./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.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_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/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_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/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_9340c91b-fa6c-4a49-9594-8b3b4c893879/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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --- 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 20:07:52,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:07:52,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:07:52,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:07:52,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:07:52,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:07:52,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:07:52,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:07:52,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:07:52,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:07:52,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:07:52,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:07:52,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:07:52,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:07:52,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:07:52,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:07:52,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:07:52,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:07:52,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:07:52,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:07:52,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:07:52,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:07:52,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:07:52,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:07:52,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:07:52,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:07:52,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:07:52,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:07:52,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:07:52,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:07:52,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:07:52,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:07:52,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:07:52,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:07:52,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:07:52,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:07:52,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:07:52,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:07:52,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:07:52,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:07:52,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:07:52,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:07:52,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:07:52,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:07:52,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:07:52,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:07:52,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:07:52,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:07:52,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:07:52,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:07:52,918 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:07:52,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:07:52,919 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:07:52,919 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:07:52,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:07:52,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:07:52,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:07:52,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:07:52,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:07:52,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:07:52,921 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:07:52,921 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:07:52,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:07:52,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:07:52,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:07:52,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:07:52,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:07:52,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:07:52,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:52,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:07:52,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:07:52,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:07:52,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:07:52,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:07:52,925 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:07:52,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:07:52,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:07:52,926 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_9340c91b-fa6c-4a49-9594-8b3b4c893879/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 [2022-11-18 20:07:53,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:07:53,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:07:53,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:07:53,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:07:53,246 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:07:53,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-11-18 20:07:53,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/data/db636032b/d24fe139518b4c01ad62cdd3e3446b1e/FLAGadd1ac47c [2022-11-18 20:07:53,963 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:07:53,963 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2022-11-18 20:07:53,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/data/db636032b/d24fe139518b4c01ad62cdd3e3446b1e/FLAGadd1ac47c [2022-11-18 20:07:54,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/data/db636032b/d24fe139518b4c01ad62cdd3e3446b1e [2022-11-18 20:07:54,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:07:54,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:07:54,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:54,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:07:54,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:07:54,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2fa089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54, skipping insertion in model container [2022-11-18 20:07:54,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:07:54,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:07:54,595 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_9340c91b-fa6c-4a49-9594-8b3b4c893879/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-11-18 20:07:54,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:54,626 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:07:54,655 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_9340c91b-fa6c-4a49-9594-8b3b4c893879/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-11-18 20:07:54,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:54,675 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:07:54,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54 WrapperNode [2022-11-18 20:07:54,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:54,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:54,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:07:54,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:07:54,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,745 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 341 [2022-11-18 20:07:54,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:54,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:07:54,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:07:54,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:07:54,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,809 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:07:54,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:07:54,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:07:54,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:07:54,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (1/1) ... [2022-11-18 20:07:54,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:54,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:54,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:07:54,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:07:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:07:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:07:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:07:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:07:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:07:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:07:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:07:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:07:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:07:54,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:07:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:07:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:07:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:07:54,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:07:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:07:54,934 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 20:07:55,117 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:07:55,120 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:07:55,814 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:07:55,828 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:07:55,829 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:07:55,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:55 BoogieIcfgContainer [2022-11-18 20:07:55,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:07:55,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:07:55,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:07:55,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:07:55,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:07:54" (1/3) ... [2022-11-18 20:07:55,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34928310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:55, skipping insertion in model container [2022-11-18 20:07:55,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:54" (2/3) ... [2022-11-18 20:07:55,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34928310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:55, skipping insertion in model container [2022-11-18 20:07:55,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:55" (3/3) ... [2022-11-18 20:07:55,844 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2022-11-18 20:07:55,853 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:07:55,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:07:55,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-11-18 20:07:55,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:07:56,044 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:07:56,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 459 transitions, 942 flow [2022-11-18 20:07:56,392 INFO L130 PetriNetUnfolder]: 35/456 cut-off events. [2022-11-18 20:07:56,393 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:07:56,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 456 events. 35/456 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1067 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 341. Up to 3 conditions per place. [2022-11-18 20:07:56,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 459 transitions, 942 flow [2022-11-18 20:07:56,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 427 transitions, 869 flow [2022-11-18 20:07:56,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:07:56,466 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;@69da551e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:07:56,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2022-11-18 20:07:56,494 INFO L130 PetriNetUnfolder]: 3/70 cut-off events. [2022-11-18 20:07:56,494 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:07:56,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:56,496 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] [2022-11-18 20:07:56,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 20:07:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:56,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1777577551, now seen corresponding path program 1 times [2022-11-18 20:07:56,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:56,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358818631] [2022-11-18 20:07:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:56,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:57,000 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 20:07:57,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:57,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358818631] [2022-11-18 20:07:57,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358818631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:57,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:57,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:07:57,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404184555] [2022-11-18 20:07:57,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:57,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:07:57,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:07:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:07:57,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 459 [2022-11-18 20:07:57,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 427 transitions, 869 flow. Second operand has 4 states, 4 states have (on average 397.5) internal successors, (1590), 4 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:57,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:57,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 459 [2022-11-18 20:07:57,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:57,531 INFO L130 PetriNetUnfolder]: 29/718 cut-off events. [2022-11-18 20:07:57,531 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:07:57,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 718 events. 29/718 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2911 event pairs, 0 based on Foata normal form. 36/640 useless extension candidates. Maximal degree in co-relation 618. Up to 44 conditions per place. [2022-11-18 20:07:57,550 INFO L137 encePairwiseOnDemand]: 421/459 looper letters, 58 selfloop transitions, 14 changer transitions 6/440 dead transitions. [2022-11-18 20:07:57,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 440 transitions, 1054 flow [2022-11-18 20:07:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:07:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:07:57,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2088 transitions. [2022-11-18 20:07:57,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9098039215686274 [2022-11-18 20:07:57,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2088 transitions. [2022-11-18 20:07:57,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2088 transitions. [2022-11-18 20:07:57,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:57,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2088 transitions. [2022-11-18 20:07:57,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 417.6) internal successors, (2088), 5 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:57,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 459.0) internal successors, (2754), 6 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:57,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 459.0) internal successors, (2754), 6 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:57,623 INFO L175 Difference]: Start difference. First operand has 404 places, 427 transitions, 869 flow. Second operand 5 states and 2088 transitions. [2022-11-18 20:07:57,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 440 transitions, 1054 flow [2022-11-18 20:07:57,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 440 transitions, 1036 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:07:57,639 INFO L231 Difference]: Finished difference. Result has 406 places, 414 transitions, 916 flow [2022-11-18 20:07:57,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=916, PETRI_PLACES=406, PETRI_TRANSITIONS=414} [2022-11-18 20:07:57,645 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 2 predicate places. [2022-11-18 20:07:57,646 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 414 transitions, 916 flow [2022-11-18 20:07:57,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 397.5) internal successors, (1590), 4 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:57,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:57,650 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:57,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:07:57,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 20:07:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1218740394, now seen corresponding path program 1 times [2022-11-18 20:07:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:57,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139846036] [2022-11-18 20:07:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:57,927 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 20:07:57,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:57,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139846036] [2022-11-18 20:07:57,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139846036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:57,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701292753] [2022-11-18 20:07:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:57,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:57,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:57,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:57,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:07:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:58,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:58,158 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 20:07:58,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:58,228 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 20:07:58,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701292753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:58,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:58,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:07:58,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582938742] [2022-11-18 20:07:58,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:58,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:07:58,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:58,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:07:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:07:58,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 459 [2022-11-18 20:07:58,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 414 transitions, 916 flow. Second operand has 12 states, 12 states have (on average 398.6666666666667) internal successors, (4784), 12 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:58,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:58,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 459 [2022-11-18 20:07:58,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:59,245 INFO L130 PetriNetUnfolder]: 71/1645 cut-off events. [2022-11-18 20:07:59,246 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 20:07:59,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 1645 events. 71/1645 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10231 event pairs, 0 based on Foata normal form. 9/1399 useless extension candidates. Maximal degree in co-relation 1176. Up to 35 conditions per place. [2022-11-18 20:07:59,276 INFO L137 encePairwiseOnDemand]: 436/459 looper letters, 109 selfloop transitions, 62 changer transitions 0/533 dead transitions. [2022-11-18 20:07:59,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 533 transitions, 1598 flow [2022-11-18 20:07:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:07:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:07:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7308 transitions. [2022-11-18 20:07:59,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8845315904139434 [2022-11-18 20:07:59,291 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7308 transitions. [2022-11-18 20:07:59,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7308 transitions. [2022-11-18 20:07:59,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:59,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7308 transitions. [2022-11-18 20:07:59,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 406.0) internal successors, (7308), 18 states have internal predecessors, (7308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:59,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 459.0) internal successors, (8721), 19 states have internal predecessors, (8721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:59,336 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 459.0) internal successors, (8721), 19 states have internal predecessors, (8721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:59,336 INFO L175 Difference]: Start difference. First operand has 406 places, 414 transitions, 916 flow. Second operand 18 states and 7308 transitions. [2022-11-18 20:07:59,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 533 transitions, 1598 flow [2022-11-18 20:07:59,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 533 transitions, 1590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:07:59,350 INFO L231 Difference]: Finished difference. Result has 420 places, 456 transitions, 1278 flow [2022-11-18 20:07:59,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1278, PETRI_PLACES=420, PETRI_TRANSITIONS=456} [2022-11-18 20:07:59,352 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 16 predicate places. [2022-11-18 20:07:59,352 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 456 transitions, 1278 flow [2022-11-18 20:07:59,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 398.6666666666667) internal successors, (4784), 12 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:59,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:59,356 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:59,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:59,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:59,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 20:07:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash -873752407, now seen corresponding path program 1 times [2022-11-18 20:07:59,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:59,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404170874] [2022-11-18 20:07:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:59,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:59,828 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 20:07:59,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:59,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404170874] [2022-11-18 20:07:59,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404170874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:59,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261266461] [2022-11-18 20:07:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:59,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:59,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:59,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:07:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:59,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:07:59,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:00,053 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 20:08:00,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:08:00,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261266461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:00,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:08:00,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:08:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177265653] [2022-11-18 20:08:00,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:00,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:08:00,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:08:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:00,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 459 [2022-11-18 20:08:00,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 456 transitions, 1278 flow. Second operand has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:00,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:00,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 459 [2022-11-18 20:08:00,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:00,740 INFO L130 PetriNetUnfolder]: 71/1633 cut-off events. [2022-11-18 20:08:00,740 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-18 20:08:00,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1979 conditions, 1633 events. 71/1633 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10134 event pairs, 0 based on Foata normal form. 12/1390 useless extension candidates. Maximal degree in co-relation 1538. Up to 68 conditions per place. [2022-11-18 20:08:00,782 INFO L137 encePairwiseOnDemand]: 442/459 looper letters, 59 selfloop transitions, 43 changer transitions 0/464 dead transitions. [2022-11-18 20:08:00,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 464 transitions, 1453 flow [2022-11-18 20:08:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:08:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:08:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2844 transitions. [2022-11-18 20:08:00,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8851540616246498 [2022-11-18 20:08:00,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2844 transitions. [2022-11-18 20:08:00,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2844 transitions. [2022-11-18 20:08:00,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:00,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2844 transitions. [2022-11-18 20:08:00,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 406.2857142857143) internal successors, (2844), 7 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:00,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 459.0) internal successors, (3672), 8 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:00,806 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 459.0) internal successors, (3672), 8 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:00,806 INFO L175 Difference]: Start difference. First operand has 420 places, 456 transitions, 1278 flow. Second operand 7 states and 2844 transitions. [2022-11-18 20:08:00,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 464 transitions, 1453 flow [2022-11-18 20:08:00,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 464 transitions, 1337 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 20:08:00,822 INFO L231 Difference]: Finished difference. Result has 414 places, 444 transitions, 1167 flow [2022-11-18 20:08:00,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1167, PETRI_PLACES=414, PETRI_TRANSITIONS=444} [2022-11-18 20:08:00,825 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 10 predicate places. [2022-11-18 20:08:00,826 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 444 transitions, 1167 flow [2022-11-18 20:08:00,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:00,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:00,827 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:00,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:01,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:01,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 20:08:01,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash -51002609, now seen corresponding path program 2 times [2022-11-18 20:08:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:01,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796001006] [2022-11-18 20:08:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:01,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:01,409 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 20:08:01,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:01,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796001006] [2022-11-18 20:08:01,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796001006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:01,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114602891] [2022-11-18 20:08:01,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:08:01,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:01,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:01,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:01,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:08:01,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:08:01,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:01,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:08:01,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:01,763 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 20:08:01,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:01,962 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 20:08:01,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114602891] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:01,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:08:01,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:08:01,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573930911] [2022-11-18 20:08:01,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:01,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:08:01,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:08:01,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:08:01,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 459 [2022-11-18 20:08:01,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 444 transitions, 1167 flow. Second operand has 18 states, 18 states have (on average 365.6111111111111) internal successors, (6581), 18 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:02,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:02,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 459 [2022-11-18 20:08:02,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:07,522 INFO L130 PetriNetUnfolder]: 1884/14010 cut-off events. [2022-11-18 20:08:07,522 INFO L131 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2022-11-18 20:08:07,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17613 conditions, 14010 events. 1884/14010 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 165852 event pairs, 1225 based on Foata normal form. 6/10936 useless extension candidates. Maximal degree in co-relation 14544. Up to 448 conditions per place. [2022-11-18 20:08:07,854 INFO L137 encePairwiseOnDemand]: 431/459 looper letters, 248 selfloop transitions, 97 changer transitions 0/673 dead transitions. [2022-11-18 20:08:07,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 673 transitions, 2452 flow [2022-11-18 20:08:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:08:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 20:08:07,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 18089 transitions. [2022-11-18 20:08:07,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8042772664621404 [2022-11-18 20:08:07,893 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 18089 transitions. [2022-11-18 20:08:07,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 18089 transitions. [2022-11-18 20:08:07,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:07,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 18089 transitions. [2022-11-18 20:08:07,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 369.16326530612247) internal successors, (18089), 49 states have internal predecessors, (18089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:07,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 459.0) internal successors, (22950), 50 states have internal predecessors, (22950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:07,992 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 459.0) internal successors, (22950), 50 states have internal predecessors, (22950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:07,992 INFO L175 Difference]: Start difference. First operand has 414 places, 444 transitions, 1167 flow. Second operand 49 states and 18089 transitions. [2022-11-18 20:08:07,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 673 transitions, 2452 flow [2022-11-18 20:08:07,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 673 transitions, 2383 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:08:08,012 INFO L231 Difference]: Finished difference. Result has 460 places, 484 transitions, 1510 flow [2022-11-18 20:08:08,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1510, PETRI_PLACES=460, PETRI_TRANSITIONS=484} [2022-11-18 20:08:08,014 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 56 predicate places. [2022-11-18 20:08:08,014 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 484 transitions, 1510 flow [2022-11-18 20:08:08,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 365.6111111111111) internal successors, (6581), 18 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:08,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:08,017 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, 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 20:08:08,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:08,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9340c91b-fa6c-4a49-9594-8b3b4c893879/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:08,224 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 20:08:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2060217344, now seen corresponding path program 1 times [2022-11-18 20:08:08,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:08,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91653429] [2022-11-18 20:08:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:08,657 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 20:08:08,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:08,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91653429] [2022-11-18 20:08:08,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91653429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:08,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:08,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:08:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733417080] [2022-11-18 20:08:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:08:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:08:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:08:08,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 459 [2022-11-18 20:08:08,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 484 transitions, 1510 flow. Second operand has 11 states, 11 states have (on average 341.3636363636364) internal successors, (3755), 11 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:08,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:08,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 459 [2022-11-18 20:08:08,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:31,764 INFO L130 PetriNetUnfolder]: 20224/129292 cut-off events. [2022-11-18 20:08:31,764 INFO L131 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2022-11-18 20:08:32,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154604 conditions, 129292 events. 20224/129292 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 2183396 event pairs, 13594 based on Foata normal form. 0/100333 useless extension candidates. Maximal degree in co-relation 132487. Up to 10797 conditions per place. [2022-11-18 20:08:33,395 INFO L137 encePairwiseOnDemand]: 441/459 looper letters, 234 selfloop transitions, 35 changer transitions 0/604 dead transitions. [2022-11-18 20:08:33,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 604 transitions, 2531 flow [2022-11-18 20:08:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:08:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:08:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5896 transitions. [2022-11-18 20:08:33,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.755606817890555 [2022-11-18 20:08:33,406 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5896 transitions. [2022-11-18 20:08:33,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5896 transitions. [2022-11-18 20:08:33,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:33,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5896 transitions. [2022-11-18 20:08:33,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 346.8235294117647) internal successors, (5896), 17 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 459.0) internal successors, (8262), 18 states have internal predecessors, (8262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,436 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 459.0) internal successors, (8262), 18 states have internal predecessors, (8262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,437 INFO L175 Difference]: Start difference. First operand has 460 places, 484 transitions, 1510 flow. Second operand 17 states and 5896 transitions. [2022-11-18 20:08:33,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 604 transitions, 2531 flow [2022-11-18 20:08:33,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 604 transitions, 2350 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-18 20:08:33,452 INFO L231 Difference]: Finished difference. Result has 470 places, 498 transitions, 1589 flow [2022-11-18 20:08:33,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1589, PETRI_PLACES=470, PETRI_TRANSITIONS=498} [2022-11-18 20:08:33,456 INFO L288 CegarLoopForPetriNet]: 404 programPoint places, 66 predicate places. [2022-11-18 20:08:33,456 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 498 transitions, 1589 flow [2022-11-18 20:08:33,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 341.3636363636364) internal successors, (3755), 11 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:33,458 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, 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 20:08:33,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:08:33,458 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2022-11-18 20:08:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:33,459 INFO L85 PathProgramCache]: Analyzing trace with hash -557770679, now seen corresponding path program 1 times [2022-11-18 20:08:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:33,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533211190] [2022-11-18 20:08:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:33,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:33,686 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 20:08:33,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:33,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533211190] [2022-11-18 20:08:33,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533211190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:33,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:33,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:08:33,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656062335] [2022-11-18 20:08:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:33,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:08:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:33,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:08:33,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:08:33,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 459 [2022-11-18 20:08:33,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 498 transitions, 1589 flow. Second operand has 8 states, 8 states have (on average 372.25) internal successors, (2978), 8 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:33,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:33,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 459 [2022-11-18 20:08:33,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand