./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/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_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/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_83fc62a9-51cb-45c6-9967-fe28d99bfc13/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 c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:34:22,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:34:22,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:34:22,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:34:22,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:34:22,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:34:22,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:34:22,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:34:22,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:34:22,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:34:22,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:34:22,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:34:22,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:34:22,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:34:22,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:34:22,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:34:22,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:34:22,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:34:22,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:34:22,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:34:22,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:34:22,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:34:22,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:34:22,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:34:22,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:34:22,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:34:22,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:34:22,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:34:22,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:34:22,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:34:22,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:34:22,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:34:22,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:34:22,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:34:22,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:34:22,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:34:22,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:34:22,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:34:22,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:34:22,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:34:22,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:34:22,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:34:22,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:34:22,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:34:22,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:34:22,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:34:22,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:34:22,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:34:22,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:34:22,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:34:22,726 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:34:22,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:34:22,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:34:22,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:34:22,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:34:22,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:34:22,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:34:22,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:34:22,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:34:22,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:34:22,730 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:34:22,730 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:34:22,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:34:22,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:34:22,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:34:22,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:34:22,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:34:22,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:34:22,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:34:22,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:34:22,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:34:22,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:34:22,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:34:22,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:34:22,734 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:34:22,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:34:22,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:34:22,735 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_83fc62a9-51cb-45c6-9967-fe28d99bfc13/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c902137dd689344b33e1214981c74c26e47854ade5db7e5e71980f90fd07d90c [2022-11-18 20:34:23,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:34:23,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:34:23,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:34:23,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:34:23,120 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:34:23,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2022-11-18 20:34:23,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/data/18704b492/289e99ed64a04e5886b104e26bc4e265/FLAGe340b569f [2022-11-18 20:34:23,801 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:34:23,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2022-11-18 20:34:23,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/data/18704b492/289e99ed64a04e5886b104e26bc4e265/FLAGe340b569f [2022-11-18 20:34:24,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/data/18704b492/289e99ed64a04e5886b104e26bc4e265 [2022-11-18 20:34:24,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:34:24,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:34:24,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:24,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:34:24,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:34:24,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3535dd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24, skipping insertion in model container [2022-11-18 20:34:24,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:34:24,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:34:24,485 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_83fc62a9-51cb-45c6-9967-fe28d99bfc13/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c[2947,2960] [2022-11-18 20:34:24,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:34:24,500 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:34:24,524 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_83fc62a9-51cb-45c6-9967-fe28d99bfc13/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c[2947,2960] [2022-11-18 20:34:24,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:34:24,544 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:34:24,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24 WrapperNode [2022-11-18 20:34:24,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:24,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:34:24,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:34:24,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:34:24,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,621 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 161 [2022-11-18 20:34:24,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:34:24,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:34:24,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:34:24,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:34:24,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,648 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:34:24,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:34:24,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:34:24,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:34:24,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (1/1) ... [2022-11-18 20:34:24,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:34:24,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:24,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:34:24,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:34:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:34:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:34:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:34:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:34:24,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:34:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:34:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:34:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:34:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:34:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:34:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:34:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:34:24,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:34:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:34:24,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:34:24,738 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:34:24,942 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:34:24,960 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:34:25,399 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:34:25,527 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:34:25,528 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:34:25,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:25 BoogieIcfgContainer [2022-11-18 20:34:25,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:34:25,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:34:25,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:34:25,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:34:25,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:24" (1/3) ... [2022-11-18 20:34:25,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abae03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:25, skipping insertion in model container [2022-11-18 20:34:25,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:24" (2/3) ... [2022-11-18 20:34:25,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abae03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:25, skipping insertion in model container [2022-11-18 20:34:25,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:25" (3/3) ... [2022-11-18 20:34:25,544 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2022-11-18 20:34:25,554 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:34:25,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:34:25,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 20:34:25,567 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:34:25,678 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:34:25,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 157 transitions, 330 flow [2022-11-18 20:34:25,798 INFO L130 PetriNetUnfolder]: 11/155 cut-off events. [2022-11-18 20:34:25,798 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:34:25,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 155 events. 11/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 182 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2022-11-18 20:34:25,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 157 transitions, 330 flow [2022-11-18 20:34:25,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 136 transitions, 281 flow [2022-11-18 20:34:25,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:34:25,830 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;@2b4ac987, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:34:25,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-18 20:34:25,849 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-18 20:34:25,849 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:34:25,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:25,851 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:25,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1057843645, now seen corresponding path program 1 times [2022-11-18 20:34:25,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:25,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698657627] [2022-11-18 20:34:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:25,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:26,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:26,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698657627] [2022-11-18 20:34:26,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698657627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:26,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:26,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:34:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279940716] [2022-11-18 20:34:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:26,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:34:26,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:26,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:34:26,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:34:26,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 157 [2022-11-18 20:34:26,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 136 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:26,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:26,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 157 [2022-11-18 20:34:26,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:26,767 INFO L130 PetriNetUnfolder]: 27/270 cut-off events. [2022-11-18 20:34:26,767 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-18 20:34:26,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 270 events. 27/270 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 962 event pairs, 16 based on Foata normal form. 46/276 useless extension candidates. Maximal degree in co-relation 182. Up to 43 conditions per place. [2022-11-18 20:34:26,776 INFO L137 encePairwiseOnDemand]: 145/157 looper letters, 40 selfloop transitions, 4 changer transitions 2/150 dead transitions. [2022-11-18 20:34:26,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 150 transitions, 406 flow [2022-11-18 20:34:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:34:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 676 transitions. [2022-11-18 20:34:26,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8611464968152867 [2022-11-18 20:34:26,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 676 transitions. [2022-11-18 20:34:26,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 676 transitions. [2022-11-18 20:34:26,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:26,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 676 transitions. [2022-11-18 20:34:26,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:26,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:26,831 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:26,835 INFO L175 Difference]: Start difference. First operand has 133 places, 136 transitions, 281 flow. Second operand 5 states and 676 transitions. [2022-11-18 20:34:26,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 150 transitions, 406 flow [2022-11-18 20:34:26,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 150 transitions, 396 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:34:26,847 INFO L231 Difference]: Finished difference. Result has 137 places, 131 transitions, 290 flow [2022-11-18 20:34:26,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=137, PETRI_TRANSITIONS=131} [2022-11-18 20:34:26,854 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 4 predicate places. [2022-11-18 20:34:26,855 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 131 transitions, 290 flow [2022-11-18 20:34:26,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:26,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:26,857 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:26,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:34:26,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash 535925059, now seen corresponding path program 1 times [2022-11-18 20:34:26,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:26,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783573467] [2022-11-18 20:34:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:26,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:27,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:27,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783573467] [2022-11-18 20:34:27,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783573467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:27,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060800929] [2022-11-18 20:34:27,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:27,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:27,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:27,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:27,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:34:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:27,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:34:27,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:27,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:27,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060800929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:27,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:27,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:34:27,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606143397] [2022-11-18 20:34:27,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:27,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:34:27,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:27,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:34:27,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:34:27,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 157 [2022-11-18 20:34:27,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 131 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 126.66666666666667) internal successors, (1520), 12 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:27,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:27,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 157 [2022-11-18 20:34:27,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:28,002 INFO L130 PetriNetUnfolder]: 66/597 cut-off events. [2022-11-18 20:34:28,003 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-18 20:34:28,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 597 events. 66/597 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3202 event pairs, 40 based on Foata normal form. 3/510 useless extension candidates. Maximal degree in co-relation 624. Up to 45 conditions per place. [2022-11-18 20:34:28,010 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 88 selfloop transitions, 18 changer transitions 0/210 dead transitions. [2022-11-18 20:34:28,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 210 transitions, 698 flow [2022-11-18 20:34:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:34:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:34:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2341 transitions. [2022-11-18 20:34:28,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8283793347487615 [2022-11-18 20:34:28,018 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2341 transitions. [2022-11-18 20:34:28,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2341 transitions. [2022-11-18 20:34:28,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:28,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2341 transitions. [2022-11-18 20:34:28,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 130.05555555555554) internal successors, (2341), 18 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 157.0) internal successors, (2983), 19 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,038 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 157.0) internal successors, (2983), 19 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,039 INFO L175 Difference]: Start difference. First operand has 137 places, 131 transitions, 290 flow. Second operand 18 states and 2341 transitions. [2022-11-18 20:34:28,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 210 transitions, 698 flow [2022-11-18 20:34:28,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 210 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:34:28,045 INFO L231 Difference]: Finished difference. Result has 155 places, 143 transitions, 394 flow [2022-11-18 20:34:28,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=394, PETRI_PLACES=155, PETRI_TRANSITIONS=143} [2022-11-18 20:34:28,047 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 22 predicate places. [2022-11-18 20:34:28,047 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 143 transitions, 394 flow [2022-11-18 20:34:28,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.66666666666667) internal successors, (1520), 12 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:28,049 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:28,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:34:28,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:28,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash -566192012, now seen corresponding path program 1 times [2022-11-18 20:34:28,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:28,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554242192] [2022-11-18 20:34:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:28,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:28,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:28,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554242192] [2022-11-18 20:34:28,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554242192] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:28,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310324550] [2022-11-18 20:34:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:28,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:28,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:28,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:28,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:34:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:28,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:34:28,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:28,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:28,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310324550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:28,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:28,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:34:28,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528267328] [2022-11-18 20:34:28,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:34:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:28,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:34:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:34:28,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 157 [2022-11-18 20:34:28,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 143 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:28,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 157 [2022-11-18 20:34:28,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:28,851 INFO L130 PetriNetUnfolder]: 66/593 cut-off events. [2022-11-18 20:34:28,851 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-11-18 20:34:28,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 593 events. 66/593 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3174 event pairs, 40 based on Foata normal form. 4/507 useless extension candidates. Maximal degree in co-relation 668. Up to 136 conditions per place. [2022-11-18 20:34:28,856 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 41 selfloop transitions, 11 changer transitions 0/156 dead transitions. [2022-11-18 20:34:28,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 156 transitions, 511 flow [2022-11-18 20:34:28,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:34:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:34:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 912 transitions. [2022-11-18 20:34:28,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8298453139217471 [2022-11-18 20:34:28,860 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 912 transitions. [2022-11-18 20:34:28,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 912 transitions. [2022-11-18 20:34:28,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:28,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 912 transitions. [2022-11-18 20:34:28,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.28571428571428) internal successors, (912), 7 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,871 INFO L175 Difference]: Start difference. First operand has 155 places, 143 transitions, 394 flow. Second operand 7 states and 912 transitions. [2022-11-18 20:34:28,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 156 transitions, 511 flow [2022-11-18 20:34:28,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 156 transitions, 479 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:34:28,882 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 357 flow [2022-11-18 20:34:28,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2022-11-18 20:34:28,886 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 18 predicate places. [2022-11-18 20:34:28,886 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 357 flow [2022-11-18 20:34:28,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:28,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:28,887 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:28,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:34:29,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:29,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:29,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash -692072019, now seen corresponding path program 1 times [2022-11-18 20:34:29,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:29,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233829810] [2022-11-18 20:34:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:29,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:29,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:29,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233829810] [2022-11-18 20:34:29,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233829810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:29,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:29,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:34:29,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145524992] [2022-11-18 20:34:29,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:29,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:34:29,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:29,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:34:29,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:34:29,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 157 [2022-11-18 20:34:29,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:29,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:29,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 157 [2022-11-18 20:34:29,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:29,838 INFO L130 PetriNetUnfolder]: 606/2113 cut-off events. [2022-11-18 20:34:29,839 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-18 20:34:29,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 2113 events. 606/2113 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 14631 event pairs, 210 based on Foata normal form. 0/1538 useless extension candidates. Maximal degree in co-relation 2696. Up to 609 conditions per place. [2022-11-18 20:34:29,854 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 49 selfloop transitions, 7 changer transitions 0/171 dead transitions. [2022-11-18 20:34:29,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 171 transitions, 536 flow [2022-11-18 20:34:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:34:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 678 transitions. [2022-11-18 20:34:29,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8636942675159236 [2022-11-18 20:34:29,857 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 678 transitions. [2022-11-18 20:34:29,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 678 transitions. [2022-11-18 20:34:29,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:29,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 678 transitions. [2022-11-18 20:34:29,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:29,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:29,862 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:29,862 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 357 flow. Second operand 5 states and 678 transitions. [2022-11-18 20:34:29,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 171 transitions, 536 flow [2022-11-18 20:34:29,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 171 transitions, 522 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:34:29,869 INFO L231 Difference]: Finished difference. Result has 154 places, 145 transitions, 399 flow [2022-11-18 20:34:29,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=154, PETRI_TRANSITIONS=145} [2022-11-18 20:34:29,872 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 21 predicate places. [2022-11-18 20:34:29,872 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 145 transitions, 399 flow [2022-11-18 20:34:29,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:29,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:29,873 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:29,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:34:29,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:29,874 INFO L85 PathProgramCache]: Analyzing trace with hash 880097675, now seen corresponding path program 1 times [2022-11-18 20:34:29,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:29,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050450981] [2022-11-18 20:34:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:29,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:30,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:30,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050450981] [2022-11-18 20:34:30,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050450981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:30,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:30,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:34:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674064369] [2022-11-18 20:34:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:30,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:34:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:30,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:34:30,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:34:30,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 157 [2022-11-18 20:34:30,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 145 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:30,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:30,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 157 [2022-11-18 20:34:30,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:30,758 INFO L130 PetriNetUnfolder]: 561/2723 cut-off events. [2022-11-18 20:34:30,758 INFO L131 PetriNetUnfolder]: For 798/798 co-relation queries the response was YES. [2022-11-18 20:34:30,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 2723 events. 561/2723 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 20754 event pairs, 185 based on Foata normal form. 0/2398 useless extension candidates. Maximal degree in co-relation 3652. Up to 624 conditions per place. [2022-11-18 20:34:30,784 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 35 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2022-11-18 20:34:30,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 155 transitions, 508 flow [2022-11-18 20:34:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:34:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 654 transitions. [2022-11-18 20:34:30,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8331210191082803 [2022-11-18 20:34:30,788 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 654 transitions. [2022-11-18 20:34:30,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 654 transitions. [2022-11-18 20:34:30,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:30,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 654 transitions. [2022-11-18 20:34:30,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:30,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:30,794 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:30,794 INFO L175 Difference]: Start difference. First operand has 154 places, 145 transitions, 399 flow. Second operand 5 states and 654 transitions. [2022-11-18 20:34:30,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 155 transitions, 508 flow [2022-11-18 20:34:30,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 155 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:34:30,804 INFO L231 Difference]: Finished difference. Result has 157 places, 144 transitions, 413 flow [2022-11-18 20:34:30,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=157, PETRI_TRANSITIONS=144} [2022-11-18 20:34:30,808 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 24 predicate places. [2022-11-18 20:34:30,808 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 144 transitions, 413 flow [2022-11-18 20:34:30,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:30,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:30,809 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:30,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:34:30,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:30,810 INFO L85 PathProgramCache]: Analyzing trace with hash 880097674, now seen corresponding path program 1 times [2022-11-18 20:34:30,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:30,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861330183] [2022-11-18 20:34:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:30,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:31,127 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 20:34:31,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:31,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861330183] [2022-11-18 20:34:31,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861330183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:31,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:31,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:34:31,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745861360] [2022-11-18 20:34:31,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:31,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:34:31,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:31,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:34:31,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:34:31,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 157 [2022-11-18 20:34:31,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 144 transitions, 413 flow. Second operand has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:31,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 157 [2022-11-18 20:34:31,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:31,613 INFO L130 PetriNetUnfolder]: 310/2095 cut-off events. [2022-11-18 20:34:31,613 INFO L131 PetriNetUnfolder]: For 551/551 co-relation queries the response was YES. [2022-11-18 20:34:31,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 2095 events. 310/2095 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 15655 event pairs, 169 based on Foata normal form. 2/1834 useless extension candidates. Maximal degree in co-relation 3192. Up to 581 conditions per place. [2022-11-18 20:34:31,630 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 38 selfloop transitions, 6 changer transitions 5/151 dead transitions. [2022-11-18 20:34:31,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 151 transitions, 533 flow [2022-11-18 20:34:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:34:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:34:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 858 transitions. [2022-11-18 20:34:31,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7807097361237488 [2022-11-18 20:34:31,634 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 858 transitions. [2022-11-18 20:34:31,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 858 transitions. [2022-11-18 20:34:31,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:31,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 858 transitions. [2022-11-18 20:34:31,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,641 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,642 INFO L175 Difference]: Start difference. First operand has 157 places, 144 transitions, 413 flow. Second operand 7 states and 858 transitions. [2022-11-18 20:34:31,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 151 transitions, 533 flow [2022-11-18 20:34:31,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 527 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:34:31,648 INFO L231 Difference]: Finished difference. Result has 162 places, 144 transitions, 425 flow [2022-11-18 20:34:31,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=162, PETRI_TRANSITIONS=144} [2022-11-18 20:34:31,649 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 29 predicate places. [2022-11-18 20:34:31,649 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 425 flow [2022-11-18 20:34:31,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:31,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:31,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:31,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:34:31,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash -706720060, now seen corresponding path program 1 times [2022-11-18 20:34:31,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:31,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470264107] [2022-11-18 20:34:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:31,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:32,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:32,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470264107] [2022-11-18 20:34:32,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470264107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:32,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005732081] [2022-11-18 20:34:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:32,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:32,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:32,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:32,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:34:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:32,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:34:32,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:32,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:32,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005732081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:32,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:32,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-18 20:34:32,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143769583] [2022-11-18 20:34:32,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:32,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:34:32,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:32,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:34:32,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:34:32,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 157 [2022-11-18 20:34:32,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 144 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:32,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:32,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 157 [2022-11-18 20:34:32,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:32,639 INFO L130 PetriNetUnfolder]: 217/985 cut-off events. [2022-11-18 20:34:32,639 INFO L131 PetriNetUnfolder]: For 326/326 co-relation queries the response was YES. [2022-11-18 20:34:32,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1846 conditions, 985 events. 217/985 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5433 event pairs, 16 based on Foata normal form. 88/933 useless extension candidates. Maximal degree in co-relation 1749. Up to 242 conditions per place. [2022-11-18 20:34:32,647 INFO L137 encePairwiseOnDemand]: 147/157 looper letters, 13 selfloop transitions, 10 changer transitions 9/147 dead transitions. [2022-11-18 20:34:32,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 147 transitions, 496 flow [2022-11-18 20:34:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:34:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:34:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 775 transitions. [2022-11-18 20:34:32,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8227176220806794 [2022-11-18 20:34:32,650 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 775 transitions. [2022-11-18 20:34:32,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 775 transitions. [2022-11-18 20:34:32,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:32,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 775 transitions. [2022-11-18 20:34:32,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:32,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:32,657 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:32,657 INFO L175 Difference]: Start difference. First operand has 162 places, 144 transitions, 425 flow. Second operand 6 states and 775 transitions. [2022-11-18 20:34:32,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 147 transitions, 496 flow [2022-11-18 20:34:32,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 147 transitions, 482 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 20:34:32,662 INFO L231 Difference]: Finished difference. Result has 158 places, 135 transitions, 398 flow [2022-11-18 20:34:32,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=158, PETRI_TRANSITIONS=135} [2022-11-18 20:34:32,663 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 25 predicate places. [2022-11-18 20:34:32,663 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 135 transitions, 398 flow [2022-11-18 20:34:32,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:32,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:32,664 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:32,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:32,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:34:32,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:32,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 811034429, now seen corresponding path program 2 times [2022-11-18 20:34:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:32,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282132285] [2022-11-18 20:34:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:32,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:33,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:33,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282132285] [2022-11-18 20:34:33,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282132285] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:33,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567144998] [2022-11-18 20:34:33,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:34:33,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:33,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:33,123 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:33,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:34:33,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:34:33,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:33,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:34:33,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:34:33,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:34:33,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567144998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:33,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:33,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:34:33,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690326809] [2022-11-18 20:34:33,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:33,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:34:33,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:33,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:34:33,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:34:33,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 157 [2022-11-18 20:34:33,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 135 transitions, 398 flow. Second operand has 18 states, 18 states have (on average 116.61111111111111) internal successors, (2099), 18 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:33,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:33,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 157 [2022-11-18 20:34:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:34,601 INFO L130 PetriNetUnfolder]: 139/1525 cut-off events. [2022-11-18 20:34:34,602 INFO L131 PetriNetUnfolder]: For 490/502 co-relation queries the response was YES. [2022-11-18 20:34:34,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 1525 events. 139/1525 cut-off events. For 490/502 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9650 event pairs, 36 based on Foata normal form. 2/1287 useless extension candidates. Maximal degree in co-relation 2234. Up to 103 conditions per place. [2022-11-18 20:34:34,615 INFO L137 encePairwiseOnDemand]: 146/157 looper letters, 96 selfloop transitions, 25 changer transitions 0/213 dead transitions. [2022-11-18 20:34:34,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 213 transitions, 965 flow [2022-11-18 20:34:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:34:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:34:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2823 transitions. [2022-11-18 20:34:34,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7492038216560509 [2022-11-18 20:34:34,624 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2823 transitions. [2022-11-18 20:34:34,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2823 transitions. [2022-11-18 20:34:34,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:34,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2823 transitions. [2022-11-18 20:34:34,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 117.625) internal successors, (2823), 24 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:34,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 157.0) internal successors, (3925), 25 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:34,647 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 157.0) internal successors, (3925), 25 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:34,648 INFO L175 Difference]: Start difference. First operand has 158 places, 135 transitions, 398 flow. Second operand 24 states and 2823 transitions. [2022-11-18 20:34:34,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 213 transitions, 965 flow [2022-11-18 20:34:34,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 213 transitions, 856 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-18 20:34:34,655 INFO L231 Difference]: Finished difference. Result has 165 places, 139 transitions, 428 flow [2022-11-18 20:34:34,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=428, PETRI_PLACES=165, PETRI_TRANSITIONS=139} [2022-11-18 20:34:34,659 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 32 predicate places. [2022-11-18 20:34:34,660 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 139 transitions, 428 flow [2022-11-18 20:34:34,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 116.61111111111111) internal successors, (2099), 18 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:34,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:34,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:34,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:34,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:34,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:34,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1422573891, now seen corresponding path program 1 times [2022-11-18 20:34:34,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:34,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948020188] [2022-11-18 20:34:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:34,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:34,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:34,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948020188] [2022-11-18 20:34:34,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948020188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:34,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:34,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:34:34,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027714274] [2022-11-18 20:34:34,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:34:34,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:34,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:34:34,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:34:34,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 157 [2022-11-18 20:34:34,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 139 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:34,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:34,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 157 [2022-11-18 20:34:34,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:35,504 INFO L130 PetriNetUnfolder]: 577/2047 cut-off events. [2022-11-18 20:34:35,505 INFO L131 PetriNetUnfolder]: For 719/719 co-relation queries the response was YES. [2022-11-18 20:34:35,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 2047 events. 577/2047 cut-off events. For 719/719 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 12524 event pairs, 54 based on Foata normal form. 0/1849 useless extension candidates. Maximal degree in co-relation 1895. Up to 339 conditions per place. [2022-11-18 20:34:35,522 INFO L137 encePairwiseOnDemand]: 147/157 looper letters, 40 selfloop transitions, 9 changer transitions 0/163 dead transitions. [2022-11-18 20:34:35,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 163 transitions, 598 flow [2022-11-18 20:34:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:34:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:34:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 897 transitions. [2022-11-18 20:34:35,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.816196542311192 [2022-11-18 20:34:35,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 897 transitions. [2022-11-18 20:34:35,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 897 transitions. [2022-11-18 20:34:35,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:35,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 897 transitions. [2022-11-18 20:34:35,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:35,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:35,533 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:35,533 INFO L175 Difference]: Start difference. First operand has 165 places, 139 transitions, 428 flow. Second operand 7 states and 897 transitions. [2022-11-18 20:34:35,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 163 transitions, 598 flow [2022-11-18 20:34:35,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 540 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-18 20:34:35,540 INFO L231 Difference]: Finished difference. Result has 157 places, 141 transitions, 408 flow [2022-11-18 20:34:35,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=157, PETRI_TRANSITIONS=141} [2022-11-18 20:34:35,542 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 24 predicate places. [2022-11-18 20:34:35,542 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 141 transitions, 408 flow [2022-11-18 20:34:35,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:35,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:35,543 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:35,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:34:35,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:35,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:35,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1150117167, now seen corresponding path program 1 times [2022-11-18 20:34:35,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:35,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72301948] [2022-11-18 20:34:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:35,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:35,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72301948] [2022-11-18 20:34:35,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72301948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:35,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:35,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:34:35,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660850334] [2022-11-18 20:34:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:35,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:34:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:34:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:34:35,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 157 [2022-11-18 20:34:35,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 141 transitions, 408 flow. Second operand has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:35,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:35,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 157 [2022-11-18 20:34:35,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:36,168 INFO L130 PetriNetUnfolder]: 517/1939 cut-off events. [2022-11-18 20:34:36,168 INFO L131 PetriNetUnfolder]: For 786/786 co-relation queries the response was YES. [2022-11-18 20:34:36,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3822 conditions, 1939 events. 517/1939 cut-off events. For 786/786 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11755 event pairs, 126 based on Foata normal form. 0/1813 useless extension candidates. Maximal degree in co-relation 1821. Up to 478 conditions per place. [2022-11-18 20:34:36,182 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 27 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2022-11-18 20:34:36,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 145 transitions, 490 flow [2022-11-18 20:34:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:34:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2022-11-18 20:34:36,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7949044585987262 [2022-11-18 20:34:36,184 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2022-11-18 20:34:36,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2022-11-18 20:34:36,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:36,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2022-11-18 20:34:36,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:36,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:36,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:36,189 INFO L175 Difference]: Start difference. First operand has 157 places, 141 transitions, 408 flow. Second operand 5 states and 624 transitions. [2022-11-18 20:34:36,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 145 transitions, 490 flow [2022-11-18 20:34:36,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 145 transitions, 478 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:34:36,194 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 406 flow [2022-11-18 20:34:36,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2022-11-18 20:34:36,196 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 23 predicate places. [2022-11-18 20:34:36,196 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 406 flow [2022-11-18 20:34:36,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:36,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:36,197 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:36,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:34:36,198 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2109056960, now seen corresponding path program 1 times [2022-11-18 20:34:36,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:36,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759811356] [2022-11-18 20:34:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:36,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:38,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:38,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759811356] [2022-11-18 20:34:38,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759811356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:38,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340711437] [2022-11-18 20:34:38,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:38,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:38,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:38,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:38,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:34:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:38,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 20:34:38,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:39,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:34:39,104 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:34:39,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:34:39,531 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-18 20:34:39,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:34:39,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:34:40,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:34:40,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 20:34:41,845 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 20:34:41,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 20:34:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:42,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:45,598 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:45,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-18 20:34:45,619 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:45,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 84 [2022-11-18 20:34:45,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2022-11-18 20:34:45,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-11-18 20:34:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:47,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340711437] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:47,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:47,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 25] total 72 [2022-11-18 20:34:47,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714015367] [2022-11-18 20:34:47,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:47,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-18 20:34:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-18 20:34:47,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=4934, Unknown=5, NotChecked=0, Total=5256 [2022-11-18 20:34:47,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2022-11-18 20:34:47,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 406 flow. Second operand has 73 states, 73 states have (on average 68.1917808219178) internal successors, (4978), 73 states have internal predecessors, (4978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:47,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:47,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2022-11-18 20:34:47,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:53,664 INFO L130 PetriNetUnfolder]: 2786/5861 cut-off events. [2022-11-18 20:34:53,664 INFO L131 PetriNetUnfolder]: For 2574/2574 co-relation queries the response was YES. [2022-11-18 20:34:53,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12967 conditions, 5861 events. 2786/5861 cut-off events. For 2574/2574 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 39800 event pairs, 1364 based on Foata normal form. 0/5505 useless extension candidates. Maximal degree in co-relation 5331. Up to 4092 conditions per place. [2022-11-18 20:34:53,718 INFO L137 encePairwiseOnDemand]: 112/157 looper letters, 99 selfloop transitions, 97 changer transitions 3/249 dead transitions. [2022-11-18 20:34:53,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 249 transitions, 1109 flow [2022-11-18 20:34:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:34:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:34:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2821 transitions. [2022-11-18 20:34:53,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44920382165605094 [2022-11-18 20:34:53,729 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2821 transitions. [2022-11-18 20:34:53,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2821 transitions. [2022-11-18 20:34:53,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:53,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2821 transitions. [2022-11-18 20:34:53,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 70.525) internal successors, (2821), 40 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:53,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 157.0) internal successors, (6437), 41 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:53,772 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 157.0) internal successors, (6437), 41 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:53,772 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 406 flow. Second operand 40 states and 2821 transitions. [2022-11-18 20:34:53,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 249 transitions, 1109 flow [2022-11-18 20:34:53,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 249 transitions, 1093 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:34:53,782 INFO L231 Difference]: Finished difference. Result has 207 places, 228 transitions, 1012 flow [2022-11-18 20:34:53,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1012, PETRI_PLACES=207, PETRI_TRANSITIONS=228} [2022-11-18 20:34:53,784 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 74 predicate places. [2022-11-18 20:34:53,784 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 228 transitions, 1012 flow [2022-11-18 20:34:53,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 68.1917808219178) internal successors, (4978), 73 states have internal predecessors, (4978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:53,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:53,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:53,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:53,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:53,992 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:53,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2135456195, now seen corresponding path program 1 times [2022-11-18 20:34:53,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:53,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857876399] [2022-11-18 20:34:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:53,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:54,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:54,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857876399] [2022-11-18 20:34:54,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857876399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:54,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:54,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:34:54,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207826367] [2022-11-18 20:34:54,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:34:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:54,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:34:54,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:34:54,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 157 [2022-11-18 20:34:54,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 228 transitions, 1012 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:54,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:54,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 157 [2022-11-18 20:34:54,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:55,029 INFO L130 PetriNetUnfolder]: 1200/4369 cut-off events. [2022-11-18 20:34:55,029 INFO L131 PetriNetUnfolder]: For 1946/2562 co-relation queries the response was YES. [2022-11-18 20:34:55,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9506 conditions, 4369 events. 1200/4369 cut-off events. For 1946/2562 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 34742 event pairs, 523 based on Foata normal form. 131/4336 useless extension candidates. Maximal degree in co-relation 8771. Up to 1524 conditions per place. [2022-11-18 20:34:55,076 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 64 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-11-18 20:34:55,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 232 transitions, 1154 flow [2022-11-18 20:34:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:34:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:34:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2022-11-18 20:34:55,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8768577494692145 [2022-11-18 20:34:55,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2022-11-18 20:34:55,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2022-11-18 20:34:55,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:55,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2022-11-18 20:34:55,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:55,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:55,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:55,083 INFO L175 Difference]: Start difference. First operand has 207 places, 228 transitions, 1012 flow. Second operand 3 states and 413 transitions. [2022-11-18 20:34:55,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 232 transitions, 1154 flow [2022-11-18 20:34:55,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 232 transitions, 1078 flow, removed 22 selfloop flow, removed 16 redundant places. [2022-11-18 20:34:55,108 INFO L231 Difference]: Finished difference. Result has 193 places, 228 transitions, 942 flow [2022-11-18 20:34:55,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=942, PETRI_PLACES=193, PETRI_TRANSITIONS=228} [2022-11-18 20:34:55,110 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 60 predicate places. [2022-11-18 20:34:55,111 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 228 transitions, 942 flow [2022-11-18 20:34:55,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:55,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:55,111 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:55,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:34:55,112 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:55,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash 956256820, now seen corresponding path program 1 times [2022-11-18 20:34:55,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:55,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382277196] [2022-11-18 20:34:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:55,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:55,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:55,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382277196] [2022-11-18 20:34:55,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382277196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:55,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:55,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:34:55,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117674425] [2022-11-18 20:34:55,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:55,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:34:55,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:34:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:34:55,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 157 [2022-11-18 20:34:55,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 228 transitions, 942 flow. Second operand has 8 states, 8 states have (on average 110.375) internal successors, (883), 8 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:55,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:55,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 157 [2022-11-18 20:34:55,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:56,964 INFO L130 PetriNetUnfolder]: 3320/7807 cut-off events. [2022-11-18 20:34:56,964 INFO L131 PetriNetUnfolder]: For 6352/6379 co-relation queries the response was YES. [2022-11-18 20:34:57,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20492 conditions, 7807 events. 3320/7807 cut-off events. For 6352/6379 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 58290 event pairs, 322 based on Foata normal form. 176/7802 useless extension candidates. Maximal degree in co-relation 18652. Up to 3451 conditions per place. [2022-11-18 20:34:57,098 INFO L137 encePairwiseOnDemand]: 146/157 looper letters, 161 selfloop transitions, 17 changer transitions 0/293 dead transitions. [2022-11-18 20:34:57,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 293 transitions, 1613 flow [2022-11-18 20:34:57,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:34:57,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:34:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1150 transitions. [2022-11-18 20:34:57,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.732484076433121 [2022-11-18 20:34:57,101 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1150 transitions. [2022-11-18 20:34:57,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1150 transitions. [2022-11-18 20:34:57,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:57,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1150 transitions. [2022-11-18 20:34:57,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:57,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:57,107 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:57,107 INFO L175 Difference]: Start difference. First operand has 193 places, 228 transitions, 942 flow. Second operand 10 states and 1150 transitions. [2022-11-18 20:34:57,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 293 transitions, 1613 flow [2022-11-18 20:34:57,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 293 transitions, 1611 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:34:57,125 INFO L231 Difference]: Finished difference. Result has 206 places, 235 transitions, 1043 flow [2022-11-18 20:34:57,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1043, PETRI_PLACES=206, PETRI_TRANSITIONS=235} [2022-11-18 20:34:57,126 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 73 predicate places. [2022-11-18 20:34:57,126 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 235 transitions, 1043 flow [2022-11-18 20:34:57,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 110.375) internal successors, (883), 8 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:57,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:57,127 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:57,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:34:57,128 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:34:57,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:57,128 INFO L85 PathProgramCache]: Analyzing trace with hash 892820830, now seen corresponding path program 1 times [2022-11-18 20:34:57,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:57,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090656553] [2022-11-18 20:34:57,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:57,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:57,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:57,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090656553] [2022-11-18 20:34:57,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090656553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:57,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762701923] [2022-11-18 20:34:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:57,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:57,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:57,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:57,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:34:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:34:57,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:57,714 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 20:34:57,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:57,931 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 20:34:57,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762701923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:57,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:57,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-18 20:34:57,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71951403] [2022-11-18 20:34:57,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:57,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:34:57,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:57,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:34:57,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:34:57,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 157 [2022-11-18 20:34:57,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 235 transitions, 1043 flow. Second operand has 15 states, 15 states have (on average 113.8) internal successors, (1707), 15 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:57,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:57,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 157 [2022-11-18 20:34:57,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:01,601 INFO L130 PetriNetUnfolder]: 6242/14500 cut-off events. [2022-11-18 20:35:01,601 INFO L131 PetriNetUnfolder]: For 15445/15549 co-relation queries the response was YES. [2022-11-18 20:35:01,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40444 conditions, 14500 events. 6242/14500 cut-off events. For 15445/15549 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 122827 event pairs, 1208 based on Foata normal form. 271/14317 useless extension candidates. Maximal degree in co-relation 38526. Up to 6530 conditions per place. [2022-11-18 20:35:01,757 INFO L137 encePairwiseOnDemand]: 139/157 looper letters, 220 selfloop transitions, 84 changer transitions 0/440 dead transitions. [2022-11-18 20:35:01,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 440 transitions, 2756 flow [2022-11-18 20:35:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:35:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 20:35:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2533 transitions. [2022-11-18 20:35:01,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.73335263462652 [2022-11-18 20:35:01,767 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2533 transitions. [2022-11-18 20:35:01,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2533 transitions. [2022-11-18 20:35:01,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:01,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2533 transitions. [2022-11-18 20:35:01,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 115.13636363636364) internal successors, (2533), 22 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:01,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 157.0) internal successors, (3611), 23 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:01,792 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 157.0) internal successors, (3611), 23 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:01,792 INFO L175 Difference]: Start difference. First operand has 206 places, 235 transitions, 1043 flow. Second operand 22 states and 2533 transitions. [2022-11-18 20:35:01,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 440 transitions, 2756 flow [2022-11-18 20:35:01,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 440 transitions, 2702 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-11-18 20:35:01,852 INFO L231 Difference]: Finished difference. Result has 231 places, 306 transitions, 1785 flow [2022-11-18 20:35:01,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1785, PETRI_PLACES=231, PETRI_TRANSITIONS=306} [2022-11-18 20:35:01,853 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 98 predicate places. [2022-11-18 20:35:01,853 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 306 transitions, 1785 flow [2022-11-18 20:35:01,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.8) internal successors, (1707), 15 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:01,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:01,855 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:01,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:02,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:02,069 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:35:02,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1741110447, now seen corresponding path program 1 times [2022-11-18 20:35:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:02,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200129023] [2022-11-18 20:35:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:02,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:02,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:02,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200129023] [2022-11-18 20:35:02,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200129023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:02,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:02,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:02,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52285956] [2022-11-18 20:35:02,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:02,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:02,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:02,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 157 [2022-11-18 20:35:02,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 306 transitions, 1785 flow. Second operand has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:02,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:02,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 157 [2022-11-18 20:35:02,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:02,664 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([452] L37-->L38: Formula: (= |v_thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_3| |v_thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1_3|) InVars {thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_3|} OutVars{thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1=|v_thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1_3|, thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_3|} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1][163], [24#L101-1true, 114#L82true, Black: 1630#(and (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| 2147483647) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| 2147483647) (<= ~n~0 2147483647)), 3184#(and (<= |thread2Thread1of1ForFork1_~flag~0#1| (* (div |thread2Thread1of1ForFork1_~flag~0#1| 256) 256)) (not (<= (+ (div |thread2Thread1of1ForFork1_~flag~0#1| 256) 1) 0))), Black: 2440#(and (= |thread1Thread1of1ForFork0_#t~mem1#1| 1) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 1) (= ~sum~0 0)), Black: 2442#(and (= |thread1Thread1of1ForFork0_#t~mem1#1| 1) (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 1) (= ~sum~0 0) (= ~element~0 1)), Black: 2438#(and (= ~sum~0 0) (= ~element~0 1)), Black: 781#(<= ~back~0 ~front~0), Black: 1670#true, Black: 2434#(and (= ~back~0 ~front~0) (= ~sum~0 0)), Black: 784#(and (<= |thread1Thread1of1ForFork0_~cond~0#1| (* 256 (div |thread1Thread1of1ForFork0_~cond~0#1| 256))) (<= ~back~0 ~front~0)), thread2Thread1of1ForFork1InUse, 96#L38true, Black: 3140#(and (<= ~back~0 (+ ~front~0 1)) (<= ~n~0 2147483647)), Black: 3164#(and (<= |thread1Thread1of1ForFork0_~cond~0#1| (* 256 (div |thread1Thread1of1ForFork0_~cond~0#1| 256))) (<= ~n~0 2147483647) (<= ~back~0 ~front~0)), Black: 3150#(and (<= |thread1Thread1of1ForFork0_~cond~0#1| (* 256 (div |thread1Thread1of1ForFork0_~cond~0#1| 256))) (<= ~n~0 2147483647)), 2436#(and (= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 1) (= ~sum~0 0)), 1676#(and (<= ~front~0 2147483646) (<= ~front~0 ~back~0)), Black: 2536#(<= ~n~0 2147483647), Black: 3144#(and (or (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (<= ~front~0 2147483646) (<= 0 ~front~0))) (<= ~back~0 (+ ~front~0 1)) (<= ~n~0 2147483647)), Black: 3154#(and (or (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0)) (<= ~front~0 2147483646) (<= |thread1Thread1of1ForFork0_#t~post2#1| 2147483646) (<= ~back~0 (+ ~front~0 1)) (<= ~n~0 2147483647) (<= 0 ~front~0) (or (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0)) (<= ~back~0 (+ |thread1Thread1of1ForFork0_#t~post2#1| 1))), Black: 3142#(and (<= ~back~0 (+ ~front~0 1)) (<= |thread1Thread1of1ForFork0_~cond~0#1| (* 256 (div |thread1Thread1of1ForFork0_~cond~0#1| 256))) (<= ~n~0 2147483647)), Black: 3148#(and (or (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0)) (<= ~front~0 2147483646) (<= ~back~0 (+ ~front~0 1)) (<= ~n~0 2147483647) (<= 0 ~front~0) (or (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0))), Black: 2404#(and (<= |thread1Thread1of1ForFork0_#t~mem1#1| 2147483647) (= ~sum~0 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 2147483647) (<= 0 ~front~0) (= ~queue~0.offset 0) (<= (+ (* ~front~0 4) ~queue~0.offset) 0)), Black: 3146#(and (or (and (<= ~front~0 2147483646) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (<= 0 ~front~0)) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0)) (or (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (<= ~front~0 2147483646) (<= 0 ~front~0))) (<= ~back~0 (+ ~front~0 1)) (<= ~n~0 2147483647)), Black: 3135#(and (<= ~n~0 2147483647) (<= ~back~0 ~front~0)), Black: 2388#(and (or (<= (+ ~front~0 ~n~0) (+ ~back~0 1)) (<= (+ (* ~front~0 4) ~queue~0.offset) 0)) (<= ~sum~0 0) (or (and (= ~sum~0 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 2147483647)) (not (= (+ (* ~front~0 4) ~queue~0.offset) 0))) (not (= ~queue~0.base |ULTIMATE.start_main_~#t2~0#1.base|)) (= ~queue~0.offset 0) (not (= ~queue~0.base |ULTIMATE.start_main_~#t1~0#1.base|)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 4) ~queue~0.offset)) 2147483647) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 1))))), Black: 2384#(and (<= (+ ~front~0 ~n~0) (+ ~back~0 1)) (not (= |ULTIMATE.start_create_fresh_int_array_#res#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= ~sum~0 0) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 4) |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 2147483647) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 1)))) (not (= |ULTIMATE.start_create_fresh_int_array_#res#1.base| |ULTIMATE.start_main_~#t2~0#1.base|)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483647) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 3160#(and (<= |thread1Thread1of1ForFork0_#t~post2#1| 2147483646) (<= ~n~0 2147483647) (<= ~back~0 ~front~0) (<= ~back~0 (+ |thread1Thread1of1ForFork0_#t~post2#1| 1))), 3156#(and (or (and (<= ~front~0 2147483646) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 1) (<= 0 ~front~0)) (= |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| 0)) (or (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 0) (and (= |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| 1) (<= ~front~0 2147483646) (<= 0 ~front~0))) (<= ~n~0 2147483647)), Black: 2372#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |ULTIMATE.start_create_fresh_int_array_~i~0#1| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~i~0#1| 0) (= ~sum~0 0) (<= ~front~0 ~back~0) (= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1) (<= ~element~0 2147483647) (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet19#1| 2147483647) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 2380#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647) (<= |ULTIMATE.start_create_fresh_int_array_~i~0#1| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 1)))) (= ~sum~0 0) (<= ~front~0 ~back~0) (= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1) (<= ~element~0 2147483647) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 2386#(and (<= (+ ~front~0 ~n~0) (+ ~back~0 1)) (not (= |ULTIMATE.start_main_#t~ret10#1.base| |ULTIMATE.start_main_~#t2~0#1.base|)) (not (= |ULTIMATE.start_main_#t~ret10#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 0) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 1)) (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret10#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 4) |ULTIMATE.start_main_#t~ret10#1.offset|)) 2147483647))) (= ~sum~0 0) (= |ULTIMATE.start_main_#t~ret10#1.offset| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret10#1.base|) 0) 2147483647)), Black: 812#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~0#1| 0)), Black: 1714#(and (or (and (= ~sum~0 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 2147483647)) (not (= (+ (* ~front~0 4) ~queue~0.offset) 0))) (= ~queue~0.offset 0) (<= (+ (* ~front~0 4) ~queue~0.offset) 0)), Black: 2406#(and (<= |thread1Thread1of1ForFork0_#t~mem1#1| 2147483647) (= ~sum~0 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 2147483647) (<= 0 ~front~0) (<= ~element~0 2147483647) (= ~queue~0.offset 0) (<= (+ (* ~front~0 4) ~queue~0.offset) 0)), 1693#true, Black: 2370#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~0#1| 0) (= ~sum~0 0) (<= ~front~0 ~back~0) (= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1) (<= ~element~0 2147483647) (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet19#1| 2147483647) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 2391#(and (or (<= (+ ~front~0 ~n~0) (+ ~back~0 1)) (<= (+ (* ~front~0 4) ~queue~0.offset) 0)) (<= ~sum~0 0) (or (and (= ~sum~0 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 2147483647)) (not (= (+ (* ~front~0 4) ~queue~0.offset) 0))) (not (= ~queue~0.base |ULTIMATE.start_main_~#t2~0#1.base|)) (= ~queue~0.offset 0) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 4) ~queue~0.offset)) 2147483647) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 1))))), 1638#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~0#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| 2147483647) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| 2147483647) (<= ~n~0 2147483647)), Black: 2395#(and (<= ~sum~0 0) (or (and (= ~sum~0 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 2147483647)) (not (= (+ (* ~front~0 4) ~queue~0.offset) 0))) (= ~queue~0.offset 0) (<= (+ (* ~front~0 4) ~queue~0.offset) 0) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 4) ~queue~0.offset)) 2147483647) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 1))))), Black: 2367#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~0#1| 0) (= ~sum~0 0) (<= ~front~0 ~back~0) (= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1) (<= ~element~0 2147483647) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 1717#(and (= ~sum~0 0) (<= (select (select |#memory_int| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset)) 2147483647) (<= 0 ~front~0) (= ~queue~0.offset 0) (<= (+ (* ~front~0 4) ~queue~0.offset) 0)), Black: 2382#(and (<= (+ ~front~0 ~n~0) (+ ~back~0 1)) (= ~sum~0 0) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 0) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 1)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~0#1_16| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 166#true, Black: 2428#(= |thread2Thread1of1ForFork1_~flag~0#1| 1)]) [2022-11-18 20:35:02,665 INFO L383 tUnfolder$Statistics]: this new event has 110 ancestors and is cut-off event [2022-11-18 20:35:02,665 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-11-18 20:35:02,666 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-11-18 20:35:02,666 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-11-18 20:35:05,889 INFO L130 PetriNetUnfolder]: 3863/14012 cut-off events. [2022-11-18 20:35:05,889 INFO L131 PetriNetUnfolder]: For 16340/17252 co-relation queries the response was YES. [2022-11-18 20:35:06,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37046 conditions, 14012 events. 3863/14012 cut-off events. For 16340/17252 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 140436 event pairs, 1293 based on Foata normal form. 939/14272 useless extension candidates. Maximal degree in co-relation 25364. Up to 5152 conditions per place. [2022-11-18 20:35:06,098 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 70 selfloop transitions, 4 changer transitions 1/255 dead transitions. [2022-11-18 20:35:06,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 255 transitions, 1553 flow [2022-11-18 20:35:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:35:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2022-11-18 20:35:06,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8646496815286624 [2022-11-18 20:35:06,102 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2022-11-18 20:35:06,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2022-11-18 20:35:06,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:06,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2022-11-18 20:35:06,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,107 INFO L175 Difference]: Start difference. First operand has 231 places, 306 transitions, 1785 flow. Second operand 4 states and 543 transitions. [2022-11-18 20:35:06,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 255 transitions, 1553 flow [2022-11-18 20:35:06,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 255 transitions, 1369 flow, removed 60 selfloop flow, removed 11 redundant places. [2022-11-18 20:35:06,211 INFO L231 Difference]: Finished difference. Result has 224 places, 252 transitions, 1221 flow [2022-11-18 20:35:06,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1221, PETRI_PLACES=224, PETRI_TRANSITIONS=252} [2022-11-18 20:35:06,213 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 91 predicate places. [2022-11-18 20:35:06,213 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 252 transitions, 1221 flow [2022-11-18 20:35:06,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:06,214 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:06,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:35:06,215 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:35:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash 429256682, now seen corresponding path program 1 times [2022-11-18 20:35:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:06,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397767233] [2022-11-18 20:35:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:35:06,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:06,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397767233] [2022-11-18 20:35:06,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397767233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:06,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308216916] [2022-11-18 20:35:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:06,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:06,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:06,898 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:06,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:35:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:35:07,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:35:07,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:35:08,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308216916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:08,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:08,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-11-18 20:35:08,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282009749] [2022-11-18 20:35:08,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:08,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:35:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:08,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:35:08,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1117, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:35:08,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 157 [2022-11-18 20:35:08,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 252 transitions, 1221 flow. Second operand has 36 states, 36 states have (on average 101.16666666666667) internal successors, (3642), 36 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:08,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:08,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 157 [2022-11-18 20:35:08,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:15,196 INFO L130 PetriNetUnfolder]: 5253/15584 cut-off events. [2022-11-18 20:35:15,196 INFO L131 PetriNetUnfolder]: For 17468/17637 co-relation queries the response was YES. [2022-11-18 20:35:15,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42278 conditions, 15584 events. 5253/15584 cut-off events. For 17468/17637 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 150261 event pairs, 1715 based on Foata normal form. 58/14958 useless extension candidates. Maximal degree in co-relation 26595. Up to 6086 conditions per place. [2022-11-18 20:35:15,409 INFO L137 encePairwiseOnDemand]: 137/157 looper letters, 125 selfloop transitions, 19 changer transitions 137/370 dead transitions. [2022-11-18 20:35:15,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 370 transitions, 2376 flow [2022-11-18 20:35:15,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:35:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 20:35:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2780 transitions. [2022-11-18 20:35:15,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6558150507195093 [2022-11-18 20:35:15,415 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2780 transitions. [2022-11-18 20:35:15,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2780 transitions. [2022-11-18 20:35:15,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:15,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2780 transitions. [2022-11-18 20:35:15,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 102.96296296296296) internal successors, (2780), 27 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 157.0) internal successors, (4396), 28 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,433 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 157.0) internal successors, (4396), 28 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,434 INFO L175 Difference]: Start difference. First operand has 224 places, 252 transitions, 1221 flow. Second operand 27 states and 2780 transitions. [2022-11-18 20:35:15,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 370 transitions, 2376 flow [2022-11-18 20:35:15,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 370 transitions, 2371 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-18 20:35:15,500 INFO L231 Difference]: Finished difference. Result has 263 places, 202 transitions, 1017 flow [2022-11-18 20:35:15,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1017, PETRI_PLACES=263, PETRI_TRANSITIONS=202} [2022-11-18 20:35:15,501 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 130 predicate places. [2022-11-18 20:35:15,501 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 202 transitions, 1017 flow [2022-11-18 20:35:15,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 101.16666666666667) internal successors, (3642), 36 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:15,504 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:15,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:15,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:35:15,712 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:35:15,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash 763453216, now seen corresponding path program 2 times [2022-11-18 20:35:15,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:15,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996149145] [2022-11-18 20:35:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:15,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:35:16,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:16,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996149145] [2022-11-18 20:35:16,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996149145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:16,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707586653] [2022-11-18 20:35:16,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:35:16,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:16,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:16,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:16,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:35:17,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:35:17,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:17,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 20:35:17,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:17,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:35:18,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:35:18,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:35:19,900 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-18 20:35:19,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-18 20:35:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:20,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:23,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:23,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2022-11-18 20:35:23,358 INFO L321 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-11-18 20:35:23,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 144 [2022-11-18 20:35:23,372 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-18 20:35:23,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 109 [2022-11-18 20:35:23,387 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-18 20:35:23,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 75 [2022-11-18 20:35:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:24,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707586653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:24,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:24,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 31, 28] total 71 [2022-11-18 20:35:24,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256025146] [2022-11-18 20:35:24,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:24,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-18 20:35:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-18 20:35:24,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=4652, Unknown=25, NotChecked=0, Total=5112 [2022-11-18 20:35:24,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2022-11-18 20:35:24,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 202 transitions, 1017 flow. Second operand has 72 states, 72 states have (on average 69.20833333333333) internal successors, (4983), 72 states have internal predecessors, (4983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:24,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:24,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2022-11-18 20:35:24,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:52,560 INFO L130 PetriNetUnfolder]: 17741/40275 cut-off events. [2022-11-18 20:35:52,561 INFO L131 PetriNetUnfolder]: For 115135/115559 co-relation queries the response was YES. [2022-11-18 20:35:52,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140341 conditions, 40275 events. 17741/40275 cut-off events. For 115135/115559 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 412826 event pairs, 1654 based on Foata normal form. 456/39264 useless extension candidates. Maximal degree in co-relation 71749. Up to 18275 conditions per place. [2022-11-18 20:35:53,379 INFO L137 encePairwiseOnDemand]: 115/157 looper letters, 558 selfloop transitions, 409 changer transitions 23/1045 dead transitions. [2022-11-18 20:35:53,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 1045 transitions, 8216 flow [2022-11-18 20:35:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-18 20:35:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2022-11-18 20:35:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 8525 transitions. [2022-11-18 20:35:53,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45629716854894825 [2022-11-18 20:35:53,405 INFO L72 ComplementDD]: Start complementDD. Operand 119 states and 8525 transitions. [2022-11-18 20:35:53,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 8525 transitions. [2022-11-18 20:35:53,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:53,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 119 states and 8525 transitions. [2022-11-18 20:35:53,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 120 states, 119 states have (on average 71.63865546218487) internal successors, (8525), 119 states have internal predecessors, (8525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:53,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 120 states, 120 states have (on average 157.0) internal successors, (18840), 120 states have internal predecessors, (18840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:53,473 INFO L81 ComplementDD]: Finished complementDD. Result has 120 states, 120 states have (on average 157.0) internal successors, (18840), 120 states have internal predecessors, (18840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:53,474 INFO L175 Difference]: Start difference. First operand has 263 places, 202 transitions, 1017 flow. Second operand 119 states and 8525 transitions. [2022-11-18 20:35:53,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 1045 transitions, 8216 flow [2022-11-18 20:35:54,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 1045 transitions, 7430 flow, removed 380 selfloop flow, removed 32 redundant places. [2022-11-18 20:35:54,101 INFO L231 Difference]: Finished difference. Result has 362 places, 602 transitions, 4926 flow [2022-11-18 20:35:54,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=119, PETRI_FLOW=4926, PETRI_PLACES=362, PETRI_TRANSITIONS=602} [2022-11-18 20:35:54,102 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 229 predicate places. [2022-11-18 20:35:54,103 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 602 transitions, 4926 flow [2022-11-18 20:35:54,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 69.20833333333333) internal successors, (4983), 72 states have internal predecessors, (4983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:54,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:54,105 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:54,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 20:35:54,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:35:54,311 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:35:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash 125420334, now seen corresponding path program 3 times [2022-11-18 20:35:54,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:54,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730186091] [2022-11-18 20:35:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:54,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:57,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:57,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730186091] [2022-11-18 20:35:57,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730186091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:57,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401651518] [2022-11-18 20:35:57,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:35:57,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:57,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:57,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:57,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:35:58,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:35:58,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:58,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:35:58,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:58,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2022-11-18 20:35:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:35:58,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:59,067 INFO L321 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-11-18 20:35:59,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-11-18 20:35:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:35:59,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401651518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:59,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:59,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10, 10] total 47 [2022-11-18 20:35:59,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188146971] [2022-11-18 20:35:59,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:59,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:35:59,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:59,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:35:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2065, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:35:59,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 157 [2022-11-18 20:35:59,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 602 transitions, 4926 flow. Second operand has 48 states, 48 states have (on average 76.72916666666667) internal successors, (3683), 48 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:59,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:59,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 157 [2022-11-18 20:35:59,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:36:31,079 INFO L130 PetriNetUnfolder]: 24398/56346 cut-off events. [2022-11-18 20:36:31,079 INFO L131 PetriNetUnfolder]: For 513932/515085 co-relation queries the response was YES. [2022-11-18 20:36:31,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281674 conditions, 56346 events. 24398/56346 cut-off events. For 513932/515085 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 615516 event pairs, 3142 based on Foata normal form. 511/54935 useless extension candidates. Maximal degree in co-relation 272574. Up to 25211 conditions per place. [2022-11-18 20:36:32,451 INFO L137 encePairwiseOnDemand]: 122/157 looper letters, 990 selfloop transitions, 435 changer transitions 0/1483 dead transitions. [2022-11-18 20:36:32,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1483 transitions, 16559 flow [2022-11-18 20:36:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-11-18 20:36:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2022-11-18 20:36:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 9132 transitions. [2022-11-18 20:36:32,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5014276301339776 [2022-11-18 20:36:32,467 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 9132 transitions. [2022-11-18 20:36:32,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 9132 transitions. [2022-11-18 20:36:32,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:36:32,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 9132 transitions. [2022-11-18 20:36:32,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 117 states, 116 states have (on average 78.72413793103448) internal successors, (9132), 116 states have internal predecessors, (9132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:32,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 117 states, 117 states have (on average 157.0) internal successors, (18369), 117 states have internal predecessors, (18369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:32,511 INFO L81 ComplementDD]: Finished complementDD. Result has 117 states, 117 states have (on average 157.0) internal successors, (18369), 117 states have internal predecessors, (18369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:32,511 INFO L175 Difference]: Start difference. First operand has 362 places, 602 transitions, 4926 flow. Second operand 116 states and 9132 transitions. [2022-11-18 20:36:32,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1483 transitions, 16559 flow [2022-11-18 20:36:43,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1483 transitions, 15642 flow, removed 349 selfloop flow, removed 26 redundant places. [2022-11-18 20:36:43,787 INFO L231 Difference]: Finished difference. Result has 511 places, 832 transitions, 8176 flow [2022-11-18 20:36:43,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=4497, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=116, PETRI_FLOW=8176, PETRI_PLACES=511, PETRI_TRANSITIONS=832} [2022-11-18 20:36:43,789 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 378 predicate places. [2022-11-18 20:36:43,789 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 832 transitions, 8176 flow [2022-11-18 20:36:43,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 76.72916666666667) internal successors, (3683), 48 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:43,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:36:43,790 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:43,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:43,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:36:43,995 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-18 20:36:43,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:43,995 INFO L85 PathProgramCache]: Analyzing trace with hash 416910160, now seen corresponding path program 1 times [2022-11-18 20:36:43,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:43,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13165257] [2022-11-18 20:36:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:43,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:36:44,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:44,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13165257] [2022-11-18 20:36:44,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13165257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:44,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40298759] [2022-11-18 20:36:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:44,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:44,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:44,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:44,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83fc62a9-51cb-45c6-9967-fe28d99bfc13/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:36:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:44,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 20:36:44,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:47,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:36:47,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 15 [2022-11-18 20:36:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:47,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:49,372 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:36:49,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 70 [2022-11-18 20:36:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:51,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40298759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:51,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:51,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 27, 27] total 66 [2022-11-18 20:36:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338873605] [2022-11-18 20:36:51,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-18 20:36:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-18 20:36:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=3827, Unknown=0, NotChecked=0, Total=4422 [2022-11-18 20:36:51,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 157 [2022-11-18 20:36:51,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 832 transitions, 8176 flow. Second operand has 67 states, 67 states have (on average 83.16417910447761) internal successors, (5572), 67 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:51,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:51,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 157 [2022-11-18 20:36:51,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand