./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN --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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- 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-6b4ec56 [2022-11-20 11:12:35,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:12:35,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:12:35,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:12:35,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:12:35,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:12:35,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:12:35,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:12:35,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:12:35,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:12:35,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:12:35,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:12:35,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:12:35,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:12:35,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:12:35,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:12:35,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:12:35,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:12:35,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:12:35,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:12:35,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:12:35,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:12:35,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:12:35,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:12:35,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:12:35,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:12:35,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:12:35,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:12:35,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:12:35,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:12:35,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:12:35,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:12:35,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:12:35,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:12:35,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:12:35,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:12:35,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:12:35,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:12:35,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:12:35,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:12:35,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:12:35,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:12:35,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:12:35,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:12:35,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:12:35,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:12:35,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:12:35,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:12:35,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:12:35,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:12:35,794 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:12:35,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:12:35,796 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:12:35,797 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:12:35,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:12:35,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:12:35,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:12:35,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:12:35,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:12:35,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:12:35,799 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:12:35,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:12:35,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:12:35,800 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:12:35,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:12:35,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:12:35,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:12:35,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:12:35,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:35,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:12:35,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:12:35,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:12:35,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:12:35,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:12:35,803 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:12:35,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:12:35,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:12:35,804 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_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-11-20 11:12:36,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:12:36,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:12:36,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:12:36,184 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:12:36,184 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:12:36,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-20 11:12:39,436 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:12:39,746 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:12:39,747 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-20 11:12:39,767 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/data/9520bad34/1ab11c469ea04d0197e140032808b555/FLAGca120dd51 [2022-11-20 11:12:39,792 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/data/9520bad34/1ab11c469ea04d0197e140032808b555 [2022-11-20 11:12:39,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:12:39,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:12:39,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:39,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:12:39,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:12:39,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:39" (1/1) ... [2022-11-20 11:12:39,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5133460f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:39, skipping insertion in model container [2022-11-20 11:12:39,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:39" (1/1) ... [2022-11-20 11:12:39,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:12:39,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:12:40,515 WARN L237 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_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-20 11:12:40,534 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:12:40,536 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:12:40,537 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:12:40,538 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:12:40,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:40,614 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:12:40,677 WARN L237 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_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-20 11:12:40,680 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:12:40,681 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:12:40,681 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:12:40,682 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:12:40,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:40,766 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:12:40,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40 WrapperNode [2022-11-20 11:12:40,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:40,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:40,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:12:40,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:12:40,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,845 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 237 [2022-11-20 11:12:40,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:40,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:12:40,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:12:40,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:12:40,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,916 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:12:40,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:12:40,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:12:40,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:12:40,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (1/1) ... [2022-11-20 11:12:40,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:40,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:40,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:12:41,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:12:41,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:12:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:12:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:12:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:12:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:12:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:12:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:12:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:12:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:12:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 11:12:41,032 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 11:12:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:12:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:12:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:12:41,035 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:12:41,299 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:12:41,301 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:12:41,728 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:12:41,739 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:12:41,739 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 11:12:41,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:41 BoogieIcfgContainer [2022-11-20 11:12:41,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:12:41,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:12:41,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:12:41,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:12:41,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:39" (1/3) ... [2022-11-20 11:12:41,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294457ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:41, skipping insertion in model container [2022-11-20 11:12:41,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:40" (2/3) ... [2022-11-20 11:12:41,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294457ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:41, skipping insertion in model container [2022-11-20 11:12:41,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:41" (3/3) ... [2022-11-20 11:12:41,780 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-11-20 11:12:41,788 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:12:41,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:12:41,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 11:12:41,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:12:41,919 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 11:12:41,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 284 transitions, 576 flow [2022-11-20 11:12:42,053 INFO L130 PetriNetUnfolder]: 28/301 cut-off events. [2022-11-20 11:12:42,054 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-20 11:12:42,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 301 events. 28/301 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 565 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 164. Up to 4 conditions per place. [2022-11-20 11:12:42,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 284 transitions, 576 flow [2022-11-20 11:12:42,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 281 transitions, 570 flow [2022-11-20 11:12:42,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:12:42,092 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;@34f9b027, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:12:42,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-20 11:12:42,104 INFO L130 PetriNetUnfolder]: 2/52 cut-off events. [2022-11-20 11:12:42,104 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:12:42,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:42,105 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] [2022-11-20 11:12:42,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1149107944, now seen corresponding path program 1 times [2022-11-20 11:12:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:42,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349991906] [2022-11-20 11:12:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:42,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:42,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:42,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179839228] [2022-11-20 11:12:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:42,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:42,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:42,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:42,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:12:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:42,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:12:42,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:42,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:12:42,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:42,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349991906] [2022-11-20 11:12:42,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:42,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179839228] [2022-11-20 11:12:42,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179839228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:42,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:42,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:12:42,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667074967] [2022-11-20 11:12:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:42,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:12:42,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:12:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:12:42,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 284 [2022-11-20 11:12:42,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 281 transitions, 570 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:42,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:42,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 284 [2022-11-20 11:12:42,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:42,948 INFO L130 PetriNetUnfolder]: 6/335 cut-off events. [2022-11-20 11:12:42,948 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-20 11:12:42,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 335 events. 6/335 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 583 event pairs, 0 based on Foata normal form. 22/324 useless extension candidates. Maximal degree in co-relation 241. Up to 17 conditions per place. [2022-11-20 11:12:42,953 INFO L137 encePairwiseOnDemand]: 259/284 looper letters, 23 selfloop transitions, 2 changer transitions 2/269 dead transitions. [2022-11-20 11:12:42,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 269 transitions, 596 flow [2022-11-20 11:12:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:12:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:12:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2022-11-20 11:12:42,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9284037558685446 [2022-11-20 11:12:42,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2022-11-20 11:12:42,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2022-11-20 11:12:42,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:42,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2022-11-20 11:12:43,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,018 INFO L175 Difference]: Start difference. First operand has 259 places, 281 transitions, 570 flow. Second operand 3 states and 791 transitions. [2022-11-20 11:12:43,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 269 transitions, 596 flow [2022-11-20 11:12:43,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 269 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:12:43,032 INFO L231 Difference]: Finished difference. Result has 261 places, 259 transitions, 540 flow [2022-11-20 11:12:43,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=261, PETRI_TRANSITIONS=259} [2022-11-20 11:12:43,040 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 2 predicate places. [2022-11-20 11:12:43,040 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 259 transitions, 540 flow [2022-11-20 11:12:43,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:43,042 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] [2022-11-20 11:12:43,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:43,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:43,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:43,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1262613442, now seen corresponding path program 1 times [2022-11-20 11:12:43,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:43,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384684398] [2022-11-20 11:12:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:43,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:43,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384684398] [2022-11-20 11:12:43,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384684398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:43,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:43,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073809900] [2022-11-20 11:12:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:12:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:12:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:12:43,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 284 [2022-11-20 11:12:43,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 259 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:43,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 284 [2022-11-20 11:12:43,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:43,699 INFO L130 PetriNetUnfolder]: 6/417 cut-off events. [2022-11-20 11:12:43,699 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 11:12:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 417 events. 6/417 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 797 event pairs, 0 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 338. Up to 22 conditions per place. [2022-11-20 11:12:43,702 INFO L137 encePairwiseOnDemand]: 279/284 looper letters, 17 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-11-20 11:12:43,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 265 transitions, 590 flow [2022-11-20 11:12:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:12:43,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:12:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2022-11-20 11:12:43,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9061032863849765 [2022-11-20 11:12:43,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2022-11-20 11:12:43,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2022-11-20 11:12:43,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:43,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2022-11-20 11:12:43,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,715 INFO L175 Difference]: Start difference. First operand has 261 places, 259 transitions, 540 flow. Second operand 3 states and 772 transitions. [2022-11-20 11:12:43,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 265 transitions, 590 flow [2022-11-20 11:12:43,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 265 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:12:43,724 INFO L231 Difference]: Finished difference. Result has 261 places, 260 transitions, 554 flow [2022-11-20 11:12:43,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=261, PETRI_TRANSITIONS=260} [2022-11-20 11:12:43,726 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 2 predicate places. [2022-11-20 11:12:43,726 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 260 transitions, 554 flow [2022-11-20 11:12:43,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:43,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:43,728 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:43,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:12:43,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:43,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:43,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1158637605, now seen corresponding path program 1 times [2022-11-20 11:12:43,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:43,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83096053] [2022-11-20 11:12:43,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:43,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:43,837 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:43,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427963585] [2022-11-20 11:12:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:43,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:43,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:43,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:43,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:12:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:44,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:12:44,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:44,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:12:44,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:44,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83096053] [2022-11-20 11:12:44,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:44,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427963585] [2022-11-20 11:12:44,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427963585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:44,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:44,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624240083] [2022-11-20 11:12:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:44,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:12:44,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:12:44,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:12:44,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-20 11:12:44,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 260 transitions, 554 flow. Second operand has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:44,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:44,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-20 11:12:44,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:44,431 INFO L130 PetriNetUnfolder]: 6/417 cut-off events. [2022-11-20 11:12:44,432 INFO L131 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2022-11-20 11:12:44,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 417 events. 6/417 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 801 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 367. Up to 30 conditions per place. [2022-11-20 11:12:44,435 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 23 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-20 11:12:44,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 269 transitions, 628 flow [2022-11-20 11:12:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:12:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:12:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1254 transitions. [2022-11-20 11:12:44,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830985915492958 [2022-11-20 11:12:44,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1254 transitions. [2022-11-20 11:12:44,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1254 transitions. [2022-11-20 11:12:44,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:44,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1254 transitions. [2022-11-20 11:12:44,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.8) internal successors, (1254), 5 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:44,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:44,453 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:44,453 INFO L175 Difference]: Start difference. First operand has 261 places, 260 transitions, 554 flow. Second operand 5 states and 1254 transitions. [2022-11-20 11:12:44,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 269 transitions, 628 flow [2022-11-20 11:12:44,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:12:44,462 INFO L231 Difference]: Finished difference. Result has 268 places, 263 transitions, 586 flow [2022-11-20 11:12:44,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=268, PETRI_TRANSITIONS=263} [2022-11-20 11:12:44,466 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 9 predicate places. [2022-11-20 11:12:44,466 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 263 transitions, 586 flow [2022-11-20 11:12:44,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:44,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:44,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:44,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:44,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 11:12:44,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:44,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1558026836, now seen corresponding path program 1 times [2022-11-20 11:12:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:44,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945001563] [2022-11-20 11:12:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:44,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:44,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:44,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587234834] [2022-11-20 11:12:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:44,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:44,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:44,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:44,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:12:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:44,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:12:44,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:45,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:12:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:45,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945001563] [2022-11-20 11:12:45,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:45,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587234834] [2022-11-20 11:12:45,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587234834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:45,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:45,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90258952] [2022-11-20 11:12:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:45,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:12:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:45,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:12:45,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:12:45,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-20 11:12:45,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 263 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:45,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:45,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-20 11:12:45,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:45,257 INFO L130 PetriNetUnfolder]: 6/413 cut-off events. [2022-11-20 11:12:45,257 INFO L131 PetriNetUnfolder]: For 35/36 co-relation queries the response was YES. [2022-11-20 11:12:45,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 413 events. 6/413 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 786 event pairs, 0 based on Foata normal form. 4/395 useless extension candidates. Maximal degree in co-relation 379. Up to 28 conditions per place. [2022-11-20 11:12:45,264 INFO L137 encePairwiseOnDemand]: 280/284 looper letters, 16 selfloop transitions, 5 changer transitions 0/262 dead transitions. [2022-11-20 11:12:45,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 262 transitions, 626 flow [2022-11-20 11:12:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:12:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:12:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2022-11-20 11:12:45,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8794014084507042 [2022-11-20 11:12:45,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2022-11-20 11:12:45,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2022-11-20 11:12:45,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:45,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2022-11-20 11:12:45,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:45,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:45,279 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:45,279 INFO L175 Difference]: Start difference. First operand has 268 places, 263 transitions, 586 flow. Second operand 4 states and 999 transitions. [2022-11-20 11:12:45,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 262 transitions, 626 flow [2022-11-20 11:12:45,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 262 transitions, 617 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:12:45,288 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 588 flow [2022-11-20 11:12:45,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2022-11-20 11:12:45,290 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 9 predicate places. [2022-11-20 11:12:45,291 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 588 flow [2022-11-20 11:12:45,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:45,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:45,293 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] [2022-11-20 11:12:45,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:45,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:45,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:45,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1545104033, now seen corresponding path program 1 times [2022-11-20 11:12:45,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:45,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955875797] [2022-11-20 11:12:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:45,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:45,541 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:45,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370102034] [2022-11-20 11:12:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:45,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:45,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:45,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:45,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:12:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:45,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:12:45,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:45,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:45,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:45,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955875797] [2022-11-20 11:12:45,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:45,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370102034] [2022-11-20 11:12:45,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370102034] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:45,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:12:45,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:12:45,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143447690] [2022-11-20 11:12:45,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:45,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:12:45,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:45,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:12:45,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:12:45,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-20 11:12:45,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 247.875) internal successors, (1983), 8 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:45,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:45,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-20 11:12:45,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:46,231 INFO L130 PetriNetUnfolder]: 6/499 cut-off events. [2022-11-20 11:12:46,231 INFO L131 PetriNetUnfolder]: For 51/52 co-relation queries the response was YES. [2022-11-20 11:12:46,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 499 events. 6/499 cut-off events. For 51/52 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 651 event pairs, 0 based on Foata normal form. 6/483 useless extension candidates. Maximal degree in co-relation 506. Up to 22 conditions per place. [2022-11-20 11:12:46,234 INFO L137 encePairwiseOnDemand]: 277/284 looper letters, 29 selfloop transitions, 10 changer transitions 0/280 dead transitions. [2022-11-20 11:12:46,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 280 transitions, 720 flow [2022-11-20 11:12:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:12:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:12:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2246 transitions. [2022-11-20 11:12:46,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.878716744913928 [2022-11-20 11:12:46,241 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2246 transitions. [2022-11-20 11:12:46,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2246 transitions. [2022-11-20 11:12:46,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:46,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2246 transitions. [2022-11-20 11:12:46,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 249.55555555555554) internal successors, (2246), 9 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:46,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:46,259 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:46,259 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 588 flow. Second operand 9 states and 2246 transitions. [2022-11-20 11:12:46,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 280 transitions, 720 flow [2022-11-20 11:12:46,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 280 transitions, 707 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:12:46,267 INFO L231 Difference]: Finished difference. Result has 279 places, 266 transitions, 638 flow [2022-11-20 11:12:46,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=638, PETRI_PLACES=279, PETRI_TRANSITIONS=266} [2022-11-20 11:12:46,269 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 20 predicate places. [2022-11-20 11:12:46,269 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 266 transitions, 638 flow [2022-11-20 11:12:46,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 247.875) internal successors, (1983), 8 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:46,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:46,271 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:12:46,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:46,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash 45915963, now seen corresponding path program 1 times [2022-11-20 11:12:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:46,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067088033] [2022-11-20 11:12:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:46,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:46,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:46,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638586953] [2022-11-20 11:12:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:46,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:46,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:46,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:46,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:12:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:46,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:12:46,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:47,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:47,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:47,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067088033] [2022-11-20 11:12:47,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:47,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638586953] [2022-11-20 11:12:47,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638586953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:47,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:12:47,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:12:47,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442193745] [2022-11-20 11:12:47,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:47,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:12:47,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:12:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:12:47,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-20 11:12:47,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 266 transitions, 638 flow. Second operand has 14 states, 14 states have (on average 248.64285714285714) internal successors, (3481), 14 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:47,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:47,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-20 11:12:47,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:47,881 INFO L130 PetriNetUnfolder]: 11/790 cut-off events. [2022-11-20 11:12:47,882 INFO L131 PetriNetUnfolder]: For 132/134 co-relation queries the response was YES. [2022-11-20 11:12:47,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 790 events. 11/790 cut-off events. For 132/134 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1841 event pairs, 0 based on Foata normal form. 4/750 useless extension candidates. Maximal degree in co-relation 765. Up to 19 conditions per place. [2022-11-20 11:12:47,886 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 37 selfloop transitions, 16 changer transitions 0/294 dead transitions. [2022-11-20 11:12:47,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 294 transitions, 854 flow [2022-11-20 11:12:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:12:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:12:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3730 transitions. [2022-11-20 11:12:47,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755868544600939 [2022-11-20 11:12:47,899 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3730 transitions. [2022-11-20 11:12:47,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3730 transitions. [2022-11-20 11:12:47,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:47,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3730 transitions. [2022-11-20 11:12:47,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 248.66666666666666) internal successors, (3730), 15 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:47,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:47,928 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:47,928 INFO L175 Difference]: Start difference. First operand has 279 places, 266 transitions, 638 flow. Second operand 15 states and 3730 transitions. [2022-11-20 11:12:47,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 294 transitions, 854 flow [2022-11-20 11:12:47,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 294 transitions, 836 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 11:12:47,939 INFO L231 Difference]: Finished difference. Result has 288 places, 270 transitions, 687 flow [2022-11-20 11:12:47,940 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=687, PETRI_PLACES=288, PETRI_TRANSITIONS=270} [2022-11-20 11:12:47,941 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 29 predicate places. [2022-11-20 11:12:47,941 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 270 transitions, 687 flow [2022-11-20 11:12:47,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.64285714285714) internal successors, (3481), 14 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:47,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:47,943 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:47,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:48,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:12:48,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash 78156991, now seen corresponding path program 2 times [2022-11-20 11:12:48,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:48,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177117687] [2022-11-20 11:12:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:48,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:48,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:48,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026432674] [2022-11-20 11:12:48,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:48,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:48,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:48,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:48,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:12:48,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:12:48,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:48,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:12:48,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 11:12:48,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:12:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177117687] [2022-11-20 11:12:48,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026432674] [2022-11-20 11:12:48,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026432674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:48,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:48,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000569147] [2022-11-20 11:12:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:48,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:12:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:12:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:12:48,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-20 11:12:48,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 270 transitions, 687 flow. Second operand has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:48,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:48,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-20 11:12:48,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:48,944 INFO L130 PetriNetUnfolder]: 11/790 cut-off events. [2022-11-20 11:12:48,944 INFO L131 PetriNetUnfolder]: For 133/135 co-relation queries the response was YES. [2022-11-20 11:12:48,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 790 events. 11/790 cut-off events. For 133/135 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1838 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 771. Up to 50 conditions per place. [2022-11-20 11:12:48,948 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 29 selfloop transitions, 5 changer transitions 0/282 dead transitions. [2022-11-20 11:12:48,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 282 transitions, 779 flow [2022-11-20 11:12:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:12:48,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:12:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1245 transitions. [2022-11-20 11:12:48,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8767605633802817 [2022-11-20 11:12:48,953 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1245 transitions. [2022-11-20 11:12:48,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1245 transitions. [2022-11-20 11:12:48,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:48,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1245 transitions. [2022-11-20 11:12:48,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:48,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:48,962 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:48,962 INFO L175 Difference]: Start difference. First operand has 288 places, 270 transitions, 687 flow. Second operand 5 states and 1245 transitions. [2022-11-20 11:12:48,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 282 transitions, 779 flow [2022-11-20 11:12:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 282 transitions, 720 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-20 11:12:48,970 INFO L231 Difference]: Finished difference. Result has 283 places, 273 transitions, 662 flow [2022-11-20 11:12:48,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=662, PETRI_PLACES=283, PETRI_TRANSITIONS=273} [2022-11-20 11:12:48,972 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 24 predicate places. [2022-11-20 11:12:48,972 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 273 transitions, 662 flow [2022-11-20 11:12:48,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:48,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:48,973 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:48,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:49,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:49,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1872099950, now seen corresponding path program 1 times [2022-11-20 11:12:49,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:49,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957717605] [2022-11-20 11:12:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:49,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:49,237 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:49,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214243328] [2022-11-20 11:12:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:49,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:49,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:49,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:49,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:12:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:49,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:12:49,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:49,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:50,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:50,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957717605] [2022-11-20 11:12:50,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:50,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214243328] [2022-11-20 11:12:50,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214243328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:50,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:12:50,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 11:12:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690681649] [2022-11-20 11:12:50,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:50,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:12:50,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:50,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:12:50,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:12:50,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-20 11:12:50,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 273 transitions, 662 flow. Second operand has 16 states, 16 states have (on average 248.6875) internal successors, (3979), 16 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:50,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:50,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-20 11:12:50,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:50,658 INFO L130 PetriNetUnfolder]: 6/833 cut-off events. [2022-11-20 11:12:50,658 INFO L131 PetriNetUnfolder]: For 121/122 co-relation queries the response was YES. [2022-11-20 11:12:50,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 833 events. 6/833 cut-off events. For 121/122 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 670 event pairs, 0 based on Foata normal form. 8/823 useless extension candidates. Maximal degree in co-relation 1008. Up to 20 conditions per place. [2022-11-20 11:12:50,662 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 60 selfloop transitions, 22 changer transitions 0/326 dead transitions. [2022-11-20 11:12:50,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 326 transitions, 1019 flow [2022-11-20 11:12:50,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:12:50,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:12:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5230 transitions. [2022-11-20 11:12:50,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769282360831656 [2022-11-20 11:12:50,676 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5230 transitions. [2022-11-20 11:12:50,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5230 transitions. [2022-11-20 11:12:50,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:50,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5230 transitions. [2022-11-20 11:12:50,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 249.04761904761904) internal successors, (5230), 21 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:50,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:50,708 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:50,709 INFO L175 Difference]: Start difference. First operand has 283 places, 273 transitions, 662 flow. Second operand 21 states and 5230 transitions. [2022-11-20 11:12:50,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 326 transitions, 1019 flow [2022-11-20 11:12:50,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 326 transitions, 1009 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-20 11:12:50,718 INFO L231 Difference]: Finished difference. Result has 307 places, 282 transitions, 772 flow [2022-11-20 11:12:50,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=772, PETRI_PLACES=307, PETRI_TRANSITIONS=282} [2022-11-20 11:12:50,719 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 48 predicate places. [2022-11-20 11:12:50,719 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 282 transitions, 772 flow [2022-11-20 11:12:50,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 248.6875) internal successors, (3979), 16 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:50,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:50,722 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:50,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:50,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:50,930 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:50,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:50,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1606342958, now seen corresponding path program 2 times [2022-11-20 11:12:50,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:50,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827621666] [2022-11-20 11:12:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:50,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:51,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:51,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661159597] [2022-11-20 11:12:51,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:51,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:51,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:51,008 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:51,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:12:51,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:12:51,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:51,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:12:51,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-20 11:12:51,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:12:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:51,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827621666] [2022-11-20 11:12:51,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:51,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661159597] [2022-11-20 11:12:51,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661159597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:51,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:51,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:51,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875280627] [2022-11-20 11:12:51,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:51,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:12:51,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:12:51,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:12:51,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-20 11:12:51,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 282 transitions, 772 flow. Second operand has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:51,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:51,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-20 11:12:51,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:52,197 INFO L130 PetriNetUnfolder]: 6/831 cut-off events. [2022-11-20 11:12:52,197 INFO L131 PetriNetUnfolder]: For 185/186 co-relation queries the response was YES. [2022-11-20 11:12:52,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 831 events. 6/831 cut-off events. For 185/186 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 664 event pairs, 0 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 1009. Up to 80 conditions per place. [2022-11-20 11:12:52,202 INFO L137 encePairwiseOnDemand]: 280/284 looper letters, 18 selfloop transitions, 5 changer transitions 0/280 dead transitions. [2022-11-20 11:12:52,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 280 transitions, 808 flow [2022-11-20 11:12:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:12:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:12:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 989 transitions. [2022-11-20 11:12:52,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8705985915492958 [2022-11-20 11:12:52,206 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 989 transitions. [2022-11-20 11:12:52,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 989 transitions. [2022-11-20 11:12:52,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:52,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 989 transitions. [2022-11-20 11:12:52,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:52,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:52,213 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:52,214 INFO L175 Difference]: Start difference. First operand has 307 places, 282 transitions, 772 flow. Second operand 4 states and 989 transitions. [2022-11-20 11:12:52,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 280 transitions, 808 flow [2022-11-20 11:12:52,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 280 transitions, 785 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 11:12:52,222 INFO L231 Difference]: Finished difference. Result has 298 places, 280 transitions, 749 flow [2022-11-20 11:12:52,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=749, PETRI_PLACES=298, PETRI_TRANSITIONS=280} [2022-11-20 11:12:52,224 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 39 predicate places. [2022-11-20 11:12:52,224 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 280 transitions, 749 flow [2022-11-20 11:12:52,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:52,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:52,225 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2022-11-20 11:12:52,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:52,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:52,433 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:52,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:52,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1015375069, now seen corresponding path program 1 times [2022-11-20 11:12:52,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:52,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249478899] [2022-11-20 11:12:52,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:52,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:52,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:52,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253419668] [2022-11-20 11:12:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:52,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:52,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:52,545 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:52,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:12:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:53,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:12:53,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:12:53,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:12:54,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:54,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249478899] [2022-11-20 11:12:54,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:54,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253419668] [2022-11-20 11:12:54,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253419668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:54,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:12:54,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 11:12:54,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150830672] [2022-11-20 11:12:54,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:54,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:12:54,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:54,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:12:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:12:54,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-20 11:12:54,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 280 transitions, 749 flow. Second operand has 32 states, 32 states have (on average 249.4375) internal successors, (7982), 32 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:54,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:54,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-20 11:12:54,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:56,115 INFO L130 PetriNetUnfolder]: 6/1503 cut-off events. [2022-11-20 11:12:56,115 INFO L131 PetriNetUnfolder]: For 730/731 co-relation queries the response was YES. [2022-11-20 11:12:56,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 1503 events. 6/1503 cut-off events. For 730/731 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 704 event pairs, 0 based on Foata normal form. 16/1501 useless extension candidates. Maximal degree in co-relation 2123. Up to 38 conditions per place. [2022-11-20 11:12:56,122 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 124 selfloop transitions, 46 changer transitions 0/412 dead transitions. [2022-11-20 11:12:56,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 412 transitions, 1685 flow [2022-11-20 11:12:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:12:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 11:12:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 11202 transitions. [2022-11-20 11:12:56,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765258215962441 [2022-11-20 11:12:56,145 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 11202 transitions. [2022-11-20 11:12:56,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 11202 transitions. [2022-11-20 11:12:56,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:56,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 11202 transitions. [2022-11-20 11:12:56,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 248.93333333333334) internal successors, (11202), 45 states have internal predecessors, (11202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:56,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 284.0) internal successors, (13064), 46 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:56,206 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 284.0) internal successors, (13064), 46 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:56,206 INFO L175 Difference]: Start difference. First operand has 298 places, 280 transitions, 749 flow. Second operand 45 states and 11202 transitions. [2022-11-20 11:12:56,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 412 transitions, 1685 flow [2022-11-20 11:12:56,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 412 transitions, 1675 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:12:56,219 INFO L231 Difference]: Finished difference. Result has 348 places, 305 transitions, 1062 flow [2022-11-20 11:12:56,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1062, PETRI_PLACES=348, PETRI_TRANSITIONS=305} [2022-11-20 11:12:56,222 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 89 predicate places. [2022-11-20 11:12:56,222 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 305 transitions, 1062 flow [2022-11-20 11:12:56,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 249.4375) internal successors, (7982), 32 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:56,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:56,226 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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] [2022-11-20 11:12:56,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:56,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:12:56,435 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:12:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash -992843613, now seen corresponding path program 2 times [2022-11-20 11:12:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:56,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915228793] [2022-11-20 11:12:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:56,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:56,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:56,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671605060] [2022-11-20 11:12:56,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:56,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:56,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:56,606 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:56,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:12:57,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:12:57,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:57,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 2828 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:12:57,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:12:59,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:13:01,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:01,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915228793] [2022-11-20 11:13:01,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:13:01,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671605060] [2022-11-20 11:13:01,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671605060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:01,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:01,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-20 11:13:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162223974] [2022-11-20 11:13:01,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:01,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 11:13:01,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 11:13:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 11:13:01,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-20 11:13:01,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 305 transitions, 1062 flow. Second operand has 61 states, 61 states have (on average 249.54098360655738) internal successors, (15222), 61 states have internal predecessors, (15222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:01,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-20 11:13:01,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:05,422 INFO L130 PetriNetUnfolder]: 6/2763 cut-off events. [2022-11-20 11:13:05,422 INFO L131 PetriNetUnfolder]: For 4818/4819 co-relation queries the response was YES. [2022-11-20 11:13:05,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4604 conditions, 2763 events. 6/2763 cut-off events. For 4818/4819 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 779 event pairs, 0 based on Foata normal form. 30/2775 useless extension candidates. Maximal degree in co-relation 4454. Up to 98 conditions per place. [2022-11-20 11:13:05,435 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 244 selfloop transitions, 91 changer transitions 0/577 dead transitions. [2022-11-20 11:13:05,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 577 transitions, 3174 flow [2022-11-20 11:13:05,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-20 11:13:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-20 11:13:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 22399 transitions. [2022-11-20 11:13:05,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763302034428795 [2022-11-20 11:13:05,480 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 22399 transitions. [2022-11-20 11:13:05,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 22399 transitions. [2022-11-20 11:13:05,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:05,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 22399 transitions. [2022-11-20 11:13:05,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 248.87777777777777) internal successors, (22399), 90 states have internal predecessors, (22399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:05,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 284.0) internal successors, (25844), 91 states have internal predecessors, (25844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:05,596 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 284.0) internal successors, (25844), 91 states have internal predecessors, (25844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:05,596 INFO L175 Difference]: Start difference. First operand has 348 places, 305 transitions, 1062 flow. Second operand 90 states and 22399 transitions. [2022-11-20 11:13:05,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 577 transitions, 3174 flow [2022-11-20 11:13:05,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 577 transitions, 3087 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-20 11:13:05,621 INFO L231 Difference]: Finished difference. Result has 435 places, 351 transitions, 1694 flow [2022-11-20 11:13:05,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1694, PETRI_PLACES=435, PETRI_TRANSITIONS=351} [2022-11-20 11:13:05,622 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 176 predicate places. [2022-11-20 11:13:05,622 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 351 transitions, 1694 flow [2022-11-20 11:13:05,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 249.54098360655738) internal successors, (15222), 61 states have internal predecessors, (15222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:05,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:05,628 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 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] [2022-11-20 11:13:05,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:05,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:13:05,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:13:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1869507526, now seen corresponding path program 3 times [2022-11-20 11:13:05,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:05,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542560256] [2022-11-20 11:13:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:05,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:06,054 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:13:06,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680912750] [2022-11-20 11:13:06,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:13:06,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:13:06,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:06,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:13:06,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:13:06,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:13:06,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:13:06,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:13:07,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 11:13:09,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 11:13:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:11,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542560256] [2022-11-20 11:13:11,673 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:13:11,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680912750] [2022-11-20 11:13:11,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680912750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:11,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:11,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:13:11,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286723659] [2022-11-20 11:13:11,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:11,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:13:11,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:11,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:13:11,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:13:11,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 284 [2022-11-20 11:13:11,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 351 transitions, 1694 flow. Second operand has 14 states, 14 states have (on average 237.35714285714286) internal successors, (3323), 14 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:11,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:11,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 284 [2022-11-20 11:13:11,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:14,900 INFO L130 PetriNetUnfolder]: 7/4035 cut-off events. [2022-11-20 11:13:14,900 INFO L131 PetriNetUnfolder]: For 4797/4798 co-relation queries the response was YES. [2022-11-20 11:13:14,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7188 conditions, 4035 events. 7/4035 cut-off events. For 4797/4798 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 828 event pairs, 0 based on Foata normal form. 34/4051 useless extension candidates. Maximal degree in co-relation 7022. Up to 307 conditions per place. [2022-11-20 11:13:14,919 INFO L137 encePairwiseOnDemand]: 269/284 looper letters, 224 selfloop transitions, 142 changer transitions 0/593 dead transitions. [2022-11-20 11:13:14,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 593 transitions, 4791 flow [2022-11-20 11:13:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:13:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 11:13:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5673 transitions. [2022-11-20 11:13:14,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.832306338028169 [2022-11-20 11:13:14,926 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5673 transitions. [2022-11-20 11:13:14,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5673 transitions. [2022-11-20 11:13:14,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:14,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5673 transitions. [2022-11-20 11:13:14,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 236.375) internal successors, (5673), 24 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:14,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 284.0) internal successors, (7100), 25 states have internal predecessors, (7100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:14,945 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 284.0) internal successors, (7100), 25 states have internal predecessors, (7100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:14,945 INFO L175 Difference]: Start difference. First operand has 435 places, 351 transitions, 1694 flow. Second operand 24 states and 5673 transitions. [2022-11-20 11:13:14,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 593 transitions, 4791 flow [2022-11-20 11:13:15,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 593 transitions, 4435 flow, removed 51 selfloop flow, removed 43 redundant places. [2022-11-20 11:13:15,046 INFO L231 Difference]: Finished difference. Result has 422 places, 484 transitions, 3633 flow [2022-11-20 11:13:15,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3633, PETRI_PLACES=422, PETRI_TRANSITIONS=484} [2022-11-20 11:13:15,050 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 163 predicate places. [2022-11-20 11:13:15,050 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 484 transitions, 3633 flow [2022-11-20 11:13:15,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 237.35714285714286) internal successors, (3323), 14 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:15,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:15,051 INFO L209 CegarLoopForPetriNet]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 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] [2022-11-20 11:13:15,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:15,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:13:15,259 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:13:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1940981443, now seen corresponding path program 1 times [2022-11-20 11:13:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:15,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009802924] [2022-11-20 11:13:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:15,467 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:13:15,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066898872] [2022-11-20 11:13:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:15,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:13:15,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:15,471 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:13:15,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:13:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:21,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 5501 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:13:21,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 11:13:24,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:13:24,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:24,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009802924] [2022-11-20 11:13:24,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:13:24,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066898872] [2022-11-20 11:13:24,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066898872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:24,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:24,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:13:24,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40794150] [2022-11-20 11:13:24,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:24,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:13:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:24,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:13:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:13:24,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 284 [2022-11-20 11:13:24,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 484 transitions, 3633 flow. Second operand has 11 states, 11 states have (on average 236.45454545454547) internal successors, (2601), 11 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:24,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:24,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 284 [2022-11-20 11:13:24,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:27,162 INFO L130 PetriNetUnfolder]: 7/3978 cut-off events. [2022-11-20 11:13:27,162 INFO L131 PetriNetUnfolder]: For 7116/7117 co-relation queries the response was YES. [2022-11-20 11:13:27,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7491 conditions, 3978 events. 7/3978 cut-off events. For 7116/7117 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 679 event pairs, 0 based on Foata normal form. 57/4017 useless extension candidates. Maximal degree in co-relation 7317. Up to 370 conditions per place. [2022-11-20 11:13:27,174 INFO L137 encePairwiseOnDemand]: 274/284 looper letters, 208 selfloop transitions, 137 changer transitions 0/572 dead transitions. [2022-11-20 11:13:27,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 572 transitions, 5103 flow [2022-11-20 11:13:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:13:27,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:13:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3546 transitions. [2022-11-20 11:13:27,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8323943661971831 [2022-11-20 11:13:27,178 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3546 transitions. [2022-11-20 11:13:27,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3546 transitions. [2022-11-20 11:13:27,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:27,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3546 transitions. [2022-11-20 11:13:27,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 236.4) internal successors, (3546), 15 states have internal predecessors, (3546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:27,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:27,251 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:27,251 INFO L175 Difference]: Start difference. First operand has 422 places, 484 transitions, 3633 flow. Second operand 15 states and 3546 transitions. [2022-11-20 11:13:27,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 572 transitions, 5103 flow [2022-11-20 11:13:27,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 572 transitions, 5077 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-20 11:13:27,309 INFO L231 Difference]: Finished difference. Result has 432 places, 541 transitions, 4810 flow [2022-11-20 11:13:27,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4810, PETRI_PLACES=432, PETRI_TRANSITIONS=541} [2022-11-20 11:13:27,311 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 173 predicate places. [2022-11-20 11:13:27,311 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 541 transitions, 4810 flow [2022-11-20 11:13:27,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 236.45454545454547) internal successors, (2601), 11 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:27,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:27,313 INFO L209 CegarLoopForPetriNet]: trace histogram [60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 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] [2022-11-20 11:13:27,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:27,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:13:27,530 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:13:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2084923133, now seen corresponding path program 1 times [2022-11-20 11:13:27,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:27,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139553624] [2022-11-20 11:13:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:27,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:28,000 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:13:28,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210132672] [2022-11-20 11:13:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:28,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:13:28,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:28,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:13:28,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:13:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:31,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 10330 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:13:31,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 72708 backedges. 0 proven. 36978 refuted. 0 times theorem prover too weak. 35730 trivial. 0 not checked. [2022-11-20 11:13:35,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 72708 backedges. 0 proven. 36978 refuted. 0 times theorem prover too weak. 35730 trivial. 0 not checked. [2022-11-20 11:13:42,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:42,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139553624] [2022-11-20 11:13:42,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:13:42,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210132672] [2022-11-20 11:13:42,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210132672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:42,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:42,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 11:13:42,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518568962] [2022-11-20 11:13:42,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:42,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:13:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:13:42,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:13:42,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-20 11:13:42,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 541 transitions, 4810 flow. Second operand has 12 states, 12 states have (on average 246.5) internal successors, (2958), 12 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:42,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:42,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-20 11:13:42,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:50,796 INFO L130 PetriNetUnfolder]: 9/6530 cut-off events. [2022-11-20 11:13:50,796 INFO L131 PetriNetUnfolder]: For 14256/14257 co-relation queries the response was YES. [2022-11-20 11:13:50,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12233 conditions, 6530 events. 9/6530 cut-off events. For 14256/14257 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 429 event pairs, 0 based on Foata normal form. 3/6515 useless extension candidates. Maximal degree in co-relation 12057. Up to 240 conditions per place. [2022-11-20 11:13:50,824 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 57 selfloop transitions, 15 changer transitions 0/587 dead transitions. [2022-11-20 11:13:50,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 587 transitions, 5136 flow [2022-11-20 11:13:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:13:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:13:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3702 transitions. [2022-11-20 11:13:50,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8690140845070422 [2022-11-20 11:13:50,829 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3702 transitions. [2022-11-20 11:13:50,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3702 transitions. [2022-11-20 11:13:50,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:50,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3702 transitions. [2022-11-20 11:13:50,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 246.8) internal successors, (3702), 15 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:50,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:50,843 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:50,843 INFO L175 Difference]: Start difference. First operand has 432 places, 541 transitions, 4810 flow. Second operand 15 states and 3702 transitions. [2022-11-20 11:13:50,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 587 transitions, 5136 flow [2022-11-20 11:13:50,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 587 transitions, 4985 flow, removed 58 selfloop flow, removed 8 redundant places. [2022-11-20 11:13:50,944 INFO L231 Difference]: Finished difference. Result has 442 places, 549 transitions, 4767 flow [2022-11-20 11:13:50,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=4668, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4767, PETRI_PLACES=442, PETRI_TRANSITIONS=549} [2022-11-20 11:13:50,945 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 183 predicate places. [2022-11-20 11:13:50,946 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 549 transitions, 4767 flow [2022-11-20 11:13:50,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 246.5) internal successors, (2958), 12 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:50,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:50,948 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:13:50,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:51,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:13:51,161 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:13:51,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:51,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2063532050, now seen corresponding path program 4 times [2022-11-20 11:13:51,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:51,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618301302] [2022-11-20 11:13:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:51,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:51,554 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:13:51,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681571345] [2022-11-20 11:13:51,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:13:51,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:13:51,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:51,557 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:13:51,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390726e1-bbcc-4ecd-b885-2c09f2e70eaa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process