./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:32:54,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:32:54,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:32:54,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:32:54,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:32:54,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:32:54,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:32:54,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:32:54,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:32:54,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:32:54,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:32:54,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:32:54,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:32:54,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:32:54,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:32:54,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:32:54,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:32:54,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:32:54,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:32:54,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:32:54,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:32:54,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:32:54,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:32:54,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:32:54,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:32:54,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:32:54,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:32:54,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:32:54,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:32:54,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:32:54,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:32:54,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:32:54,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:32:54,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:32:54,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:32:54,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:32:54,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:32:54,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:32:54,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:32:54,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:32:54,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:32:54,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:32:54,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:32:54,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:32:54,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:32:54,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:32:54,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:32:54,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:32:54,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:32:54,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:32:54,765 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:32:54,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:32:54,766 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:32:54,766 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:32:54,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:32:54,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:32:54,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:32:54,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:32:54,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:32:54,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:32:54,767 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:32:54,768 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:32:54,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:32:54,768 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:32:54,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:32:54,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:32:54,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:32:54,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:32:54,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:54,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:32:54,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:32:54,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:32:54,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:32:54,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:32:54,770 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:32:54,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:32:54,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:32:54,771 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_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-11-18 19:32:55,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:32:55,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:32:55,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:32:55,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:32:55,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:32:55,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-18 19:32:55,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/data/2f1f5b347/07b6b15040514940b5a83f9d6b49f258/FLAG1907d4801 [2022-11-18 19:32:55,748 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:32:55,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-18 19:32:55,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/data/2f1f5b347/07b6b15040514940b5a83f9d6b49f258/FLAG1907d4801 [2022-11-18 19:32:56,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/data/2f1f5b347/07b6b15040514940b5a83f9d6b49f258 [2022-11-18 19:32:56,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:32:56,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:32:56,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:56,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:32:56,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:32:56,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b4a3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56, skipping insertion in model container [2022-11-18 19:32:56,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:32:56,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:32:56,455 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-18 19:32:56,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:56,510 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:32:56,558 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-18 19:32:56,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:56,598 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:32:56,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56 WrapperNode [2022-11-18 19:32:56,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:56,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:56,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:32:56,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:32:56,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,684 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 328 [2022-11-18 19:32:56,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:56,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:32:56,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:32:56,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:32:56,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,750 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:32:56,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:32:56,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:32:56,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:32:56,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (1/1) ... [2022-11-18 19:32:56,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:56,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:56,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:56,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:32:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:32:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:32:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:32:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:32:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:32:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:32:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:32:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:32:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:32:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:32:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:32:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:32:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:32:56,876 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:32:57,084 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:32:57,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:32:57,789 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:32:57,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:32:57,820 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:32:57,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:57 BoogieIcfgContainer [2022-11-18 19:32:57,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:32:57,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:32:57,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:32:57,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:32:57,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:32:56" (1/3) ... [2022-11-18 19:32:57,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4685e6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:57, skipping insertion in model container [2022-11-18 19:32:57,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:56" (2/3) ... [2022-11-18 19:32:57,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4685e6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:57, skipping insertion in model container [2022-11-18 19:32:57,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:57" (3/3) ... [2022-11-18 19:32:57,847 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-11-18 19:32:57,856 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:32:57,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:32:57,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-18 19:32:57,883 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:32:58,042 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:32:58,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 453 transitions, 922 flow [2022-11-18 19:32:58,326 INFO L130 PetriNetUnfolder]: 32/451 cut-off events. [2022-11-18 19:32:58,326 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:32:58,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 451 events. 32/451 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 602 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 347. Up to 2 conditions per place. [2022-11-18 19:32:58,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 453 transitions, 922 flow [2022-11-18 19:32:58,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 433 transitions, 878 flow [2022-11-18 19:32:58,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:32:58,395 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;@7c96fc63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:32:58,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-18 19:32:58,411 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-18 19:32:58,411 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:32:58,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:58,412 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] [2022-11-18 19:32:58,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:32:58,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1563945764, now seen corresponding path program 1 times [2022-11-18 19:32:58,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:58,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691949752] [2022-11-18 19:32:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:58,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:58,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:58,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691949752] [2022-11-18 19:32:58,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691949752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:58,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:58,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:32:58,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45421259] [2022-11-18 19:32:58,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:58,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:32:58,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:32:59,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:32:59,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 453 [2022-11-18 19:32:59,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 433 transitions, 878 flow. Second operand has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:59,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 453 [2022-11-18 19:32:59,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:59,353 INFO L130 PetriNetUnfolder]: 43/730 cut-off events. [2022-11-18 19:32:59,354 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-18 19:32:59,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 730 events. 43/730 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2767 event pairs, 15 based on Foata normal form. 31/655 useless extension candidates. Maximal degree in co-relation 504. Up to 90 conditions per place. [2022-11-18 19:32:59,366 INFO L137 encePairwiseOnDemand]: 423/453 looper letters, 58 selfloop transitions, 5 changer transitions 14/410 dead transitions. [2022-11-18 19:32:59,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 410 transitions, 982 flow [2022-11-18 19:32:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:32:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:32:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2186 transitions. [2022-11-18 19:32:59,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8042678440029434 [2022-11-18 19:32:59,400 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2186 transitions. [2022-11-18 19:32:59,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2186 transitions. [2022-11-18 19:32:59,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:59,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2186 transitions. [2022-11-18 19:32:59,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 364.3333333333333) internal successors, (2186), 6 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,436 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,467 INFO L175 Difference]: Start difference. First operand has 409 places, 433 transitions, 878 flow. Second operand 6 states and 2186 transitions. [2022-11-18 19:32:59,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 410 transitions, 982 flow [2022-11-18 19:32:59,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 410 transitions, 974 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:32:59,489 INFO L231 Difference]: Finished difference. Result has 406 places, 396 transitions, 805 flow [2022-11-18 19:32:59,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=805, PETRI_PLACES=406, PETRI_TRANSITIONS=396} [2022-11-18 19:32:59,496 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -3 predicate places. [2022-11-18 19:32:59,497 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 396 transitions, 805 flow [2022-11-18 19:32:59,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:59,499 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:59,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:32:59,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:32:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:59,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1237679271, now seen corresponding path program 1 times [2022-11-18 19:32:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:59,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871791796] [2022-11-18 19:32:59,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:59,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:59,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:59,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871791796] [2022-11-18 19:32:59,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871791796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:59,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:59,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:59,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560394020] [2022-11-18 19:32:59,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:59,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:32:59,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:32:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:32:59,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 453 [2022-11-18 19:32:59,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 396 transitions, 805 flow. Second operand has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:59,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 453 [2022-11-18 19:32:59,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:59,896 INFO L130 PetriNetUnfolder]: 43/714 cut-off events. [2022-11-18 19:32:59,896 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 19:32:59,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 714 events. 43/714 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2665 event pairs, 15 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 697. Up to 50 conditions per place. [2022-11-18 19:32:59,902 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 19 selfloop transitions, 3 changer transitions 0/394 dead transitions. [2022-11-18 19:32:59,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 394 transitions, 845 flow [2022-11-18 19:32:59,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:32:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:32:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1636 transitions. [2022-11-18 19:32:59,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9028697571743929 [2022-11-18 19:32:59,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1636 transitions. [2022-11-18 19:32:59,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1636 transitions. [2022-11-18 19:32:59,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:59,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1636 transitions. [2022-11-18 19:32:59,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,917 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,917 INFO L175 Difference]: Start difference. First operand has 406 places, 396 transitions, 805 flow. Second operand 4 states and 1636 transitions. [2022-11-18 19:32:59,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 394 transitions, 845 flow [2022-11-18 19:32:59,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 394 transitions, 835 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:32:59,925 INFO L231 Difference]: Finished difference. Result has 388 places, 394 transitions, 797 flow [2022-11-18 19:32:59,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=797, PETRI_PLACES=388, PETRI_TRANSITIONS=394} [2022-11-18 19:32:59,927 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -21 predicate places. [2022-11-18 19:32:59,927 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 394 transitions, 797 flow [2022-11-18 19:32:59,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:59,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:59,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:59,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:32:59,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:32:59,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash 231550616, now seen corresponding path program 1 times [2022-11-18 19:32:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:59,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393832556] [2022-11-18 19:32:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:59,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:00,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:00,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393832556] [2022-11-18 19:33:00,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393832556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:00,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:00,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:00,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778725335] [2022-11-18 19:33:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:00,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:00,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:00,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:00,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:00,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-18 19:33:00,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 394 transitions, 797 flow. Second operand has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:00,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:00,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-18 19:33:00,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:00,404 INFO L130 PetriNetUnfolder]: 23/676 cut-off events. [2022-11-18 19:33:00,404 INFO L131 PetriNetUnfolder]: For 2/4 co-relation queries the response was YES. [2022-11-18 19:33:00,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 676 events. 23/676 cut-off events. For 2/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1857 event pairs, 0 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 698. Up to 29 conditions per place. [2022-11-18 19:33:00,411 INFO L137 encePairwiseOnDemand]: 440/453 looper letters, 38 selfloop transitions, 9 changer transitions 0/414 dead transitions. [2022-11-18 19:33:00,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 414 transitions, 934 flow [2022-11-18 19:33:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2061 transitions. [2022-11-18 19:33:00,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909933774834437 [2022-11-18 19:33:00,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2061 transitions. [2022-11-18 19:33:00,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2061 transitions. [2022-11-18 19:33:00,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:00,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2061 transitions. [2022-11-18 19:33:00,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 412.2) internal successors, (2061), 5 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:00,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:00,433 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:00,434 INFO L175 Difference]: Start difference. First operand has 388 places, 394 transitions, 797 flow. Second operand 5 states and 2061 transitions. [2022-11-18 19:33:00,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 414 transitions, 934 flow [2022-11-18 19:33:00,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 414 transitions, 928 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:33:00,444 INFO L231 Difference]: Finished difference. Result has 392 places, 401 transitions, 858 flow [2022-11-18 19:33:00,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=858, PETRI_PLACES=392, PETRI_TRANSITIONS=401} [2022-11-18 19:33:00,447 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -17 predicate places. [2022-11-18 19:33:00,448 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 401 transitions, 858 flow [2022-11-18 19:33:00,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:00,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:00,450 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:00,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:33:00,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:00,452 INFO L85 PathProgramCache]: Analyzing trace with hash 849207529, now seen corresponding path program 1 times [2022-11-18 19:33:00,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:00,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098384161] [2022-11-18 19:33:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:00,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:00,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098384161] [2022-11-18 19:33:00,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098384161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:00,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:00,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:00,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376024205] [2022-11-18 19:33:00,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:00,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:00,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:00,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:00,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:00,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 453 [2022-11-18 19:33:00,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 401 transitions, 858 flow. Second operand has 6 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:00,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:00,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 453 [2022-11-18 19:33:00,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:01,430 INFO L130 PetriNetUnfolder]: 211/2512 cut-off events. [2022-11-18 19:33:01,431 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-18 19:33:01,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2884 conditions, 2512 events. 211/2512 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 19394 event pairs, 96 based on Foata normal form. 0/2122 useless extension candidates. Maximal degree in co-relation 1499. Up to 308 conditions per place. [2022-11-18 19:33:01,454 INFO L137 encePairwiseOnDemand]: 446/453 looper letters, 72 selfloop transitions, 5 changer transitions 0/399 dead transitions. [2022-11-18 19:33:01,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 399 transitions, 1008 flow [2022-11-18 19:33:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:33:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2059 transitions. [2022-11-18 19:33:01,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7575423105224429 [2022-11-18 19:33:01,461 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2059 transitions. [2022-11-18 19:33:01,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2059 transitions. [2022-11-18 19:33:01,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:01,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2059 transitions. [2022-11-18 19:33:01,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 343.1666666666667) internal successors, (2059), 6 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:01,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:01,483 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:01,484 INFO L175 Difference]: Start difference. First operand has 392 places, 401 transitions, 858 flow. Second operand 6 states and 2059 transitions. [2022-11-18 19:33:01,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 399 transitions, 1008 flow [2022-11-18 19:33:01,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 399 transitions, 1003 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:01,495 INFO L231 Difference]: Finished difference. Result has 394 places, 399 transitions, 859 flow [2022-11-18 19:33:01,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=859, PETRI_PLACES=394, PETRI_TRANSITIONS=399} [2022-11-18 19:33:01,498 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -15 predicate places. [2022-11-18 19:33:01,504 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 399 transitions, 859 flow [2022-11-18 19:33:01,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:01,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:01,506 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] [2022-11-18 19:33:01,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:33:01,506 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:01,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:01,507 INFO L85 PathProgramCache]: Analyzing trace with hash 555630252, now seen corresponding path program 1 times [2022-11-18 19:33:01,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:01,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766137453] [2022-11-18 19:33:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:01,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:01,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766137453] [2022-11-18 19:33:01,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766137453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:01,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:01,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272603178] [2022-11-18 19:33:01,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:01,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:01,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:01,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:01,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:01,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 453 [2022-11-18 19:33:01,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 399 transitions, 859 flow. Second operand has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:01,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:01,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 453 [2022-11-18 19:33:01,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:01,987 INFO L130 PetriNetUnfolder]: 93/1432 cut-off events. [2022-11-18 19:33:01,987 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-18 19:33:01,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1574 conditions, 1432 events. 93/1432 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8141 event pairs, 30 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 1489. Up to 95 conditions per place. [2022-11-18 19:33:02,000 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 19 selfloop transitions, 3 changer transitions 0/397 dead transitions. [2022-11-18 19:33:02,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 397 transitions, 899 flow [2022-11-18 19:33:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:33:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:33:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1636 transitions. [2022-11-18 19:33:02,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9028697571743929 [2022-11-18 19:33:02,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1636 transitions. [2022-11-18 19:33:02,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1636 transitions. [2022-11-18 19:33:02,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:02,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1636 transitions. [2022-11-18 19:33:02,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:02,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:02,018 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:02,018 INFO L175 Difference]: Start difference. First operand has 394 places, 399 transitions, 859 flow. Second operand 4 states and 1636 transitions. [2022-11-18 19:33:02,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 397 transitions, 899 flow [2022-11-18 19:33:02,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 397 transitions, 890 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:33:02,027 INFO L231 Difference]: Finished difference. Result has 391 places, 397 transitions, 852 flow [2022-11-18 19:33:02,028 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=852, PETRI_PLACES=391, PETRI_TRANSITIONS=397} [2022-11-18 19:33:02,031 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -18 predicate places. [2022-11-18 19:33:02,031 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 397 transitions, 852 flow [2022-11-18 19:33:02,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:02,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:02,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:02,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:33:02,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:02,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash -640647585, now seen corresponding path program 1 times [2022-11-18 19:33:02,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:02,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613582780] [2022-11-18 19:33:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:02,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:02,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:02,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613582780] [2022-11-18 19:33:02,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613582780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:02,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089582363] [2022-11-18 19:33:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:02,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:02,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:02,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:02,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:33:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:33:02,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:02,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:02,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089582363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:02,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:02,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:33:02,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113565142] [2022-11-18 19:33:02,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:02,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:33:02,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:33:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:33:02,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-18 19:33:02,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 397 transitions, 852 flow. Second operand has 12 states, 12 states have (on average 404.6666666666667) internal successors, (4856), 12 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:02,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:02,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-18 19:33:02,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:03,293 INFO L130 PetriNetUnfolder]: 56/1506 cut-off events. [2022-11-18 19:33:03,293 INFO L131 PetriNetUnfolder]: For 28/33 co-relation queries the response was YES. [2022-11-18 19:33:03,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 1506 events. 56/1506 cut-off events. For 28/33 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7504 event pairs, 0 based on Foata normal form. 6/1352 useless extension candidates. Maximal degree in co-relation 1639. Up to 22 conditions per place. [2022-11-18 19:33:03,306 INFO L137 encePairwiseOnDemand]: 438/453 looper letters, 71 selfloop transitions, 40 changer transitions 0/474 dead transitions. [2022-11-18 19:33:03,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 474 transitions, 1290 flow [2022-11-18 19:33:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:33:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:33:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7353 transitions. [2022-11-18 19:33:03,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9017660044150111 [2022-11-18 19:33:03,323 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7353 transitions. [2022-11-18 19:33:03,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7353 transitions. [2022-11-18 19:33:03,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:03,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7353 transitions. [2022-11-18 19:33:03,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 408.5) internal successors, (7353), 18 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:03,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:03,377 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:03,378 INFO L175 Difference]: Start difference. First operand has 391 places, 397 transitions, 852 flow. Second operand 18 states and 7353 transitions. [2022-11-18 19:33:03,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 474 transitions, 1290 flow [2022-11-18 19:33:03,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 474 transitions, 1284 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:33:03,388 INFO L231 Difference]: Finished difference. Result has 409 places, 424 transitions, 1084 flow [2022-11-18 19:33:03,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1084, PETRI_PLACES=409, PETRI_TRANSITIONS=424} [2022-11-18 19:33:03,390 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 0 predicate places. [2022-11-18 19:33:03,390 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 424 transitions, 1084 flow [2022-11-18 19:33:03,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 404.6666666666667) internal successors, (4856), 12 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:03,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:03,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:03,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:03,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:03,601 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:03,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:03,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1614762047, now seen corresponding path program 1 times [2022-11-18 19:33:03,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:03,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045820564] [2022-11-18 19:33:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:03,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045820564] [2022-11-18 19:33:03,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045820564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:03,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207817515] [2022-11-18 19:33:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:03,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:03,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:03,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:33:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:03,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:33:03,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:03,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:03,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207817515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:03,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:03,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:33:03,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643446133] [2022-11-18 19:33:03,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:03,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:03,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:03,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:03,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:03,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-18 19:33:03,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 424 transitions, 1084 flow. Second operand has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:03,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:03,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-18 19:33:03,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:04,393 INFO L130 PetriNetUnfolder]: 56/1498 cut-off events. [2022-11-18 19:33:04,393 INFO L131 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2022-11-18 19:33:04,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 1498 events. 56/1498 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7466 event pairs, 0 based on Foata normal form. 8/1346 useless extension candidates. Maximal degree in co-relation 1646. Up to 44 conditions per place. [2022-11-18 19:33:04,409 INFO L137 encePairwiseOnDemand]: 442/453 looper letters, 39 selfloop transitions, 27 changer transitions 0/429 dead transitions. [2022-11-18 19:33:04,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 429 transitions, 1195 flow [2022-11-18 19:33:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:33:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:33:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2861 transitions. [2022-11-18 19:33:04,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.902239041311889 [2022-11-18 19:33:04,416 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2861 transitions. [2022-11-18 19:33:04,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2861 transitions. [2022-11-18 19:33:04,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:04,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2861 transitions. [2022-11-18 19:33:04,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 408.7142857142857) internal successors, (2861), 7 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:04,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:04,433 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:04,433 INFO L175 Difference]: Start difference. First operand has 409 places, 424 transitions, 1084 flow. Second operand 7 states and 2861 transitions. [2022-11-18 19:33:04,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 429 transitions, 1195 flow [2022-11-18 19:33:04,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 429 transitions, 1121 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:04,447 INFO L231 Difference]: Finished difference. Result has 404 places, 416 transitions, 1010 flow [2022-11-18 19:33:04,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1010, PETRI_PLACES=404, PETRI_TRANSITIONS=416} [2022-11-18 19:33:04,449 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -5 predicate places. [2022-11-18 19:33:04,449 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 416 transitions, 1010 flow [2022-11-18 19:33:04,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:04,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:04,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:04,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:33:04,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:04,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1391236696, now seen corresponding path program 2 times [2022-11-18 19:33:04,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:04,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943577735] [2022-11-18 19:33:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:04,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:04,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:04,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943577735] [2022-11-18 19:33:04,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943577735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:04,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417725163] [2022-11-18 19:33:04,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:33:04,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:04,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:05,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:05,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:33:05,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:33:05,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:05,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:33:05,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:33:05,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:33:05,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417725163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:05,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:05,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2022-11-18 19:33:05,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769881146] [2022-11-18 19:33:05,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:05,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:33:05,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:05,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:33:05,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:33:05,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 453 [2022-11-18 19:33:05,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 416 transitions, 1010 flow. Second operand has 17 states, 17 states have (on average 376.8235294117647) internal successors, (6406), 17 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:05,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:05,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 453 [2022-11-18 19:33:05,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:08,039 INFO L130 PetriNetUnfolder]: 295/4286 cut-off events. [2022-11-18 19:33:08,039 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-11-18 19:33:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 4286 events. 295/4286 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 35548 event pairs, 105 based on Foata normal form. 4/3695 useless extension candidates. Maximal degree in co-relation 4797. Up to 70 conditions per place. [2022-11-18 19:33:08,074 INFO L137 encePairwiseOnDemand]: 433/453 looper letters, 157 selfloop transitions, 65 changer transitions 0/560 dead transitions. [2022-11-18 19:33:08,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 560 transitions, 1819 flow [2022-11-18 19:33:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 19:33:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-18 19:33:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 18130 transitions. [2022-11-18 19:33:08,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8337932303164092 [2022-11-18 19:33:08,111 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 18130 transitions. [2022-11-18 19:33:08,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 18130 transitions. [2022-11-18 19:33:08,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:08,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 18130 transitions. [2022-11-18 19:33:08,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 377.7083333333333) internal successors, (18130), 48 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:08,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 453.0) internal successors, (22197), 49 states have internal predecessors, (22197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:08,201 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 453.0) internal successors, (22197), 49 states have internal predecessors, (22197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:08,201 INFO L175 Difference]: Start difference. First operand has 404 places, 416 transitions, 1010 flow. Second operand 48 states and 18130 transitions. [2022-11-18 19:33:08,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 560 transitions, 1819 flow [2022-11-18 19:33:08,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 560 transitions, 1776 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:08,214 INFO L231 Difference]: Finished difference. Result has 449 places, 441 transitions, 1225 flow [2022-11-18 19:33:08,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1225, PETRI_PLACES=449, PETRI_TRANSITIONS=441} [2022-11-18 19:33:08,216 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 40 predicate places. [2022-11-18 19:33:08,216 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 441 transitions, 1225 flow [2022-11-18 19:33:08,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 376.8235294117647) internal successors, (6406), 17 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:08,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:08,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:08,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:08,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:33:08,426 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:08,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:08,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2021710346, now seen corresponding path program 1 times [2022-11-18 19:33:08,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:08,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51253091] [2022-11-18 19:33:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:08,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:08,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51253091] [2022-11-18 19:33:08,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51253091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:08,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:08,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:08,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857981782] [2022-11-18 19:33:08,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:08,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:08,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:08,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:08,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-18 19:33:08,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 441 transitions, 1225 flow. Second operand has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:08,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:08,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-18 19:33:08,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:09,644 INFO L130 PetriNetUnfolder]: 141/3432 cut-off events. [2022-11-18 19:33:09,644 INFO L131 PetriNetUnfolder]: For 166/180 co-relation queries the response was YES. [2022-11-18 19:33:09,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3980 conditions, 3432 events. 141/3432 cut-off events. For 166/180 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 25832 event pairs, 0 based on Foata normal form. 0/3040 useless extension candidates. Maximal degree in co-relation 3897. Up to 197 conditions per place. [2022-11-18 19:33:09,702 INFO L137 encePairwiseOnDemand]: 440/453 looper letters, 38 selfloop transitions, 9 changer transitions 0/461 dead transitions. [2022-11-18 19:33:09,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 461 transitions, 1362 flow [2022-11-18 19:33:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2061 transitions. [2022-11-18 19:33:09,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909933774834437 [2022-11-18 19:33:09,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2061 transitions. [2022-11-18 19:33:09,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2061 transitions. [2022-11-18 19:33:09,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:09,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2061 transitions. [2022-11-18 19:33:09,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 412.2) internal successors, (2061), 5 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:09,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:09,725 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:09,725 INFO L175 Difference]: Start difference. First operand has 449 places, 441 transitions, 1225 flow. Second operand 5 states and 2061 transitions. [2022-11-18 19:33:09,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 461 transitions, 1362 flow [2022-11-18 19:33:09,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 461 transitions, 1279 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-11-18 19:33:09,740 INFO L231 Difference]: Finished difference. Result has 442 places, 448 transitions, 1209 flow [2022-11-18 19:33:09,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1209, PETRI_PLACES=442, PETRI_TRANSITIONS=448} [2022-11-18 19:33:09,742 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 33 predicate places. [2022-11-18 19:33:09,742 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 448 transitions, 1209 flow [2022-11-18 19:33:09,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:09,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:09,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:09,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:33:09,744 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:09,745 INFO L85 PathProgramCache]: Analyzing trace with hash -53875402, now seen corresponding path program 1 times [2022-11-18 19:33:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:09,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006146829] [2022-11-18 19:33:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:09,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:09,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:09,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006146829] [2022-11-18 19:33:09,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006146829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:09,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829326032] [2022-11-18 19:33:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:09,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:09,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:09,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:09,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:33:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:33:10,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:33:10,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:10,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829326032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:10,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:10,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2022-11-18 19:33:10,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146289182] [2022-11-18 19:33:10,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:10,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:33:10,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:10,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:33:10,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:33:10,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 453 [2022-11-18 19:33:10,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 448 transitions, 1209 flow. Second operand has 9 states, 9 states have (on average 365.8888888888889) internal successors, (3293), 9 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:10,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:10,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 453 [2022-11-18 19:33:10,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:14,520 INFO L130 PetriNetUnfolder]: 1128/15384 cut-off events. [2022-11-18 19:33:14,521 INFO L131 PetriNetUnfolder]: For 632/632 co-relation queries the response was YES. [2022-11-18 19:33:14,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17699 conditions, 15384 events. 1128/15384 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 187434 event pairs, 420 based on Foata normal form. 0/13186 useless extension candidates. Maximal degree in co-relation 17610. Up to 851 conditions per place. [2022-11-18 19:33:14,686 INFO L137 encePairwiseOnDemand]: 440/453 looper letters, 147 selfloop transitions, 24 changer transitions 0/510 dead transitions. [2022-11-18 19:33:14,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 510 transitions, 1771 flow [2022-11-18 19:33:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:33:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:33:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4816 transitions. [2022-11-18 19:33:14,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177958906435727 [2022-11-18 19:33:14,696 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4816 transitions. [2022-11-18 19:33:14,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4816 transitions. [2022-11-18 19:33:14,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:14,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4816 transitions. [2022-11-18 19:33:14,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 370.46153846153845) internal successors, (4816), 13 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:14,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 453.0) internal successors, (6342), 14 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:14,718 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 453.0) internal successors, (6342), 14 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:14,718 INFO L175 Difference]: Start difference. First operand has 442 places, 448 transitions, 1209 flow. Second operand 13 states and 4816 transitions. [2022-11-18 19:33:14,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 510 transitions, 1771 flow [2022-11-18 19:33:14,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 510 transitions, 1763 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:14,733 INFO L231 Difference]: Finished difference. Result has 459 places, 454 transitions, 1296 flow [2022-11-18 19:33:14,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1296, PETRI_PLACES=459, PETRI_TRANSITIONS=454} [2022-11-18 19:33:14,736 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 50 predicate places. [2022-11-18 19:33:14,736 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 454 transitions, 1296 flow [2022-11-18 19:33:14,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 365.8888888888889) internal successors, (3293), 9 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:14,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:14,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:14,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:14,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:33:14,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:14,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:14,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2132495951, now seen corresponding path program 1 times [2022-11-18 19:33:14,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:14,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709176197] [2022-11-18 19:33:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:14,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:33:15,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:15,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709176197] [2022-11-18 19:33:15,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709176197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:15,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675800631] [2022-11-18 19:33:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:15,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:15,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:15,291 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:15,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:33:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:15,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:33:15,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:15,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:16,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675800631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:16,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:16,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-11-18 19:33:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078869699] [2022-11-18 19:33:16,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:16,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:33:16,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:16,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:33:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:33:16,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 453 [2022-11-18 19:33:16,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 454 transitions, 1296 flow. Second operand has 25 states, 25 states have (on average 346.56) internal successors, (8664), 25 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:16,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:16,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 453 [2022-11-18 19:33:16,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:26,058 INFO L130 PetriNetUnfolder]: 2514/33622 cut-off events. [2022-11-18 19:33:26,058 INFO L131 PetriNetUnfolder]: For 1092/1092 co-relation queries the response was YES. [2022-11-18 19:33:26,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38840 conditions, 33622 events. 2514/33622 cut-off events. For 1092/1092 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 481130 event pairs, 945 based on Foata normal form. 35/28743 useless extension candidates. Maximal degree in co-relation 38745. Up to 630 conditions per place. [2022-11-18 19:33:26,452 INFO L137 encePairwiseOnDemand]: 420/453 looper letters, 232 selfloop transitions, 91 changer transitions 0/630 dead transitions. [2022-11-18 19:33:26,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 630 transitions, 2528 flow [2022-11-18 19:33:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 19:33:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-18 19:33:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 14616 transitions. [2022-11-18 19:33:26,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7682119205298014 [2022-11-18 19:33:26,472 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 14616 transitions. [2022-11-18 19:33:26,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 14616 transitions. [2022-11-18 19:33:26,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:26,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 14616 transitions. [2022-11-18 19:33:26,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 348.0) internal successors, (14616), 42 states have internal predecessors, (14616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:26,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 453.0) internal successors, (19479), 43 states have internal predecessors, (19479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:26,757 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 453.0) internal successors, (19479), 43 states have internal predecessors, (19479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:26,757 INFO L175 Difference]: Start difference. First operand has 459 places, 454 transitions, 1296 flow. Second operand 42 states and 14616 transitions. [2022-11-18 19:33:26,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 630 transitions, 2528 flow [2022-11-18 19:33:26,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 630 transitions, 2506 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:33:26,777 INFO L231 Difference]: Finished difference. Result has 510 places, 500 transitions, 1804 flow [2022-11-18 19:33:26,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1804, PETRI_PLACES=510, PETRI_TRANSITIONS=500} [2022-11-18 19:33:26,779 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 101 predicate places. [2022-11-18 19:33:26,779 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 500 transitions, 1804 flow [2022-11-18 19:33:26,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 346.56) internal successors, (8664), 25 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:26,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:26,782 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:26,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 19:33:26,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:33:26,989 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1508901301, now seen corresponding path program 1 times [2022-11-18 19:33:26,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:26,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031191714] [2022-11-18 19:33:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:27,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:27,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031191714] [2022-11-18 19:33:27,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031191714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:27,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008180630] [2022-11-18 19:33:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:27,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:27,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:27,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:27,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:33:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:27,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:33:27,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:27,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:28,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008180630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:28,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:28,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 19:33:28,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833659000] [2022-11-18 19:33:28,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:28,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:33:28,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:33:28,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:33:28,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-18 19:33:28,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 500 transitions, 1804 flow. Second operand has 32 states, 32 states have (on average 405.28125) internal successors, (12969), 32 states have internal predecessors, (12969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:28,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:28,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-18 19:33:28,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:36,976 INFO L130 PetriNetUnfolder]: 1201/28701 cut-off events. [2022-11-18 19:33:36,976 INFO L131 PetriNetUnfolder]: For 4434/4569 co-relation queries the response was YES. [2022-11-18 19:33:37,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34494 conditions, 28701 events. 1201/28701 cut-off events. For 4434/4569 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 369596 event pairs, 0 based on Foata normal form. 24/25485 useless extension candidates. Maximal degree in co-relation 34386. Up to 376 conditions per place. [2022-11-18 19:33:37,486 INFO L137 encePairwiseOnDemand]: 441/453 looper letters, 216 selfloop transitions, 116 changer transitions 0/749 dead transitions. [2022-11-18 19:33:37,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 749 transitions, 3671 flow [2022-11-18 19:33:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 19:33:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 19:33:37,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 17998 transitions. [2022-11-18 19:33:37,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9029700983343367 [2022-11-18 19:33:37,510 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 17998 transitions. [2022-11-18 19:33:37,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 17998 transitions. [2022-11-18 19:33:37,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:37,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 17998 transitions. [2022-11-18 19:33:37,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 409.04545454545456) internal successors, (17998), 44 states have internal predecessors, (17998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:37,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 453.0) internal successors, (20385), 45 states have internal predecessors, (20385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:37,573 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 453.0) internal successors, (20385), 45 states have internal predecessors, (20385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:37,573 INFO L175 Difference]: Start difference. First operand has 510 places, 500 transitions, 1804 flow. Second operand 44 states and 17998 transitions. [2022-11-18 19:33:37,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 749 transitions, 3671 flow [2022-11-18 19:33:37,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 749 transitions, 3546 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-11-18 19:33:37,628 INFO L231 Difference]: Finished difference. Result has 549 places, 568 transitions, 2514 flow [2022-11-18 19:33:37,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2514, PETRI_PLACES=549, PETRI_TRANSITIONS=568} [2022-11-18 19:33:37,631 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 140 predicate places. [2022-11-18 19:33:37,631 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 568 transitions, 2514 flow [2022-11-18 19:33:37,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 405.28125) internal successors, (12969), 32 states have internal predecessors, (12969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:37,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:37,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:37,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:37,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:33:37,842 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:37,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:37,843 INFO L85 PathProgramCache]: Analyzing trace with hash 661656874, now seen corresponding path program 1 times [2022-11-18 19:33:37,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:37,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658680506] [2022-11-18 19:33:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:37,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:33:38,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:38,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658680506] [2022-11-18 19:33:38,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658680506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:38,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950044493] [2022-11-18 19:33:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:38,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:38,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:38,024 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:38,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:33:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:38,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:33:38,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:33:38,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:38,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950044493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:38,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:38,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:33:38,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441488132] [2022-11-18 19:33:38,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:38,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:38,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:38,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:38,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-18 19:33:38,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 568 transitions, 2514 flow. Second operand has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:38,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:38,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-18 19:33:38,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:47,817 INFO L130 PetriNetUnfolder]: 1201/28581 cut-off events. [2022-11-18 19:33:47,817 INFO L131 PetriNetUnfolder]: For 4608/4743 co-relation queries the response was YES. [2022-11-18 19:33:48,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35205 conditions, 28581 events. 1201/28581 cut-off events. For 4608/4743 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 367790 event pairs, 0 based on Foata normal form. 120/25461 useless extension candidates. Maximal degree in co-relation 35088. Up to 840 conditions per place. [2022-11-18 19:33:48,653 INFO L137 encePairwiseOnDemand]: 442/453 looper letters, 41 selfloop transitions, 33 changer transitions 0/574 dead transitions. [2022-11-18 19:33:48,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 574 transitions, 2653 flow [2022-11-18 19:33:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:33:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:33:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2861 transitions. [2022-11-18 19:33:48,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.902239041311889 [2022-11-18 19:33:48,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2861 transitions. [2022-11-18 19:33:48,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2861 transitions. [2022-11-18 19:33:48,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:48,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2861 transitions. [2022-11-18 19:33:48,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 408.7142857142857) internal successors, (2861), 7 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:48,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:48,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:48,670 INFO L175 Difference]: Start difference. First operand has 549 places, 568 transitions, 2514 flow. Second operand 7 states and 2861 transitions. [2022-11-18 19:33:48,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 574 transitions, 2653 flow [2022-11-18 19:33:48,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 574 transitions, 2570 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-18 19:33:48,732 INFO L231 Difference]: Finished difference. Result has 538 places, 563 transitions, 2459 flow [2022-11-18 19:33:48,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2459, PETRI_PLACES=538, PETRI_TRANSITIONS=563} [2022-11-18 19:33:48,735 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 129 predicate places. [2022-11-18 19:33:48,735 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 563 transitions, 2459 flow [2022-11-18 19:33:48,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:48,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:48,736 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:48,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:48,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:48,942 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-18 19:33:48,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:48,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1740341098, now seen corresponding path program 2 times [2022-11-18 19:33:48,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:48,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101257572] [2022-11-18 19:33:48,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:48,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:49,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:49,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101257572] [2022-11-18 19:33:49,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101257572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:49,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508725295] [2022-11-18 19:33:49,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:33:49,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:49,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:49,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:49,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8abe8f0-06e5-43a7-8561-bbf0fb23f916/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:33:49,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:33:49,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:49,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:33:49,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:33:49,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:33:50,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508725295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:50,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:50,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 22 [2022-11-18 19:33:50,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438891354] [2022-11-18 19:33:50,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:50,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:33:50,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:50,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:33:50,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:33:50,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 453 [2022-11-18 19:33:50,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 563 transitions, 2459 flow. Second operand has 22 states, 22 states have (on average 346.8181818181818) internal successors, (7630), 22 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:50,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:50,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 453 [2022-11-18 19:33:50,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand