./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:54:11,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:54:11,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:54:11,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:54:11,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:54:11,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:54:11,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:54:11,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:54:11,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:54:11,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:54:11,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:54:11,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:54:11,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:54:11,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:54:11,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:54:11,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:54:11,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:54:11,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:54:11,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:54:11,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:54:11,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:54:11,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:54:11,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:54:11,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:54:11,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:54:11,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:54:11,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:54:11,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:54:11,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:54:11,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:54:11,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:54:11,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:54:11,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:54:11,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:54:11,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:54:11,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:54:11,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:54:11,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:54:11,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:54:11,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:54:11,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:54:11,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:54:11,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:54:11,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:54:11,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:54:11,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:54:11,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:54:11,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:54:11,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:54:11,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:54:11,938 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:54:11,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:54:11,938 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:54:11,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:54:11,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:54:11,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:54:11,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:54:11,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:54:11,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:54:11,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:54:11,940 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:54:11,940 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:54:11,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:54:11,941 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:54:11,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:54:11,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:54:11,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:54:11,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:54:11,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:11,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:54:11,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:54:11,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:54:11,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:54:11,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:54:11,943 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:54:11,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:54:11,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:54:11,944 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_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2022-11-20 10:54:12,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:54:12,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:54:12,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:54:12,305 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:54:12,306 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:54:12,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/stack_longest-2.i [2022-11-20 10:54:16,156 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:54:16,631 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:54:16,637 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/sv-benchmarks/c/pthread/stack_longest-2.i [2022-11-20 10:54:16,659 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/data/1afb98f1b/34058f8d8d3a426a89bf4e87ab8165e1/FLAG16cbcf48b [2022-11-20 10:54:16,759 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/data/1afb98f1b/34058f8d8d3a426a89bf4e87ab8165e1 [2022-11-20 10:54:16,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:54:16,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:54:16,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:16,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:54:16,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:54:16,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:16" (1/1) ... [2022-11-20 10:54:16,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae01b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:16, skipping insertion in model container [2022-11-20 10:54:16,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:16" (1/1) ... [2022-11-20 10:54:16,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:54:16,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:54:17,538 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2022-11-20 10:54:17,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:17,615 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:54:17,681 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2022-11-20 10:54:17,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:17,793 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:54:17,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17 WrapperNode [2022-11-20 10:54:17,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:17,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:17,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:54:17,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:54:17,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,910 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 156 [2022-11-20 10:54:17,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:17,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:54:17,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:54:17,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:54:17,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:17,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:54:17,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:54:17,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:54:17,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:54:17,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (1/1) ... [2022-11-20 10:54:18,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:18,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:18,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:54:18,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:54:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 10:54:18,096 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 10:54:18,096 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 10:54:18,097 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 10:54:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:54:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:54:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:54:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:54:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:54:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:54:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:54:18,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:54:18,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:54:18,101 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:54:18,395 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:54:18,398 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:54:18,922 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:54:18,933 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:54:18,934 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:54:18,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:18 BoogieIcfgContainer [2022-11-20 10:54:18,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:54:18,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:54:18,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:54:18,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:54:18,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:54:16" (1/3) ... [2022-11-20 10:54:18,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1815db11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:18, skipping insertion in model container [2022-11-20 10:54:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:17" (2/3) ... [2022-11-20 10:54:18,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1815db11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:18, skipping insertion in model container [2022-11-20 10:54:18,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:18" (3/3) ... [2022-11-20 10:54:18,949 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2022-11-20 10:54:18,962 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:54:18,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:54:18,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 10:54:18,977 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:54:19,125 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:54:19,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 184 transitions, 384 flow [2022-11-20 10:54:19,416 INFO L130 PetriNetUnfolder]: 10/182 cut-off events. [2022-11-20 10:54:19,422 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:54:19,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 182 events. 10/182 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 467 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-11-20 10:54:19,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 184 transitions, 384 flow [2022-11-20 10:54:19,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 172 transitions, 353 flow [2022-11-20 10:54:19,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:54:19,485 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;@2f12e604, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:54:19,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 10:54:19,519 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-11-20 10:54:19,519 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:54:19,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:19,520 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:19,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:19,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash 719672581, now seen corresponding path program 1 times [2022-11-20 10:54:19,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:19,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394233024] [2022-11-20 10:54:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:19,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:20,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:20,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394233024] [2022-11-20 10:54:20,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394233024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:20,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:20,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533391067] [2022-11-20 10:54:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:20,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:20,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:20,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:20,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:20,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 10:54:20,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 172 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:20,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:20,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 10:54:20,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:20,553 INFO L130 PetriNetUnfolder]: 26/292 cut-off events. [2022-11-20 10:54:20,553 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-20 10:54:20,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 292 events. 26/292 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1225 event pairs, 2 based on Foata normal form. 40/302 useless extension candidates. Maximal degree in co-relation 323. Up to 36 conditions per place. [2022-11-20 10:54:20,566 INFO L137 encePairwiseOnDemand]: 172/184 looper letters, 19 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2022-11-20 10:54:20,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 172 transitions, 408 flow [2022-11-20 10:54:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:54:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2022-11-20 10:54:20,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9260869565217391 [2022-11-20 10:54:20,597 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2022-11-20 10:54:20,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2022-11-20 10:54:20,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:20,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2022-11-20 10:54:20,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:20,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:20,628 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:20,630 INFO L175 Difference]: Start difference. First operand has 169 places, 172 transitions, 353 flow. Second operand 5 states and 852 transitions. [2022-11-20 10:54:20,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 172 transitions, 408 flow [2022-11-20 10:54:20,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 172 transitions, 397 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:54:20,642 INFO L231 Difference]: Finished difference. Result has 169 places, 166 transitions, 362 flow [2022-11-20 10:54:20,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=169, PETRI_TRANSITIONS=166} [2022-11-20 10:54:20,652 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 0 predicate places. [2022-11-20 10:54:20,653 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 166 transitions, 362 flow [2022-11-20 10:54:20,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:20,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:20,655 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] [2022-11-20 10:54:20,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:54:20,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:20,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:20,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1562072646, now seen corresponding path program 1 times [2022-11-20 10:54:20,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:20,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950769767] [2022-11-20 10:54:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:20,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950769767] [2022-11-20 10:54:20,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950769767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:20,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:20,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987541416] [2022-11-20 10:54:20,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:20,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:20,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:20,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:20,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:20,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 184 [2022-11-20 10:54:20,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 166 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:20,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:20,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 184 [2022-11-20 10:54:20,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:21,367 INFO L130 PetriNetUnfolder]: 144/1251 cut-off events. [2022-11-20 10:54:21,367 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-20 10:54:21,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 1251 events. 144/1251 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7622 event pairs, 63 based on Foata normal form. 0/1096 useless extension candidates. Maximal degree in co-relation 1239. Up to 191 conditions per place. [2022-11-20 10:54:21,381 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 20 selfloop transitions, 3 changer transitions 0/173 dead transitions. [2022-11-20 10:54:21,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 173 transitions, 425 flow [2022-11-20 10:54:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:54:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2022-11-20 10:54:21,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9148550724637681 [2022-11-20 10:54:21,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2022-11-20 10:54:21,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2022-11-20 10:54:21,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:21,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2022-11-20 10:54:21,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,390 INFO L175 Difference]: Start difference. First operand has 169 places, 166 transitions, 362 flow. Second operand 3 states and 505 transitions. [2022-11-20 10:54:21,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 173 transitions, 425 flow [2022-11-20 10:54:21,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 173 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:54:21,402 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 377 flow [2022-11-20 10:54:21,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2022-11-20 10:54:21,404 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 2 predicate places. [2022-11-20 10:54:21,404 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 377 flow [2022-11-20 10:54:21,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:21,406 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] [2022-11-20 10:54:21,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:54:21,406 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:21,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:21,407 INFO L85 PathProgramCache]: Analyzing trace with hash 220319449, now seen corresponding path program 1 times [2022-11-20 10:54:21,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:21,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548364636] [2022-11-20 10:54:21,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:21,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:21,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:21,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548364636] [2022-11-20 10:54:21,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548364636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:21,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:21,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:21,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787783837] [2022-11-20 10:54:21,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:21,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:21,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:21,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:21,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:21,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 10:54:21,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:21,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 10:54:21,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:21,886 INFO L130 PetriNetUnfolder]: 96/790 cut-off events. [2022-11-20 10:54:21,886 INFO L131 PetriNetUnfolder]: For 119/120 co-relation queries the response was YES. [2022-11-20 10:54:21,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 790 events. 96/790 cut-off events. For 119/120 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3695 event pairs, 12 based on Foata normal form. 7/719 useless extension candidates. Maximal degree in co-relation 1036. Up to 87 conditions per place. [2022-11-20 10:54:21,898 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 12 selfloop transitions, 8 changer transitions 0/170 dead transitions. [2022-11-20 10:54:21,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 424 flow [2022-11-20 10:54:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:54:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-11-20 10:54:21,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-20 10:54:21,903 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-11-20 10:54:21,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-11-20 10:54:21,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:21,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-11-20 10:54:21,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,912 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 377 flow. Second operand 5 states and 828 transitions. [2022-11-20 10:54:21,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 424 flow [2022-11-20 10:54:21,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:54:21,922 INFO L231 Difference]: Finished difference. Result has 174 places, 167 transitions, 394 flow [2022-11-20 10:54:21,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=174, PETRI_TRANSITIONS=167} [2022-11-20 10:54:21,926 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 5 predicate places. [2022-11-20 10:54:21,926 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 167 transitions, 394 flow [2022-11-20 10:54:21,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:21,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:21,928 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 10:54:21,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:54:21,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:21,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:21,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1760031137, now seen corresponding path program 1 times [2022-11-20 10:54:21,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:21,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250345439] [2022-11-20 10:54:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:21,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:22,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250345439] [2022-11-20 10:54:22,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250345439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:22,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36495615] [2022-11-20 10:54:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:22,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:22,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:22,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:22,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:54:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:54:22,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:22,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:22,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36495615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:22,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:22,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:54:22,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831096458] [2022-11-20 10:54:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:22,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:54:22,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 10:54:22,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 167 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:22,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 10:54:22,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:22,797 INFO L130 PetriNetUnfolder]: 91/774 cut-off events. [2022-11-20 10:54:22,797 INFO L131 PetriNetUnfolder]: For 172/173 co-relation queries the response was YES. [2022-11-20 10:54:22,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 774 events. 91/774 cut-off events. For 172/173 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3581 event pairs, 8 based on Foata normal form. 7/708 useless extension candidates. Maximal degree in co-relation 1059. Up to 65 conditions per place. [2022-11-20 10:54:22,813 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 17 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2022-11-20 10:54:22,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 455 flow [2022-11-20 10:54:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:54:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:54:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1158 transitions. [2022-11-20 10:54:22,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8990683229813664 [2022-11-20 10:54:22,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1158 transitions. [2022-11-20 10:54:22,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1158 transitions. [2022-11-20 10:54:22,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:22,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1158 transitions. [2022-11-20 10:54:22,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,894 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,894 INFO L175 Difference]: Start difference. First operand has 174 places, 167 transitions, 394 flow. Second operand 7 states and 1158 transitions. [2022-11-20 10:54:22,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 455 flow [2022-11-20 10:54:22,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 173 transitions, 443 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:54:22,902 INFO L231 Difference]: Finished difference. Result has 176 places, 166 transitions, 390 flow [2022-11-20 10:54:22,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=176, PETRI_TRANSITIONS=166} [2022-11-20 10:54:22,904 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 7 predicate places. [2022-11-20 10:54:22,905 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 166 transitions, 390 flow [2022-11-20 10:54:22,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:22,908 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] [2022-11-20 10:54:22,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:23,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:23,115 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:23,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:23,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1034852724, now seen corresponding path program 1 times [2022-11-20 10:54:23,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:23,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508139357] [2022-11-20 10:54:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:23,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:23,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:23,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508139357] [2022-11-20 10:54:23,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508139357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:23,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:23,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:23,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549977389] [2022-11-20 10:54:23,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:23,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:23,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:23,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:23,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 10:54:23,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 166 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:23,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 10:54:23,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:23,849 INFO L130 PetriNetUnfolder]: 289/1946 cut-off events. [2022-11-20 10:54:23,849 INFO L131 PetriNetUnfolder]: For 234/245 co-relation queries the response was YES. [2022-11-20 10:54:23,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2865 conditions, 1946 events. 289/1946 cut-off events. For 234/245 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13888 event pairs, 19 based on Foata normal form. 7/1804 useless extension candidates. Maximal degree in co-relation 2428. Up to 389 conditions per place. [2022-11-20 10:54:23,868 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 42 selfloop transitions, 8 changer transitions 0/193 dead transitions. [2022-11-20 10:54:23,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 193 transitions, 557 flow [2022-11-20 10:54:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:54:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-20 10:54:23,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8934782608695652 [2022-11-20 10:54:23,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-20 10:54:23,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-20 10:54:23,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:23,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-20 10:54:23,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,880 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,880 INFO L175 Difference]: Start difference. First operand has 176 places, 166 transitions, 390 flow. Second operand 5 states and 822 transitions. [2022-11-20 10:54:23,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 193 transitions, 557 flow [2022-11-20 10:54:23,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 193 transitions, 546 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 10:54:23,891 INFO L231 Difference]: Finished difference. Result has 178 places, 171 transitions, 431 flow [2022-11-20 10:54:23,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=178, PETRI_TRANSITIONS=171} [2022-11-20 10:54:23,895 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 9 predicate places. [2022-11-20 10:54:23,895 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 171 transitions, 431 flow [2022-11-20 10:54:23,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:23,896 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] [2022-11-20 10:54:23,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:54:23,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash -901114048, now seen corresponding path program 1 times [2022-11-20 10:54:23,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:23,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701018519] [2022-11-20 10:54:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:24,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:24,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701018519] [2022-11-20 10:54:24,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701018519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:24,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:24,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:24,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799633412] [2022-11-20 10:54:24,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:24,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:24,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:24,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 10:54:24,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 171 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:24,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 10:54:24,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:24,403 INFO L130 PetriNetUnfolder]: 64/1064 cut-off events. [2022-11-20 10:54:24,403 INFO L131 PetriNetUnfolder]: For 112/117 co-relation queries the response was YES. [2022-11-20 10:54:24,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 1064 events. 64/1064 cut-off events. For 112/117 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5258 event pairs, 14 based on Foata normal form. 0/994 useless extension candidates. Maximal degree in co-relation 1146. Up to 56 conditions per place. [2022-11-20 10:54:24,420 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 19 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2022-11-20 10:54:24,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 180 transitions, 501 flow [2022-11-20 10:54:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:54:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 836 transitions. [2022-11-20 10:54:24,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.908695652173913 [2022-11-20 10:54:24,424 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 836 transitions. [2022-11-20 10:54:24,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 836 transitions. [2022-11-20 10:54:24,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:24,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 836 transitions. [2022-11-20 10:54:24,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,431 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,432 INFO L175 Difference]: Start difference. First operand has 178 places, 171 transitions, 431 flow. Second operand 5 states and 836 transitions. [2022-11-20 10:54:24,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 180 transitions, 501 flow [2022-11-20 10:54:24,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 180 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:54:24,439 INFO L231 Difference]: Finished difference. Result has 184 places, 174 transitions, 458 flow [2022-11-20 10:54:24,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=184, PETRI_TRANSITIONS=174} [2022-11-20 10:54:24,443 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 15 predicate places. [2022-11-20 10:54:24,448 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 174 transitions, 458 flow [2022-11-20 10:54:24,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:24,457 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] [2022-11-20 10:54:24,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:54:24,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:24,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:24,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1217430042, now seen corresponding path program 1 times [2022-11-20 10:54:24,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:24,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324331182] [2022-11-20 10:54:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:24,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:24,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:24,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324331182] [2022-11-20 10:54:24,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324331182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:24,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:24,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:24,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898761844] [2022-11-20 10:54:24,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:24,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:24,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:24,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:24,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:24,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 10:54:24,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 174 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:24,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 10:54:24,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:24,965 INFO L130 PetriNetUnfolder]: 38/952 cut-off events. [2022-11-20 10:54:24,965 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-20 10:54:24,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 952 events. 38/952 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5094 event pairs, 13 based on Foata normal form. 10/919 useless extension candidates. Maximal degree in co-relation 896. Up to 39 conditions per place. [2022-11-20 10:54:24,975 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 12 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2022-11-20 10:54:24,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 173 transitions, 478 flow [2022-11-20 10:54:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:54:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-11-20 10:54:24,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130434782608695 [2022-11-20 10:54:24,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-11-20 10:54:24,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-11-20 10:54:24,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:24,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-11-20 10:54:24,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,983 INFO L175 Difference]: Start difference. First operand has 184 places, 174 transitions, 458 flow. Second operand 3 states and 504 transitions. [2022-11-20 10:54:24,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 173 transitions, 478 flow [2022-11-20 10:54:24,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 173 transitions, 471 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-20 10:54:24,990 INFO L231 Difference]: Finished difference. Result has 184 places, 171 transitions, 440 flow [2022-11-20 10:54:24,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=184, PETRI_TRANSITIONS=171} [2022-11-20 10:54:24,991 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 15 predicate places. [2022-11-20 10:54:24,991 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 171 transitions, 440 flow [2022-11-20 10:54:24,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:24,997 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] [2022-11-20 10:54:24,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:54:24,998 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1036157545, now seen corresponding path program 1 times [2022-11-20 10:54:24,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:24,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661565017] [2022-11-20 10:54:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:25,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:25,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:25,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661565017] [2022-11-20 10:54:25,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661565017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:25,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:25,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:25,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453792418] [2022-11-20 10:54:25,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:25,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:25,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 10:54:25,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 171 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:25,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 10:54:25,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:25,715 INFO L130 PetriNetUnfolder]: 130/1333 cut-off events. [2022-11-20 10:54:25,716 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-11-20 10:54:25,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 1333 events. 130/1333 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8020 event pairs, 38 based on Foata normal form. 4/1281 useless extension candidates. Maximal degree in co-relation 1189. Up to 123 conditions per place. [2022-11-20 10:54:25,727 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 55 selfloop transitions, 11 changer transitions 0/206 dead transitions. [2022-11-20 10:54:25,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 206 transitions, 667 flow [2022-11-20 10:54:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:54:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:54:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1252 transitions. [2022-11-20 10:54:25,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8505434782608695 [2022-11-20 10:54:25,732 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1252 transitions. [2022-11-20 10:54:25,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1252 transitions. [2022-11-20 10:54:25,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:25,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1252 transitions. [2022-11-20 10:54:25,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.5) internal successors, (1252), 8 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,742 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,743 INFO L175 Difference]: Start difference. First operand has 184 places, 171 transitions, 440 flow. Second operand 8 states and 1252 transitions. [2022-11-20 10:54:25,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 206 transitions, 667 flow [2022-11-20 10:54:25,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 206 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:54:25,750 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 502 flow [2022-11-20 10:54:25,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2022-11-20 10:54:25,751 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 24 predicate places. [2022-11-20 10:54:25,752 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 502 flow [2022-11-20 10:54:25,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:25,753 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] [2022-11-20 10:54:25,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:54:25,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash -687664420, now seen corresponding path program 1 times [2022-11-20 10:54:25,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:25,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182956571] [2022-11-20 10:54:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:25,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182956571] [2022-11-20 10:54:25,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182956571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:25,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:25,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:25,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210863584] [2022-11-20 10:54:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:25,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:25,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:25,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:25,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:25,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 10:54:25,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 177 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:25,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 10:54:25,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:26,217 INFO L130 PetriNetUnfolder]: 102/1277 cut-off events. [2022-11-20 10:54:26,217 INFO L131 PetriNetUnfolder]: For 330/332 co-relation queries the response was YES. [2022-11-20 10:54:26,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 1277 events. 102/1277 cut-off events. For 330/332 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7183 event pairs, 24 based on Foata normal form. 22/1260 useless extension candidates. Maximal degree in co-relation 1563. Up to 114 conditions per place. [2022-11-20 10:54:26,230 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 28 selfloop transitions, 8 changer transitions 0/181 dead transitions. [2022-11-20 10:54:26,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 181 transitions, 582 flow [2022-11-20 10:54:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:54:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 803 transitions. [2022-11-20 10:54:26,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8728260869565218 [2022-11-20 10:54:26,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 803 transitions. [2022-11-20 10:54:26,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 803 transitions. [2022-11-20 10:54:26,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:26,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 803 transitions. [2022-11-20 10:54:26,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:26,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:26,241 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:26,242 INFO L175 Difference]: Start difference. First operand has 193 places, 177 transitions, 502 flow. Second operand 5 states and 803 transitions. [2022-11-20 10:54:26,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 181 transitions, 582 flow [2022-11-20 10:54:26,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 181 transitions, 576 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:54:26,249 INFO L231 Difference]: Finished difference. Result has 192 places, 174 transitions, 517 flow [2022-11-20 10:54:26,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=517, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2022-11-20 10:54:26,251 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 23 predicate places. [2022-11-20 10:54:26,251 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 517 flow [2022-11-20 10:54:26,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:26,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:26,252 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:26,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:54:26,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash 710031927, now seen corresponding path program 1 times [2022-11-20 10:54:26,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:26,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469579122] [2022-11-20 10:54:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:26,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:26,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:26,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469579122] [2022-11-20 10:54:26,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469579122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:26,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188153160] [2022-11-20 10:54:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:26,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:26,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:26,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:54:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:26,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:54:26,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:26,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:27,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188153160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:27,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:27,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:54:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877665818] [2022-11-20 10:54:27,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:54:27,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:54:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:54:27,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 10:54:27,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 517 flow. Second operand has 12 states, 12 states have (on average 157.25) internal successors, (1887), 12 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:27,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:27,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 10:54:27,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:28,067 INFO L130 PetriNetUnfolder]: 160/2260 cut-off events. [2022-11-20 10:54:28,067 INFO L131 PetriNetUnfolder]: For 716/716 co-relation queries the response was YES. [2022-11-20 10:54:28,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 2260 events. 160/2260 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 14761 event pairs, 32 based on Foata normal form. 25/2222 useless extension candidates. Maximal degree in co-relation 2895. Up to 107 conditions per place. [2022-11-20 10:54:28,089 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 78 selfloop transitions, 34 changer transitions 0/256 dead transitions. [2022-11-20 10:54:28,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 256 transitions, 1079 flow [2022-11-20 10:54:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:54:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 10:54:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3189 transitions. [2022-11-20 10:54:28,099 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665760869565218 [2022-11-20 10:54:28,099 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3189 transitions. [2022-11-20 10:54:28,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3189 transitions. [2022-11-20 10:54:28,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:28,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3189 transitions. [2022-11-20 10:54:28,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 159.45) internal successors, (3189), 20 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:28,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 184.0) internal successors, (3864), 21 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:28,123 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 184.0) internal successors, (3864), 21 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:28,123 INFO L175 Difference]: Start difference. First operand has 192 places, 174 transitions, 517 flow. Second operand 20 states and 3189 transitions. [2022-11-20 10:54:28,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 256 transitions, 1079 flow [2022-11-20 10:54:28,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 256 transitions, 1057 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-20 10:54:28,135 INFO L231 Difference]: Finished difference. Result has 216 places, 201 transitions, 780 flow [2022-11-20 10:54:28,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=780, PETRI_PLACES=216, PETRI_TRANSITIONS=201} [2022-11-20 10:54:28,138 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 47 predicate places. [2022-11-20 10:54:28,138 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 201 transitions, 780 flow [2022-11-20 10:54:28,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.25) internal successors, (1887), 12 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:28,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:28,140 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:28,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:28,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:54:28,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:28,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:28,352 INFO L85 PathProgramCache]: Analyzing trace with hash 536153767, now seen corresponding path program 1 times [2022-11-20 10:54:28,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:28,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272782024] [2022-11-20 10:54:28,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:28,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:28,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:28,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272782024] [2022-11-20 10:54:28,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272782024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:28,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771541033] [2022-11-20 10:54:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:28,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:28,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:28,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:28,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:54:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:28,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:54:28,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:29,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:29,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771541033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:29,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:29,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:54:29,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869346590] [2022-11-20 10:54:29,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:29,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:29,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:54:29,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 10:54:29,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 201 transitions, 780 flow. Second operand has 6 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:29,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 10:54:29,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:29,821 INFO L130 PetriNetUnfolder]: 154/2404 cut-off events. [2022-11-20 10:54:29,822 INFO L131 PetriNetUnfolder]: For 1498/1498 co-relation queries the response was YES. [2022-11-20 10:54:29,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 2404 events. 154/2404 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 15247 event pairs, 31 based on Foata normal form. 36/2370 useless extension candidates. Maximal degree in co-relation 3524. Up to 231 conditions per place. [2022-11-20 10:54:29,852 INFO L137 encePairwiseOnDemand]: 174/184 looper letters, 68 selfloop transitions, 20 changer transitions 0/232 dead transitions. [2022-11-20 10:54:29,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 232 transitions, 1142 flow [2022-11-20 10:54:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:54:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:54:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1280 transitions. [2022-11-20 10:54:29,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2022-11-20 10:54:29,857 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1280 transitions. [2022-11-20 10:54:29,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1280 transitions. [2022-11-20 10:54:29,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:29,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1280 transitions. [2022-11-20 10:54:29,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,867 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,868 INFO L175 Difference]: Start difference. First operand has 216 places, 201 transitions, 780 flow. Second operand 8 states and 1280 transitions. [2022-11-20 10:54:29,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 232 transitions, 1142 flow [2022-11-20 10:54:29,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 232 transitions, 1050 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 10:54:29,887 INFO L231 Difference]: Finished difference. Result has 221 places, 212 transitions, 911 flow [2022-11-20 10:54:29,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=221, PETRI_TRANSITIONS=212} [2022-11-20 10:54:29,888 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 52 predicate places. [2022-11-20 10:54:29,889 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 212 transitions, 911 flow [2022-11-20 10:54:29,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:29,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:29,890 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:29,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:30,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:54:30,112 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:30,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash 245223797, now seen corresponding path program 1 times [2022-11-20 10:54:30,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:30,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111293471] [2022-11-20 10:54:30,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:30,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:54:30,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:30,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111293471] [2022-11-20 10:54:30,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111293471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:30,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:30,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:30,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070662775] [2022-11-20 10:54:30,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:30,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:30,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:30,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 10:54:30,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 212 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:30,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:30,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 10:54:30,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:30,863 INFO L130 PetriNetUnfolder]: 91/2069 cut-off events. [2022-11-20 10:54:30,864 INFO L131 PetriNetUnfolder]: For 983/983 co-relation queries the response was YES. [2022-11-20 10:54:30,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 2069 events. 91/2069 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11438 event pairs, 11 based on Foata normal form. 19/2025 useless extension candidates. Maximal degree in co-relation 2863. Up to 107 conditions per place. [2022-11-20 10:54:30,890 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 12 selfloop transitions, 8 changer transitions 0/215 dead transitions. [2022-11-20 10:54:30,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 215 transitions, 961 flow [2022-11-20 10:54:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:54:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-11-20 10:54:30,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-20 10:54:30,894 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-11-20 10:54:30,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-11-20 10:54:30,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:30,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-11-20 10:54:30,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:30,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:30,923 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:30,923 INFO L175 Difference]: Start difference. First operand has 221 places, 212 transitions, 911 flow. Second operand 5 states and 828 transitions. [2022-11-20 10:54:30,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 215 transitions, 961 flow [2022-11-20 10:54:30,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 215 transitions, 941 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-20 10:54:30,939 INFO L231 Difference]: Finished difference. Result has 222 places, 212 transitions, 911 flow [2022-11-20 10:54:30,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=222, PETRI_TRANSITIONS=212} [2022-11-20 10:54:30,942 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 53 predicate places. [2022-11-20 10:54:30,943 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 212 transitions, 911 flow [2022-11-20 10:54:30,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:30,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:30,944 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:30,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:54:30,944 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash -987996382, now seen corresponding path program 1 times [2022-11-20 10:54:30,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:30,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184510143] [2022-11-20 10:54:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:30,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:31,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184510143] [2022-11-20 10:54:31,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184510143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:31,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566173262] [2022-11-20 10:54:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:31,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:31,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:31,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:31,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:54:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:31,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:31,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:31,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:31,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566173262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:31,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:31,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 10:54:31,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745508468] [2022-11-20 10:54:31,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:31,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:31,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:31,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:31,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:54:31,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-20 10:54:31,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 212 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:31,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:31,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-20 10:54:31,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:32,144 INFO L130 PetriNetUnfolder]: 88/2075 cut-off events. [2022-11-20 10:54:32,145 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2022-11-20 10:54:32,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 2075 events. 88/2075 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11369 event pairs, 17 based on Foata normal form. 19/2031 useless extension candidates. Maximal degree in co-relation 2961. Up to 112 conditions per place. [2022-11-20 10:54:32,178 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 13 selfloop transitions, 5 changer transitions 3/213 dead transitions. [2022-11-20 10:54:32,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 213 transitions, 951 flow [2022-11-20 10:54:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:54:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 663 transitions. [2022-11-20 10:54:32,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9008152173913043 [2022-11-20 10:54:32,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 663 transitions. [2022-11-20 10:54:32,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 663 transitions. [2022-11-20 10:54:32,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:32,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 663 transitions. [2022-11-20 10:54:32,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:32,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:32,188 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:32,188 INFO L175 Difference]: Start difference. First operand has 222 places, 212 transitions, 911 flow. Second operand 4 states and 663 transitions. [2022-11-20 10:54:32,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 213 transitions, 951 flow [2022-11-20 10:54:32,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 213 transitions, 939 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:54:32,204 INFO L231 Difference]: Finished difference. Result has 221 places, 208 transitions, 899 flow [2022-11-20 10:54:32,205 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=899, PETRI_PLACES=221, PETRI_TRANSITIONS=208} [2022-11-20 10:54:32,207 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 52 predicate places. [2022-11-20 10:54:32,207 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 208 transitions, 899 flow [2022-11-20 10:54:32,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:32,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:32,208 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:32,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:32,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:54:32,421 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:32,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:32,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1746979404, now seen corresponding path program 1 times [2022-11-20 10:54:32,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:32,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126346768] [2022-11-20 10:54:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:32,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:32,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:32,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126346768] [2022-11-20 10:54:32,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126346768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:32,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043634427] [2022-11-20 10:54:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:32,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:32,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:32,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:54:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:32,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:54:32,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:33,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:33,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043634427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:33,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:33,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 10:54:33,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997851495] [2022-11-20 10:54:33,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:33,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:54:33,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:54:33,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:54:33,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 10:54:33,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 208 transitions, 899 flow. Second operand has 16 states, 16 states have (on average 151.625) internal successors, (2426), 16 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) [2022-11-20 10:54:33,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:33,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 10:54:33,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:34,865 INFO L130 PetriNetUnfolder]: 219/2729 cut-off events. [2022-11-20 10:54:34,866 INFO L131 PetriNetUnfolder]: For 1905/1905 co-relation queries the response was YES. [2022-11-20 10:54:34,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4786 conditions, 2729 events. 219/2729 cut-off events. For 1905/1905 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 19059 event pairs, 55 based on Foata normal form. 37/2695 useless extension candidates. Maximal degree in co-relation 4306. Up to 126 conditions per place. [2022-11-20 10:54:34,945 INFO L137 encePairwiseOnDemand]: 171/184 looper letters, 90 selfloop transitions, 62 changer transitions 1/287 dead transitions. [2022-11-20 10:54:34,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 287 transitions, 1522 flow [2022-11-20 10:54:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:54:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 10:54:34,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3674 transitions. [2022-11-20 10:54:34,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8319746376811594 [2022-11-20 10:54:34,958 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3674 transitions. [2022-11-20 10:54:34,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3674 transitions. [2022-11-20 10:54:34,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:34,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3674 transitions. [2022-11-20 10:54:34,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 153.08333333333334) internal successors, (3674), 24 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:34,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 184.0) internal successors, (4600), 25 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:34,985 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 184.0) internal successors, (4600), 25 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:34,986 INFO L175 Difference]: Start difference. First operand has 221 places, 208 transitions, 899 flow. Second operand 24 states and 3674 transitions. [2022-11-20 10:54:34,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 287 transitions, 1522 flow [2022-11-20 10:54:34,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 287 transitions, 1512 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:54:35,003 INFO L231 Difference]: Finished difference. Result has 241 places, 223 transitions, 1148 flow [2022-11-20 10:54:35,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1148, PETRI_PLACES=241, PETRI_TRANSITIONS=223} [2022-11-20 10:54:35,006 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 72 predicate places. [2022-11-20 10:54:35,006 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 223 transitions, 1148 flow [2022-11-20 10:54:35,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 151.625) internal successors, (2426), 16 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) [2022-11-20 10:54:35,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:35,008 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:35,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:35,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 10:54:35,215 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:35,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1962636643, now seen corresponding path program 1 times [2022-11-20 10:54:35,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:35,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209664285] [2022-11-20 10:54:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:35,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:35,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209664285] [2022-11-20 10:54:35,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209664285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:35,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:35,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871665926] [2022-11-20 10:54:35,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:35,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:35,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:35,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:35,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 10:54:35,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 223 transitions, 1148 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:35,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:35,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 10:54:35,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:36,447 INFO L130 PetriNetUnfolder]: 216/2847 cut-off events. [2022-11-20 10:54:36,448 INFO L131 PetriNetUnfolder]: For 2468/2468 co-relation queries the response was YES. [2022-11-20 10:54:36,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5127 conditions, 2847 events. 216/2847 cut-off events. For 2468/2468 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 20320 event pairs, 45 based on Foata normal form. 24/2800 useless extension candidates. Maximal degree in co-relation 4665. Up to 297 conditions per place. [2022-11-20 10:54:36,480 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 49 selfloop transitions, 45 changer transitions 2/230 dead transitions. [2022-11-20 10:54:36,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 230 transitions, 1334 flow [2022-11-20 10:54:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:54:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:54:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1227 transitions. [2022-11-20 10:54:36,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335597826086957 [2022-11-20 10:54:36,484 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1227 transitions. [2022-11-20 10:54:36,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1227 transitions. [2022-11-20 10:54:36,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:36,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1227 transitions. [2022-11-20 10:54:36,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.375) internal successors, (1227), 8 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:36,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:36,494 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:36,494 INFO L175 Difference]: Start difference. First operand has 241 places, 223 transitions, 1148 flow. Second operand 8 states and 1227 transitions. [2022-11-20 10:54:36,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 230 transitions, 1334 flow [2022-11-20 10:54:36,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 230 transitions, 1281 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-20 10:54:36,514 INFO L231 Difference]: Finished difference. Result has 237 places, 216 transitions, 1165 flow [2022-11-20 10:54:36,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1165, PETRI_PLACES=237, PETRI_TRANSITIONS=216} [2022-11-20 10:54:36,517 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 68 predicate places. [2022-11-20 10:54:36,517 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 216 transitions, 1165 flow [2022-11-20 10:54:36,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:36,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:36,518 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:36,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:54:36,519 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:36,520 INFO L85 PathProgramCache]: Analyzing trace with hash 399186211, now seen corresponding path program 1 times [2022-11-20 10:54:36,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:36,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829646320] [2022-11-20 10:54:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:36,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 10:54:37,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:37,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829646320] [2022-11-20 10:54:37,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829646320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:37,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545647617] [2022-11-20 10:54:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:37,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:37,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:37,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:54:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:37,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:54:37,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:54:37,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:54:38,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545647617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:38,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:38,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-20 10:54:38,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21045294] [2022-11-20 10:54:38,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:38,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:54:38,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:38,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:54:38,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:54:38,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 10:54:38,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 216 transitions, 1165 flow. Second operand has 18 states, 18 states have (on average 152.22222222222223) internal successors, (2740), 18 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:38,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:38,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 10:54:38,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:40,776 INFO L130 PetriNetUnfolder]: 342/4677 cut-off events. [2022-11-20 10:54:40,776 INFO L131 PetriNetUnfolder]: For 4989/4989 co-relation queries the response was YES. [2022-11-20 10:54:40,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8607 conditions, 4677 events. 342/4677 cut-off events. For 4989/4989 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 36407 event pairs, 82 based on Foata normal form. 24/4580 useless extension candidates. Maximal degree in co-relation 8128. Up to 202 conditions per place. [2022-11-20 10:54:40,837 INFO L137 encePairwiseOnDemand]: 172/184 looper letters, 139 selfloop transitions, 91 changer transitions 5/369 dead transitions. [2022-11-20 10:54:40,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 369 transitions, 2643 flow [2022-11-20 10:54:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 10:54:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 10:54:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4303 transitions. [2022-11-20 10:54:40,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8352096273291926 [2022-11-20 10:54:40,846 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4303 transitions. [2022-11-20 10:54:40,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4303 transitions. [2022-11-20 10:54:40,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:40,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4303 transitions. [2022-11-20 10:54:40,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 153.67857142857142) internal successors, (4303), 28 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:40,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 184.0) internal successors, (5336), 29 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:40,985 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 184.0) internal successors, (5336), 29 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:40,986 INFO L175 Difference]: Start difference. First operand has 237 places, 216 transitions, 1165 flow. Second operand 28 states and 4303 transitions. [2022-11-20 10:54:40,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 369 transitions, 2643 flow [2022-11-20 10:54:41,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 369 transitions, 2547 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-20 10:54:41,031 INFO L231 Difference]: Finished difference. Result has 270 places, 267 transitions, 1995 flow [2022-11-20 10:54:41,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1995, PETRI_PLACES=270, PETRI_TRANSITIONS=267} [2022-11-20 10:54:41,032 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 101 predicate places. [2022-11-20 10:54:41,033 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 267 transitions, 1995 flow [2022-11-20 10:54:41,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 152.22222222222223) internal successors, (2740), 18 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:41,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:41,035 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:41,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:41,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 10:54:41,243 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:41,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1633801715, now seen corresponding path program 1 times [2022-11-20 10:54:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:41,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632670572] [2022-11-20 10:54:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:41,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 10:54:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:42,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632670572] [2022-11-20 10:54:42,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632670572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:42,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531608093] [2022-11-20 10:54:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:42,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:42,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:42,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:42,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:54:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:54:42,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 10:54:43,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 10:54:44,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531608093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:44,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:44,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-20 10:54:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44765811] [2022-11-20 10:54:44,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:44,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:54:44,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:44,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:54:44,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:54:44,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 10:54:44,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 267 transitions, 1995 flow. Second operand has 22 states, 22 states have (on average 152.63636363636363) internal successors, (3358), 22 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:44,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:44,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 10:54:44,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:47,344 INFO L130 PetriNetUnfolder]: 479/6351 cut-off events. [2022-11-20 10:54:47,344 INFO L131 PetriNetUnfolder]: For 10534/10534 co-relation queries the response was YES. [2022-11-20 10:54:47,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12271 conditions, 6351 events. 479/6351 cut-off events. For 10534/10534 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 52101 event pairs, 128 based on Foata normal form. 29/6207 useless extension candidates. Maximal degree in co-relation 11563. Up to 316 conditions per place. [2022-11-20 10:54:47,432 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 159 selfloop transitions, 178 changer transitions 2/473 dead transitions. [2022-11-20 10:54:47,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 473 transitions, 4288 flow [2022-11-20 10:54:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 10:54:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 10:54:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5366 transitions. [2022-11-20 10:54:47,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8332298136645963 [2022-11-20 10:54:47,447 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5366 transitions. [2022-11-20 10:54:47,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5366 transitions. [2022-11-20 10:54:47,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:47,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5366 transitions. [2022-11-20 10:54:47,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.31428571428572) internal successors, (5366), 35 states have internal predecessors, (5366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:47,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 184.0) internal successors, (6624), 36 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:47,485 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 184.0) internal successors, (6624), 36 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:47,486 INFO L175 Difference]: Start difference. First operand has 270 places, 267 transitions, 1995 flow. Second operand 35 states and 5366 transitions. [2022-11-20 10:54:47,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 473 transitions, 4288 flow [2022-11-20 10:54:47,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 473 transitions, 4183 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-20 10:54:47,560 INFO L231 Difference]: Finished difference. Result has 307 places, 349 transitions, 3447 flow [2022-11-20 10:54:47,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3447, PETRI_PLACES=307, PETRI_TRANSITIONS=349} [2022-11-20 10:54:47,561 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 138 predicate places. [2022-11-20 10:54:47,562 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 349 transitions, 3447 flow [2022-11-20 10:54:47,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 152.63636363636363) internal successors, (3358), 22 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:47,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:47,564 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-20 10:54:47,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 10:54:47,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:47,772 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash -534078514, now seen corresponding path program 2 times [2022-11-20 10:54:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:47,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095174501] [2022-11-20 10:54:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:48,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:48,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095174501] [2022-11-20 10:54:48,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095174501] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:48,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508205255] [2022-11-20 10:54:48,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:54:48,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:48,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:48,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:48,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:54:49,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:54:49,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:49,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:54:49,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:49,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:50,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508205255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:50,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:50,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 10:54:50,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704017973] [2022-11-20 10:54:50,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:50,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:54:50,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:50,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:54:50,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:54:50,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-20 10:54:50,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 349 transitions, 3447 flow. Second operand has 32 states, 32 states have (on average 157.71875) internal successors, (5047), 32 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:50,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:54:50,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-20 10:54:50,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:54:56,317 INFO L130 PetriNetUnfolder]: 564/9353 cut-off events. [2022-11-20 10:54:56,317 INFO L131 PetriNetUnfolder]: For 19347/19347 co-relation queries the response was YES. [2022-11-20 10:54:56,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18474 conditions, 9353 events. 564/9353 cut-off events. For 19347/19347 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 69481 event pairs, 180 based on Foata normal form. 55/9141 useless extension candidates. Maximal degree in co-relation 16781. Up to 622 conditions per place. [2022-11-20 10:54:56,432 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 295 selfloop transitions, 151 changer transitions 1/594 dead transitions. [2022-11-20 10:54:56,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 594 transitions, 6287 flow [2022-11-20 10:54:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 10:54:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-20 10:54:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 7505 transitions. [2022-11-20 10:54:56,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678307123034228 [2022-11-20 10:54:56,452 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 7505 transitions. [2022-11-20 10:54:56,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 7505 transitions. [2022-11-20 10:54:56,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:54:56,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 7505 transitions. [2022-11-20 10:54:56,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 159.68085106382978) internal successors, (7505), 47 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:56,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 184.0) internal successors, (8832), 48 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:56,498 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 184.0) internal successors, (8832), 48 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:56,498 INFO L175 Difference]: Start difference. First operand has 307 places, 349 transitions, 3447 flow. Second operand 47 states and 7505 transitions. [2022-11-20 10:54:56,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 594 transitions, 6287 flow [2022-11-20 10:54:56,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 594 transitions, 6099 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-11-20 10:54:56,620 INFO L231 Difference]: Finished difference. Result has 349 places, 414 transitions, 4748 flow [2022-11-20 10:54:56,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=3276, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=4748, PETRI_PLACES=349, PETRI_TRANSITIONS=414} [2022-11-20 10:54:56,622 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 180 predicate places. [2022-11-20 10:54:56,622 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 414 transitions, 4748 flow [2022-11-20 10:54:56,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 157.71875) internal successors, (5047), 32 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:56,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:54:56,624 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:56,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:56,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 10:54:56,839 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:54:56,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2137506421, now seen corresponding path program 2 times [2022-11-20 10:54:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:56,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8932973] [2022-11-20 10:54:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1167 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:54:58,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:58,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8932973] [2022-11-20 10:54:58,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8932973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:58,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432779060] [2022-11-20 10:54:58,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:54:58,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:58,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:58,380 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:58,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:54:58,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:54:58,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:58,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:54:58,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1135 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 10:54:59,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1135 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 10:55:00,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432779060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:00,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:00,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 33 [2022-11-20 10:55:00,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865581966] [2022-11-20 10:55:00,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:00,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 10:55:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:00,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 10:55:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:55:00,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 10:55:00,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 414 transitions, 4748 flow. Second operand has 34 states, 34 states have (on average 152.11764705882354) internal successors, (5172), 34 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:00,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 10:55:00,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:07,357 INFO L130 PetriNetUnfolder]: 918/12257 cut-off events. [2022-11-20 10:55:07,358 INFO L131 PetriNetUnfolder]: For 28502/28502 co-relation queries the response was YES. [2022-11-20 10:55:07,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25003 conditions, 12257 events. 918/12257 cut-off events. For 28502/28502 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 105265 event pairs, 301 based on Foata normal form. 24/11968 useless extension candidates. Maximal degree in co-relation 24099. Up to 600 conditions per place. [2022-11-20 10:55:07,501 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 322 selfloop transitions, 289 changer transitions 9/754 dead transitions. [2022-11-20 10:55:07,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 754 transitions, 8703 flow [2022-11-20 10:55:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-20 10:55:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-20 10:55:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 8613 transitions. [2022-11-20 10:55:07,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8358889751552795 [2022-11-20 10:55:07,515 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 8613 transitions. [2022-11-20 10:55:07,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 8613 transitions. [2022-11-20 10:55:07,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:07,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 8613 transitions. [2022-11-20 10:55:07,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 153.80357142857142) internal successors, (8613), 56 states have internal predecessors, (8613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:07,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 184.0) internal successors, (10488), 57 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:07,556 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 184.0) internal successors, (10488), 57 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:07,556 INFO L175 Difference]: Start difference. First operand has 349 places, 414 transitions, 4748 flow. Second operand 56 states and 8613 transitions. [2022-11-20 10:55:07,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 754 transitions, 8703 flow [2022-11-20 10:55:07,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 754 transitions, 8570 flow, removed 16 selfloop flow, removed 12 redundant places. [2022-11-20 10:55:07,937 INFO L231 Difference]: Finished difference. Result has 408 places, 505 transitions, 6957 flow [2022-11-20 10:55:07,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6957, PETRI_PLACES=408, PETRI_TRANSITIONS=505} [2022-11-20 10:55:07,940 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 239 predicate places. [2022-11-20 10:55:07,940 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 505 transitions, 6957 flow [2022-11-20 10:55:07,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 152.11764705882354) internal successors, (5172), 34 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:07,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:07,943 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:07,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:08,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:08,144 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:55:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1952320112, now seen corresponding path program 2 times [2022-11-20 10:55:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:08,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34349350] [2022-11-20 10:55:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:08,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:55:09,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:09,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34349350] [2022-11-20 10:55:09,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34349350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:09,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360843159] [2022-11-20 10:55:09,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:55:09,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:09,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:09,501 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:09,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:55:09,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:55:09,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:55:09,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:55:09,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:55:10,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:55:11,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360843159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:11,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:11,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-20 10:55:11,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154022817] [2022-11-20 10:55:11,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:11,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:55:11,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:11,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:55:11,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:55:11,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 10:55:11,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 505 transitions, 6957 flow. Second operand has 32 states, 32 states have (on average 152.4375) internal successors, (4878), 32 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:11,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:11,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 10:55:11,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:23,551 INFO L130 PetriNetUnfolder]: 1582/20010 cut-off events. [2022-11-20 10:55:23,552 INFO L131 PetriNetUnfolder]: For 59777/59777 co-relation queries the response was YES. [2022-11-20 10:55:23,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43108 conditions, 20010 events. 1582/20010 cut-off events. For 59777/59777 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 193681 event pairs, 493 based on Foata normal form. 27/19550 useless extension candidates. Maximal degree in co-relation 42135. Up to 1103 conditions per place. [2022-11-20 10:55:23,887 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 355 selfloop transitions, 592 changer transitions 7/1088 dead transitions. [2022-11-20 10:55:23,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1088 transitions, 16485 flow [2022-11-20 10:55:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 10:55:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-20 10:55:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 7840 transitions. [2022-11-20 10:55:23,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835464620630861 [2022-11-20 10:55:23,907 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 7840 transitions. [2022-11-20 10:55:23,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 7840 transitions. [2022-11-20 10:55:23,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:23,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 7840 transitions. [2022-11-20 10:55:23,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 153.72549019607843) internal successors, (7840), 51 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:23,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 184.0) internal successors, (9568), 52 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:23,954 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 184.0) internal successors, (9568), 52 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:23,954 INFO L175 Difference]: Start difference. First operand has 408 places, 505 transitions, 6957 flow. Second operand 51 states and 7840 transitions. [2022-11-20 10:55:23,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1088 transitions, 16485 flow [2022-11-20 10:55:24,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1088 transitions, 16289 flow, removed 50 selfloop flow, removed 15 redundant places. [2022-11-20 10:55:24,500 INFO L231 Difference]: Finished difference. Result has 458 places, 844 transitions, 14487 flow [2022-11-20 10:55:24,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6798, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=14487, PETRI_PLACES=458, PETRI_TRANSITIONS=844} [2022-11-20 10:55:24,502 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 289 predicate places. [2022-11-20 10:55:24,502 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 844 transitions, 14487 flow [2022-11-20 10:55:24,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 152.4375) internal successors, (4878), 32 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:24,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:24,504 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:24,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:24,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:24,712 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:55:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:24,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1831857863, now seen corresponding path program 3 times [2022-11-20 10:55:24,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:24,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752261391] [2022-11-20 10:55:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:24,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:55:26,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:26,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752261391] [2022-11-20 10:55:26,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752261391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:26,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584170621] [2022-11-20 10:55:26,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:55:26,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:26,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:26,831 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:26,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:55:28,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 10:55:28,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:55:28,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 10:55:28,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:55:29,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:55:30,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584170621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:30,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:30,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-11-20 10:55:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044469657] [2022-11-20 10:55:30,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:30,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 10:55:30,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:30,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 10:55:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 10:55:30,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 10:55:30,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 844 transitions, 14487 flow. Second operand has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:55:30,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 10:55:30,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:55:54,042 INFO L130 PetriNetUnfolder]: 2611/32231 cut-off events. [2022-11-20 10:55:54,042 INFO L131 PetriNetUnfolder]: For 129517/129517 co-relation queries the response was YES. [2022-11-20 10:55:54,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73065 conditions, 32231 events. 2611/32231 cut-off events. For 129517/129517 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 349315 event pairs, 867 based on Foata normal form. 109/31565 useless extension candidates. Maximal degree in co-relation 71179. Up to 1909 conditions per place. [2022-11-20 10:55:54,924 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 479 selfloop transitions, 1126 changer transitions 12/1751 dead transitions. [2022-11-20 10:55:54,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1751 transitions, 31287 flow [2022-11-20 10:55:54,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-20 10:55:54,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-11-20 10:55:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 11377 transitions. [2022-11-20 10:55:54,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8355611045828437 [2022-11-20 10:55:54,953 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 11377 transitions. [2022-11-20 10:55:54,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 11377 transitions. [2022-11-20 10:55:54,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:55:54,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 11377 transitions. [2022-11-20 10:55:54,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 153.74324324324326) internal successors, (11377), 74 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:54,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 184.0) internal successors, (13800), 75 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:54,993 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 184.0) internal successors, (13800), 75 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:54,994 INFO L175 Difference]: Start difference. First operand has 458 places, 844 transitions, 14487 flow. Second operand 74 states and 11377 transitions. [2022-11-20 10:55:54,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1751 transitions, 31287 flow [2022-11-20 10:55:55,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1751 transitions, 30167 flow, removed 477 selfloop flow, removed 15 redundant places. [2022-11-20 10:55:55,785 INFO L231 Difference]: Finished difference. Result has 536 places, 1389 transitions, 27246 flow [2022-11-20 10:55:55,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=13494, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=644, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=27246, PETRI_PLACES=536, PETRI_TRANSITIONS=1389} [2022-11-20 10:55:55,786 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 367 predicate places. [2022-11-20 10:55:55,786 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 1389 transitions, 27246 flow [2022-11-20 10:55:55,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:55,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:55:55,787 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:55,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 10:55:55,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:55,988 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 10:55:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash -735898625, now seen corresponding path program 4 times [2022-11-20 10:55:55,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:55,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870412259] [2022-11-20 10:55:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:55,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:55:57,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:57,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870412259] [2022-11-20 10:55:57,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870412259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:57,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979569471] [2022-11-20 10:55:57,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:55:57,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:57,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:57,825 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:57,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a79d5369-7029-499d-ba74-f47e950570e6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 10:55:59,259 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:55:59,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:55:59,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 10:55:59,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:56:00,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:56:01,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979569471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:01,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:56:01,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-11-20 10:56:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577342802] [2022-11-20 10:56:01,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:01,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 10:56:01,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 10:56:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 10:56:01,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-20 10:56:01,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1389 transitions, 27246 flow. Second operand has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:01,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:01,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-20 10:56:01,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand