./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a --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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- 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-b5237d8 [2022-11-21 16:37:54,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:37:54,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:37:54,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:37:54,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:37:54,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:37:54,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:37:54,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:37:54,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:37:54,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:37:54,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:37:54,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:37:54,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:37:54,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:37:54,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:37:54,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:37:54,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:37:54,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:37:54,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:37:54,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:37:54,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:37:54,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:37:54,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:37:54,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:37:54,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:37:54,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:37:54,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:37:54,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:37:54,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:37:54,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:37:54,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:37:54,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:37:54,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:37:54,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:37:54,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:37:54,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:37:54,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:37:54,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:37:54,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:37:54,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:37:54,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:37:54,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:37:54,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:37:54,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:37:54,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:37:54,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:37:54,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:37:54,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:37:54,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:37:54,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:37:54,755 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:37:54,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:37:54,756 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:37:54,756 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:37:54,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:37:54,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:37:54,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:37:54,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:37:54,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:37:54,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:37:54,757 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:37:54,757 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:37:54,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:37:54,758 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:37:54,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:37:54,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:37:54,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:37:54,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:37:54,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:37:54,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:37:54,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:37:54,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:37:54,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:37:54,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:37:54,760 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:37:54,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:37:54,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:37:54,761 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_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2022-11-21 16:37:55,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:37:55,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:37:55,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:37:55,075 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:37:55,075 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:37:55,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-21 16:37:58,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:37:58,224 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:37:58,224 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-21 16:37:58,232 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/data/ef9613343/0141814de3a141cda84c6b77edda8207/FLAG7bba881b0 [2022-11-21 16:37:58,250 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/data/ef9613343/0141814de3a141cda84c6b77edda8207 [2022-11-21 16:37:58,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:37:58,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:37:58,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:37:58,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:37:58,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:37:58,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f098721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58, skipping insertion in model container [2022-11-21 16:37:58,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:37:58,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:37:58,573 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_d522e5cc-8728-4f1d-94ea-41d999ba2626/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-21 16:37:58,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:37:58,602 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:37:58,643 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_d522e5cc-8728-4f1d-94ea-41d999ba2626/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-21 16:37:58,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:37:58,663 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:37:58,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58 WrapperNode [2022-11-21 16:37:58,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:37:58,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:37:58,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:37:58,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:37:58,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,738 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 277 [2022-11-21 16:37:58,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:37:58,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:37:58,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:37:58,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:37:58,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,789 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:37:58,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:37:58,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:37:58,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:37:58,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (1/1) ... [2022-11-21 16:37:58,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:37:58,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:37:58,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:37:58,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:37:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:37:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:37:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:37:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:37:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:37:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:37:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:37:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:37:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:37:58,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:37:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:37:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:37:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:37:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:37:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:37:58,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:37:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:37:58,886 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:37:59,001 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:37:59,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:37:59,592 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:37:59,841 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:37:59,842 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-21 16:37:59,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:37:59 BoogieIcfgContainer [2022-11-21 16:37:59,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:37:59,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:37:59,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:37:59,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:37:59,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:37:58" (1/3) ... [2022-11-21 16:37:59,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e7cfd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:37:59, skipping insertion in model container [2022-11-21 16:37:59,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:37:58" (2/3) ... [2022-11-21 16:37:59,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e7cfd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:37:59, skipping insertion in model container [2022-11-21 16:37:59,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:37:59" (3/3) ... [2022-11-21 16:37:59,864 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-11-21 16:37:59,871 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:37:59,880 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:37:59,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-21 16:37:59,881 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:38:00,004 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:38:00,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 252 transitions, 528 flow [2022-11-21 16:38:00,163 INFO L130 PetriNetUnfolder]: 18/249 cut-off events. [2022-11-21 16:38:00,164 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:38:00,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 249 events. 18/249 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 232 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 204. Up to 3 conditions per place. [2022-11-21 16:38:00,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 252 transitions, 528 flow [2022-11-21 16:38:00,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 228 transitions, 471 flow [2022-11-21 16:38:00,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:38:00,195 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;@a9b937f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:38:00,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-21 16:38:00,215 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-11-21 16:38:00,217 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:38:00,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:00,219 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] [2022-11-21 16:38:00,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:00,227 INFO L85 PathProgramCache]: Analyzing trace with hash -688142939, now seen corresponding path program 1 times [2022-11-21 16:38:00,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:00,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015637848] [2022-11-21 16:38:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:00,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:00,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:00,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015637848] [2022-11-21 16:38:00,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015637848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:38:00,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:38:00,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:38:00,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177900574] [2022-11-21 16:38:00,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:38:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:38:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:00,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:38:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:38:00,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 252 [2022-11-21 16:38:00,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 228 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:00,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:00,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 252 [2022-11-21 16:38:00,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:01,480 INFO L130 PetriNetUnfolder]: 585/1775 cut-off events. [2022-11-21 16:38:01,481 INFO L131 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2022-11-21 16:38:01,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 1775 events. 585/1775 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11882 event pairs, 328 based on Foata normal form. 212/1329 useless extension candidates. Maximal degree in co-relation 1220. Up to 437 conditions per place. [2022-11-21 16:38:01,507 INFO L137 encePairwiseOnDemand]: 222/252 looper letters, 62 selfloop transitions, 9 changer transitions 5/243 dead transitions. [2022-11-21 16:38:01,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 243 transitions, 658 flow [2022-11-21 16:38:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:38:01,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:38:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1070 transitions. [2022-11-21 16:38:01,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8492063492063492 [2022-11-21 16:38:01,531 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1070 transitions. [2022-11-21 16:38:01,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1070 transitions. [2022-11-21 16:38:01,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:01,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1070 transitions. [2022-11-21 16:38:01,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:01,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:01,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:01,557 INFO L175 Difference]: Start difference. First operand has 221 places, 228 transitions, 471 flow. Second operand 5 states and 1070 transitions. [2022-11-21 16:38:01,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 243 transitions, 658 flow [2022-11-21 16:38:01,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 243 transitions, 640 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:38:01,573 INFO L231 Difference]: Finished difference. Result has 218 places, 213 transitions, 485 flow [2022-11-21 16:38:01,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=485, PETRI_PLACES=218, PETRI_TRANSITIONS=213} [2022-11-21 16:38:01,580 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, -3 predicate places. [2022-11-21 16:38:01,581 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 213 transitions, 485 flow [2022-11-21 16:38:01,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.5) internal successors, (778), 4 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:01,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:01,583 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, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:01,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:38:01,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:01,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1157477657, now seen corresponding path program 1 times [2022-11-21 16:38:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:01,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568132256] [2022-11-21 16:38:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:01,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:01,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:01,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568132256] [2022-11-21 16:38:01,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568132256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:38:01,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050859486] [2022-11-21 16:38:01,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:01,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:01,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:38:01,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:38:01,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:38:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:01,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:38:01,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:02,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:38:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:02,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050859486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:38:02,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:38:02,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:38:02,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082386531] [2022-11-21 16:38:02,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:38:02,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:38:02,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:02,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:38:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:38:02,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 252 [2022-11-21 16:38:02,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 213 transitions, 485 flow. Second operand has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:02,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:02,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 252 [2022-11-21 16:38:02,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:03,626 INFO L130 PetriNetUnfolder]: 1461/4290 cut-off events. [2022-11-21 16:38:03,626 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2022-11-21 16:38:03,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 4290 events. 1461/4290 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 33554 event pairs, 820 based on Foata normal form. 6/2676 useless extension candidates. Maximal degree in co-relation 5204. Up to 430 conditions per place. [2022-11-21 16:38:03,672 INFO L137 encePairwiseOnDemand]: 237/252 looper letters, 131 selfloop transitions, 40 changer transitions 0/338 dead transitions. [2022-11-21 16:38:03,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 338 transitions, 1151 flow [2022-11-21 16:38:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:38:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:38:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3651 transitions. [2022-11-21 16:38:03,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8048941798941799 [2022-11-21 16:38:03,682 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3651 transitions. [2022-11-21 16:38:03,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3651 transitions. [2022-11-21 16:38:03,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:03,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3651 transitions. [2022-11-21 16:38:03,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 202.83333333333334) internal successors, (3651), 18 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:03,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:03,709 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:03,709 INFO L175 Difference]: Start difference. First operand has 218 places, 213 transitions, 485 flow. Second operand 18 states and 3651 transitions. [2022-11-21 16:38:03,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 338 transitions, 1151 flow [2022-11-21 16:38:03,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 338 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:38:03,719 INFO L231 Difference]: Finished difference. Result has 233 places, 240 transitions, 718 flow [2022-11-21 16:38:03,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=718, PETRI_PLACES=233, PETRI_TRANSITIONS=240} [2022-11-21 16:38:03,721 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 12 predicate places. [2022-11-21 16:38:03,721 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 240 transitions, 718 flow [2022-11-21 16:38:03,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 195.66666666666666) internal successors, (2348), 12 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:03,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:03,723 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, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:03,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:38:03,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:03,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:03,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:03,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1522069764, now seen corresponding path program 1 times [2022-11-21 16:38:03,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:03,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466906842] [2022-11-21 16:38:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:03,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:04,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:04,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466906842] [2022-11-21 16:38:04,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466906842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:38:04,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736163793] [2022-11-21 16:38:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:04,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:04,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:38:04,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:38:04,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:38:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:04,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:38:04,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:04,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:38:04,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736163793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:38:04,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:38:04,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:38:04,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021407005] [2022-11-21 16:38:04,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:38:04,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:38:04,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:04,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:38:04,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:38:04,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 252 [2022-11-21 16:38:04,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 240 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:04,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:04,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 252 [2022-11-21 16:38:04,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:05,387 INFO L130 PetriNetUnfolder]: 1461/4282 cut-off events. [2022-11-21 16:38:05,388 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2022-11-21 16:38:05,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6816 conditions, 4282 events. 1461/4282 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 33549 event pairs, 820 based on Foata normal form. 8/2670 useless extension candidates. Maximal degree in co-relation 5426. Up to 1676 conditions per place. [2022-11-21 16:38:05,427 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 63 selfloop transitions, 27 changer transitions 0/257 dead transitions. [2022-11-21 16:38:05,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 257 transitions, 904 flow [2022-11-21 16:38:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:38:05,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:38:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1422 transitions. [2022-11-21 16:38:05,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8061224489795918 [2022-11-21 16:38:05,431 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1422 transitions. [2022-11-21 16:38:05,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1422 transitions. [2022-11-21 16:38:05,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:05,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1422 transitions. [2022-11-21 16:38:05,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 203.14285714285714) internal successors, (1422), 7 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:05,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:05,440 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:05,440 INFO L175 Difference]: Start difference. First operand has 233 places, 240 transitions, 718 flow. Second operand 7 states and 1422 transitions. [2022-11-21 16:38:05,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 257 transitions, 904 flow [2022-11-21 16:38:05,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 257 transitions, 830 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-21 16:38:05,515 INFO L231 Difference]: Finished difference. Result has 228 places, 232 transitions, 644 flow [2022-11-21 16:38:05,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=644, PETRI_PLACES=228, PETRI_TRANSITIONS=232} [2022-11-21 16:38:05,517 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 7 predicate places. [2022-11-21 16:38:05,517 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 232 transitions, 644 flow [2022-11-21 16:38:05,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:05,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:05,520 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, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:05,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:38:05,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:05,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash -97490267, now seen corresponding path program 2 times [2022-11-21 16:38:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:05,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707297861] [2022-11-21 16:38:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:05,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:06,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707297861] [2022-11-21 16:38:06,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707297861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:38:06,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032688898] [2022-11-21 16:38:06,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:38:06,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:06,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:38:06,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:38:06,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:38:06,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:38:06,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:38:06,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:38:06,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:38:06,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:38:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:38:06,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032688898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:38:06,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:38:06,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 16:38:06,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121321523] [2022-11-21 16:38:06,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:38:06,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:38:06,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:38:06,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:38:06,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 252 [2022-11-21 16:38:06,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 232 transitions, 644 flow. Second operand has 18 states, 18 states have (on average 181.61111111111111) internal successors, (3269), 18 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:06,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:06,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 252 [2022-11-21 16:38:06,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:08,612 INFO L130 PetriNetUnfolder]: 897/3698 cut-off events. [2022-11-21 16:38:08,613 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-21 16:38:08,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 3698 events. 897/3698 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 29205 event pairs, 546 based on Foata normal form. 4/2771 useless extension candidates. Maximal degree in co-relation 4386. Up to 231 conditions per place. [2022-11-21 16:38:08,646 INFO L137 encePairwiseOnDemand]: 229/252 looper letters, 156 selfloop transitions, 65 changer transitions 0/373 dead transitions. [2022-11-21 16:38:08,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 373 transitions, 1463 flow [2022-11-21 16:38:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 16:38:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-21 16:38:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 8968 transitions. [2022-11-21 16:38:08,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7262714609653386 [2022-11-21 16:38:08,664 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 8968 transitions. [2022-11-21 16:38:08,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 8968 transitions. [2022-11-21 16:38:08,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:08,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 8968 transitions. [2022-11-21 16:38:08,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 183.0204081632653) internal successors, (8968), 49 states have internal predecessors, (8968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:08,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 252.0) internal successors, (12600), 50 states have internal predecessors, (12600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:08,777 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 252.0) internal successors, (12600), 50 states have internal predecessors, (12600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:08,777 INFO L175 Difference]: Start difference. First operand has 228 places, 232 transitions, 644 flow. Second operand 49 states and 8968 transitions. [2022-11-21 16:38:08,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 373 transitions, 1463 flow [2022-11-21 16:38:08,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 373 transitions, 1420 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:38:08,786 INFO L231 Difference]: Finished difference. Result has 271 places, 254 transitions, 853 flow [2022-11-21 16:38:08,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=853, PETRI_PLACES=271, PETRI_TRANSITIONS=254} [2022-11-21 16:38:08,787 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 50 predicate places. [2022-11-21 16:38:08,788 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 254 transitions, 853 flow [2022-11-21 16:38:08,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 181.61111111111111) internal successors, (3269), 18 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:08,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:08,790 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:08,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:38:08,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:08,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:08,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1256211469, now seen corresponding path program 1 times [2022-11-21 16:38:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:08,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889765691] [2022-11-21 16:38:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:09,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:09,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889765691] [2022-11-21 16:38:09,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889765691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:38:09,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:38:09,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:38:09,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092494673] [2022-11-21 16:38:09,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:38:09,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:38:09,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:38:09,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:38:09,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 252 [2022-11-21 16:38:09,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 254 transitions, 853 flow. Second operand has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:09,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:09,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 252 [2022-11-21 16:38:09,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:11,627 INFO L130 PetriNetUnfolder]: 4530/10397 cut-off events. [2022-11-21 16:38:11,628 INFO L131 PetriNetUnfolder]: For 362/362 co-relation queries the response was YES. [2022-11-21 16:38:11,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19134 conditions, 10397 events. 4530/10397 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 90790 event pairs, 2121 based on Foata normal form. 0/7807 useless extension candidates. Maximal degree in co-relation 18845. Up to 4124 conditions per place. [2022-11-21 16:38:11,722 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 50 selfloop transitions, 4 changer transitions 0/286 dead transitions. [2022-11-21 16:38:11,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 286 transitions, 1036 flow [2022-11-21 16:38:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:38:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:38:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1091 transitions. [2022-11-21 16:38:11,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8658730158730159 [2022-11-21 16:38:11,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1091 transitions. [2022-11-21 16:38:11,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1091 transitions. [2022-11-21 16:38:11,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:11,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1091 transitions. [2022-11-21 16:38:11,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:11,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:11,732 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:11,732 INFO L175 Difference]: Start difference. First operand has 271 places, 254 transitions, 853 flow. Second operand 5 states and 1091 transitions. [2022-11-21 16:38:11,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 286 transitions, 1036 flow [2022-11-21 16:38:11,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 286 transitions, 953 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-21 16:38:11,740 INFO L231 Difference]: Finished difference. Result has 263 places, 257 transitions, 800 flow [2022-11-21 16:38:11,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=800, PETRI_PLACES=263, PETRI_TRANSITIONS=257} [2022-11-21 16:38:11,741 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 42 predicate places. [2022-11-21 16:38:11,742 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 257 transitions, 800 flow [2022-11-21 16:38:11,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:11,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:11,743 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:11,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:38:11,743 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:11,744 INFO L85 PathProgramCache]: Analyzing trace with hash -710039529, now seen corresponding path program 1 times [2022-11-21 16:38:11,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:11,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370649813] [2022-11-21 16:38:11,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:11,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:11,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370649813] [2022-11-21 16:38:11,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370649813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:38:11,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:38:11,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:38:11,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242634815] [2022-11-21 16:38:11,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:38:11,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:38:11,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:11,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:38:11,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:38:11,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 252 [2022-11-21 16:38:11,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 257 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:11,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:11,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 252 [2022-11-21 16:38:11,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:12,968 INFO L130 PetriNetUnfolder]: 1115/5106 cut-off events. [2022-11-21 16:38:12,968 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2022-11-21 16:38:12,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7878 conditions, 5106 events. 1115/5106 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 47244 event pairs, 905 based on Foata normal form. 24/4054 useless extension candidates. Maximal degree in co-relation 7558. Up to 1757 conditions per place. [2022-11-21 16:38:13,015 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 73 selfloop transitions, 13 changer transitions 2/266 dead transitions. [2022-11-21 16:38:13,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 266 transitions, 999 flow [2022-11-21 16:38:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:38:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:38:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1391 transitions. [2022-11-21 16:38:13,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7885487528344671 [2022-11-21 16:38:13,019 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1391 transitions. [2022-11-21 16:38:13,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1391 transitions. [2022-11-21 16:38:13,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:13,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1391 transitions. [2022-11-21 16:38:13,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.71428571428572) internal successors, (1391), 7 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:13,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:13,026 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:13,027 INFO L175 Difference]: Start difference. First operand has 263 places, 257 transitions, 800 flow. Second operand 7 states and 1391 transitions. [2022-11-21 16:38:13,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 266 transitions, 999 flow [2022-11-21 16:38:13,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 266 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:38:13,035 INFO L231 Difference]: Finished difference. Result has 269 places, 257 transitions, 833 flow [2022-11-21 16:38:13,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=833, PETRI_PLACES=269, PETRI_TRANSITIONS=257} [2022-11-21 16:38:13,036 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 48 predicate places. [2022-11-21 16:38:13,036 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 257 transitions, 833 flow [2022-11-21 16:38:13,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:13,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:13,037 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:38:13,038 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:13,038 INFO L85 PathProgramCache]: Analyzing trace with hash -284393048, now seen corresponding path program 1 times [2022-11-21 16:38:13,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320682008] [2022-11-21 16:38:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:13,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:13,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320682008] [2022-11-21 16:38:13,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320682008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:38:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743085358] [2022-11-21 16:38:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:13,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:13,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:38:13,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:38:13,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:38:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:13,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:38:13,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:38:13,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:38:13,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743085358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:38:13,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:38:13,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-11-21 16:38:13,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090744539] [2022-11-21 16:38:13,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:38:13,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:38:13,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:13,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:38:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:38:13,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 252 [2022-11-21 16:38:13,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 257 transitions, 833 flow. Second operand has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:13,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:13,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 252 [2022-11-21 16:38:13,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:14,679 INFO L130 PetriNetUnfolder]: 1121/5538 cut-off events. [2022-11-21 16:38:14,679 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2022-11-21 16:38:14,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9148 conditions, 5538 events. 1121/5538 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 51559 event pairs, 905 based on Foata normal form. 92/4523 useless extension candidates. Maximal degree in co-relation 8211. Up to 1822 conditions per place. [2022-11-21 16:38:14,730 INFO L137 encePairwiseOnDemand]: 240/252 looper letters, 93 selfloop transitions, 21 changer transitions 1/293 dead transitions. [2022-11-21 16:38:14,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 293 transitions, 1224 flow [2022-11-21 16:38:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:38:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:38:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1782 transitions. [2022-11-21 16:38:14,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2022-11-21 16:38:14,735 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1782 transitions. [2022-11-21 16:38:14,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1782 transitions. [2022-11-21 16:38:14,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:14,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1782 transitions. [2022-11-21 16:38:14,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:14,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:14,745 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:14,745 INFO L175 Difference]: Start difference. First operand has 269 places, 257 transitions, 833 flow. Second operand 9 states and 1782 transitions. [2022-11-21 16:38:14,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 293 transitions, 1224 flow [2022-11-21 16:38:14,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 293 transitions, 1192 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:38:14,755 INFO L231 Difference]: Finished difference. Result has 274 places, 258 transitions, 866 flow [2022-11-21 16:38:14,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=866, PETRI_PLACES=274, PETRI_TRANSITIONS=258} [2022-11-21 16:38:14,757 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 53 predicate places. [2022-11-21 16:38:14,757 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 258 transitions, 866 flow [2022-11-21 16:38:14,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:14,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:14,758 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:14,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:38:14,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:14,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1504716212, now seen corresponding path program 1 times [2022-11-21 16:38:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:14,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780909883] [2022-11-21 16:38:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:38:15,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:15,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780909883] [2022-11-21 16:38:15,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780909883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:38:15,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377839590] [2022-11-21 16:38:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:15,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:15,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:38:15,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:38:15,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:38:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:15,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:38:15,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:15,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:38:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:15,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377839590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:38:15,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:38:15,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-21 16:38:15,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463142239] [2022-11-21 16:38:15,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:38:15,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:38:15,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:38:15,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:38:15,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 252 [2022-11-21 16:38:15,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 258 transitions, 866 flow. Second operand has 19 states, 19 states have (on average 174.21052631578948) internal successors, (3310), 19 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:15,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:15,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 252 [2022-11-21 16:38:15,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:20,706 INFO L130 PetriNetUnfolder]: 8175/20680 cut-off events. [2022-11-21 16:38:20,706 INFO L131 PetriNetUnfolder]: For 6201/6559 co-relation queries the response was YES. [2022-11-21 16:38:20,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47170 conditions, 20680 events. 8175/20680 cut-off events. For 6201/6559 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 211142 event pairs, 1915 based on Foata normal form. 469/16563 useless extension candidates. Maximal degree in co-relation 39580. Up to 4657 conditions per place. [2022-11-21 16:38:20,923 INFO L137 encePairwiseOnDemand]: 229/252 looper letters, 279 selfloop transitions, 57 changer transitions 2/481 dead transitions. [2022-11-21 16:38:20,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 481 transitions, 2466 flow [2022-11-21 16:38:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 16:38:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 16:38:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5318 transitions. [2022-11-21 16:38:20,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7034391534391534 [2022-11-21 16:38:20,939 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5318 transitions. [2022-11-21 16:38:20,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5318 transitions. [2022-11-21 16:38:20,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:20,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5318 transitions. [2022-11-21 16:38:20,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 177.26666666666668) internal successors, (5318), 30 states have internal predecessors, (5318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:20,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 252.0) internal successors, (7812), 31 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:20,971 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 252.0) internal successors, (7812), 31 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:20,971 INFO L175 Difference]: Start difference. First operand has 274 places, 258 transitions, 866 flow. Second operand 30 states and 5318 transitions. [2022-11-21 16:38:20,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 481 transitions, 2466 flow [2022-11-21 16:38:21,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 481 transitions, 2438 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:38:21,022 INFO L231 Difference]: Finished difference. Result has 309 places, 282 transitions, 1173 flow [2022-11-21 16:38:21,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1173, PETRI_PLACES=309, PETRI_TRANSITIONS=282} [2022-11-21 16:38:21,025 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 88 predicate places. [2022-11-21 16:38:21,025 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 282 transitions, 1173 flow [2022-11-21 16:38:21,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 174.21052631578948) internal successors, (3310), 19 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:21,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:21,027 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:21,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:38:21,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:21,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:21,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:21,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1188161977, now seen corresponding path program 1 times [2022-11-21 16:38:21,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:21,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359932562] [2022-11-21 16:38:21,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:21,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:38:21,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:21,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359932562] [2022-11-21 16:38:21,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359932562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:38:21,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:38:21,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:38:21,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113363888] [2022-11-21 16:38:21,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:38:21,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:38:21,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:21,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:38:21,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:38:21,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 252 [2022-11-21 16:38:21,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 282 transitions, 1173 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:21,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:21,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 252 [2022-11-21 16:38:21,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:23,347 INFO L130 PetriNetUnfolder]: 2698/11071 cut-off events. [2022-11-21 16:38:23,347 INFO L131 PetriNetUnfolder]: For 11786/12338 co-relation queries the response was YES. [2022-11-21 16:38:23,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24778 conditions, 11071 events. 2698/11071 cut-off events. For 11786/12338 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 116055 event pairs, 871 based on Foata normal form. 401/8658 useless extension candidates. Maximal degree in co-relation 20810. Up to 3262 conditions per place. [2022-11-21 16:38:23,480 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 25 selfloop transitions, 2 changer transitions 1/289 dead transitions. [2022-11-21 16:38:23,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 289 transitions, 1270 flow [2022-11-21 16:38:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:38:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:38:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2022-11-21 16:38:23,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783068783068783 [2022-11-21 16:38:23,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2022-11-21 16:38:23,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2022-11-21 16:38:23,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:23,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2022-11-21 16:38:23,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:23,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:23,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:23,490 INFO L175 Difference]: Start difference. First operand has 309 places, 282 transitions, 1173 flow. Second operand 3 states and 664 transitions. [2022-11-21 16:38:23,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 289 transitions, 1270 flow [2022-11-21 16:38:23,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 289 transitions, 1203 flow, removed 8 selfloop flow, removed 13 redundant places. [2022-11-21 16:38:23,517 INFO L231 Difference]: Finished difference. Result has 299 places, 282 transitions, 1117 flow [2022-11-21 16:38:23,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1117, PETRI_PLACES=299, PETRI_TRANSITIONS=282} [2022-11-21 16:38:23,518 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 78 predicate places. [2022-11-21 16:38:23,518 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 282 transitions, 1117 flow [2022-11-21 16:38:23,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:23,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:23,520 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:23,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:38:23,520 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:23,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:23,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1920625647, now seen corresponding path program 1 times [2022-11-21 16:38:23,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:23,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307519227] [2022-11-21 16:38:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:23,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:38:23,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:23,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307519227] [2022-11-21 16:38:23,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307519227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:38:23,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268834854] [2022-11-21 16:38:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:23,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:23,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:38:23,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:38:23,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:38:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:23,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:38:23,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:38:24,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:38:24,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268834854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:38:24,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:38:24,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:38:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605440240] [2022-11-21 16:38:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:38:24,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:38:24,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:38:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:38:24,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 252 [2022-11-21 16:38:24,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 282 transitions, 1117 flow. Second operand has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:24,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:24,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 252 [2022-11-21 16:38:24,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:25,454 INFO L130 PetriNetUnfolder]: 1366/9022 cut-off events. [2022-11-21 16:38:25,454 INFO L131 PetriNetUnfolder]: For 8319/8409 co-relation queries the response was YES. [2022-11-21 16:38:25,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18323 conditions, 9022 events. 1366/9022 cut-off events. For 8319/8409 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 96948 event pairs, 859 based on Foata normal form. 492/8036 useless extension candidates. Maximal degree in co-relation 18050. Up to 2300 conditions per place. [2022-11-21 16:38:25,538 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 24 selfloop transitions, 3 changer transitions 0/280 dead transitions. [2022-11-21 16:38:25,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 280 transitions, 1161 flow [2022-11-21 16:38:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:38:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:38:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 862 transitions. [2022-11-21 16:38:25,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-11-21 16:38:25,541 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 862 transitions. [2022-11-21 16:38:25,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 862 transitions. [2022-11-21 16:38:25,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:25,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 862 transitions. [2022-11-21 16:38:25,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:25,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:25,545 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:25,545 INFO L175 Difference]: Start difference. First operand has 299 places, 282 transitions, 1117 flow. Second operand 4 states and 862 transitions. [2022-11-21 16:38:25,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 280 transitions, 1161 flow [2022-11-21 16:38:25,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 280 transitions, 1152 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-21 16:38:25,572 INFO L231 Difference]: Finished difference. Result has 297 places, 280 transitions, 1104 flow [2022-11-21 16:38:25,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1104, PETRI_PLACES=297, PETRI_TRANSITIONS=280} [2022-11-21 16:38:25,573 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 76 predicate places. [2022-11-21 16:38:25,574 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 280 transitions, 1104 flow [2022-11-21 16:38:25,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:25,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:25,574 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:25,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-21 16:38:25,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:25,780 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:25,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash -590146177, now seen corresponding path program 1 times [2022-11-21 16:38:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:25,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073509861] [2022-11-21 16:38:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:38:26,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:26,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073509861] [2022-11-21 16:38:26,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073509861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:38:26,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:38:26,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:38:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799298853] [2022-11-21 16:38:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:38:26,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:38:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:38:26,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:38:26,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 252 [2022-11-21 16:38:26,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 280 transitions, 1104 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:26,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:26,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 252 [2022-11-21 16:38:26,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:27,375 INFO L130 PetriNetUnfolder]: 1073/7283 cut-off events. [2022-11-21 16:38:27,375 INFO L131 PetriNetUnfolder]: For 5954/6364 co-relation queries the response was YES. [2022-11-21 16:38:27,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14002 conditions, 7283 events. 1073/7283 cut-off events. For 5954/6364 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 74552 event pairs, 420 based on Foata normal form. 132/6246 useless extension candidates. Maximal degree in co-relation 13920. Up to 1816 conditions per place. [2022-11-21 16:38:27,418 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 16 selfloop transitions, 5 changer transitions 0/281 dead transitions. [2022-11-21 16:38:27,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 281 transitions, 1156 flow [2022-11-21 16:38:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:38:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:38:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-11-21 16:38:27,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2022-11-21 16:38:27,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-11-21 16:38:27,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-11-21 16:38:27,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:27,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-11-21 16:38:27,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:27,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:27,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:27,425 INFO L175 Difference]: Start difference. First operand has 297 places, 280 transitions, 1104 flow. Second operand 3 states and 658 transitions. [2022-11-21 16:38:27,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 281 transitions, 1156 flow [2022-11-21 16:38:27,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 281 transitions, 1139 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-21 16:38:27,443 INFO L231 Difference]: Finished difference. Result has 295 places, 279 transitions, 1111 flow [2022-11-21 16:38:27,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1111, PETRI_PLACES=295, PETRI_TRANSITIONS=279} [2022-11-21 16:38:27,445 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 74 predicate places. [2022-11-21 16:38:27,445 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 279 transitions, 1111 flow [2022-11-21 16:38:27,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:27,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:27,446 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:27,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:38:27,446 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash 343120182, now seen corresponding path program 1 times [2022-11-21 16:38:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:27,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300346370] [2022-11-21 16:38:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:27,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:38:27,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:27,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300346370] [2022-11-21 16:38:27,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300346370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:38:27,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448545742] [2022-11-21 16:38:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:27,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:27,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:38:27,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:38:27,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:38:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:27,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:38:27,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:38:27,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:38:27,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448545742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:38:27,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:38:27,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:38:27,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649878314] [2022-11-21 16:38:27,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:38:27,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:38:27,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:27,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:38:27,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:38:27,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 252 [2022-11-21 16:38:27,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 279 transitions, 1111 flow. Second operand has 6 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:27,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:27,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 252 [2022-11-21 16:38:27,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:29,963 INFO L130 PetriNetUnfolder]: 4301/10817 cut-off events. [2022-11-21 16:38:29,964 INFO L131 PetriNetUnfolder]: For 17051/17051 co-relation queries the response was YES. [2022-11-21 16:38:30,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31193 conditions, 10817 events. 4301/10817 cut-off events. For 17051/17051 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 99293 event pairs, 110 based on Foata normal form. 142/10016 useless extension candidates. Maximal degree in co-relation 30929. Up to 2787 conditions per place. [2022-11-21 16:38:30,060 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 54 selfloop transitions, 12 changer transitions 0/309 dead transitions. [2022-11-21 16:38:30,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 309 transitions, 1374 flow [2022-11-21 16:38:30,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:38:30,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:38:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1502 transitions. [2022-11-21 16:38:30,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8514739229024944 [2022-11-21 16:38:30,063 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1502 transitions. [2022-11-21 16:38:30,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1502 transitions. [2022-11-21 16:38:30,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:30,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1502 transitions. [2022-11-21 16:38:30,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 214.57142857142858) internal successors, (1502), 7 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:30,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:30,071 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:30,071 INFO L175 Difference]: Start difference. First operand has 295 places, 279 transitions, 1111 flow. Second operand 7 states and 1502 transitions. [2022-11-21 16:38:30,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 309 transitions, 1374 flow [2022-11-21 16:38:30,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 309 transitions, 1337 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-21 16:38:30,132 INFO L231 Difference]: Finished difference. Result has 298 places, 277 transitions, 1100 flow [2022-11-21 16:38:30,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1100, PETRI_PLACES=298, PETRI_TRANSITIONS=277} [2022-11-21 16:38:30,133 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 77 predicate places. [2022-11-21 16:38:30,133 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 277 transitions, 1100 flow [2022-11-21 16:38:30,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:30,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:30,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:30,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 16:38:30,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:30,340 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:30,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:30,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1545751041, now seen corresponding path program 1 times [2022-11-21 16:38:30,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:30,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106922845] [2022-11-21 16:38:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:30,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:38:32,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:32,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106922845] [2022-11-21 16:38:32,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106922845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:38:32,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044357856] [2022-11-21 16:38:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:32,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:32,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:38:32,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:38:32,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:38:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:32,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-21 16:38:32,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:32,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 16:38:33,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:38:33,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-21 16:38:33,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:38:33,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-21 16:38:34,071 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-21 16:38:34,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-21 16:38:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:38:34,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:38:34,391 WARN L837 $PredicateComparison]: unable to prove that (forall ((~q2_back~0 Int) (v_ArrVal_316 (Array Int Int))) (or (not (< ~q2_back~0 c_~n2~0)) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_316) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4))) 2147483648) (not (<= 0 ~q2_back~0)))) is different from false [2022-11-21 16:38:35,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:38:35,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-21 16:38:35,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:38:35,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 146 [2022-11-21 16:38:35,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2022-11-21 16:38:35,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-11-21 16:38:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:38:36,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044357856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:38:36,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:38:36,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 55 [2022-11-21 16:38:36,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957761744] [2022-11-21 16:38:36,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:38:36,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-21 16:38:36,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:38:36,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-21 16:38:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2727, Unknown=40, NotChecked=106, Total=3080 [2022-11-21 16:38:36,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 252 [2022-11-21 16:38:36,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 277 transitions, 1100 flow. Second operand has 56 states, 56 states have (on average 137.82142857142858) internal successors, (7718), 56 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:36,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:38:36,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 252 [2022-11-21 16:38:36,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:38:54,202 INFO L130 PetriNetUnfolder]: 9277/31293 cut-off events. [2022-11-21 16:38:54,202 INFO L131 PetriNetUnfolder]: For 20606/22820 co-relation queries the response was YES. [2022-11-21 16:38:54,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63518 conditions, 31293 events. 9277/31293 cut-off events. For 20606/22820 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 377030 event pairs, 4522 based on Foata normal form. 666/26509 useless extension candidates. Maximal degree in co-relation 63171. Up to 9827 conditions per place. [2022-11-21 16:38:54,480 INFO L137 encePairwiseOnDemand]: 215/252 looper letters, 199 selfloop transitions, 76 changer transitions 18/415 dead transitions. [2022-11-21 16:38:54,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 415 transitions, 2301 flow [2022-11-21 16:38:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-21 16:38:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-21 16:38:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6011 transitions. [2022-11-21 16:38:54,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5547249907715024 [2022-11-21 16:38:54,491 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6011 transitions. [2022-11-21 16:38:54,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6011 transitions. [2022-11-21 16:38:54,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:38:54,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6011 transitions. [2022-11-21 16:38:54,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 139.7906976744186) internal successors, (6011), 43 states have internal predecessors, (6011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:54,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:54,527 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:54,527 INFO L175 Difference]: Start difference. First operand has 298 places, 277 transitions, 1100 flow. Second operand 43 states and 6011 transitions. [2022-11-21 16:38:54,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 415 transitions, 2301 flow [2022-11-21 16:38:54,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 415 transitions, 2275 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-21 16:38:54,639 INFO L231 Difference]: Finished difference. Result has 348 places, 313 transitions, 1432 flow [2022-11-21 16:38:54,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1432, PETRI_PLACES=348, PETRI_TRANSITIONS=313} [2022-11-21 16:38:54,641 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 127 predicate places. [2022-11-21 16:38:54,642 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 313 transitions, 1432 flow [2022-11-21 16:38:54,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 137.82142857142858) internal successors, (7718), 56 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:38:54,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:38:54,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:38:54,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-21 16:38:54,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:54,851 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:38:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:38:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1957814318, now seen corresponding path program 1 times [2022-11-21 16:38:54,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:38:54,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872971542] [2022-11-21 16:38:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:54,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:38:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:38:56,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:38:56,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872971542] [2022-11-21 16:38:56,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872971542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:38:56,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682266670] [2022-11-21 16:38:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:38:56,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:38:56,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:38:56,121 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:38:56,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:38:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:38:56,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-21 16:38:56,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:38:56,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 16:38:57,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:38:57,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-21 16:38:57,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:38:57,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-21 16:38:58,112 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-21 16:38:58,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-21 16:38:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:38:58,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:38:58,421 WARN L837 $PredicateComparison]: unable to prove that (forall ((~q2_back~0 Int) (v_ArrVal_356 (Array Int Int))) (or (not (< ~q2_back~0 c_~n2~0)) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_356) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4))) 2147483649)) (not (<= 0 ~q2_back~0)))) is different from false [2022-11-21 16:38:59,447 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:38:59,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-21 16:38:59,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:38:59,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 84 [2022-11-21 16:38:59,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2022-11-21 16:38:59,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2022-11-21 16:39:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:01,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682266670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:01,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:39:01,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 54 [2022-11-21 16:39:01,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204652857] [2022-11-21 16:39:01,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:01,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-21 16:39:01,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:39:01,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-21 16:39:01,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2647, Unknown=40, NotChecked=104, Total=2970 [2022-11-21 16:39:01,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 252 [2022-11-21 16:39:01,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 313 transitions, 1432 flow. Second operand has 55 states, 55 states have (on average 131.8) internal successors, (7249), 55 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:01,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:39:01,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 252 [2022-11-21 16:39:01,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:39:28,921 INFO L130 PetriNetUnfolder]: 9459/24034 cut-off events. [2022-11-21 16:39:28,921 INFO L131 PetriNetUnfolder]: For 25144/26335 co-relation queries the response was YES. [2022-11-21 16:39:29,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60756 conditions, 24034 events. 9459/24034 cut-off events. For 25144/26335 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 254176 event pairs, 4285 based on Foata normal form. 1069/22220 useless extension candidates. Maximal degree in co-relation 60365. Up to 10608 conditions per place. [2022-11-21 16:39:29,272 INFO L137 encePairwiseOnDemand]: 198/252 looper letters, 263 selfloop transitions, 179 changer transitions 51/608 dead transitions. [2022-11-21 16:39:29,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 608 transitions, 3879 flow [2022-11-21 16:39:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-11-21 16:39:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2022-11-21 16:39:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 14752 transitions. [2022-11-21 16:39:29,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5226757369614512 [2022-11-21 16:39:29,303 INFO L72 ComplementDD]: Start complementDD. Operand 112 states and 14752 transitions. [2022-11-21 16:39:29,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 14752 transitions. [2022-11-21 16:39:29,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:39:29,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 112 states and 14752 transitions. [2022-11-21 16:39:29,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 113 states, 112 states have (on average 131.71428571428572) internal successors, (14752), 112 states have internal predecessors, (14752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:29,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 113 states, 113 states have (on average 252.0) internal successors, (28476), 113 states have internal predecessors, (28476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:29,382 INFO L81 ComplementDD]: Finished complementDD. Result has 113 states, 113 states have (on average 252.0) internal successors, (28476), 113 states have internal predecessors, (28476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:29,382 INFO L175 Difference]: Start difference. First operand has 348 places, 313 transitions, 1432 flow. Second operand 112 states and 14752 transitions. [2022-11-21 16:39:29,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 608 transitions, 3879 flow [2022-11-21 16:39:29,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 608 transitions, 3805 flow, removed 3 selfloop flow, removed 15 redundant places. [2022-11-21 16:39:29,498 INFO L231 Difference]: Finished difference. Result has 460 places, 398 transitions, 2357 flow [2022-11-21 16:39:29,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=112, PETRI_FLOW=2357, PETRI_PLACES=460, PETRI_TRANSITIONS=398} [2022-11-21 16:39:29,500 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 239 predicate places. [2022-11-21 16:39:29,500 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 398 transitions, 2357 flow [2022-11-21 16:39:29,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 131.8) internal successors, (7249), 55 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:29,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:39:29,502 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:29,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:39:29,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:39:29,708 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:39:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1045298055, now seen corresponding path program 1 times [2022-11-21 16:39:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:39:29,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988316493] [2022-11-21 16:39:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:39:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:30,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:39:30,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988316493] [2022-11-21 16:39:30,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988316493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:39:30,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760530543] [2022-11-21 16:39:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:30,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:39:30,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:39:30,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:39:30,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:39:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:30,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 16:39:30,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:31,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 16:39:32,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:32,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:39:32,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:32,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:39:32,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:32,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:39:33,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:39:33,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:39:33,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-11-21 16:39:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:33,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:34,767 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:39:34,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-11-21 16:39:34,795 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:39:34,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 310 treesize of output 298 [2022-11-21 16:39:34,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 234 [2022-11-21 16:39:34,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 110 [2022-11-21 16:39:34,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 198 [2022-11-21 16:39:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:36,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760530543] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:36,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:39:36,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-11-21 16:39:36,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345942051] [2022-11-21 16:39:36,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:36,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-21 16:39:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:39:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-21 16:39:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=3142, Unknown=75, NotChecked=0, Total=3422 [2022-11-21 16:39:36,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 252 [2022-11-21 16:39:36,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 398 transitions, 2357 flow. Second operand has 59 states, 59 states have (on average 129.54237288135593) internal successors, (7643), 59 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:36,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:39:36,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 252 [2022-11-21 16:39:36,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:39:36,635 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (< c_~n2~0 2)) (.cse0 (< c_~n2~0 1))) (let ((.cse1 (or (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) .cse0)) (.cse2 (or (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) .cse0)) (.cse3 (or .cse0 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)))) (.cse4 (and (or (not (< |c_ULTIMATE.start_main_~#t1~0#1.base| |c_#StackHeapBarrier|)) .cse0) .cse6 (or (not (< |c_ULTIMATE.start_main_~#t3~0#1.base| |c_#StackHeapBarrier|)) .cse0) (or (not (< |c_ULTIMATE.start_main_~#t2~0#1.base| |c_#StackHeapBarrier|)) .cse0))) (.cse5 (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|))) (and (forall ((~q2_back~0 Int) (v_ArrVal_401 (Array Int Int)) (v_ArrVal_400 (Array Int Int))) (or (not (< ~q2_back~0 c_~n2~0)) (not (<= 0 ~q2_back~0)) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_400) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_401) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4))) 2147483648))) (or (and (or (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) .cse0) .cse1 (or .cse0 (< |c_ULTIMATE.start_create_fresh_int_array_#t~nondet31#1| 2147483648)) .cse2 .cse3 (or .cse0 (< c_~n2~0 (+ 2 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|)))) (< (+ 1 |c_ULTIMATE.start_create_fresh_int_array_~i~1#1|) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (forall ((~q2_back~0 Int) (v_ArrVal_399 (Array Int Int)) (v_ArrVal_401 (Array Int Int)) (v_ArrVal_400 (Array Int Int))) (or (not (< ~q2_back~0 c_~n2~0)) (not (<= 0 ~q2_back~0)) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_399) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_400) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_401) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4))) 2147483648))) (forall ((~q2_back~0 Int) (v_ArrVal_399 (Array Int Int)) (v_ArrVal_401 (Array Int Int)) (v_ArrVal_400 (Array Int Int))) (or (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_399) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_400) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_401) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~q2_back~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483648) (not (< ~q2_back~0 c_~n2~0)) (not (<= 0 ~q2_back~0)))) (or .cse4 (< 1 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|)) (or .cse5 (and .cse1 .cse6 .cse2 .cse3)) (forall ((~q2_back~0 Int) (v_ArrVal_399 (Array Int Int)) (v_ArrVal_401 (Array Int Int)) (v_ArrVal_400 (Array Int Int))) (or (not (< ~q2_back~0 c_~n2~0)) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_399) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_400) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_401) |c_ULTIMATE.start_main_#t~ret19#1.base|) (+ (* ~q2_back~0 4) |c_ULTIMATE.start_main_#t~ret19#1.offset|)) 2147483648) (not (<= 0 ~q2_back~0)))) (or .cse5 .cse4) (forall ((~q2_back~0 Int) (v_ArrVal_401 (Array Int Int))) (or (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_401) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4)))) 2147483647) (not (< ~q2_back~0 c_~n2~0)) (not (<= 0 ~q2_back~0)))) (or (and (or (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.base| |c_ULTIMATE.start_main_~#t1~0#1.base|)) .cse0) (or (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.base| |c_ULTIMATE.start_main_~#t3~0#1.base|)) .cse0) (or (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) .cse0) .cse6) .cse5) (forall ((~q2_back~0 Int) (v_ArrVal_399 (Array Int Int)) (v_ArrVal_401 (Array Int Int)) (v_ArrVal_400 (Array Int Int))) (or (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_399) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_400) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_401) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* ~q2_back~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 2147483648) (not (< ~q2_back~0 c_~n2~0)) (not (<= 0 ~q2_back~0))))))) is different from false [2022-11-21 16:39:58,710 INFO L130 PetriNetUnfolder]: 9294/25269 cut-off events. [2022-11-21 16:39:58,710 INFO L131 PetriNetUnfolder]: For 96224/98231 co-relation queries the response was YES. [2022-11-21 16:39:58,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77530 conditions, 25269 events. 9294/25269 cut-off events. For 96224/98231 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 285912 event pairs, 4596 based on Foata normal form. 1662/24534 useless extension candidates. Maximal degree in co-relation 77093. Up to 7660 conditions per place. [2022-11-21 16:39:59,227 INFO L137 encePairwiseOnDemand]: 198/252 looper letters, 329 selfloop transitions, 180 changer transitions 12/636 dead transitions. [2022-11-21 16:39:59,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 636 transitions, 4862 flow [2022-11-21 16:39:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-11-21 16:39:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2022-11-21 16:39:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 12615 transitions. [2022-11-21 16:39:59,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5160775650466373 [2022-11-21 16:39:59,250 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 12615 transitions. [2022-11-21 16:39:59,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 12615 transitions. [2022-11-21 16:39:59,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:39:59,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 12615 transitions. [2022-11-21 16:39:59,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 130.05154639175257) internal successors, (12615), 97 states have internal predecessors, (12615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:59,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 252.0) internal successors, (24696), 98 states have internal predecessors, (24696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:59,311 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 252.0) internal successors, (24696), 98 states have internal predecessors, (24696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:59,312 INFO L175 Difference]: Start difference. First operand has 460 places, 398 transitions, 2357 flow. Second operand 97 states and 12615 transitions. [2022-11-21 16:39:59,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 636 transitions, 4862 flow [2022-11-21 16:39:59,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 636 transitions, 4407 flow, removed 122 selfloop flow, removed 50 redundant places. [2022-11-21 16:39:59,811 INFO L231 Difference]: Finished difference. Result has 501 places, 435 transitions, 2845 flow [2022-11-21 16:39:59,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=2845, PETRI_PLACES=501, PETRI_TRANSITIONS=435} [2022-11-21 16:39:59,812 INFO L288 CegarLoopForPetriNet]: 221 programPoint places, 280 predicate places. [2022-11-21 16:39:59,812 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 435 transitions, 2845 flow [2022-11-21 16:39:59,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 129.54237288135593) internal successors, (7643), 59 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:59,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:39:59,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:59,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:40:00,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 16:40:00,015 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-21 16:40:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash 982108410, now seen corresponding path program 1 times [2022-11-21 16:40:00,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:40:00,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126117480] [2022-11-21 16:40:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:00,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:40:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:40:01,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:40:01,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126117480] [2022-11-21 16:40:01,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126117480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:40:01,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21010390] [2022-11-21 16:40:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:01,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:40:01,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:40:01,201 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:40:01,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d522e5cc-8728-4f1d-94ea-41d999ba2626/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:40:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:01,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-21 16:40:01,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:01,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 16:40:02,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 16:40:03,533 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:40:03,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:40:03,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-21 16:40:04,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:04,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-21 16:40:04,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:04,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-21 16:40:04,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:04,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-21 16:40:05,052 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-21 16:40:05,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-21 16:40:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:05,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:07,296 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:40:07,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2022-11-21 16:40:07,310 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:40:07,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1354 treesize of output 1326 [2022-11-21 16:40:07,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1310 treesize of output 1262 [2022-11-21 16:40:07,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1262 treesize of output 1070 [2022-11-21 16:40:07,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 546 treesize of output 522 [2022-11-21 16:40:07,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1046 treesize of output 950 [2022-11-21 16:40:09,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:40:09,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 120 [2022-11-21 16:40:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:11,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21010390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:11,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:40:11,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 27, 27] total 68 [2022-11-21 16:40:11,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588571298] [2022-11-21 16:40:11,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:11,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-21 16:40:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:40:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-21 16:40:11,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=4382, Unknown=18, NotChecked=0, Total=4692 [2022-11-21 16:40:11,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 252 [2022-11-21 16:40:11,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 435 transitions, 2845 flow. Second operand has 69 states, 69 states have (on average 130.95652173913044) internal successors, (9036), 69 states have internal predecessors, (9036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:11,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:40:11,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 252 [2022-11-21 16:40:11,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:40:51,861 WARN L233 SmtUtils]: Spent 40.45s on a formula simplification. DAG size of input: 197 DAG size of output: 182 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:40:53,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:41:06,889 WARN L233 SmtUtils]: Spent 10.86s on a formula simplification. DAG size of input: 192 DAG size of output: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:41:15,749 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 193 DAG size of output: 147 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:41:26,549 WARN L233 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 194 DAG size of output: 148 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:41:34,634 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 162 DAG size of output: 121 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:41:55,436 WARN L233 SmtUtils]: Spent 11.60s on a formula simplification. DAG size of input: 138 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:43:11,167 WARN L233 SmtUtils]: Spent 36.36s on a formula simplification. DAG size of input: 225 DAG size of output: 166 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:43:14,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:43:17,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:43:43,461 WARN L233 SmtUtils]: Spent 21.16s on a formula simplification. DAG size of input: 230 DAG size of output: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:44:24,199 WARN L233 SmtUtils]: Spent 37.07s on a formula simplification. DAG size of input: 240 DAG size of output: 167 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:45:00,255 WARN L233 SmtUtils]: Spent 26.42s on a formula simplification. DAG size of input: 226 DAG size of output: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:47:36,686 WARN L233 SmtUtils]: Spent 2.28m on a formula simplification. DAG size of input: 231 DAG size of output: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:47:54,125 WARN L233 SmtUtils]: Spent 13.32s on a formula simplification. DAG size of input: 196 DAG size of output: 122 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:48:33,648 WARN L233 SmtUtils]: Spent 36.14s on a formula simplification. DAG size of input: 228 DAG size of output: 162 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:48:53,956 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 189 DAG size of output: 124 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:49:21,706 WARN L233 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 190 DAG size of output: 121 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:50:05,026 WARN L233 SmtUtils]: Spent 40.85s on a formula simplification. DAG size of input: 217 DAG size of output: 158 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:50:21,157 WARN L233 SmtUtils]: Spent 9.13s on a formula simplification. DAG size of input: 168 DAG size of output: 118 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:50:35,665 WARN L233 SmtUtils]: Spent 9.11s on a formula simplification. DAG size of input: 198 DAG size of output: 124 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:50:41,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:50:43,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:50:53,989 WARN L233 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 195 DAG size of output: 116 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:51:21,706 WARN L233 SmtUtils]: Spent 24.51s on a formula simplification. DAG size of input: 192 DAG size of output: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:51:47,340 WARN L233 SmtUtils]: Spent 17.77s on a formula simplification. DAG size of input: 184 DAG size of output: 119 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:51:59,806 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 196 DAG size of output: 124 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:52:16,970 WARN L233 SmtUtils]: Spent 12.92s on a formula simplification. DAG size of input: 193 DAG size of output: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:52:21,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:52:33,016 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 175 DAG size of output: 117 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)