./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/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_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/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_987f32cf-1292-4fdd-9134-e2ccc55f30cf/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 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- 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 10:59:45,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:59:45,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:59:45,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:59:45,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:59:45,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:59:45,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:59:45,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:59:45,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:59:45,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:59:45,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:59:45,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:59:45,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:59:45,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:59:45,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:59:45,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:59:45,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:59:45,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:59:45,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:59:45,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:59:45,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:59:45,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:59:45,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:59:45,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:59:45,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:59:45,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:59:45,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:59:45,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:59:45,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:59:45,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:59:45,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:59:45,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:59:45,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:59:45,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:59:45,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:59:45,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:59:45,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:59:45,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:59:45,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:59:45,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:59:45,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:59:45,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:59:45,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:59:45,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:59:45,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:59:45,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:59:45,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:59:45,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:59:45,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:59:45,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:59:45,800 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:59:45,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:59:45,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:59:45,802 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:59:45,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:59:45,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:59:45,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:59:45,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:59:45,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:59:45,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:59:45,803 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:59:45,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:59:45,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:59:45,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:59:45,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:59:45,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:59:45,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:59:45,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:59:45,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:59:45,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:59:45,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:59:45,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:59:45,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:59:45,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:59:45,808 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:59:45,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:59:45,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:59:45,808 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_987f32cf-1292-4fdd-9134-e2ccc55f30cf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-11-20 10:59:46,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:59:46,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:59:46,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:59:46,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:59:46,107 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:59:46,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-20 10:59:49,194 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:59:49,462 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:59:49,462 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-20 10:59:49,470 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/data/e296c05d4/7bb0d9a891414aba8225d1e7e04fdccc/FLAG44749b78a [2022-11-20 10:59:49,490 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/data/e296c05d4/7bb0d9a891414aba8225d1e7e04fdccc [2022-11-20 10:59:49,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:59:49,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:59:49,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:59:49,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:59:49,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:59:49,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d16921b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49, skipping insertion in model container [2022-11-20 10:59:49,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:59:49,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:59:49,723 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_987f32cf-1292-4fdd-9134-e2ccc55f30cf/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-20 10:59:49,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:59:49,739 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:59:49,765 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_987f32cf-1292-4fdd-9134-e2ccc55f30cf/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-20 10:59:49,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:59:49,784 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:59:49,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49 WrapperNode [2022-11-20 10:59:49,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:59:49,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:59:49,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:59:49,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:59:49,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,832 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2022-11-20 10:59:49,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:59:49,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:59:49,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:59:49,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:59:49,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:59:49,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:59:49,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:59:49,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:59:49,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (1/1) ... [2022-11-20 10:59:49,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:59:49,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:59:49,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:59:49,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:59:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:59:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:59:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:59:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:59:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:59:49,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:59:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:59:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:59:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:59:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:59:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:59:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:59:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:59:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:59:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:59:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:59:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:59:49,988 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 10:59:50,136 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:59:50,138 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:59:50,583 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:59:50,687 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:59:50,687 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 10:59:50,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:59:50 BoogieIcfgContainer [2022-11-20 10:59:50,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:59:50,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:59:50,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:59:50,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:59:50,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:59:49" (1/3) ... [2022-11-20 10:59:50,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f5317f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:59:50, skipping insertion in model container [2022-11-20 10:59:50,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:59:49" (2/3) ... [2022-11-20 10:59:50,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f5317f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:59:50, skipping insertion in model container [2022-11-20 10:59:50,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:59:50" (3/3) ... [2022-11-20 10:59:50,700 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-11-20 10:59:50,709 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:59:50,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:59:50,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 10:59:50,722 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:59:50,867 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:59:50,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 398 flow [2022-11-20 10:59:51,005 INFO L130 PetriNetUnfolder]: 12/184 cut-off events. [2022-11-20 10:59:51,005 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:59:51,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 184 events. 12/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-11-20 10:59:51,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 187 transitions, 398 flow [2022-11-20 10:59:51,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 160 transitions, 332 flow [2022-11-20 10:59:51,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:59:51,035 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;@6ae5f095, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:59:51,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 10:59:51,060 INFO L130 PetriNetUnfolder]: 4/81 cut-off events. [2022-11-20 10:59:51,060 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:59:51,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:59:51,061 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] [2022-11-20 10:59:51,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:59:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash 392499776, now seen corresponding path program 1 times [2022-11-20 10:59:51,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:51,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907185118] [2022-11-20 10:59:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:51,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:51,528 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 10:59:51,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:51,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907185118] [2022-11-20 10:59:51,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907185118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:51,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:59:51,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:59:51,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255077238] [2022-11-20 10:59:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:51,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:59:51,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:51,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:59:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:59:51,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2022-11-20 10:59:51,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 160 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 10:59:51,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:59:51,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2022-11-20 10:59:51,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:59:51,902 INFO L130 PetriNetUnfolder]: 63/517 cut-off events. [2022-11-20 10:59:51,903 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-20 10:59:51,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 517 events. 63/517 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2403 event pairs, 40 based on Foata normal form. 29/458 useless extension candidates. Maximal degree in co-relation 391. Up to 57 conditions per place. [2022-11-20 10:59:51,915 INFO L137 encePairwiseOnDemand]: 174/187 looper letters, 32 selfloop transitions, 4 changer transitions 4/169 dead transitions. [2022-11-20 10:59:51,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 169 transitions, 434 flow [2022-11-20 10:59:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:59:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:59:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 829 transitions. [2022-11-20 10:59:51,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8866310160427807 [2022-11-20 10:59:51,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 829 transitions. [2022-11-20 10:59:51,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 829 transitions. [2022-11-20 10:59:51,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:59:51,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 829 transitions. [2022-11-20 10:59:51,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 0 states 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 10:59:51,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states 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 10:59:51,966 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states 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 10:59:51,968 INFO L175 Difference]: Start difference. First operand has 159 places, 160 transitions, 332 flow. Second operand 5 states and 829 transitions. [2022-11-20 10:59:51,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 169 transitions, 434 flow [2022-11-20 10:59:51,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 169 transitions, 422 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:59:51,983 INFO L231 Difference]: Finished difference. Result has 162 places, 152 transitions, 334 flow [2022-11-20 10:59:51,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=162, PETRI_TRANSITIONS=152} [2022-11-20 10:59:51,992 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-11-20 10:59:51,993 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 334 flow [2022-11-20 10:59:51,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 10:59:51,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:59:51,995 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:59:51,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:59:51,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:59:51,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1027812931, now seen corresponding path program 1 times [2022-11-20 10:59:51,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:52,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711916841] [2022-11-20 10:59:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:52,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:59:52,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:52,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711916841] [2022-11-20 10:59:52,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711916841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:59:52,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832765960] [2022-11-20 10:59:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:52,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:52,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:59:52,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:59:52,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:59:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:52,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:59:52,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:59:52,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:59:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:59:52,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832765960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:59:52,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:59:52,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:59:52,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866074164] [2022-11-20 10:59:52,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:59:52,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:59:52,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:52,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:59:52,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:59:52,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2022-11-20 10:59:52,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 152 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 12 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states 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 10:59:52,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:59:52,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2022-11-20 10:59:52,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:59:53,225 INFO L130 PetriNetUnfolder]: 156/1183 cut-off events. [2022-11-20 10:59:53,225 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-20 10:59:53,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 1183 events. 156/1183 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7459 event pairs, 100 based on Foata normal form. 3/985 useless extension candidates. Maximal degree in co-relation 1224. Up to 70 conditions per place. [2022-11-20 10:59:53,237 INFO L137 encePairwiseOnDemand]: 180/187 looper letters, 68 selfloop transitions, 18 changer transitions 0/215 dead transitions. [2022-11-20 10:59:53,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 215 transitions, 678 flow [2022-11-20 10:59:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:59:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:59:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2897 transitions. [2022-11-20 10:59:53,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606654783125371 [2022-11-20 10:59:53,246 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2897 transitions. [2022-11-20 10:59:53,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2897 transitions. [2022-11-20 10:59:53,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:59:53,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2897 transitions. [2022-11-20 10:59:53,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 160.94444444444446) internal successors, (2897), 18 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states 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 10:59:53,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 187.0) internal successors, (3553), 19 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states 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 10:59:53,268 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 187.0) internal successors, (3553), 19 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states 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 10:59:53,268 INFO L175 Difference]: Start difference. First operand has 162 places, 152 transitions, 334 flow. Second operand 18 states and 2897 transitions. [2022-11-20 10:59:53,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 215 transitions, 678 flow [2022-11-20 10:59:53,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 215 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:59:53,278 INFO L231 Difference]: Finished difference. Result has 178 places, 164 transitions, 438 flow [2022-11-20 10:59:53,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=438, PETRI_PLACES=178, PETRI_TRANSITIONS=164} [2022-11-20 10:59:53,279 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 19 predicate places. [2022-11-20 10:59:53,280 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 164 transitions, 438 flow [2022-11-20 10:59:53,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 12 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states 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 10:59:53,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:59:53,282 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:59:53,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:59:53,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:53,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:59:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1797429457, now seen corresponding path program 1 times [2022-11-20 10:59:53,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:53,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260706284] [2022-11-20 10:59:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:53,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:59:53,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:53,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260706284] [2022-11-20 10:59:53,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260706284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:59:53,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009450007] [2022-11-20 10:59:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:53,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:53,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:59:53,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:59:53,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:59:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:53,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:59:53,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:59:53,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:59:53,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009450007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:53,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:59:53,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:59:53,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899760912] [2022-11-20 10:59:53,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:53,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:59:53,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:59:53,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:59:53,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2022-11-20 10:59:53,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 164 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 10:59:53,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:59:53,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2022-11-20 10:59:53,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:59:54,355 INFO L130 PetriNetUnfolder]: 156/1179 cut-off events. [2022-11-20 10:59:54,356 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-20 10:59:54,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 1179 events. 156/1179 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7429 event pairs, 100 based on Foata normal form. 4/982 useless extension candidates. Maximal degree in co-relation 1284. Up to 192 conditions per place. [2022-11-20 10:59:54,365 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 33 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2022-11-20 10:59:54,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 533 flow [2022-11-20 10:59:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:59:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:59:54,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1128 transitions. [2022-11-20 10:59:54,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617265087853323 [2022-11-20 10:59:54,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1128 transitions. [2022-11-20 10:59:54,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1128 transitions. [2022-11-20 10:59:54,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:59:54,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1128 transitions. [2022-11-20 10:59:54,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states 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 10:59:54,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 10:59:54,377 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 10:59:54,377 INFO L175 Difference]: Start difference. First operand has 178 places, 164 transitions, 438 flow. Second operand 7 states and 1128 transitions. [2022-11-20 10:59:54,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 533 flow [2022-11-20 10:59:54,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 173 transitions, 501 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 10:59:54,384 INFO L231 Difference]: Finished difference. Result has 174 places, 160 transitions, 401 flow [2022-11-20 10:59:54,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=174, PETRI_TRANSITIONS=160} [2022-11-20 10:59:54,385 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-11-20 10:59:54,385 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 160 transitions, 401 flow [2022-11-20 10:59:54,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 10:59:54,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:59:54,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:59:54,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:59:54,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:54,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:59:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1925412711, now seen corresponding path program 1 times [2022-11-20 10:59:54,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:54,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448313559] [2022-11-20 10:59:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:54,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:54,766 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 10:59:54,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:54,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448313559] [2022-11-20 10:59:54,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448313559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:54,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:59:54,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:59:54,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374751228] [2022-11-20 10:59:54,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:54,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:59:54,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:59:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:59:54,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-20 10:59:54,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 160 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 10:59:54,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:59:54,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-20 10:59:54,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:59:55,552 INFO L130 PetriNetUnfolder]: 901/3304 cut-off events. [2022-11-20 10:59:55,552 INFO L131 PetriNetUnfolder]: For 52/87 co-relation queries the response was YES. [2022-11-20 10:59:55,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 3304 events. 901/3304 cut-off events. For 52/87 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 28432 event pairs, 525 based on Foata normal form. 5/2819 useless extension candidates. Maximal degree in co-relation 4564. Up to 931 conditions per place. [2022-11-20 10:59:55,578 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 35 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2022-11-20 10:59:55,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 181 transitions, 534 flow [2022-11-20 10:59:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:59:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:59:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 831 transitions. [2022-11-20 10:59:55,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8887700534759359 [2022-11-20 10:59:55,582 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 831 transitions. [2022-11-20 10:59:55,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 831 transitions. [2022-11-20 10:59:55,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:59:55,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 831 transitions. [2022-11-20 10:59:55,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states 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 10:59:55,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states 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 10:59:55,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states 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 10:59:55,588 INFO L175 Difference]: Start difference. First operand has 174 places, 160 transitions, 401 flow. Second operand 5 states and 831 transitions. [2022-11-20 10:59:55,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 181 transitions, 534 flow [2022-11-20 10:59:55,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 181 transitions, 520 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:59:55,595 INFO L231 Difference]: Finished difference. Result has 176 places, 163 transitions, 417 flow [2022-11-20 10:59:55,596 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=176, PETRI_TRANSITIONS=163} [2022-11-20 10:59:55,597 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2022-11-20 10:59:55,598 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 163 transitions, 417 flow [2022-11-20 10:59:55,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 10:59:55,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:59:55,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:59:55,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:59:55,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:59:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:55,599 INFO L85 PathProgramCache]: Analyzing trace with hash 884461943, now seen corresponding path program 1 times [2022-11-20 10:59:55,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:55,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741587237] [2022-11-20 10:59:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:55,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:55,737 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 10:59:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:55,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741587237] [2022-11-20 10:59:55,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741587237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:55,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:59:55,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:59:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164437448] [2022-11-20 10:59:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:55,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:59:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:59:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:59:55,741 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-20 10:59:55,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 163 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 10:59:55,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:59:55,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-20 10:59:55,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:59:56,489 INFO L130 PetriNetUnfolder]: 1241/3519 cut-off events. [2022-11-20 10:59:56,490 INFO L131 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2022-11-20 10:59:56,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6829 conditions, 3519 events. 1241/3519 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30524 event pairs, 570 based on Foata normal form. 0/3154 useless extension candidates. Maximal degree in co-relation 5455. Up to 1361 conditions per place. [2022-11-20 10:59:56,521 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 34 selfloop transitions, 4 changer transitions 0/183 dead transitions. [2022-11-20 10:59:56,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 183 transitions, 542 flow [2022-11-20 10:59:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:59:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:59:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 830 transitions. [2022-11-20 10:59:56,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877005347593583 [2022-11-20 10:59:56,524 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 830 transitions. [2022-11-20 10:59:56,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 830 transitions. [2022-11-20 10:59:56,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:59:56,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 830 transitions. [2022-11-20 10:59:56,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:59:56,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states 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 10:59:56,530 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states 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 10:59:56,530 INFO L175 Difference]: Start difference. First operand has 176 places, 163 transitions, 417 flow. Second operand 5 states and 830 transitions. [2022-11-20 10:59:56,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 183 transitions, 542 flow [2022-11-20 10:59:56,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 183 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:59:56,535 INFO L231 Difference]: Finished difference. Result has 182 places, 166 transitions, 445 flow [2022-11-20 10:59:56,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=182, PETRI_TRANSITIONS=166} [2022-11-20 10:59:56,536 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 23 predicate places. [2022-11-20 10:59:56,536 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 166 transitions, 445 flow [2022-11-20 10:59:56,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 10:59:56,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:59:56,537 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:59:56,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:59:56,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:59:56,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:56,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1930627857, now seen corresponding path program 1 times [2022-11-20 10:59:56,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:56,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137818295] [2022-11-20 10:59:56,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:56,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:59:56,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:56,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137818295] [2022-11-20 10:59:56,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137818295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:59:56,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414366174] [2022-11-20 10:59:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:56,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:56,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:59:56,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:59:56,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:59:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:56,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:59:56,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:59:56,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:59:56,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414366174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:56,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:59:56,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 10:59:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265406650] [2022-11-20 10:59:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:56,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:59:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:56,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:59:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:59:56,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 187 [2022-11-20 10:59:56,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 166 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states 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 10:59:56,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:59:56,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 187 [2022-11-20 10:59:56,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:59:58,105 INFO L130 PetriNetUnfolder]: 1501/5011 cut-off events. [2022-11-20 10:59:58,106 INFO L131 PetriNetUnfolder]: For 1001/1001 co-relation queries the response was YES. [2022-11-20 10:59:58,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10423 conditions, 5011 events. 1501/5011 cut-off events. For 1001/1001 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 46178 event pairs, 1218 based on Foata normal form. 0/4441 useless extension candidates. Maximal degree in co-relation 9692. Up to 2273 conditions per place. [2022-11-20 10:59:58,152 INFO L137 encePairwiseOnDemand]: 178/187 looper letters, 50 selfloop transitions, 8 changer transitions 2/186 dead transitions. [2022-11-20 10:59:58,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 186 transitions, 617 flow [2022-11-20 10:59:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:59:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:59:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1221 transitions. [2022-11-20 10:59:58,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161764705882353 [2022-11-20 10:59:58,156 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1221 transitions. [2022-11-20 10:59:58,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1221 transitions. [2022-11-20 10:59:58,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:59:58,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1221 transitions. [2022-11-20 10:59:58,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.625) internal successors, (1221), 8 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states 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 10:59:58,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 10:59:58,164 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 10:59:58,164 INFO L175 Difference]: Start difference. First operand has 182 places, 166 transitions, 445 flow. Second operand 8 states and 1221 transitions. [2022-11-20 10:59:58,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 186 transitions, 617 flow [2022-11-20 10:59:58,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 186 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:59:58,189 INFO L231 Difference]: Finished difference. Result has 191 places, 168 transitions, 477 flow [2022-11-20 10:59:58,189 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=191, PETRI_TRANSITIONS=168} [2022-11-20 10:59:58,190 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 32 predicate places. [2022-11-20 10:59:58,190 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 168 transitions, 477 flow [2022-11-20 10:59:58,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states 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 10:59:58,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:59:58,192 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:59:58,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:59:58,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:58,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:59:58,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:58,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1337321091, now seen corresponding path program 1 times [2022-11-20 10:59:58,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:58,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35150732] [2022-11-20 10:59:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:58,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:59:58,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:58,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35150732] [2022-11-20 10:59:58,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35150732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:59:58,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882790840] [2022-11-20 10:59:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:58,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:58,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:59:58,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:59:58,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:59:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:58,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:59:58,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:59:58,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:59:58,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882790840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:58,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:59:58,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 10:59:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519156905] [2022-11-20 10:59:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:58,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:59:58,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:59:58,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:59:58,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 187 [2022-11-20 10:59:58,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 168 transitions, 477 flow. Second operand has 7 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states 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 10:59:58,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:59:58,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 187 [2022-11-20 10:59:58,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:59:59,863 INFO L130 PetriNetUnfolder]: 1326/3761 cut-off events. [2022-11-20 10:59:59,864 INFO L131 PetriNetUnfolder]: For 858/862 co-relation queries the response was YES. [2022-11-20 10:59:59,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8194 conditions, 3761 events. 1326/3761 cut-off events. For 858/862 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 31727 event pairs, 1224 based on Foata normal form. 4/3439 useless extension candidates. Maximal degree in co-relation 7813. Up to 2201 conditions per place. [2022-11-20 10:59:59,906 INFO L137 encePairwiseOnDemand]: 178/187 looper letters, 36 selfloop transitions, 6 changer transitions 15/183 dead transitions. [2022-11-20 10:59:59,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 183 transitions, 630 flow [2022-11-20 10:59:59,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:59:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:59:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1217 transitions. [2022-11-20 10:59:59,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8135026737967914 [2022-11-20 10:59:59,912 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1217 transitions. [2022-11-20 10:59:59,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1217 transitions. [2022-11-20 10:59:59,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:59:59,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1217 transitions. [2022-11-20 10:59:59,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.125) internal successors, (1217), 8 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 10:59:59,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 10:59:59,923 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 10:59:59,923 INFO L175 Difference]: Start difference. First operand has 191 places, 168 transitions, 477 flow. Second operand 8 states and 1217 transitions. [2022-11-20 10:59:59,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 183 transitions, 630 flow [2022-11-20 10:59:59,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 183 transitions, 620 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:59:59,940 INFO L231 Difference]: Finished difference. Result has 196 places, 166 transitions, 469 flow [2022-11-20 10:59:59,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=469, PETRI_PLACES=196, PETRI_TRANSITIONS=166} [2022-11-20 10:59:59,941 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 37 predicate places. [2022-11-20 10:59:59,942 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 166 transitions, 469 flow [2022-11-20 10:59:59,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states 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 10:59:59,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:59:59,943 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:59:59,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:00,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:00:00,150 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:00:00,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash 739861376, now seen corresponding path program 2 times [2022-11-20 11:00:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:00,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622263734] [2022-11-20 11:00:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:00,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:00:00,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:00,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622263734] [2022-11-20 11:00:00,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622263734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:00,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91509927] [2022-11-20 11:00:00,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:00:00,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:00,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:00,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:00,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:00:00,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:00:00,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:00:00,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:00:00,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:00:00,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:00:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:00:01,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91509927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:00:01,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:00:01,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:00:01,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71049906] [2022-11-20 11:00:01,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:00:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:00:01,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:01,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:00:01,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:00:01,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 187 [2022-11-20 11:00:01,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 166 transitions, 469 flow. Second operand has 18 states, 18 states have (on average 144.72222222222223) internal successors, (2605), 18 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states 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 11:00:01,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:00:01,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 187 [2022-11-20 11:00:01,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:00:02,775 INFO L130 PetriNetUnfolder]: 1225/4643 cut-off events. [2022-11-20 11:00:02,776 INFO L131 PetriNetUnfolder]: For 944/944 co-relation queries the response was YES. [2022-11-20 11:00:02,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9582 conditions, 4643 events. 1225/4643 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 42689 event pairs, 1092 based on Foata normal form. 2/4450 useless extension candidates. Maximal degree in co-relation 9458. Up to 433 conditions per place. [2022-11-20 11:00:02,813 INFO L137 encePairwiseOnDemand]: 176/187 looper letters, 109 selfloop transitions, 25 changer transitions 0/254 dead transitions. [2022-11-20 11:00:02,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 254 transitions, 987 flow [2022-11-20 11:00:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:00:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 11:00:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3520 transitions. [2022-11-20 11:00:02,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2022-11-20 11:00:02,821 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3520 transitions. [2022-11-20 11:00:02,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3520 transitions. [2022-11-20 11:00:02,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:00:02,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3520 transitions. [2022-11-20 11:00:02,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 146.66666666666666) internal successors, (3520), 24 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states 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 11:00:02,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 187.0) internal successors, (4675), 25 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states 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 11:00:02,843 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 187.0) internal successors, (4675), 25 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states 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 11:00:02,843 INFO L175 Difference]: Start difference. First operand has 196 places, 166 transitions, 469 flow. Second operand 24 states and 3520 transitions. [2022-11-20 11:00:02,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 254 transitions, 987 flow [2022-11-20 11:00:02,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 254 transitions, 937 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-11-20 11:00:02,873 INFO L231 Difference]: Finished difference. Result has 201 places, 170 transitions, 508 flow [2022-11-20 11:00:02,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=508, PETRI_PLACES=201, PETRI_TRANSITIONS=170} [2022-11-20 11:00:02,874 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 42 predicate places. [2022-11-20 11:00:02,874 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 170 transitions, 508 flow [2022-11-20 11:00:02,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 144.72222222222223) internal successors, (2605), 18 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states 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 11:00:02,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:00:02,876 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:02,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:03,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 11:00:03,082 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:00:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash 224976142, now seen corresponding path program 1 times [2022-11-20 11:00:03,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:03,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69807312] [2022-11-20 11:00:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:03,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:00:03,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:03,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69807312] [2022-11-20 11:00:03,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69807312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:03,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689496405] [2022-11-20 11:00:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:03,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:03,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:03,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:03,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:00:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:03,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:00:03,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:00:03,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:00:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:00:03,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689496405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:00:03,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:00:03,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 11:00:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124086469] [2022-11-20 11:00:03,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:00:03,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:00:03,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:03,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:00:03,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:00:04,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 187 [2022-11-20 11:00:04,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 170 transitions, 508 flow. Second operand has 23 states, 23 states have (on average 139.69565217391303) internal successors, (3213), 23 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states 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 11:00:04,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:00:04,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 187 [2022-11-20 11:00:04,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:00:07,058 INFO L130 PetriNetUnfolder]: 3760/8351 cut-off events. [2022-11-20 11:00:07,058 INFO L131 PetriNetUnfolder]: For 559/559 co-relation queries the response was YES. [2022-11-20 11:00:07,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19603 conditions, 8351 events. 3760/8351 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 74223 event pairs, 1100 based on Foata normal form. 85/7337 useless extension candidates. Maximal degree in co-relation 12309. Up to 2024 conditions per place. [2022-11-20 11:00:07,128 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 146 selfloop transitions, 32 changer transitions 9/299 dead transitions. [2022-11-20 11:00:07,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 299 transitions, 1235 flow [2022-11-20 11:00:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:00:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 11:00:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3577 transitions. [2022-11-20 11:00:07,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651336898395722 [2022-11-20 11:00:07,145 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3577 transitions. [2022-11-20 11:00:07,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3577 transitions. [2022-11-20 11:00:07,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:00:07,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3577 transitions. [2022-11-20 11:00:07,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 143.08) internal successors, (3577), 25 states have internal predecessors, (3577), 0 states have call successors, (0), 0 states 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 11:00:07,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 11:00:07,176 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 11:00:07,176 INFO L175 Difference]: Start difference. First operand has 201 places, 170 transitions, 508 flow. Second operand 25 states and 3577 transitions. [2022-11-20 11:00:07,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 299 transitions, 1235 flow [2022-11-20 11:00:07,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 299 transitions, 1177 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-20 11:00:07,198 INFO L231 Difference]: Finished difference. Result has 214 places, 184 transitions, 609 flow [2022-11-20 11:00:07,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=609, PETRI_PLACES=214, PETRI_TRANSITIONS=184} [2022-11-20 11:00:07,200 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 55 predicate places. [2022-11-20 11:00:07,200 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 184 transitions, 609 flow [2022-11-20 11:00:07,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 139.69565217391303) internal successors, (3213), 23 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states 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 11:00:07,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:00:07,202 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:07,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:07,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:07,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:00:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1412662976, now seen corresponding path program 1 times [2022-11-20 11:00:07,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:07,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997389412] [2022-11-20 11:00:07,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:07,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:00:07,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:07,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997389412] [2022-11-20 11:00:07,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997389412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:07,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708524835] [2022-11-20 11:00:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:07,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:07,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:07,593 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:07,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:00:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:07,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:00:07,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:00:08,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:00:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:00:08,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708524835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:00:08,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:00:08,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 11:00:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749173044] [2022-11-20 11:00:08,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:00:08,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:00:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:00:08,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:00:08,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 187 [2022-11-20 11:00:08,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 184 transitions, 609 flow. Second operand has 23 states, 23 states have (on average 139.7826086956522) internal successors, (3215), 23 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states 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 11:00:08,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:00:08,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 187 [2022-11-20 11:00:08,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:00:11,622 INFO L130 PetriNetUnfolder]: 5215/10796 cut-off events. [2022-11-20 11:00:11,623 INFO L131 PetriNetUnfolder]: For 2978/3756 co-relation queries the response was YES. [2022-11-20 11:00:11,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28380 conditions, 10796 events. 5215/10796 cut-off events. For 2978/3756 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 98454 event pairs, 1658 based on Foata normal form. 903/11098 useless extension candidates. Maximal degree in co-relation 20387. Up to 3079 conditions per place. [2022-11-20 11:00:11,708 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 116 selfloop transitions, 26 changer transitions 72/330 dead transitions. [2022-11-20 11:00:11,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 330 transitions, 1519 flow [2022-11-20 11:00:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:00:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-20 11:00:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3574 transitions. [2022-11-20 11:00:11,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7644919786096257 [2022-11-20 11:00:11,723 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3574 transitions. [2022-11-20 11:00:11,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3574 transitions. [2022-11-20 11:00:11,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:00:11,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3574 transitions. [2022-11-20 11:00:11,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 142.96) internal successors, (3574), 25 states have internal predecessors, (3574), 0 states have call successors, (0), 0 states 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 11:00:11,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 11:00:11,745 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states 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 11:00:11,746 INFO L175 Difference]: Start difference. First operand has 214 places, 184 transitions, 609 flow. Second operand 25 states and 3574 transitions. [2022-11-20 11:00:11,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 330 transitions, 1519 flow [2022-11-20 11:00:11,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 330 transitions, 1482 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-20 11:00:11,779 INFO L231 Difference]: Finished difference. Result has 233 places, 183 transitions, 641 flow [2022-11-20 11:00:11,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=641, PETRI_PLACES=233, PETRI_TRANSITIONS=183} [2022-11-20 11:00:11,781 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 74 predicate places. [2022-11-20 11:00:11,782 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 183 transitions, 641 flow [2022-11-20 11:00:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 139.7826086956522) internal successors, (3215), 23 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states 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 11:00:11,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:00:11,783 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:11,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:11,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:00:11,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:00:11,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash -272891788, now seen corresponding path program 1 times [2022-11-20 11:00:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:11,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483390047] [2022-11-20 11:00:11,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:11,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 11:00:12,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:12,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483390047] [2022-11-20 11:00:12,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483390047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:12,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263653004] [2022-11-20 11:00:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:12,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:12,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:12,285 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:12,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:00:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:12,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:00:12,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 11:00:12,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:12,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263653004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:12,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:00:12,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:00:12,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463550794] [2022-11-20 11:00:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:12,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:00:12,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:00:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:00:12,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-20 11:00:12,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 183 transitions, 641 flow. Second operand has 6 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 0 states have call successors, (0), 0 states 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 11:00:12,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:00:12,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-20 11:00:12,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:00:13,980 INFO L130 PetriNetUnfolder]: 2026/6664 cut-off events. [2022-11-20 11:00:13,980 INFO L131 PetriNetUnfolder]: For 2730/2760 co-relation queries the response was YES. [2022-11-20 11:00:14,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16286 conditions, 6664 events. 2026/6664 cut-off events. For 2730/2760 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 67089 event pairs, 390 based on Foata normal form. 110/6624 useless extension candidates. Maximal degree in co-relation 11978. Up to 1145 conditions per place. [2022-11-20 11:00:14,033 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 42 selfloop transitions, 8 changer transitions 0/206 dead transitions. [2022-11-20 11:00:14,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 206 transitions, 800 flow [2022-11-20 11:00:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:00:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:00:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1153 transitions. [2022-11-20 11:00:14,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8808250572956455 [2022-11-20 11:00:14,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1153 transitions. [2022-11-20 11:00:14,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1153 transitions. [2022-11-20 11:00:14,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:00:14,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1153 transitions. [2022-11-20 11:00:14,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.71428571428572) internal successors, (1153), 7 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states 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 11:00:14,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 11:00:14,044 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 11:00:14,044 INFO L175 Difference]: Start difference. First operand has 233 places, 183 transitions, 641 flow. Second operand 7 states and 1153 transitions. [2022-11-20 11:00:14,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 206 transitions, 800 flow [2022-11-20 11:00:14,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 206 transitions, 759 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-11-20 11:00:14,082 INFO L231 Difference]: Finished difference. Result has 212 places, 181 transitions, 604 flow [2022-11-20 11:00:14,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=212, PETRI_TRANSITIONS=181} [2022-11-20 11:00:14,084 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 53 predicate places. [2022-11-20 11:00:14,084 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 181 transitions, 604 flow [2022-11-20 11:00:14,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 0 states have call successors, (0), 0 states 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 11:00:14,084 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:00:14,085 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:14,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:14,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:14,295 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:00:14,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1132596999, now seen corresponding path program 2 times [2022-11-20 11:00:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:14,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134699634] [2022-11-20 11:00:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:14,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:00:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:14,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134699634] [2022-11-20 11:00:14,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134699634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:14,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139839281] [2022-11-20 11:00:14,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:00:14,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:14,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:14,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:00:14,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:00:14,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:00:14,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:00:14,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:00:15,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:00:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:00:15,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139839281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:00:15,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:00:15,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-20 11:00:15,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205424250] [2022-11-20 11:00:15,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:00:15,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:00:15,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:00:15,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:00:15,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 187 [2022-11-20 11:00:15,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 181 transitions, 604 flow. Second operand has 19 states, 19 states have (on average 137.31578947368422) internal successors, (2609), 19 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states 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 11:00:15,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:00:15,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 187 [2022-11-20 11:00:15,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:00:18,153 INFO L130 PetriNetUnfolder]: 4160/10448 cut-off events. [2022-11-20 11:00:18,153 INFO L131 PetriNetUnfolder]: For 4722/5479 co-relation queries the response was YES. [2022-11-20 11:00:18,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27142 conditions, 10448 events. 4160/10448 cut-off events. For 4722/5479 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 102232 event pairs, 760 based on Foata normal form. 754/10987 useless extension candidates. Maximal degree in co-relation 19149. Up to 1980 conditions per place. [2022-11-20 11:00:18,226 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 138 selfloop transitions, 38 changer transitions 50/337 dead transitions. [2022-11-20 11:00:18,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 337 transitions, 1613 flow [2022-11-20 11:00:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:00:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:00:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4168 transitions. [2022-11-20 11:00:18,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7429590017825312 [2022-11-20 11:00:18,238 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4168 transitions. [2022-11-20 11:00:18,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4168 transitions. [2022-11-20 11:00:18,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:00:18,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4168 transitions. [2022-11-20 11:00:18,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 138.93333333333334) internal successors, (4168), 30 states have internal predecessors, (4168), 0 states have call successors, (0), 0 states 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 11:00:18,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 187.0) internal successors, (5797), 31 states have internal predecessors, (5797), 0 states have call successors, (0), 0 states 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 11:00:18,266 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 187.0) internal successors, (5797), 31 states have internal predecessors, (5797), 0 states have call successors, (0), 0 states 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 11:00:18,266 INFO L175 Difference]: Start difference. First operand has 212 places, 181 transitions, 604 flow. Second operand 30 states and 4168 transitions. [2022-11-20 11:00:18,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 337 transitions, 1613 flow [2022-11-20 11:00:18,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 337 transitions, 1587 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 11:00:18,325 INFO L231 Difference]: Finished difference. Result has 237 places, 187 transitions, 728 flow [2022-11-20 11:00:18,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=728, PETRI_PLACES=237, PETRI_TRANSITIONS=187} [2022-11-20 11:00:18,328 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 78 predicate places. [2022-11-20 11:00:18,328 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 187 transitions, 728 flow [2022-11-20 11:00:18,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.31578947368422) internal successors, (2609), 19 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states 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 11:00:18,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:00:18,330 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:18,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:18,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:18,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:00:18,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:18,538 INFO L85 PathProgramCache]: Analyzing trace with hash -391017646, now seen corresponding path program 1 times [2022-11-20 11:00:18,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:18,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955993505] [2022-11-20 11:00:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:18,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 11:00:18,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:18,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955993505] [2022-11-20 11:00:18,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955993505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:18,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607946567] [2022-11-20 11:00:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:18,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:18,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:18,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:18,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:00:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:00:18,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 11:00:19,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:19,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607946567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:19,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:00:19,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:00:19,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696817659] [2022-11-20 11:00:19,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:19,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:00:19,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:00:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:00:19,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-20 11:00:19,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 187 transitions, 728 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states 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 11:00:19,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:00:19,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-20 11:00:19,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:00:19,778 INFO L130 PetriNetUnfolder]: 1890/4227 cut-off events. [2022-11-20 11:00:19,778 INFO L131 PetriNetUnfolder]: For 1899/1899 co-relation queries the response was YES. [2022-11-20 11:00:19,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11087 conditions, 4227 events. 1890/4227 cut-off events. For 1899/1899 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 36686 event pairs, 115 based on Foata normal form. 126/4189 useless extension candidates. Maximal degree in co-relation 8646. Up to 1260 conditions per place. [2022-11-20 11:00:19,812 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 38 selfloop transitions, 8 changer transitions 0/209 dead transitions. [2022-11-20 11:00:19,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 209 transitions, 869 flow [2022-11-20 11:00:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:00:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:00:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1150 transitions. [2022-11-20 11:00:19,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.878533231474408 [2022-11-20 11:00:19,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1150 transitions. [2022-11-20 11:00:19,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1150 transitions. [2022-11-20 11:00:19,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:00:19,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1150 transitions. [2022-11-20 11:00:19,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.28571428571428) internal successors, (1150), 7 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:00:19,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 11:00:19,821 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 11:00:19,821 INFO L175 Difference]: Start difference. First operand has 237 places, 187 transitions, 728 flow. Second operand 7 states and 1150 transitions. [2022-11-20 11:00:19,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 209 transitions, 869 flow [2022-11-20 11:00:19,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 209 transitions, 819 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-11-20 11:00:19,842 INFO L231 Difference]: Finished difference. Result has 222 places, 185 transitions, 680 flow [2022-11-20 11:00:19,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=222, PETRI_TRANSITIONS=185} [2022-11-20 11:00:19,844 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 63 predicate places. [2022-11-20 11:00:19,844 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 185 transitions, 680 flow [2022-11-20 11:00:19,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states 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 11:00:19,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:00:19,845 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:19,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:20,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:20,051 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:00:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2122194089, now seen corresponding path program 2 times [2022-11-20 11:00:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:20,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863271102] [2022-11-20 11:00:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:00:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:20,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863271102] [2022-11-20 11:00:20,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863271102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:20,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978773333] [2022-11-20 11:00:20,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:00:20,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:20,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:20,410 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:20,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:00:20,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:00:20,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:00:20,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:00:20,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:00:20,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:00:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:00:20,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978773333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:00:20,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:00:20,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-20 11:00:20,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70683431] [2022-11-20 11:00:20,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:00:20,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:00:20,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:00:20,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:00:20,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 187 [2022-11-20 11:00:20,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 185 transitions, 680 flow. Second operand has 19 states, 19 states have (on average 137.42105263157896) internal successors, (2611), 19 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states 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 11:00:20,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:00:20,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 187 [2022-11-20 11:00:20,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:00:23,056 INFO L130 PetriNetUnfolder]: 3654/7952 cut-off events. [2022-11-20 11:00:23,057 INFO L131 PetriNetUnfolder]: For 7480/8892 co-relation queries the response was YES. [2022-11-20 11:00:23,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23835 conditions, 7952 events. 3654/7952 cut-off events. For 7480/8892 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 70373 event pairs, 720 based on Foata normal form. 1533/9306 useless extension candidates. Maximal degree in co-relation 17141. Up to 2124 conditions per place. [2022-11-20 11:00:23,087 INFO L137 encePairwiseOnDemand]: 170/187 looper letters, 0 selfloop transitions, 0 changer transitions 302/302 dead transitions. [2022-11-20 11:00:23,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 302 transitions, 1572 flow [2022-11-20 11:00:23,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:00:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-20 11:00:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3604 transitions. [2022-11-20 11:00:23,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7412587412587412 [2022-11-20 11:00:23,095 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3604 transitions. [2022-11-20 11:00:23,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3604 transitions. [2022-11-20 11:00:23,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:00:23,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3604 transitions. [2022-11-20 11:00:23,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 138.6153846153846) internal successors, (3604), 26 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states 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 11:00:23,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 187.0) internal successors, (5049), 27 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states 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 11:00:23,113 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 187.0) internal successors, (5049), 27 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states 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 11:00:23,113 INFO L175 Difference]: Start difference. First operand has 222 places, 185 transitions, 680 flow. Second operand 26 states and 3604 transitions. [2022-11-20 11:00:23,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 302 transitions, 1572 flow [2022-11-20 11:00:23,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 302 transitions, 1546 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 11:00:23,165 INFO L231 Difference]: Finished difference. Result has 240 places, 0 transitions, 0 flow [2022-11-20 11:00:23,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=0, PETRI_PLACES=240, PETRI_TRANSITIONS=0} [2022-11-20 11:00:23,166 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 81 predicate places. [2022-11-20 11:00:23,167 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 0 transitions, 0 flow [2022-11-20 11:00:23,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.42105263157896) internal successors, (2611), 19 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states 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 11:00:23,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-11-20 11:00:23,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 11:00:23,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 11:00:23,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 11:00:23,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 11:00:23,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 11:00:23,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-11-20 11:00:23,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-11-20 11:00:23,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-11-20 11:00:23,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 11:00:23,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 11:00:23,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 11:00:23,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 11:00:23,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:23,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:00:23,379 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:23,384 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:00:23,384 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:00:23,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:00:23 BasicIcfg [2022-11-20 11:00:23,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:00:23,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:00:23,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:00:23,389 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:00:23,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:59:50" (3/4) ... [2022-11-20 11:00:23,392 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:00:23,396 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 11:00:23,397 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 11:00:23,397 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 11:00:23,402 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-20 11:00:23,402 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:00:23,403 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:00:23,403 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:00:23,457 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:00:23,457 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:00:23,458 INFO L158 Benchmark]: Toolchain (without parser) took 33962.76ms. Allocated memory was 176.2MB in the beginning and 5.3GB in the end (delta: 5.2GB). Free memory was 130.7MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 769.2MB. Max. memory is 16.1GB. [2022-11-20 11:00:23,459 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:00:23,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.93ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 118.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:00:23,459 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.18ms. Allocated memory is still 176.2MB. Free memory was 118.1MB in the beginning and 116.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:00:23,460 INFO L158 Benchmark]: Boogie Preprocessor took 31.49ms. Allocated memory is still 176.2MB. Free memory was 116.5MB in the beginning and 115.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:00:23,460 INFO L158 Benchmark]: RCFGBuilder took 824.82ms. Allocated memory is still 176.2MB. Free memory was 115.0MB in the beginning and 93.0MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 11:00:23,460 INFO L158 Benchmark]: TraceAbstraction took 32695.76ms. Allocated memory was 176.2MB in the beginning and 5.3GB in the end (delta: 5.2GB). Free memory was 91.9MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 901.3MB. Max. memory is 16.1GB. [2022-11-20 11:00:23,461 INFO L158 Benchmark]: Witness Printer took 68.39ms. Allocated memory is still 5.3GB. Free memory was 4.5GB in the beginning and 4.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:00:23,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.93ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 118.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.18ms. Allocated memory is still 176.2MB. Free memory was 118.1MB in the beginning and 116.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.49ms. Allocated memory is still 176.2MB. Free memory was 116.5MB in the beginning and 115.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 824.82ms. Allocated memory is still 176.2MB. Free memory was 115.0MB in the beginning and 93.0MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 32695.76ms. Allocated memory was 176.2MB in the beginning and 5.3GB in the end (delta: 5.2GB). Free memory was 91.9MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 901.3MB. Max. memory is 16.1GB. * Witness Printer took 68.39ms. Allocated memory is still 5.3GB. Free memory was 4.5GB in the beginning and 4.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 213 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.5s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 21.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2948 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2948 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 384 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3853 IncrementalHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 94 mSDtfsCounter, 3853 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2055 GetRequests, 1757 SyntacticMatches, 13 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=728occurred in iteration=12, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 2616 NumberOfCodeBlocks, 2516 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 3242 ConstructedInterpolants, 0 QuantifiedInterpolants, 6448 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2346 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 8 PerfectInterpolantSequences, 299/532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:00:23,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987f32cf-1292-4fdd-9134-e2ccc55f30cf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE