18:43:10,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122979331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:10,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:10,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:43:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794915147] [2022-11-18 18:43:10,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:10,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:10,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:10,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-11-18 18:43:10,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:10,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-11-18 18:43:10,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:11,263 INFO L130 PetriNetUnfolder]: 1171/2142 cut-off events. [2022-11-18 18:43:11,263 INFO L131 PetriNetUnfolder]: For 658/658 co-relation queries the response was YES. [2022-11-18 18:43:11,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5113 conditions, 2142 events. 1171/2142 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13214 event pairs, 136 based on Foata normal form. 47/1470 useless extension candidates. Maximal degree in co-relation 5076. Up to 932 conditions per place. [2022-11-18 18:43:11,294 INFO L137 encePairwiseOnDemand]: 115/124 looper letters, 52 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2022-11-18 18:43:11,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 127 transitions, 499 flow [2022-11-18 18:43:11,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:43:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:43:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2022-11-18 18:43:11,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7548387096774194 [2022-11-18 18:43:11,297 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2022-11-18 18:43:11,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2022-11-18 18:43:11,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:11,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2022-11-18 18:43:11,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,303 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 290 flow. Second operand 5 states and 468 transitions. [2022-11-18 18:43:11,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 127 transitions, 499 flow [2022-11-18 18:43:11,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 127 transitions, 493 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:43:11,308 INFO L231 Difference]: Finished difference. Result has 109 places, 109 transitions, 340 flow [2022-11-18 18:43:11,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=109, PETRI_TRANSITIONS=109} [2022-11-18 18:43:11,310 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 1 predicate places. [2022-11-18 18:43:11,310 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 109 transitions, 340 flow [2022-11-18 18:43:11,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:11,311 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] [2022-11-18 18:43:11,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:43:11,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:11,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1309411750, now seen corresponding path program 1 times [2022-11-18 18:43:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:11,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304996026] [2022-11-18 18:43:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:11,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:11,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304996026] [2022-11-18 18:43:11,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304996026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:11,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:11,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:43:11,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375364351] [2022-11-18 18:43:11,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:11,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:43:11,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:11,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:43:11,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:43:11,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-11-18 18:43:11,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 109 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:11,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-11-18 18:43:11,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:11,660 INFO L130 PetriNetUnfolder]: 612/1183 cut-off events. [2022-11-18 18:43:11,660 INFO L131 PetriNetUnfolder]: For 736/736 co-relation queries the response was YES. [2022-11-18 18:43:11,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 1183 events. 612/1183 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6609 event pairs, 163 based on Foata normal form. 72/970 useless extension candidates. Maximal degree in co-relation 2997. Up to 835 conditions per place. [2022-11-18 18:43:11,676 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 31 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2022-11-18 18:43:11,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 376 flow [2022-11-18 18:43:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:43:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:43:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2022-11-18 18:43:11,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620967741935484 [2022-11-18 18:43:11,679 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2022-11-18 18:43:11,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2022-11-18 18:43:11,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:11,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2022-11-18 18:43:11,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,683 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,684 INFO L175 Difference]: Start difference. First operand has 109 places, 109 transitions, 340 flow. Second operand 4 states and 378 transitions. [2022-11-18 18:43:11,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 376 flow [2022-11-18 18:43:11,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 366 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:43:11,688 INFO L231 Difference]: Finished difference. Result has 107 places, 105 transitions, 304 flow [2022-11-18 18:43:11,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=107, PETRI_TRANSITIONS=105} [2022-11-18 18:43:11,690 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2022-11-18 18:43:11,690 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 105 transitions, 304 flow [2022-11-18 18:43:11,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:11,691 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] [2022-11-18 18:43:11,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:43:11,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash 165338200, now seen corresponding path program 1 times [2022-11-18 18:43:11,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:11,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851849925] [2022-11-18 18:43:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:11,837 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 18:43:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:11,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851849925] [2022-11-18 18:43:11,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851849925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:11,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648162162] [2022-11-18 18:43:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:11,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:11,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:11,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:43:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:11,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:43:11,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:12,208 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 18:43:12,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:12,358 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 18:43:12,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648162162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:12,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:12,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-18 18:43:12,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186963221] [2022-11-18 18:43:12,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:12,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:43:12,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:12,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:43:12,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:43:12,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-18 18:43:12,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 105 transitions, 304 flow. Second operand has 13 states, 13 states have (on average 87.6923076923077) internal successors, (1140), 13 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:12,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:12,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-18 18:43:12,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:13,629 INFO L130 PetriNetUnfolder]: 2355/4926 cut-off events. [2022-11-18 18:43:13,630 INFO L131 PetriNetUnfolder]: For 2283/2283 co-relation queries the response was YES. [2022-11-18 18:43:13,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11330 conditions, 4926 events. 2355/4926 cut-off events. For 2283/2283 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 37311 event pairs, 49 based on Foata normal form. 309/4175 useless extension candidates. Maximal degree in co-relation 11290. Up to 1265 conditions per place. [2022-11-18 18:43:13,741 INFO L137 encePairwiseOnDemand]: 104/124 looper letters, 57 selfloop transitions, 57 changer transitions 0/184 dead transitions. [2022-11-18 18:43:13,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 184 transitions, 863 flow [2022-11-18 18:43:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:43:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 974 transitions. [2022-11-18 18:43:13,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.785483870967742 [2022-11-18 18:43:13,747 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 974 transitions. [2022-11-18 18:43:13,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 974 transitions. [2022-11-18 18:43:13,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:13,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 974 transitions. [2022-11-18 18:43:13,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 97.4) internal successors, (974), 10 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:13,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:13,754 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:13,754 INFO L175 Difference]: Start difference. First operand has 107 places, 105 transitions, 304 flow. Second operand 10 states and 974 transitions. [2022-11-18 18:43:13,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 184 transitions, 863 flow [2022-11-18 18:43:13,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 184 transitions, 857 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:43:13,761 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 810 flow [2022-11-18 18:43:13,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=810, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2022-11-18 18:43:13,762 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 10 predicate places. [2022-11-18 18:43:13,762 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 810 flow [2022-11-18 18:43:13,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.6923076923077) internal successors, (1140), 13 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:13,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:13,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:13,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:13,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:13,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1880750772, now seen corresponding path program 1 times [2022-11-18 18:43:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:13,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375140271] [2022-11-18 18:43:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:14,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:14,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375140271] [2022-11-18 18:43:14,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375140271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:14,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:14,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773191763] [2022-11-18 18:43:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:14,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-18 18:43:14,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:14,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:14,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-18 18:43:14,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:16,241 INFO L130 PetriNetUnfolder]: 4360/9651 cut-off events. [2022-11-18 18:43:16,241 INFO L131 PetriNetUnfolder]: For 20883/20883 co-relation queries the response was YES. [2022-11-18 18:43:16,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30805 conditions, 9651 events. 4360/9651 cut-off events. For 20883/20883 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 85141 event pairs, 376 based on Foata normal form. 355/8025 useless extension candidates. Maximal degree in co-relation 20250. Up to 2785 conditions per place. [2022-11-18 18:43:16,370 INFO L137 encePairwiseOnDemand]: 104/124 looper letters, 102 selfloop transitions, 60 changer transitions 0/232 dead transitions. [2022-11-18 18:43:16,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 232 transitions, 1773 flow [2022-11-18 18:43:16,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2022-11-18 18:43:16,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7795698924731183 [2022-11-18 18:43:16,374 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2022-11-18 18:43:16,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2022-11-18 18:43:16,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:16,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2022-11-18 18:43:16,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:16,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:16,378 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:16,379 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 810 flow. Second operand 6 states and 580 transitions. [2022-11-18 18:43:16,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 232 transitions, 1773 flow [2022-11-18 18:43:16,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 232 transitions, 1697 flow, removed 35 selfloop flow, removed 3 redundant places. [2022-11-18 18:43:16,454 INFO L231 Difference]: Finished difference. Result has 122 places, 204 transitions, 1563 flow [2022-11-18 18:43:16,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1563, PETRI_PLACES=122, PETRI_TRANSITIONS=204} [2022-11-18 18:43:16,458 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 14 predicate places. [2022-11-18 18:43:16,458 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 204 transitions, 1563 flow [2022-11-18 18:43:16,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:16,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:16,459 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] [2022-11-18 18:43:16,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:43:16,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:16,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1880024459, now seen corresponding path program 1 times [2022-11-18 18:43:16,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:16,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529799988] [2022-11-18 18:43:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:16,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:16,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:16,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:16,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529799988] [2022-11-18 18:43:16,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529799988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:16,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:16,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:43:16,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626052864] [2022-11-18 18:43:16,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:16,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:43:16,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:16,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:43:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:43:16,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-11-18 18:43:16,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 204 transitions, 1563 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:16,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:16,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-11-18 18:43:16,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:17,693 INFO L130 PetriNetUnfolder]: 2158/5357 cut-off events. [2022-11-18 18:43:17,693 INFO L131 PetriNetUnfolder]: For 16900/16900 co-relation queries the response was YES. [2022-11-18 18:43:17,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19402 conditions, 5357 events. 2158/5357 cut-off events. For 16900/16900 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 45564 event pairs, 366 based on Foata normal form. 0/4359 useless extension candidates. Maximal degree in co-relation 18900. Up to 2848 conditions per place. [2022-11-18 18:43:17,790 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 119 selfloop transitions, 3 changer transitions 0/193 dead transitions. [2022-11-18 18:43:17,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 193 transitions, 1702 flow [2022-11-18 18:43:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:43:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:43:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-18 18:43:17,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-11-18 18:43:17,793 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-18 18:43:17,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-18 18:43:17,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:17,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-18 18:43:17,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:17,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:17,798 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:17,798 INFO L175 Difference]: Start difference. First operand has 122 places, 204 transitions, 1563 flow. Second operand 4 states and 377 transitions. [2022-11-18 18:43:17,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 193 transitions, 1702 flow [2022-11-18 18:43:17,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 193 transitions, 1644 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-11-18 18:43:17,879 INFO L231 Difference]: Finished difference. Result has 122 places, 193 transitions, 1406 flow [2022-11-18 18:43:17,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1406, PETRI_PLACES=122, PETRI_TRANSITIONS=193} [2022-11-18 18:43:17,881 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 14 predicate places. [2022-11-18 18:43:17,881 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 193 transitions, 1406 flow [2022-11-18 18:43:17,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:17,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:17,882 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] [2022-11-18 18:43:17,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:43:17,883 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:17,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1880024460, now seen corresponding path program 1 times [2022-11-18 18:43:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:17,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486144714] [2022-11-18 18:43:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:17,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:18,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:18,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486144714] [2022-11-18 18:43:18,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486144714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:18,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:18,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:43:18,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199525221] [2022-11-18 18:43:18,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:18,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:18,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:18,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:18,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-11-18 18:43:18,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 193 transitions, 1406 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:18,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:18,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-11-18 18:43:18,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:20,023 INFO L130 PetriNetUnfolder]: 3897/9708 cut-off events. [2022-11-18 18:43:20,023 INFO L131 PetriNetUnfolder]: For 30438/30438 co-relation queries the response was YES. [2022-11-18 18:43:20,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32085 conditions, 9708 events. 3897/9708 cut-off events. For 30438/30438 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 93179 event pairs, 346 based on Foata normal form. 74/8135 useless extension candidates. Maximal degree in co-relation 32027. Up to 3839 conditions per place. [2022-11-18 18:43:20,156 INFO L137 encePairwiseOnDemand]: 116/124 looper letters, 180 selfloop transitions, 18 changer transitions 0/266 dead transitions. [2022-11-18 18:43:20,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 266 transitions, 2564 flow [2022-11-18 18:43:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:43:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:43:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2022-11-18 18:43:20,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-11-18 18:43:20,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2022-11-18 18:43:20,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2022-11-18 18:43:20,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:20,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2022-11-18 18:43:20,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:20,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:20,163 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:20,163 INFO L175 Difference]: Start difference. First operand has 122 places, 193 transitions, 1406 flow. Second operand 5 states and 465 transitions. [2022-11-18 18:43:20,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 266 transitions, 2564 flow [2022-11-18 18:43:20,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 266 transitions, 2558 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:43:20,253 INFO L231 Difference]: Finished difference. Result has 124 places, 205 transitions, 1646 flow [2022-11-18 18:43:20,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1646, PETRI_PLACES=124, PETRI_TRANSITIONS=205} [2022-11-18 18:43:20,257 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 16 predicate places. [2022-11-18 18:43:20,258 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 205 transitions, 1646 flow [2022-11-18 18:43:20,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:20,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:20,260 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 18:43:20,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:43:20,260 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:20,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1673745339, now seen corresponding path program 1 times [2022-11-18 18:43:20,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:20,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426700090] [2022-11-18 18:43:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:20,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:20,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426700090] [2022-11-18 18:43:20,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426700090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:20,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706361362] [2022-11-18 18:43:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:20,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:20,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:20,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:20,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:43:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:20,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:43:20,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:21,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:21,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706361362] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:21,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:43:21,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2022-11-18 18:43:21,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731784714] [2022-11-18 18:43:21,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:21,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:21,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:21,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:43:21,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-11-18 18:43:21,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 205 transitions, 1646 flow. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:21,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:21,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-11-18 18:43:21,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:23,761 INFO L130 PetriNetUnfolder]: 5752/15272 cut-off events. [2022-11-18 18:43:23,762 INFO L131 PetriNetUnfolder]: For 60859/60859 co-relation queries the response was YES. [2022-11-18 18:43:23,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50908 conditions, 15272 events. 5752/15272 cut-off events. For 60859/60859 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 164693 event pairs, 287 based on Foata normal form. 380/14029 useless extension candidates. Maximal degree in co-relation 49930. Up to 4653 conditions per place. [2022-11-18 18:43:24,155 INFO L137 encePairwiseOnDemand]: 107/124 looper letters, 212 selfloop transitions, 41 changer transitions 0/321 dead transitions. [2022-11-18 18:43:24,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 321 transitions, 3435 flow [2022-11-18 18:43:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2022-11-18 18:43:24,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594086021505376 [2022-11-18 18:43:24,158 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 565 transitions. [2022-11-18 18:43:24,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 565 transitions. [2022-11-18 18:43:24,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:24,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 565 transitions. [2022-11-18 18:43:24,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:24,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:24,164 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:24,165 INFO L175 Difference]: Start difference. First operand has 124 places, 205 transitions, 1646 flow. Second operand 6 states and 565 transitions. [2022-11-18 18:43:24,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 321 transitions, 3435 flow [2022-11-18 18:43:24,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 321 transitions, 3399 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:43:24,298 INFO L231 Difference]: Finished difference. Result has 129 places, 237 transitions, 2271 flow [2022-11-18 18:43:24,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2271, PETRI_PLACES=129, PETRI_TRANSITIONS=237} [2022-11-18 18:43:24,299 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 21 predicate places. [2022-11-18 18:43:24,300 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 237 transitions, 2271 flow [2022-11-18 18:43:24,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:24,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:24,301 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] [2022-11-18 18:43:24,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:24,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:24,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2049618363, now seen corresponding path program 1 times [2022-11-18 18:43:24,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:24,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182321307] [2022-11-18 18:43:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:24,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:43:24,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:24,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182321307] [2022-11-18 18:43:24,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182321307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:24,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:24,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:43:24,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39042707] [2022-11-18 18:43:24,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:24,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:43:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:43:24,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:43:24,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-11-18 18:43:24,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 237 transitions, 2271 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:24,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:24,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-11-18 18:43:24,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:25,984 INFO L130 PetriNetUnfolder]: 3149/9162 cut-off events. [2022-11-18 18:43:25,984 INFO L131 PetriNetUnfolder]: For 48917/48917 co-relation queries the response was YES. [2022-11-18 18:43:26,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32835 conditions, 9162 events. 3149/9162 cut-off events. For 48917/48917 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 95624 event pairs, 588 based on Foata normal form. 207/8347 useless extension candidates. Maximal degree in co-relation 31821. Up to 4286 conditions per place. [2022-11-18 18:43:26,095 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 147 selfloop transitions, 3 changer transitions 0/221 dead transitions. [2022-11-18 18:43:26,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 221 transitions, 2331 flow [2022-11-18 18:43:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:43:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:43:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-11-18 18:43:26,099 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7580645161290323 [2022-11-18 18:43:26,099 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-11-18 18:43:26,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-11-18 18:43:26,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:26,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-11-18 18:43:26,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,103 INFO L175 Difference]: Start difference. First operand has 129 places, 237 transitions, 2271 flow. Second operand 4 states and 376 transitions. [2022-11-18 18:43:26,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 221 transitions, 2331 flow [2022-11-18 18:43:26,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 221 transitions, 2321 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 18:43:26,201 INFO L231 Difference]: Finished difference. Result has 129 places, 221 transitions, 2027 flow [2022-11-18 18:43:26,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2027, PETRI_PLACES=129, PETRI_TRANSITIONS=221} [2022-11-18 18:43:26,204 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 21 predicate places. [2022-11-18 18:43:26,204 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 221 transitions, 2027 flow [2022-11-18 18:43:26,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:26,205 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] [2022-11-18 18:43:26,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:43:26,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1564680634, now seen corresponding path program 1 times [2022-11-18 18:43:26,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:26,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851197789] [2022-11-18 18:43:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:26,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:26,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:26,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851197789] [2022-11-18 18:43:26,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851197789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:26,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:26,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:43:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741510273] [2022-11-18 18:43:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:26,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:26,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:26,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:26,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-11-18 18:43:26,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 221 transitions, 2027 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:26,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-11-18 18:43:26,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:28,097 INFO L130 PetriNetUnfolder]: 2775/8452 cut-off events. [2022-11-18 18:43:28,097 INFO L131 PetriNetUnfolder]: For 42686/42686 co-relation queries the response was YES. [2022-11-18 18:43:28,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29773 conditions, 8452 events. 2775/8452 cut-off events. For 42686/42686 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 89519 event pairs, 159 based on Foata normal form. 139/7633 useless extension candidates. Maximal degree in co-relation 29709. Up to 3622 conditions per place. [2022-11-18 18:43:28,194 INFO L137 encePairwiseOnDemand]: 113/124 looper letters, 177 selfloop transitions, 17 changer transitions 0/265 dead transitions. [2022-11-18 18:43:28,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 265 transitions, 2924 flow [2022-11-18 18:43:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:43:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:43:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2022-11-18 18:43:28,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7612903225806451 [2022-11-18 18:43:28,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2022-11-18 18:43:28,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2022-11-18 18:43:28,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:28,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2022-11-18 18:43:28,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:28,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:28,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:28,203 INFO L175 Difference]: Start difference. First operand has 129 places, 221 transitions, 2027 flow. Second operand 5 states and 472 transitions. [2022-11-18 18:43:28,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 265 transitions, 2924 flow [2022-11-18 18:43:28,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 265 transitions, 2918 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:43:28,308 INFO L231 Difference]: Finished difference. Result has 131 places, 228 transitions, 2207 flow [2022-11-18 18:43:28,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2207, PETRI_PLACES=131, PETRI_TRANSITIONS=228} [2022-11-18 18:43:28,309 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 23 predicate places. [2022-11-18 18:43:28,309 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 228 transitions, 2207 flow [2022-11-18 18:43:28,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:28,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:28,310 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] [2022-11-18 18:43:28,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:43:28,311 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:28,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash -987166759, now seen corresponding path program 1 times [2022-11-18 18:43:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:28,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115456877] [2022-11-18 18:43:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:28,586 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 18:43:28,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:28,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115456877] [2022-11-18 18:43:28,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115456877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:28,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103116536] [2022-11-18 18:43:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:28,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:28,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:28,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:28,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:43:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:28,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:43:28,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:28,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:28,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103116536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:28,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:28,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-18 18:43:28,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355020725] [2022-11-18 18:43:28,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:28,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:28,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:28,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:28,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:28,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-11-18 18:43:28,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 228 transitions, 2207 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:28,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:28,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-11-18 18:43:28,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:30,189 INFO L130 PetriNetUnfolder]: 1988/6590 cut-off events. [2022-11-18 18:43:30,189 INFO L131 PetriNetUnfolder]: For 36009/36009 co-relation queries the response was YES. [2022-11-18 18:43:30,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23025 conditions, 6590 events. 1988/6590 cut-off events. For 36009/36009 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 68670 event pairs, 75 based on Foata normal form. 94/5906 useless extension candidates. Maximal degree in co-relation 22406. Up to 2630 conditions per place. [2022-11-18 18:43:30,263 INFO L137 encePairwiseOnDemand]: 115/124 looper letters, 163 selfloop transitions, 14 changer transitions 0/248 dead transitions. [2022-11-18 18:43:30,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 248 transitions, 2777 flow [2022-11-18 18:43:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:43:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:43:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2022-11-18 18:43:30,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7473118279569892 [2022-11-18 18:43:30,267 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2022-11-18 18:43:30,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2022-11-18 18:43:30,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:30,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2022-11-18 18:43:30,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:30,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:30,274 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:30,275 INFO L175 Difference]: Start difference. First operand has 131 places, 228 transitions, 2207 flow. Second operand 6 states and 556 transitions. [2022-11-18 18:43:30,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 248 transitions, 2777 flow [2022-11-18 18:43:30,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 248 transitions, 2702 flow, removed 29 selfloop flow, removed 3 redundant places. [2022-11-18 18:43:30,374 INFO L231 Difference]: Finished difference. Result has 134 places, 221 transitions, 2095 flow [2022-11-18 18:43:30,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2095, PETRI_PLACES=134, PETRI_TRANSITIONS=221} [2022-11-18 18:43:30,376 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 26 predicate places. [2022-11-18 18:43:30,376 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 221 transitions, 2095 flow [2022-11-18 18:43:30,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:30,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:30,377 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-11-18 18:43:30,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 18:43:30,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:30,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:30,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2049892247, now seen corresponding path program 2 times [2022-11-18 18:43:30,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:30,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460513654] [2022-11-18 18:43:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:30,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:30,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:30,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460513654] [2022-11-18 18:43:30,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460513654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:30,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091180304] [2022-11-18 18:43:30,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:43:30,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:30,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:30,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:30,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:43:30,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:43:30,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:30,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:43:30,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:31,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:31,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091180304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:31,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:31,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-18 18:43:31,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588941441] [2022-11-18 18:43:31,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:31,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 18:43:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 18:43:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:43:31,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-18 18:43:31,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 221 transitions, 2095 flow. Second operand has 19 states, 19 states have (on average 87.47368421052632) internal successors, (1662), 19 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:31,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:31,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-18 18:43:31,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:36,568 INFO L130 PetriNetUnfolder]: 8343/27034 cut-off events. [2022-11-18 18:43:36,569 INFO L131 PetriNetUnfolder]: For 204644/204644 co-relation queries the response was YES. [2022-11-18 18:43:36,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85946 conditions, 27034 events. 8343/27034 cut-off events. For 204644/204644 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 326193 event pairs, 47 based on Foata normal form. 2884/26717 useless extension candidates. Maximal degree in co-relation 84382. Up to 4754 conditions per place. [2022-11-18 18:43:36,984 INFO L137 encePairwiseOnDemand]: 106/124 looper letters, 150 selfloop transitions, 373 changer transitions 0/593 dead transitions. [2022-11-18 18:43:36,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 593 transitions, 7463 flow [2022-11-18 18:43:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:43:36,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:43:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1576 transitions. [2022-11-18 18:43:36,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7943548387096774 [2022-11-18 18:43:36,991 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1576 transitions. [2022-11-18 18:43:36,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1576 transitions. [2022-11-18 18:43:36,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:36,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1576 transitions. [2022-11-18 18:43:36,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.5) internal successors, (1576), 16 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:37,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:37,005 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:37,006 INFO L175 Difference]: Start difference. First operand has 134 places, 221 transitions, 2095 flow. Second operand 16 states and 1576 transitions. [2022-11-18 18:43:37,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 593 transitions, 7463 flow [2022-11-18 18:43:37,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 593 transitions, 7424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:43:37,277 INFO L231 Difference]: Finished difference. Result has 155 places, 549 transitions, 8157 flow [2022-11-18 18:43:37,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8157, PETRI_PLACES=155, PETRI_TRANSITIONS=549} [2022-11-18 18:43:37,278 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 47 predicate places. [2022-11-18 18:43:37,279 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 549 transitions, 8157 flow [2022-11-18 18:43:37,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 87.47368421052632) internal successors, (1662), 19 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:37,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:37,280 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:37,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:37,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:37,493 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 18:43:37,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash -938060048, now seen corresponding path program 1 times [2022-11-18 18:43:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:37,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451594546] [2022-11-18 18:43:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:37,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:37,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451594546] [2022-11-18 18:43:37,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451594546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:37,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489119217] [2022-11-18 18:43:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:37,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:37,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:37,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:37,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5134f958-f971-44c7-9999-05497226df36/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:43:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:37,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:43:37,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:43:38,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:43:38,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489119217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:38,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:38,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2022-11-18 18:43:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498895234] [2022-11-18 18:43:38,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:38,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 18:43:38,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:43:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:43:38,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 124 [2022-11-18 18:43:38,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 549 transitions, 8157 flow. Second operand has 15 states, 15 states have (on average 79.53333333333333) internal successors, (1193), 15 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:38,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:38,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 124 [2022-11-18 18:43:38,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand