./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-11.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 5b16c68af06359cf155927d2335a825cd179e6a83a999e1ead7a6952268e92c6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:59:44,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:59:44,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:59:44,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:59:44,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:59:44,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:59:44,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:59:44,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:59:44,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:59:44,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:59:44,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:59:44,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:59:44,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:59:44,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:59:44,684 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:59:44,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:59:44,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:59:44,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:59:44,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:59:44,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:59:44,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:59:44,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:59:44,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:59:44,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:59:44,685 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:59:44,685 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:59:44,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:59:44,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:59:44,686 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:59:44,686 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:59:44,687 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:59:44,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:59:44,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:59:44,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:59:44,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:44,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:59:44,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:59:44,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:59:44,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:59:44,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:44,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:59:44,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:59:44,689 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:59:44,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:59:44,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:59:44,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:59:44,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:59:44,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:59:44,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:59:44,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:59:44,690 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 5b16c68af06359cf155927d2335a825cd179e6a83a999e1ead7a6952268e92c6 [2024-11-28 02:59:45,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:59:45,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:59:45,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:59:45,036 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:59:45,036 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:59:45,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/fib_unsafe-11.i [2024-11-28 02:59:48,445 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/data/9894cf925/4838ca50b3e1401fa7bba73b8c7a8222/FLAG4e8f06194 [2024-11-28 02:59:48,949 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:59:48,953 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/sv-benchmarks/c/pthread/fib_unsafe-11.i [2024-11-28 02:59:48,979 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/data/9894cf925/4838ca50b3e1401fa7bba73b8c7a8222/FLAG4e8f06194 [2024-11-28 02:59:49,005 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/data/9894cf925/4838ca50b3e1401fa7bba73b8c7a8222 [2024-11-28 02:59:49,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:59:49,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:59:49,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:59:49,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:59:49,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:59:49,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed38602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49, skipping insertion in model container [2024-11-28 02:59:49,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,074 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:59:49,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:59:49,572 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:59:49,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:59:49,699 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:59:49,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49 WrapperNode [2024-11-28 02:59:49,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:59:49,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:59:49,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:59:49,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:59:49,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,760 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-28 02:59:49,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:59:49,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:59:49,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:59:49,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:59:49,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,790 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:59:49,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,796 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:59:49,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:59:49,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:59:49,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:59:49,813 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (1/1) ... [2024-11-28 02:59:49,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:59:49,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:49,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:59:49,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:59:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 02:59:49,905 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 02:59:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 02:59:49,905 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 02:59:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 02:59:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:59:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:59:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 02:59:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:59:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:59:49,909 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:59:50,072 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:59:50,076 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:59:50,446 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:59:50,447 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:59:50,611 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:59:50,612 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 02:59:50,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:50 BoogieIcfgContainer [2024-11-28 02:59:50,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:59:50,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:59:50,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:59:50,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:59:50,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:59:49" (1/3) ... [2024-11-28 02:59:50,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7ff551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:50, skipping insertion in model container [2024-11-28 02:59:50,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:49" (2/3) ... [2024-11-28 02:59:50,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7ff551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:50, skipping insertion in model container [2024-11-28 02:59:50,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:50" (3/3) ... [2024-11-28 02:59:50,628 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-11.i [2024-11-28 02:59:50,650 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:59:50,653 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-11.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2024-11-28 02:59:50,653 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:59:50,738 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:59:50,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2024-11-28 02:59:50,850 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-11-28 02:59:50,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:59:50,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 106 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-28 02:59:50,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2024-11-28 02:59:50,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2024-11-28 02:59:50,871 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:59:50,895 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1f714cd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:59:50,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-28 02:59:50,909 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:59:50,909 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-11-28 02:59:50,909 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:59:50,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:50,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:50,912 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:50,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash 909223006, now seen corresponding path program 1 times [2024-11-28 02:59:50,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:50,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310403176] [2024-11-28 02:59:50,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:50,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:51,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:51,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310403176] [2024-11-28 02:59:51,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310403176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:51,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:51,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:51,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708928612] [2024-11-28 02:59:51,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:51,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:51,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:51,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:51,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:59:51,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 02:59:51,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:51,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:51,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 02:59:51,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:52,035 INFO L124 PetriNetUnfolderBase]: 657/1292 cut-off events. [2024-11-28 02:59:52,035 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 02:59:52,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1292 events. 657/1292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8013 event pairs, 156 based on Foata normal form. 0/989 useless extension candidates. Maximal degree in co-relation 2295. Up to 514 conditions per place. [2024-11-28 02:59:52,061 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-11-28 02:59:52,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2024-11-28 02:59:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:59:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:59:52,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-28 02:59:52,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-28 02:59:52,085 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2024-11-28 02:59:52,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2024-11-28 02:59:52,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:52,101 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-11-28 02:59:52,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-28 02:59:52,113 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-28 02:59:52,114 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-11-28 02:59:52,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:52,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:52,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:52,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:59:52,115 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:52,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:52,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1884958881, now seen corresponding path program 1 times [2024-11-28 02:59:52,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:52,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652238990] [2024-11-28 02:59:52,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:52,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:52,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:52,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652238990] [2024-11-28 02:59:52,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652238990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:52,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:52,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:52,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806326037] [2024-11-28 02:59:52,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:52,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:52,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:52,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:52,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:59:52,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 02:59:52,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:52,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:52,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 02:59:52,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:52,904 INFO L124 PetriNetUnfolderBase]: 885/1603 cut-off events. [2024-11-28 02:59:52,905 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-11-28 02:59:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3411 conditions, 1603 events. 885/1603 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9945 event pairs, 213 based on Foata normal form. 74/1373 useless extension candidates. Maximal degree in co-relation 3395. Up to 785 conditions per place. [2024-11-28 02:59:52,925 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-11-28 02:59:52,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 75 transitions, 315 flow [2024-11-28 02:59:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:59:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:59:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-28 02:59:52,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-11-28 02:59:52,930 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 4 states and 135 transitions. [2024-11-28 02:59:52,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 75 transitions, 315 flow [2024-11-28 02:59:52,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:59:52,941 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2024-11-28 02:59:52,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-11-28 02:59:52,943 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-11-28 02:59:52,943 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2024-11-28 02:59:52,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:52,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:52,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:52,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:59:52,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:52,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1859744604, now seen corresponding path program 1 times [2024-11-28 02:59:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:52,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246940653] [2024-11-28 02:59:52,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:53,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:53,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246940653] [2024-11-28 02:59:53,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246940653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:53,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:53,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:59:53,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834637587] [2024-11-28 02:59:53,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:53,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:59:53,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:53,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:59:53,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:59:53,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-28 02:59:53,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:53,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:53,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-28 02:59:53,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:53,586 INFO L124 PetriNetUnfolderBase]: 1133/2347 cut-off events. [2024-11-28 02:59:53,586 INFO L125 PetriNetUnfolderBase]: For 492/649 co-relation queries the response was YES. [2024-11-28 02:59:53,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4980 conditions, 2347 events. 1133/2347 cut-off events. For 492/649 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17378 event pairs, 365 based on Foata normal form. 106/2046 useless extension candidates. Maximal degree in co-relation 4960. Up to 993 conditions per place. [2024-11-28 02:59:53,615 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-28 02:59:53,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 300 flow [2024-11-28 02:59:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:59:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:59:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-28 02:59:53,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-28 02:59:53,620 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 3 states and 102 transitions. [2024-11-28 02:59:53,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 300 flow [2024-11-28 02:59:53,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:53,626 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2024-11-28 02:59:53,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-11-28 02:59:53,627 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-11-28 02:59:53,628 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2024-11-28 02:59:53,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:53,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:53,629 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:53,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:59:53,629 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:53,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:53,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1817508161, now seen corresponding path program 1 times [2024-11-28 02:59:53,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:53,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132952000] [2024-11-28 02:59:53,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:53,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:53,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:53,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132952000] [2024-11-28 02:59:53,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132952000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:53,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:53,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:59:53,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447397049] [2024-11-28 02:59:53,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:53,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:59:53,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:53,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:59:53,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:59:53,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-28 02:59:53,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:53,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:53,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-28 02:59:53,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:54,273 INFO L124 PetriNetUnfolderBase]: 1133/2310 cut-off events. [2024-11-28 02:59:54,273 INFO L125 PetriNetUnfolderBase]: For 616/773 co-relation queries the response was YES. [2024-11-28 02:59:54,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 2310 events. 1133/2310 cut-off events. For 616/773 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16829 event pairs, 365 based on Foata normal form. 92/1995 useless extension candidates. Maximal degree in co-relation 5115. Up to 993 conditions per place. [2024-11-28 02:59:54,301 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-28 02:59:54,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 307 flow [2024-11-28 02:59:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:59:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:59:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-28 02:59:54,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-28 02:59:54,307 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-11-28 02:59:54,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 307 flow [2024-11-28 02:59:54,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:54,314 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2024-11-28 02:59:54,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-11-28 02:59:54,316 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-28 02:59:54,317 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2024-11-28 02:59:54,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:54,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:54,318 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:54,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:59:54,320 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:54,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:54,320 INFO L85 PathProgramCache]: Analyzing trace with hash 524565913, now seen corresponding path program 1 times [2024-11-28 02:59:54,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:54,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440895288] [2024-11-28 02:59:54,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:54,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:54,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440895288] [2024-11-28 02:59:54,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440895288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:54,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:54,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:54,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118096833] [2024-11-28 02:59:54,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:54,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:54,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:54,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:54,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:59:54,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 02:59:54,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:54,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:54,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 02:59:54,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:55,114 INFO L124 PetriNetUnfolderBase]: 2065/3705 cut-off events. [2024-11-28 02:59:55,115 INFO L125 PetriNetUnfolderBase]: For 1351/1765 co-relation queries the response was YES. [2024-11-28 02:59:55,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8799 conditions, 3705 events. 2065/3705 cut-off events. For 1351/1765 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26275 event pairs, 457 based on Foata normal form. 255/3366 useless extension candidates. Maximal degree in co-relation 8775. Up to 2001 conditions per place. [2024-11-28 02:59:55,150 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-28 02:59:55,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2024-11-28 02:59:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:59:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:59:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-28 02:59:55,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2024-11-28 02:59:55,152 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2024-11-28 02:59:55,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2024-11-28 02:59:55,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:55,159 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2024-11-28 02:59:55,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-11-28 02:59:55,160 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-11-28 02:59:55,162 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2024-11-28 02:59:55,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:55,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:55,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:55,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:59:55,163 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:55,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash 508178424, now seen corresponding path program 1 times [2024-11-28 02:59:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276145573] [2024-11-28 02:59:55,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:55,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:55,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276145573] [2024-11-28 02:59:55,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276145573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:55,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:55,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:55,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335695234] [2024-11-28 02:59:55,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:55,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:55,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:55,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:55,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:59:55,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 02:59:55,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:55,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:55,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 02:59:55,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:55,834 INFO L124 PetriNetUnfolderBase]: 1601/3211 cut-off events. [2024-11-28 02:59:55,834 INFO L125 PetriNetUnfolderBase]: For 1181/1660 co-relation queries the response was YES. [2024-11-28 02:59:55,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7718 conditions, 3211 events. 1601/3211 cut-off events. For 1181/1660 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24158 event pairs, 227 based on Foata normal form. 337/2957 useless extension candidates. Maximal degree in co-relation 7692. Up to 1673 conditions per place. [2024-11-28 02:59:55,865 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-11-28 02:59:55,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2024-11-28 02:59:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:59:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:59:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-28 02:59:55,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2024-11-28 02:59:55,867 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2024-11-28 02:59:55,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2024-11-28 02:59:55,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:59:55,871 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2024-11-28 02:59:55,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-11-28 02:59:55,872 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-28 02:59:55,872 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2024-11-28 02:59:55,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:55,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:55,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:55,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:59:55,873 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:55,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1918001418, now seen corresponding path program 1 times [2024-11-28 02:59:55,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:55,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174839512] [2024-11-28 02:59:55,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:55,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:56,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:56,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174839512] [2024-11-28 02:59:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174839512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:56,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:56,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570543305] [2024-11-28 02:59:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:56,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:56,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:56,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:56,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:56,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 02:59:56,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:56,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:56,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 02:59:56,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:56,431 INFO L124 PetriNetUnfolderBase]: 1121/2194 cut-off events. [2024-11-28 02:59:56,431 INFO L125 PetriNetUnfolderBase]: For 1435/1771 co-relation queries the response was YES. [2024-11-28 02:59:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 2194 events. 1121/2194 cut-off events. For 1435/1771 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14688 event pairs, 160 based on Foata normal form. 49/1932 useless extension candidates. Maximal degree in co-relation 5985. Up to 835 conditions per place. [2024-11-28 02:59:56,454 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-28 02:59:56,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2024-11-28 02:59:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-28 02:59:56,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-11-28 02:59:56,456 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2024-11-28 02:59:56,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2024-11-28 02:59:56,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:56,461 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2024-11-28 02:59:56,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-11-28 02:59:56,462 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-11-28 02:59:56,462 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2024-11-28 02:59:56,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:56,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:56,462 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:56,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:59:56,465 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:56,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1478940209, now seen corresponding path program 1 times [2024-11-28 02:59:56,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:56,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986609748] [2024-11-28 02:59:56,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:56,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:56,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:56,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986609748] [2024-11-28 02:59:56,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986609748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:56,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:56,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519726580] [2024-11-28 02:59:56,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:56,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:56,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:56,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:56,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:56,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 02:59:56,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:56,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:56,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 02:59:56,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:57,024 INFO L124 PetriNetUnfolderBase]: 1167/2323 cut-off events. [2024-11-28 02:59:57,024 INFO L125 PetriNetUnfolderBase]: For 1787/2055 co-relation queries the response was YES. [2024-11-28 02:59:57,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 2323 events. 1167/2323 cut-off events. For 1787/2055 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15958 event pairs, 223 based on Foata normal form. 79/2245 useless extension candidates. Maximal degree in co-relation 6595. Up to 1105 conditions per place. [2024-11-28 02:59:57,045 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-28 02:59:57,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2024-11-28 02:59:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-28 02:59:57,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2024-11-28 02:59:57,047 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2024-11-28 02:59:57,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2024-11-28 02:59:57,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:59:57,057 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2024-11-28 02:59:57,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-11-28 02:59:57,058 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-28 02:59:57,058 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2024-11-28 02:59:57,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:57,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:57,058 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:57,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:59:57,058 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:57,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1334785602, now seen corresponding path program 1 times [2024-11-28 02:59:57,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:57,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848292301] [2024-11-28 02:59:57,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:57,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:57,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:57,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848292301] [2024-11-28 02:59:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848292301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:57,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:57,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758810892] [2024-11-28 02:59:57,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:57,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:57,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:57,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:57,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 02:59:57,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:57,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:57,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 02:59:57,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:57,601 INFO L124 PetriNetUnfolderBase]: 1041/2085 cut-off events. [2024-11-28 02:59:57,601 INFO L125 PetriNetUnfolderBase]: For 2141/2382 co-relation queries the response was YES. [2024-11-28 02:59:57,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6217 conditions, 2085 events. 1041/2085 cut-off events. For 2141/2382 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14132 event pairs, 265 based on Foata normal form. 77/2033 useless extension candidates. Maximal degree in co-relation 6183. Up to 1215 conditions per place. [2024-11-28 02:59:57,615 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 53 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-11-28 02:59:57,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 454 flow [2024-11-28 02:59:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-28 02:59:57,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-11-28 02:59:57,617 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 148 transitions. [2024-11-28 02:59:57,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 454 flow [2024-11-28 02:59:57,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 439 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-28 02:59:57,625 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2024-11-28 02:59:57,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-11-28 02:59:57,627 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-11-28 02:59:57,627 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2024-11-28 02:59:57,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:57,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:57,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:57,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:59:57,628 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:57,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:57,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1334785601, now seen corresponding path program 1 times [2024-11-28 02:59:57,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:57,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901118834] [2024-11-28 02:59:57,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:57,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:57,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:57,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901118834] [2024-11-28 02:59:57,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901118834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:57,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:57,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:59:57,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357369389] [2024-11-28 02:59:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:57,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:59:57,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:57,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:59:57,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:57,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 02:59:57,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:57,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:57,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 02:59:57,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:58,133 INFO L124 PetriNetUnfolderBase]: 1083/2162 cut-off events. [2024-11-28 02:59:58,133 INFO L125 PetriNetUnfolderBase]: For 2515/2765 co-relation queries the response was YES. [2024-11-28 02:59:58,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6506 conditions, 2162 events. 1083/2162 cut-off events. For 2515/2765 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14627 event pairs, 258 based on Foata normal form. 77/2159 useless extension candidates. Maximal degree in co-relation 6471. Up to 1229 conditions per place. [2024-11-28 02:59:58,154 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-11-28 02:59:58,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 524 flow [2024-11-28 02:59:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:59:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:59:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-11-28 02:59:58,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7181818181818181 [2024-11-28 02:59:58,155 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 158 transitions. [2024-11-28 02:59:58,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 524 flow [2024-11-28 02:59:58,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:59:58,161 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2024-11-28 02:59:58,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-11-28 02:59:58,162 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-11-28 02:59:58,163 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2024-11-28 02:59:58,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:58,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:58,163 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:58,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:59:58,164 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:58,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash -978726487, now seen corresponding path program 1 times [2024-11-28 02:59:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:58,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131781272] [2024-11-28 02:59:58,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:58,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131781272] [2024-11-28 02:59:58,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131781272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:58,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082913777] [2024-11-28 02:59:58,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:58,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:58,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:58,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:58,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:59:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:58,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:59:58,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:58,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082913777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:58,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:58,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 02:59:58,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927599083] [2024-11-28 02:59:58,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:58,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:59:58,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:58,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:59:58,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:59:58,485 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 02:59:58,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:58,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:58,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 02:59:58,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:59:59,059 INFO L124 PetriNetUnfolderBase]: 1453/2648 cut-off events. [2024-11-28 02:59:59,060 INFO L125 PetriNetUnfolderBase]: For 4238/4654 co-relation queries the response was YES. [2024-11-28 02:59:59,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8412 conditions, 2648 events. 1453/2648 cut-off events. For 4238/4654 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17594 event pairs, 311 based on Foata normal form. 134/2677 useless extension candidates. Maximal degree in co-relation 8379. Up to 1048 conditions per place. [2024-11-28 02:59:59,086 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-11-28 02:59:59,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 683 flow [2024-11-28 02:59:59,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:59:59,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:59:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-28 02:59:59,089 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-28 02:59:59,089 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 6 states and 182 transitions. [2024-11-28 02:59:59,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 683 flow [2024-11-28 02:59:59,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 672 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 02:59:59,099 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 260 flow [2024-11-28 02:59:59,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-11-28 02:59:59,100 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-28 02:59:59,100 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 260 flow [2024-11-28 02:59:59,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:59,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:59:59,100 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:59:59,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:59:59,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:59,301 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:59:59,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:59,301 INFO L85 PathProgramCache]: Analyzing trace with hash -615979462, now seen corresponding path program 1 times [2024-11-28 02:59:59,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:59,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544996705] [2024-11-28 02:59:59,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:59,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:59,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544996705] [2024-11-28 02:59:59,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544996705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:59,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334489912] [2024-11-28 02:59:59,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:59,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:59,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:59,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:59,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:59:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:59,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:59:59,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:59:59,666 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:59,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334489912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:59,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:59,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-28 02:59:59,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459379690] [2024-11-28 02:59:59,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:59,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:59,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:59,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:59,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:59:59,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-28 02:59:59,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:59,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:59:59,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-28 02:59:59,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:00,047 INFO L124 PetriNetUnfolderBase]: 1083/2400 cut-off events. [2024-11-28 03:00:00,047 INFO L125 PetriNetUnfolderBase]: For 3857/4036 co-relation queries the response was YES. [2024-11-28 03:00:00,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7017 conditions, 2400 events. 1083/2400 cut-off events. For 3857/4036 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17819 event pairs, 187 based on Foata normal form. 119/2436 useless extension candidates. Maximal degree in co-relation 6984. Up to 1216 conditions per place. [2024-11-28 03:00:00,068 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-11-28 03:00:00,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 499 flow [2024-11-28 03:00:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:00:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-28 03:00:00,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-28 03:00:00,070 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 260 flow. Second operand 4 states and 120 transitions. [2024-11-28 03:00:00,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 499 flow [2024-11-28 03:00:00,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 493 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:00:00,077 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 255 flow [2024-11-28 03:00:00,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-11-28 03:00:00,078 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-11-28 03:00:00,079 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 255 flow [2024-11-28 03:00:00,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:00,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:00,079 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:00,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:00:00,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:00,280 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:00,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash -275749701, now seen corresponding path program 1 times [2024-11-28 03:00:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427549534] [2024-11-28 03:00:00,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:00:00,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:00,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427549534] [2024-11-28 03:00:00,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427549534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:00,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:00,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:00:00,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690700553] [2024-11-28 03:00:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:00,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:00,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:00,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:00,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:00:00,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-28 03:00:00,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:00,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:00,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-28 03:00:00,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:00,788 INFO L124 PetriNetUnfolderBase]: 1611/2958 cut-off events. [2024-11-28 03:00:00,788 INFO L125 PetriNetUnfolderBase]: For 4733/5006 co-relation queries the response was YES. [2024-11-28 03:00:00,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 2958 events. 1611/2958 cut-off events. For 4733/5006 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19787 event pairs, 774 based on Foata normal form. 127/3016 useless extension candidates. Maximal degree in co-relation 9358. Up to 1547 conditions per place. [2024-11-28 03:00:00,815 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 68 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-11-28 03:00:00,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 577 flow [2024-11-28 03:00:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:00:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-28 03:00:00,817 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-11-28 03:00:00,817 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 255 flow. Second operand 4 states and 124 transitions. [2024-11-28 03:00:00,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 577 flow [2024-11-28 03:00:00,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 568 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 03:00:00,830 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 264 flow [2024-11-28 03:00:00,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-11-28 03:00:00,831 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-11-28 03:00:00,832 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 264 flow [2024-11-28 03:00:00,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:00,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:00,832 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:00,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:00:00,832 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:00,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1915493853, now seen corresponding path program 1 times [2024-11-28 03:00:00,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:00,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618359566] [2024-11-28 03:00:00,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:00,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:00,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:00,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618359566] [2024-11-28 03:00:00,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618359566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:00,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221268751] [2024-11-28 03:00:00,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:00,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:00,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:00,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:00,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:00:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:01,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:00:01,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:01,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:01,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221268751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:01,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:01,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-28 03:00:01,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028338954] [2024-11-28 03:00:01,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:01,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:00:01,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:01,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:00:01,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:01,290 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 03:00:01,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:01,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:01,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 03:00:01,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:02,176 INFO L124 PetriNetUnfolderBase]: 2907/6187 cut-off events. [2024-11-28 03:00:02,176 INFO L125 PetriNetUnfolderBase]: For 11200/11652 co-relation queries the response was YES. [2024-11-28 03:00:02,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17977 conditions, 6187 events. 2907/6187 cut-off events. For 11200/11652 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 50750 event pairs, 187 based on Foata normal form. 370/6492 useless extension candidates. Maximal degree in co-relation 17944. Up to 1217 conditions per place. [2024-11-28 03:00:02,316 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-11-28 03:00:02,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 153 transitions, 1102 flow [2024-11-28 03:00:02,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:00:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:00:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-11-28 03:00:02,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2024-11-28 03:00:02,318 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 264 flow. Second operand 6 states and 207 transitions. [2024-11-28 03:00:02,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 153 transitions, 1102 flow [2024-11-28 03:00:02,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 153 transitions, 1086 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:00:02,328 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 292 flow [2024-11-28 03:00:02,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-11-28 03:00:02,329 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-11-28 03:00:02,329 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 292 flow [2024-11-28 03:00:02,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:02,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:02,332 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:02,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:00:02,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:02,533 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:02,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:02,534 INFO L85 PathProgramCache]: Analyzing trace with hash -84325124, now seen corresponding path program 1 times [2024-11-28 03:00:02,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:02,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395976500] [2024-11-28 03:00:02,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:02,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:02,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395976500] [2024-11-28 03:00:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395976500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854654887] [2024-11-28 03:00:02,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:02,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:02,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:02,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:02,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:00:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:02,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:00:02,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:02,782 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:02,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854654887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:02,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:02,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 03:00:02,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928936052] [2024-11-28 03:00:02,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:02,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:00:02,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:02,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:00:02,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:02,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 03:00:02,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:02,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:02,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 03:00:02,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:03,862 INFO L124 PetriNetUnfolderBase]: 3691/6634 cut-off events. [2024-11-28 03:00:03,863 INFO L125 PetriNetUnfolderBase]: For 13310/13724 co-relation queries the response was YES. [2024-11-28 03:00:03,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21777 conditions, 6634 events. 3691/6634 cut-off events. For 13310/13724 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 48496 event pairs, 815 based on Foata normal form. 162/6562 useless extension candidates. Maximal degree in co-relation 21740. Up to 2628 conditions per place. [2024-11-28 03:00:03,936 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-11-28 03:00:03,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 797 flow [2024-11-28 03:00:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:00:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:00:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-11-28 03:00:03,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 03:00:03,938 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 292 flow. Second operand 6 states and 176 transitions. [2024-11-28 03:00:03,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 797 flow [2024-11-28 03:00:03,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 755 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-28 03:00:03,958 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2024-11-28 03:00:03,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-11-28 03:00:03,959 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-28 03:00:03,959 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2024-11-28 03:00:03,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:03,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:03,959 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:03,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:00:04,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:04,161 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:04,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash 749232982, now seen corresponding path program 1 times [2024-11-28 03:00:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:04,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336040222] [2024-11-28 03:00:04,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:04,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:04,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:04,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336040222] [2024-11-28 03:00:04,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336040222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:04,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405443777] [2024-11-28 03:00:04,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:04,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:04,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:04,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:04,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:00:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:04,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:00:04,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:04,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405443777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-28 03:00:04,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105641454] [2024-11-28 03:00:04,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:04,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:00:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:04,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:00:04,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:00:04,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 03:00:04,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:04,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:04,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 03:00:04,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:05,303 INFO L124 PetriNetUnfolderBase]: 3819/6572 cut-off events. [2024-11-28 03:00:05,303 INFO L125 PetriNetUnfolderBase]: For 13810/14017 co-relation queries the response was YES. [2024-11-28 03:00:05,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22085 conditions, 6572 events. 3819/6572 cut-off events. For 13810/14017 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 45194 event pairs, 1663 based on Foata normal form. 228/6431 useless extension candidates. Maximal degree in co-relation 22048. Up to 3155 conditions per place. [2024-11-28 03:00:05,337 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-11-28 03:00:05,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 539 flow [2024-11-28 03:00:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:00:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-28 03:00:05,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2024-11-28 03:00:05,339 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 4 states and 113 transitions. [2024-11-28 03:00:05,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 539 flow [2024-11-28 03:00:05,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:00:05,360 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 293 flow [2024-11-28 03:00:05,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2024-11-28 03:00:05,361 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2024-11-28 03:00:05,361 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 293 flow [2024-11-28 03:00:05,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:05,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:05,362 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:05,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:00:05,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:00:05,563 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:05,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1844784054, now seen corresponding path program 1 times [2024-11-28 03:00:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:05,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40941887] [2024-11-28 03:00:05,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:05,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40941887] [2024-11-28 03:00:05,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40941887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:05,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867961859] [2024-11-28 03:00:05,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:05,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:05,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:05,687 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:05,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:00:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:05,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:00:05,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:05,897 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:05,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867961859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:05,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:05,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-28 03:00:05,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341590045] [2024-11-28 03:00:05,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:05,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:00:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:05,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:00:05,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:00:05,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 03:00:05,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:05,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:05,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 03:00:05,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:06,760 INFO L124 PetriNetUnfolderBase]: 3259/6208 cut-off events. [2024-11-28 03:00:06,760 INFO L125 PetriNetUnfolderBase]: For 14520/14830 co-relation queries the response was YES. [2024-11-28 03:00:06,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21119 conditions, 6208 events. 3259/6208 cut-off events. For 14520/14830 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 46260 event pairs, 737 based on Foata normal form. 360/6483 useless extension candidates. Maximal degree in co-relation 21080. Up to 2388 conditions per place. [2024-11-28 03:00:06,797 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 67 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2024-11-28 03:00:06,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 92 transitions, 659 flow [2024-11-28 03:00:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:00:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 03:00:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-11-28 03:00:06,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2024-11-28 03:00:06,799 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 293 flow. Second operand 6 states and 173 transitions. [2024-11-28 03:00:06,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 92 transitions, 659 flow [2024-11-28 03:00:06,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 612 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:00:06,821 INFO L231 Difference]: Finished difference. Result has 81 places, 55 transitions, 305 flow [2024-11-28 03:00:06,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2024-11-28 03:00:06,822 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-28 03:00:06,823 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 305 flow [2024-11-28 03:00:06,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:06,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:06,823 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:06,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:00:07,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:00:07,025 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:07,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash 397023509, now seen corresponding path program 1 times [2024-11-28 03:00:07,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:07,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198194488] [2024-11-28 03:00:07,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:07,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198194488] [2024-11-28 03:00:07,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198194488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524583910] [2024-11-28 03:00:07,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:07,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:07,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:07,158 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:07,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:00:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:07,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:00:07,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:07,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:07,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524583910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:07,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:07,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-28 03:00:07,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564210645] [2024-11-28 03:00:07,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:07,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:00:07,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:07,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:00:07,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:00:07,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 03:00:07,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 55 transitions, 305 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:07,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:07,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 03:00:07,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:11,081 INFO L124 PetriNetUnfolderBase]: 9393/18778 cut-off events. [2024-11-28 03:00:11,082 INFO L125 PetriNetUnfolderBase]: For 50201/51140 co-relation queries the response was YES. [2024-11-28 03:00:11,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63381 conditions, 18778 events. 9393/18778 cut-off events. For 50201/51140 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 170182 event pairs, 503 based on Foata normal form. 1298/19983 useless extension candidates. Maximal degree in co-relation 63340. Up to 3943 conditions per place. [2024-11-28 03:00:11,194 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 327 selfloop transitions, 47 changer transitions 0/390 dead transitions. [2024-11-28 03:00:11,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 390 transitions, 2826 flow [2024-11-28 03:00:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:00:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 03:00:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 751 transitions. [2024-11-28 03:00:11,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7111742424242424 [2024-11-28 03:00:11,197 INFO L175 Difference]: Start difference. First operand has 81 places, 55 transitions, 305 flow. Second operand 24 states and 751 transitions. [2024-11-28 03:00:11,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 390 transitions, 2826 flow [2024-11-28 03:00:11,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 390 transitions, 2777 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-11-28 03:00:11,288 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 863 flow [2024-11-28 03:00:11,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=863, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-11-28 03:00:11,289 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-11-28 03:00:11,289 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 863 flow [2024-11-28 03:00:11,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:11,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:11,290 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:11,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:00:11,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:00:11,490 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:11,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1680888787, now seen corresponding path program 1 times [2024-11-28 03:00:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:11,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705113843] [2024-11-28 03:00:11,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:00:11,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:11,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705113843] [2024-11-28 03:00:11,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705113843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:11,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:11,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:00:11,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971921220] [2024-11-28 03:00:11,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:11,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:11,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:11,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:11,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:00:11,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-11-28 03:00:11,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 863 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:11,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:11,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-11-28 03:00:11,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:15,302 INFO L124 PetriNetUnfolderBase]: 14883/25342 cut-off events. [2024-11-28 03:00:15,303 INFO L125 PetriNetUnfolderBase]: For 178253/179318 co-relation queries the response was YES. [2024-11-28 03:00:15,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105391 conditions, 25342 events. 14883/25342 cut-off events. For 178253/179318 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 211039 event pairs, 5592 based on Foata normal form. 864/25811 useless extension candidates. Maximal degree in co-relation 105338. Up to 11443 conditions per place. [2024-11-28 03:00:15,521 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 145 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2024-11-28 03:00:15,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 165 transitions, 1791 flow [2024-11-28 03:00:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:00:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-28 03:00:15,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-28 03:00:15,523 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 863 flow. Second operand 4 states and 116 transitions. [2024-11-28 03:00:15,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 165 transitions, 1791 flow [2024-11-28 03:00:16,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1457 flow, removed 130 selfloop flow, removed 9 redundant places. [2024-11-28 03:00:16,036 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 681 flow [2024-11-28 03:00:16,036 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=681, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-11-28 03:00:16,036 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-11-28 03:00:16,036 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 681 flow [2024-11-28 03:00:16,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:16,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:16,037 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:16,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:00:16,037 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:16,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1751386274, now seen corresponding path program 1 times [2024-11-28 03:00:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243768350] [2024-11-28 03:00:16,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:16,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:00:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243768350] [2024-11-28 03:00:16,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243768350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:16,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:16,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:00:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881350776] [2024-11-28 03:00:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:16,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:16,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:16,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:16,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:00:16,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 03:00:16,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:16,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:16,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 03:00:16,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:19,336 INFO L124 PetriNetUnfolderBase]: 11993/21452 cut-off events. [2024-11-28 03:00:19,336 INFO L125 PetriNetUnfolderBase]: For 186734/186734 co-relation queries the response was YES. [2024-11-28 03:00:19,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85452 conditions, 21452 events. 11993/21452 cut-off events. For 186734/186734 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 180334 event pairs, 2570 based on Foata normal form. 0/21083 useless extension candidates. Maximal degree in co-relation 85402. Up to 9373 conditions per place. [2024-11-28 03:00:19,490 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 194 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2024-11-28 03:00:19,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 219 transitions, 2147 flow [2024-11-28 03:00:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:00:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-28 03:00:19,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2024-11-28 03:00:19,491 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 681 flow. Second operand 4 states and 119 transitions. [2024-11-28 03:00:19,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 219 transitions, 2147 flow [2024-11-28 03:00:19,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 219 transitions, 2135 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:00:19,758 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 695 flow [2024-11-28 03:00:19,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=695, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2024-11-28 03:00:19,759 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-11-28 03:00:19,759 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 695 flow [2024-11-28 03:00:19,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:19,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:19,760 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:19,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:00:19,760 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:19,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:19,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1921771017, now seen corresponding path program 1 times [2024-11-28 03:00:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:19,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580204373] [2024-11-28 03:00:19,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:19,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:19,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:19,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580204373] [2024-11-28 03:00:19,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580204373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:19,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548729791] [2024-11-28 03:00:19,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:19,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:19,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:19,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:19,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:00:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:19,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:00:19,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:20,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548729791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:20,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-28 03:00:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651992535] [2024-11-28 03:00:20,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:20,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:00:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:20,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:00:20,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:00:20,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 03:00:20,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 695 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:20,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:20,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 03:00:20,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:25,089 INFO L124 PetriNetUnfolderBase]: 13285/25710 cut-off events. [2024-11-28 03:00:25,089 INFO L125 PetriNetUnfolderBase]: For 259938/259938 co-relation queries the response was YES. [2024-11-28 03:00:25,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105653 conditions, 25710 events. 13285/25710 cut-off events. For 259938/259938 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 236307 event pairs, 539 based on Foata normal form. 908/26435 useless extension candidates. Maximal degree in co-relation 105599. Up to 7399 conditions per place. [2024-11-28 03:00:25,295 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 304 selfloop transitions, 54 changer transitions 0/374 dead transitions. [2024-11-28 03:00:25,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 374 transitions, 3182 flow [2024-11-28 03:00:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:00:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 03:00:25,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2024-11-28 03:00:25,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2024-11-28 03:00:25,298 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 695 flow. Second operand 21 states and 652 transitions. [2024-11-28 03:00:25,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 374 transitions, 3182 flow [2024-11-28 03:00:25,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 374 transitions, 2962 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 03:00:25,841 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1083 flow [2024-11-28 03:00:25,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1083, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2024-11-28 03:00:25,842 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 86 predicate places. [2024-11-28 03:00:25,842 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1083 flow [2024-11-28 03:00:25,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:25,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:25,842 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:25,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:00:26,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:26,043 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:26,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:26,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2036726892, now seen corresponding path program 1 times [2024-11-28 03:00:26,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:26,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851674980] [2024-11-28 03:00:26,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:26,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851674980] [2024-11-28 03:00:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851674980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310433538] [2024-11-28 03:00:26,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:26,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:26,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:26,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:26,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:00:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:26,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:00:26,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:26,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:26,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310433538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:26,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:26,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-28 03:00:26,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244696686] [2024-11-28 03:00:26,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:26,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:00:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:26,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:00:26,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:00:26,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-11-28 03:00:26,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 116 transitions, 1083 flow. Second operand has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:26,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:26,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-11-28 03:00:26,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:00:36,245 INFO L124 PetriNetUnfolderBase]: 25129/48768 cut-off events. [2024-11-28 03:00:36,245 INFO L125 PetriNetUnfolderBase]: For 904612/904612 co-relation queries the response was YES. [2024-11-28 03:00:36,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201204 conditions, 48768 events. 25129/48768 cut-off events. For 904612/904612 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 483026 event pairs, 1241 based on Foata normal form. 2988/51555 useless extension candidates. Maximal degree in co-relation 201142. Up to 6607 conditions per place. [2024-11-28 03:00:36,773 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 521 selfloop transitions, 118 changer transitions 0/655 dead transitions. [2024-11-28 03:00:36,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 655 transitions, 5629 flow [2024-11-28 03:00:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 03:00:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-28 03:00:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2024-11-28 03:00:36,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2024-11-28 03:00:36,777 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1083 flow. Second operand 37 states and 1159 transitions. [2024-11-28 03:00:36,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 655 transitions, 5629 flow [2024-11-28 03:00:39,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 655 transitions, 5487 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-11-28 03:00:39,016 INFO L231 Difference]: Finished difference. Result has 169 places, 174 transitions, 2082 flow [2024-11-28 03:00:39,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2082, PETRI_PLACES=169, PETRI_TRANSITIONS=174} [2024-11-28 03:00:39,017 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2024-11-28 03:00:39,017 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 174 transitions, 2082 flow [2024-11-28 03:00:39,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:39,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:00:39,018 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:39,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:00:39,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:39,219 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 03:00:39,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash -410393663, now seen corresponding path program 2 times [2024-11-28 03:00:39,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:39,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181599579] [2024-11-28 03:00:39,220 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:00:39,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:39,250 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:00:39,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:39,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:39,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181599579] [2024-11-28 03:00:39,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181599579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:39,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274215395] [2024-11-28 03:00:39,486 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:00:39,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:39,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:39,488 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:39,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c234fdbe-cded-4062-8f16-f86263b5d1d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:00:39,568 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:00:39,568 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:39,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:00:39,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:39,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:39,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274215395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:39,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:39,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-28 03:00:39,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971503132] [2024-11-28 03:00:39,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:39,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:00:39,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:39,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:00:39,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:00:39,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-28 03:00:39,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 174 transitions, 2082 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:39,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:00:39,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-28 03:00:39,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand