./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya --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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:16:18,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:16:18,908 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:16:18,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:16:18,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:16:18,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:16:18,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:16:18,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:16:18,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:16:18,939 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:16:18,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:16:18,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:16:18,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:16:18,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:16:18,942 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:16:18,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:16:18,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:16:18,944 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:16:18,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:16:18,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:16:18,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:16:18,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:16:18,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:16:18,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:16:18,947 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:16:18,948 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:16:18,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:16:18,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:16:18,949 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:16:18,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:16:18,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:16:18,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:16:18,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:16:18,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:16:18,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:16:18,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:16:18,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:16:18,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:16:18,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:16:18,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:16:18,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:16:18,959 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:16:18,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:16:18,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:16:18,960 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2023-11-29 06:16:19,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:16:19,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:16:19,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:16:19,198 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:16:19,198 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:16:19,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-29 06:16:21,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:16:22,076 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:16:22,077 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-29 06:16:22,093 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/data/fd17a913f/7973598905154042a99115f5caff00e4/FLAG360509519 [2023-11-29 06:16:22,105 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/data/fd17a913f/7973598905154042a99115f5caff00e4 [2023-11-29 06:16:22,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:16:22,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:16:22,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:16:22,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:16:22,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:16:22,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362632c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22, skipping insertion in model container [2023-11-29 06:16:22,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,169 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:16:22,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:16:22,652 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:16:22,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:16:22,757 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:16:22,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22 WrapperNode [2023-11-29 06:16:22,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:16:22,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:16:22,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:16:22,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:16:22,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,808 INFO L138 Inliner]: procedures = 263, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2023-11-29 06:16:22,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:16:22,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:16:22,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:16:22,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:16:22,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,841 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [5, 1]. 83 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [3, 1]. [2023-11-29 06:16:22,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:16:22,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:16:22,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:16:22,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:16:22,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (1/1) ... [2023-11-29 06:16:22,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:16:22,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:22,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:16:22,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:16:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:16:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:16:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 06:16:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:16:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:16:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:16:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:16:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 06:16:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:16:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 06:16:22,931 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 06:16:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:16:22,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:16:22,932 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:16:23,073 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:16:23,076 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:16:23,249 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:16:23,362 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:16:23,362 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 06:16:23,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:16:23 BoogieIcfgContainer [2023-11-29 06:16:23,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:16:23,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:16:23,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:16:23,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:16:23,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:16:22" (1/3) ... [2023-11-29 06:16:23,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4998b943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:16:23, skipping insertion in model container [2023-11-29 06:16:23,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:22" (2/3) ... [2023-11-29 06:16:23,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4998b943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:16:23, skipping insertion in model container [2023-11-29 06:16:23,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:16:23" (3/3) ... [2023-11-29 06:16:23,391 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2023-11-29 06:16:23,400 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:16:23,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:16:23,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 06:16:23,411 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:16:23,448 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 06:16:23,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 82 flow [2023-11-29 06:16:23,504 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2023-11-29 06:16:23,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:16:23,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-29 06:16:23,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 82 flow [2023-11-29 06:16:23,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 79 flow [2023-11-29 06:16:23,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:16:23,527 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@6bc4c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:16:23,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-29 06:16:23,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:16:23,531 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 06:16:23,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:16:23,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:23,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 06:16:23,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:23,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash 255141, now seen corresponding path program 1 times [2023-11-29 06:16:23,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:23,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612877157] [2023-11-29 06:16:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:23,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:23,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:23,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612877157] [2023-11-29 06:16:23,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612877157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:23,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:23,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:16:23,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646118598] [2023-11-29 06:16:23,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:23,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:16:23,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:23,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:16:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:16:23,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:23,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:23,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:23,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:23,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:23,984 INFO L124 PetriNetUnfolderBase]: 83/260 cut-off events. [2023-11-29 06:16:23,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:16:23,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 260 events. 83/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1144 event pairs, 64 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 411. Up to 170 conditions per place. [2023-11-29 06:16:23,989 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2023-11-29 06:16:23,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 137 flow [2023-11-29 06:16:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:16:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:16:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2023-11-29 06:16:24,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2023-11-29 06:16:24,003 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 86 transitions. [2023-11-29 06:16:24,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 86 transitions. [2023-11-29 06:16:24,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:24,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 86 transitions. [2023-11-29 06:16:24,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-29 06:16:24,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,016 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 4 states and 86 transitions. [2023-11-29 06:16:24,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 137 flow [2023-11-29 06:16:24,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:16:24,022 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 102 flow [2023-11-29 06:16:24,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-29 06:16:24,028 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-29 06:16:24,028 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 102 flow [2023-11-29 06:16:24,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:24,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 06:16:24,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:16:24,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:24,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash -988778725, now seen corresponding path program 1 times [2023-11-29 06:16:24,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:24,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090054260] [2023-11-29 06:16:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:24,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:24,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:24,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090054260] [2023-11-29 06:16:24,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090054260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:24,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622139837] [2023-11-29 06:16:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:24,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:24,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:24,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:24,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:16:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:24,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:16:24,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:24,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:24,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622139837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:24,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:16:24,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 06:16:24,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125004653] [2023-11-29 06:16:24,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:24,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:16:24,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:24,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:16:24,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:24,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:24,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:24,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:24,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:24,423 INFO L124 PetriNetUnfolderBase]: 83/259 cut-off events. [2023-11-29 06:16:24,423 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 06:16:24,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 259 events. 83/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1140 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 428. Up to 165 conditions per place. [2023-11-29 06:16:24,426 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2023-11-29 06:16:24,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 150 flow [2023-11-29 06:16:24,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:16:24,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:16:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2023-11-29 06:16:24,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2023-11-29 06:16:24,430 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 111 transitions. [2023-11-29 06:16:24,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 111 transitions. [2023-11-29 06:16:24,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:24,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 111 transitions. [2023-11-29 06:16:24,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.5) internal successors, (111), 6 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) [2023-11-29 06:16:24,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,433 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,434 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 102 flow. Second operand 6 states and 111 transitions. [2023-11-29 06:16:24,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 150 flow [2023-11-29 06:16:24,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:16:24,436 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2023-11-29 06:16:24,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-11-29 06:16:24,437 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-11-29 06:16:24,438 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2023-11-29 06:16:24,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:24,438 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 06:16:24,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:16:24,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:24,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:24,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash -587369151, now seen corresponding path program 1 times [2023-11-29 06:16:24,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:24,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346276069] [2023-11-29 06:16:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:24,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:16:24,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346276069] [2023-11-29 06:16:24,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346276069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:24,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:24,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:16:24,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328541823] [2023-11-29 06:16:24,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:24,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:16:24,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:24,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:16:24,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:16:24,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:24,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:24,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:24,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:24,768 INFO L124 PetriNetUnfolderBase]: 83/258 cut-off events. [2023-11-29 06:16:24,768 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 06:16:24,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 258 events. 83/258 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1136 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 424. Up to 168 conditions per place. [2023-11-29 06:16:24,771 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 21 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2023-11-29 06:16:24,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 154 flow [2023-11-29 06:16:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:16:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:16:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2023-11-29 06:16:24,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2023-11-29 06:16:24,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 66 transitions. [2023-11-29 06:16:24,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 66 transitions. [2023-11-29 06:16:24,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:24,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 66 transitions. [2023-11-29 06:16:24,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,776 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 3 states and 66 transitions. [2023-11-29 06:16:24,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 154 flow [2023-11-29 06:16:24,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 132 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 06:16:24,778 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 90 flow [2023-11-29 06:16:24,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-29 06:16:24,779 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-11-29 06:16:24,792 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 90 flow [2023-11-29 06:16:24,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:24,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:24,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:24,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:16:24,793 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:24,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:24,794 INFO L85 PathProgramCache]: Analyzing trace with hash -328619715, now seen corresponding path program 1 times [2023-11-29 06:16:24,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:24,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217636147] [2023-11-29 06:16:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:24,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:24,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:24,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217636147] [2023-11-29 06:16:24,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217636147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:24,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377182520] [2023-11-29 06:16:24,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:24,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:24,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:24,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:24,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:16:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:24,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:16:24,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:24,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:16:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:25,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377182520] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:16:25,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:16:25,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 06:16:25,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428414607] [2023-11-29 06:16:25,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:16:25,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:16:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:16:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:16:25,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:25,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:25,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:25,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:25,154 INFO L124 PetriNetUnfolderBase]: 83/262 cut-off events. [2023-11-29 06:16:25,154 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 06:16:25,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 262 events. 83/262 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1133 event pairs, 64 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 417. Up to 166 conditions per place. [2023-11-29 06:16:25,157 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 21 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2023-11-29 06:16:25,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 161 flow [2023-11-29 06:16:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:16:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:16:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2023-11-29 06:16:25,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2023-11-29 06:16:25,159 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 128 transitions. [2023-11-29 06:16:25,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 128 transitions. [2023-11-29 06:16:25,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:25,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 128 transitions. [2023-11-29 06:16:25,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,163 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,163 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 90 flow. Second operand 7 states and 128 transitions. [2023-11-29 06:16:25,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 161 flow [2023-11-29 06:16:25,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:16:25,165 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2023-11-29 06:16:25,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-29 06:16:25,166 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2023-11-29 06:16:25,167 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2023-11-29 06:16:25,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:25,167 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:25,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:16:25,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 06:16:25,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:25,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:25,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1263717757, now seen corresponding path program 2 times [2023-11-29 06:16:25,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:25,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730615293] [2023-11-29 06:16:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:25,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:25,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:25,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730615293] [2023-11-29 06:16:25,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730615293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:25,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231504286] [2023-11-29 06:16:25,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:16:25,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:25,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:25,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:25,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:16:25,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:16:25,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:16:25,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:16:25,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:25,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-29 06:16:25,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-29 06:16:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 06:16:25,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:25,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231504286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:25,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:16:25,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-11-29 06:16:25,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772192147] [2023-11-29 06:16:25,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:25,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:16:25,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:16:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:16:25,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:25,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:25,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:25,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:25,969 INFO L124 PetriNetUnfolderBase]: 158/395 cut-off events. [2023-11-29 06:16:25,969 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 06:16:25,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 395 events. 158/395 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1743 event pairs, 24 based on Foata normal form. 14/331 useless extension candidates. Maximal degree in co-relation 694. Up to 198 conditions per place. [2023-11-29 06:16:25,973 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 57 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2023-11-29 06:16:25,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 320 flow [2023-11-29 06:16:25,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:16:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:16:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2023-11-29 06:16:25,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2023-11-29 06:16:25,975 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 147 transitions. [2023-11-29 06:16:25,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 147 transitions. [2023-11-29 06:16:25,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:25,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 147 transitions. [2023-11-29 06:16:25,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,978 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,978 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 6 states and 147 transitions. [2023-11-29 06:16:25,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 320 flow [2023-11-29 06:16:25,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:16:25,981 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 182 flow [2023-11-29 06:16:25,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-11-29 06:16:25,982 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2023-11-29 06:16:25,983 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 182 flow [2023-11-29 06:16:25,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:25,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:25,983 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:25,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 06:16:26,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:26,189 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:26,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:26,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1282062173, now seen corresponding path program 1 times [2023-11-29 06:16:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:26,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698919697] [2023-11-29 06:16:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:26,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:26,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:26,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698919697] [2023-11-29 06:16:26,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698919697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:26,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445232123] [2023-11-29 06:16:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:26,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:26,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:26,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:26,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:16:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:26,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:16:26,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:26,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:16:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:26,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445232123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:16:26,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:16:26,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-29 06:16:26,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308423464] [2023-11-29 06:16:26,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:16:26,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:16:26,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:16:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:16:26,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:26,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 182 flow. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:26,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:26,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:26,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:26,744 INFO L124 PetriNetUnfolderBase]: 127/395 cut-off events. [2023-11-29 06:16:26,744 INFO L125 PetriNetUnfolderBase]: For 155/163 co-relation queries the response was YES. [2023-11-29 06:16:26,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 395 events. 127/395 cut-off events. For 155/163 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1885 event pairs, 77 based on Foata normal form. 4/353 useless extension candidates. Maximal degree in co-relation 770. Up to 253 conditions per place. [2023-11-29 06:16:26,748 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 29 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2023-11-29 06:16:26,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 318 flow [2023-11-29 06:16:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:16:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:16:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 250 transitions. [2023-11-29 06:16:26,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2023-11-29 06:16:26,751 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 250 transitions. [2023-11-29 06:16:26,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 250 transitions. [2023-11-29 06:16:26,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:26,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 250 transitions. [2023-11-29 06:16:26,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 16.666666666666668) internal successors, (250), 15 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:26,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:26,755 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:26,756 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 182 flow. Second operand 15 states and 250 transitions. [2023-11-29 06:16:26,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 318 flow [2023-11-29 06:16:26,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:16:26,761 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 279 flow [2023-11-29 06:16:26,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=279, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2023-11-29 06:16:26,762 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2023-11-29 06:16:26,762 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 279 flow [2023-11-29 06:16:26,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:26,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:26,763 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:26,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:16:26,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:26,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:26,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash 160198621, now seen corresponding path program 2 times [2023-11-29 06:16:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:26,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894585800] [2023-11-29 06:16:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:26,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:27,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:27,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894585800] [2023-11-29 06:16:27,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894585800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:27,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655359291] [2023-11-29 06:16:27,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:16:27,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:27,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:27,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:27,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:16:27,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:16:27,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:16:27,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:16:27,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:27,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-29 06:16:27,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-29 06:16:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 06:16:27,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655359291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:27,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:16:27,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2023-11-29 06:16:27,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140039247] [2023-11-29 06:16:27,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:27,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:16:27,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:27,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:16:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:16:27,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:27,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:27,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:27,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:27,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:27,741 INFO L124 PetriNetUnfolderBase]: 170/459 cut-off events. [2023-11-29 06:16:27,741 INFO L125 PetriNetUnfolderBase]: For 232/245 co-relation queries the response was YES. [2023-11-29 06:16:27,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 459 events. 170/459 cut-off events. For 232/245 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2137 event pairs, 30 based on Foata normal form. 14/438 useless extension candidates. Maximal degree in co-relation 949. Up to 218 conditions per place. [2023-11-29 06:16:27,746 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 68 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2023-11-29 06:16:27,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 545 flow [2023-11-29 06:16:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:16:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:16:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2023-11-29 06:16:27,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2023-11-29 06:16:27,748 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 147 transitions. [2023-11-29 06:16:27,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 147 transitions. [2023-11-29 06:16:27,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:27,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 147 transitions. [2023-11-29 06:16:27,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:27,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:27,761 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:27,761 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 279 flow. Second operand 6 states and 147 transitions. [2023-11-29 06:16:27,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 545 flow [2023-11-29 06:16:27,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 535 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 06:16:27,768 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 357 flow [2023-11-29 06:16:27,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2023-11-29 06:16:27,769 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 40 predicate places. [2023-11-29 06:16:27,769 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 357 flow [2023-11-29 06:16:27,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:27,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:27,769 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:27,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:16:27,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:27,970 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:27,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:27,971 INFO L85 PathProgramCache]: Analyzing trace with hash 102513297, now seen corresponding path program 1 times [2023-11-29 06:16:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:27,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227786597] [2023-11-29 06:16:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:27,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 06:16:28,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:28,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227786597] [2023-11-29 06:16:28,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227786597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:28,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:28,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:16:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804619530] [2023-11-29 06:16:28,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:28,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:16:28,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:28,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:16:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:16:28,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:28,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 357 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:28,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:28,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:28,313 INFO L124 PetriNetUnfolderBase]: 154/429 cut-off events. [2023-11-29 06:16:28,313 INFO L125 PetriNetUnfolderBase]: For 479/496 co-relation queries the response was YES. [2023-11-29 06:16:28,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 429 events. 154/429 cut-off events. For 479/496 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1992 event pairs, 37 based on Foata normal form. 18/429 useless extension candidates. Maximal degree in co-relation 1019. Up to 236 conditions per place. [2023-11-29 06:16:28,317 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 66 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2023-11-29 06:16:28,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 577 flow [2023-11-29 06:16:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:16:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:16:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2023-11-29 06:16:28,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2023-11-29 06:16:28,319 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 144 transitions. [2023-11-29 06:16:28,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 144 transitions. [2023-11-29 06:16:28,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:28,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 144 transitions. [2023-11-29 06:16:28,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,321 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 357 flow. Second operand 6 states and 144 transitions. [2023-11-29 06:16:28,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 577 flow [2023-11-29 06:16:28,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 88 transitions, 569 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:16:28,327 INFO L231 Difference]: Finished difference. Result has 83 places, 64 transitions, 365 flow [2023-11-29 06:16:28,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=83, PETRI_TRANSITIONS=64} [2023-11-29 06:16:28,328 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2023-11-29 06:16:28,329 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 64 transitions, 365 flow [2023-11-29 06:16:28,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:28,329 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:28,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:16:28,329 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:28,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:28,330 INFO L85 PathProgramCache]: Analyzing trace with hash 671190232, now seen corresponding path program 1 times [2023-11-29 06:16:28,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:28,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753872174] [2023-11-29 06:16:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:28,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 06:16:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753872174] [2023-11-29 06:16:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753872174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:28,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:28,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:16:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505048665] [2023-11-29 06:16:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:28,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:16:28,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:16:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:16:28,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:28,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 64 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:28,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:28,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:28,652 INFO L124 PetriNetUnfolderBase]: 156/433 cut-off events. [2023-11-29 06:16:28,652 INFO L125 PetriNetUnfolderBase]: For 491/496 co-relation queries the response was YES. [2023-11-29 06:16:28,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 433 events. 156/433 cut-off events. For 491/496 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1975 event pairs, 37 based on Foata normal form. 16/431 useless extension candidates. Maximal degree in co-relation 1054. Up to 238 conditions per place. [2023-11-29 06:16:28,656 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 65 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2023-11-29 06:16:28,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 591 flow [2023-11-29 06:16:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:16:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:16:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2023-11-29 06:16:28,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2023-11-29 06:16:28,658 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 144 transitions. [2023-11-29 06:16:28,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 144 transitions. [2023-11-29 06:16:28,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:28,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 144 transitions. [2023-11-29 06:16:28,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,677 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,678 INFO L175 Difference]: Start difference. First operand has 83 places, 64 transitions, 365 flow. Second operand 6 states and 144 transitions. [2023-11-29 06:16:28,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 591 flow [2023-11-29 06:16:28,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 556 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 06:16:28,684 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 356 flow [2023-11-29 06:16:28,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2023-11-29 06:16:28,685 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2023-11-29 06:16:28,685 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 356 flow [2023-11-29 06:16:28,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:28,686 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:28,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:16:28,686 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:28,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:28,686 INFO L85 PathProgramCache]: Analyzing trace with hash 252128508, now seen corresponding path program 1 times [2023-11-29 06:16:28,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:28,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094917175] [2023-11-29 06:16:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:28,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 06:16:28,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094917175] [2023-11-29 06:16:28,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094917175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:28,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:28,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:16:28,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150786582] [2023-11-29 06:16:28,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:28,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:16:28,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:16:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:16:28,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:28,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:28,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:28,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:28,951 INFO L124 PetriNetUnfolderBase]: 213/564 cut-off events. [2023-11-29 06:16:28,951 INFO L125 PetriNetUnfolderBase]: For 474/486 co-relation queries the response was YES. [2023-11-29 06:16:28,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 564 events. 213/564 cut-off events. For 474/486 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2645 event pairs, 68 based on Foata normal form. 24/572 useless extension candidates. Maximal degree in co-relation 1361. Up to 245 conditions per place. [2023-11-29 06:16:28,954 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 80 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2023-11-29 06:16:28,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 644 flow [2023-11-29 06:16:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:16:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:16:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-29 06:16:28,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2023-11-29 06:16:28,956 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-29 06:16:28,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-29 06:16:28,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:28,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-29 06:16:28,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,957 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,957 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 356 flow. Second operand 4 states and 109 transitions. [2023-11-29 06:16:28,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 644 flow [2023-11-29 06:16:28,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 611 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 06:16:28,961 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 357 flow [2023-11-29 06:16:28,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2023-11-29 06:16:28,962 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2023-11-29 06:16:28,962 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 357 flow [2023-11-29 06:16:28,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:28,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:28,963 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:28,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:16:28,963 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:28,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1939252576, now seen corresponding path program 1 times [2023-11-29 06:16:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:28,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614403071] [2023-11-29 06:16:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:28,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 06:16:29,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614403071] [2023-11-29 06:16:29,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614403071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:29,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:29,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:16:29,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704119753] [2023-11-29 06:16:29,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:29,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:16:29,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:29,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:16:29,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:16:29,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:29,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:29,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:29,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:29,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:29,200 INFO L124 PetriNetUnfolderBase]: 318/853 cut-off events. [2023-11-29 06:16:29,200 INFO L125 PetriNetUnfolderBase]: For 631/641 co-relation queries the response was YES. [2023-11-29 06:16:29,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 853 events. 318/853 cut-off events. For 631/641 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4398 event pairs, 152 based on Foata normal form. 33/869 useless extension candidates. Maximal degree in co-relation 2093. Up to 394 conditions per place. [2023-11-29 06:16:29,206 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 86 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-11-29 06:16:29,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 683 flow [2023-11-29 06:16:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:16:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:16:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-29 06:16:29,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2023-11-29 06:16:29,207 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-29 06:16:29,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-29 06:16:29,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:29,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-29 06:16:29,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:29,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:29,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:29,209 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 357 flow. Second operand 4 states and 109 transitions. [2023-11-29 06:16:29,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 683 flow [2023-11-29 06:16:29,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:16:29,213 INFO L231 Difference]: Finished difference. Result has 87 places, 67 transitions, 379 flow [2023-11-29 06:16:29,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=87, PETRI_TRANSITIONS=67} [2023-11-29 06:16:29,214 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2023-11-29 06:16:29,214 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 67 transitions, 379 flow [2023-11-29 06:16:29,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:29,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:29,214 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:29,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:16:29,214 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:29,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:29,215 INFO L85 PathProgramCache]: Analyzing trace with hash 940845569, now seen corresponding path program 1 times [2023-11-29 06:16:29,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:29,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038442569] [2023-11-29 06:16:29,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:29,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:29,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:29,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038442569] [2023-11-29 06:16:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038442569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365962843] [2023-11-29 06:16:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:29,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:29,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:29,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:29,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:16:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:29,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:16:29,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:29,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:16:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:16:29,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365962843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:16:29,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:16:29,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-29 06:16:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717364178] [2023-11-29 06:16:29,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:16:29,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:16:29,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:16:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:16:29,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:16:29,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 67 transitions, 379 flow. Second operand has 23 states, 23 states have (on average 15.521739130434783) internal successors, (357), 23 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:29,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:29,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:16:29,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:30,143 INFO L124 PetriNetUnfolderBase]: 284/820 cut-off events. [2023-11-29 06:16:30,143 INFO L125 PetriNetUnfolderBase]: For 725/745 co-relation queries the response was YES. [2023-11-29 06:16:30,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2249 conditions, 820 events. 284/820 cut-off events. For 725/745 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4309 event pairs, 187 based on Foata normal form. 3/823 useless extension candidates. Maximal degree in co-relation 2104. Up to 564 conditions per place. [2023-11-29 06:16:30,149 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 39 selfloop transitions, 21 changer transitions 0/73 dead transitions. [2023-11-29 06:16:30,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 73 transitions, 553 flow [2023-11-29 06:16:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:16:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 06:16:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 339 transitions. [2023-11-29 06:16:30,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2023-11-29 06:16:30,152 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 339 transitions. [2023-11-29 06:16:30,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 339 transitions. [2023-11-29 06:16:30,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:30,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 339 transitions. [2023-11-29 06:16:30,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 16.142857142857142) internal successors, (339), 21 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:30,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 39.0) internal successors, (858), 22 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:30,155 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 39.0) internal successors, (858), 22 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:30,155 INFO L175 Difference]: Start difference. First operand has 87 places, 67 transitions, 379 flow. Second operand 21 states and 339 transitions. [2023-11-29 06:16:30,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 73 transitions, 553 flow [2023-11-29 06:16:30,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 73 transitions, 551 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:16:30,160 INFO L231 Difference]: Finished difference. Result has 109 places, 73 transitions, 488 flow [2023-11-29 06:16:30,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=488, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2023-11-29 06:16:30,161 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2023-11-29 06:16:30,161 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 488 flow [2023-11-29 06:16:30,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.521739130434783) internal successors, (357), 23 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:30,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:30,162 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:30,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:16:30,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:30,363 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:30,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1485452491, now seen corresponding path program 2 times [2023-11-29 06:16:30,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:30,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126058066] [2023-11-29 06:16:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:30,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:30,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:30,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126058066] [2023-11-29 06:16:30,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126058066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:30,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:30,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571460293] [2023-11-29 06:16:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:30,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:30,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:30,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:30,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:30,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 488 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:30,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:30,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:30,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:31,233 INFO L124 PetriNetUnfolderBase]: 512/1260 cut-off events. [2023-11-29 06:16:31,233 INFO L125 PetriNetUnfolderBase]: For 1401/1405 co-relation queries the response was YES. [2023-11-29 06:16:31,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1260 events. 512/1260 cut-off events. For 1401/1405 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7038 event pairs, 147 based on Foata normal form. 22/1280 useless extension candidates. Maximal degree in co-relation 3412. Up to 664 conditions per place. [2023-11-29 06:16:31,243 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 106 selfloop transitions, 36 changer transitions 0/151 dead transitions. [2023-11-29 06:16:31,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 151 transitions, 1133 flow [2023-11-29 06:16:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:16:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:16:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 288 transitions. [2023-11-29 06:16:31,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2023-11-29 06:16:31,245 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 288 transitions. [2023-11-29 06:16:31,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 288 transitions. [2023-11-29 06:16:31,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:31,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 288 transitions. [2023-11-29 06:16:31,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 19.2) internal successors, (288), 15 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:31,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:31,249 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:31,249 INFO L175 Difference]: Start difference. First operand has 109 places, 73 transitions, 488 flow. Second operand 15 states and 288 transitions. [2023-11-29 06:16:31,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 151 transitions, 1133 flow [2023-11-29 06:16:31,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 151 transitions, 1090 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-11-29 06:16:31,271 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 750 flow [2023-11-29 06:16:31,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=750, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2023-11-29 06:16:31,272 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2023-11-29 06:16:31,272 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 750 flow [2023-11-29 06:16:31,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:31,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:31,273 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:31,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:16:31,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:31,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 348839251, now seen corresponding path program 3 times [2023-11-29 06:16:31,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:31,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142306263] [2023-11-29 06:16:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:31,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:31,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:31,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142306263] [2023-11-29 06:16:31,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142306263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:31,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:31,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:31,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424087680] [2023-11-29 06:16:31,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:31,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:31,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:31,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:31,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:31,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:31,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 750 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:31,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:31,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:31,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:32,312 INFO L124 PetriNetUnfolderBase]: 605/1462 cut-off events. [2023-11-29 06:16:32,312 INFO L125 PetriNetUnfolderBase]: For 3590/3592 co-relation queries the response was YES. [2023-11-29 06:16:32,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 1462 events. 605/1462 cut-off events. For 3590/3592 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8510 event pairs, 183 based on Foata normal form. 20/1479 useless extension candidates. Maximal degree in co-relation 4620. Up to 677 conditions per place. [2023-11-29 06:16:32,328 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 104 selfloop transitions, 50 changer transitions 0/163 dead transitions. [2023-11-29 06:16:32,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 163 transitions, 1378 flow [2023-11-29 06:16:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:16:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:16:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 296 transitions. [2023-11-29 06:16:32,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2023-11-29 06:16:32,330 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 296 transitions. [2023-11-29 06:16:32,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 296 transitions. [2023-11-29 06:16:32,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:32,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 296 transitions. [2023-11-29 06:16:32,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 18.5) internal successors, (296), 16 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:32,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:32,334 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:32,334 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 750 flow. Second operand 16 states and 296 transitions. [2023-11-29 06:16:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 163 transitions, 1378 flow [2023-11-29 06:16:32,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 163 transitions, 1335 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-29 06:16:32,350 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 997 flow [2023-11-29 06:16:32,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=997, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2023-11-29 06:16:32,351 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 92 predicate places. [2023-11-29 06:16:32,351 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 997 flow [2023-11-29 06:16:32,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:32,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:32,352 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:32,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:16:32,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:32,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash -361064372, now seen corresponding path program 1 times [2023-11-29 06:16:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:32,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062835646] [2023-11-29 06:16:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:32,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:32,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:32,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062835646] [2023-11-29 06:16:32,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062835646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:32,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:32,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57736973] [2023-11-29 06:16:32,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:32,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:32,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:32,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 997 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:32,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:32,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:32,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:33,235 INFO L124 PetriNetUnfolderBase]: 701/1654 cut-off events. [2023-11-29 06:16:33,236 INFO L125 PetriNetUnfolderBase]: For 6982/6990 co-relation queries the response was YES. [2023-11-29 06:16:33,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6151 conditions, 1654 events. 701/1654 cut-off events. For 6982/6990 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9912 event pairs, 187 based on Foata normal form. 20/1673 useless extension candidates. Maximal degree in co-relation 5988. Up to 965 conditions per place. [2023-11-29 06:16:33,249 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 140 selfloop transitions, 47 changer transitions 0/196 dead transitions. [2023-11-29 06:16:33,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 196 transitions, 2001 flow [2023-11-29 06:16:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:16:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 06:16:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 245 transitions. [2023-11-29 06:16:33,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235042735042735 [2023-11-29 06:16:33,251 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 245 transitions. [2023-11-29 06:16:33,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 245 transitions. [2023-11-29 06:16:33,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:33,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 245 transitions. [2023-11-29 06:16:33,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.416666666666668) internal successors, (245), 12 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:33,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:33,254 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:33,254 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 997 flow. Second operand 12 states and 245 transitions. [2023-11-29 06:16:33,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 196 transitions, 2001 flow [2023-11-29 06:16:33,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 196 transitions, 1935 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-29 06:16:33,277 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 1282 flow [2023-11-29 06:16:33,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1282, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2023-11-29 06:16:33,278 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2023-11-29 06:16:33,278 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 1282 flow [2023-11-29 06:16:33,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:33,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:33,278 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:33,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:16:33,278 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:33,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:33,279 INFO L85 PathProgramCache]: Analyzing trace with hash 379139581, now seen corresponding path program 4 times [2023-11-29 06:16:33,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:33,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681370203] [2023-11-29 06:16:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:33,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:33,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:33,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681370203] [2023-11-29 06:16:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681370203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:33,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:33,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:33,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491032752] [2023-11-29 06:16:33,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:33,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:33,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:33,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:33,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 1282 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:33,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:33,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:33,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:34,333 INFO L124 PetriNetUnfolderBase]: 905/2097 cut-off events. [2023-11-29 06:16:34,333 INFO L125 PetriNetUnfolderBase]: For 12130/12142 co-relation queries the response was YES. [2023-11-29 06:16:34,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8443 conditions, 2097 events. 905/2097 cut-off events. For 12130/12142 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 13196 event pairs, 92 based on Foata normal form. 48/2145 useless extension candidates. Maximal degree in co-relation 8275. Up to 763 conditions per place. [2023-11-29 06:16:34,351 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 144 selfloop transitions, 87 changer transitions 0/240 dead transitions. [2023-11-29 06:16:34,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 240 transitions, 2519 flow [2023-11-29 06:16:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:16:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:16:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 320 transitions. [2023-11-29 06:16:34,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-11-29 06:16:34,353 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 320 transitions. [2023-11-29 06:16:34,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 320 transitions. [2023-11-29 06:16:34,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:34,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 320 transitions. [2023-11-29 06:16:34,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:34,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:34,355 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:34,356 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 1282 flow. Second operand 16 states and 320 transitions. [2023-11-29 06:16:34,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 240 transitions, 2519 flow [2023-11-29 06:16:34,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 240 transitions, 2427 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-11-29 06:16:34,388 INFO L231 Difference]: Finished difference. Result has 154 places, 157 transitions, 1876 flow [2023-11-29 06:16:34,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1876, PETRI_PLACES=154, PETRI_TRANSITIONS=157} [2023-11-29 06:16:34,388 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 115 predicate places. [2023-11-29 06:16:34,389 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 157 transitions, 1876 flow [2023-11-29 06:16:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:34,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:34,389 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:34,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:16:34,389 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:34,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:34,390 INFO L85 PathProgramCache]: Analyzing trace with hash 216909068, now seen corresponding path program 2 times [2023-11-29 06:16:34,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:34,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21160532] [2023-11-29 06:16:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21160532] [2023-11-29 06:16:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21160532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:34,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:34,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:34,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344845288] [2023-11-29 06:16:34,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:34,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:34,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:34,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:34,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:34,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 157 transitions, 1876 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:34,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:34,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:34,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:35,435 INFO L124 PetriNetUnfolderBase]: 1037/2326 cut-off events. [2023-11-29 06:16:35,435 INFO L125 PetriNetUnfolderBase]: For 18565/18587 co-relation queries the response was YES. [2023-11-29 06:16:35,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10637 conditions, 2326 events. 1037/2326 cut-off events. For 18565/18587 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14840 event pairs, 278 based on Foata normal form. 21/2346 useless extension candidates. Maximal degree in co-relation 10464. Up to 1448 conditions per place. [2023-11-29 06:16:35,460 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 183 selfloop transitions, 73 changer transitions 0/265 dead transitions. [2023-11-29 06:16:35,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 265 transitions, 3515 flow [2023-11-29 06:16:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:16:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:16:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 287 transitions. [2023-11-29 06:16:35,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905982905982906 [2023-11-29 06:16:35,461 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 287 transitions. [2023-11-29 06:16:35,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 287 transitions. [2023-11-29 06:16:35,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:35,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 287 transitions. [2023-11-29 06:16:35,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 19.133333333333333) internal successors, (287), 15 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:35,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:35,464 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:35,464 INFO L175 Difference]: Start difference. First operand has 154 places, 157 transitions, 1876 flow. Second operand 15 states and 287 transitions. [2023-11-29 06:16:35,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 265 transitions, 3515 flow [2023-11-29 06:16:35,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 265 transitions, 3350 flow, removed 56 selfloop flow, removed 9 redundant places. [2023-11-29 06:16:35,517 INFO L231 Difference]: Finished difference. Result has 163 places, 185 transitions, 2426 flow [2023-11-29 06:16:35,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2426, PETRI_PLACES=163, PETRI_TRANSITIONS=185} [2023-11-29 06:16:35,518 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 124 predicate places. [2023-11-29 06:16:35,518 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 185 transitions, 2426 flow [2023-11-29 06:16:35,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:35,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:35,518 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:35,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:16:35,519 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:35,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash 358410448, now seen corresponding path program 3 times [2023-11-29 06:16:35,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:35,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691445809] [2023-11-29 06:16:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:35,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:35,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:35,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691445809] [2023-11-29 06:16:35,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691445809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:35,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:35,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:35,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673099755] [2023-11-29 06:16:35,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:35,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:35,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:35,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 185 transitions, 2426 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:35,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:35,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:35,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:36,556 INFO L124 PetriNetUnfolderBase]: 1127/2526 cut-off events. [2023-11-29 06:16:36,556 INFO L125 PetriNetUnfolderBase]: For 24423/24442 co-relation queries the response was YES. [2023-11-29 06:16:36,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12258 conditions, 2526 events. 1127/2526 cut-off events. For 24423/24442 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16536 event pairs, 299 based on Foata normal form. 21/2545 useless extension candidates. Maximal degree in co-relation 12080. Up to 1348 conditions per place. [2023-11-29 06:16:36,577 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 167 selfloop transitions, 104 changer transitions 0/280 dead transitions. [2023-11-29 06:16:36,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 280 transitions, 3909 flow [2023-11-29 06:16:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:16:36,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:16:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 295 transitions. [2023-11-29 06:16:36,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47275641025641024 [2023-11-29 06:16:36,579 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 295 transitions. [2023-11-29 06:16:36,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 295 transitions. [2023-11-29 06:16:36,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:36,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 295 transitions. [2023-11-29 06:16:36,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 18.4375) internal successors, (295), 16 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:36,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:36,582 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:36,582 INFO L175 Difference]: Start difference. First operand has 163 places, 185 transitions, 2426 flow. Second operand 16 states and 295 transitions. [2023-11-29 06:16:36,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 280 transitions, 3909 flow [2023-11-29 06:16:36,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 280 transitions, 3806 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-29 06:16:36,667 INFO L231 Difference]: Finished difference. Result has 173 places, 200 transitions, 2945 flow [2023-11-29 06:16:36,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2945, PETRI_PLACES=173, PETRI_TRANSITIONS=200} [2023-11-29 06:16:36,668 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 134 predicate places. [2023-11-29 06:16:36,669 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 200 transitions, 2945 flow [2023-11-29 06:16:36,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:36,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:36,669 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:36,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:16:36,669 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:36,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash 155447248, now seen corresponding path program 4 times [2023-11-29 06:16:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:36,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065373226] [2023-11-29 06:16:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:36,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:36,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:36,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065373226] [2023-11-29 06:16:36,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065373226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:36,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:36,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:36,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486191885] [2023-11-29 06:16:36,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:36,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:36,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:36,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:36,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:36,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 200 transitions, 2945 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:36,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:36,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:36,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:37,894 INFO L124 PetriNetUnfolderBase]: 1236/2792 cut-off events. [2023-11-29 06:16:37,894 INFO L125 PetriNetUnfolderBase]: For 33649/33653 co-relation queries the response was YES. [2023-11-29 06:16:37,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14254 conditions, 2792 events. 1236/2792 cut-off events. For 33649/33653 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 18599 event pairs, 160 based on Foata normal form. 54/2846 useless extension candidates. Maximal degree in co-relation 14072. Up to 1067 conditions per place. [2023-11-29 06:16:37,914 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 168 selfloop transitions, 144 changer transitions 0/321 dead transitions. [2023-11-29 06:16:37,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 321 transitions, 4733 flow [2023-11-29 06:16:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:16:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:16:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 317 transitions. [2023-11-29 06:16:37,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080128205128205 [2023-11-29 06:16:37,915 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 317 transitions. [2023-11-29 06:16:37,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 317 transitions. [2023-11-29 06:16:37,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:37,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 317 transitions. [2023-11-29 06:16:37,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 19.8125) internal successors, (317), 16 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) [2023-11-29 06:16:37,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:37,918 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:37,918 INFO L175 Difference]: Start difference. First operand has 173 places, 200 transitions, 2945 flow. Second operand 16 states and 317 transitions. [2023-11-29 06:16:37,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 321 transitions, 4733 flow [2023-11-29 06:16:37,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 321 transitions, 4639 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-11-29 06:16:37,988 INFO L231 Difference]: Finished difference. Result has 182 places, 226 transitions, 3829 flow [2023-11-29 06:16:37,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3829, PETRI_PLACES=182, PETRI_TRANSITIONS=226} [2023-11-29 06:16:37,989 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2023-11-29 06:16:37,989 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 226 transitions, 3829 flow [2023-11-29 06:16:37,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:37,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:37,990 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:37,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:16:37,990 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:37,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:37,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1818779333, now seen corresponding path program 1 times [2023-11-29 06:16:37,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:37,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083554467] [2023-11-29 06:16:37,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:37,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:38,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:38,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083554467] [2023-11-29 06:16:38,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083554467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:38,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:38,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:38,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716359926] [2023-11-29 06:16:38,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:38,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:38,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:38,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:38,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:38,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:38,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 226 transitions, 3829 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:38,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:38,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:38,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:39,138 INFO L124 PetriNetUnfolderBase]: 1215/2697 cut-off events. [2023-11-29 06:16:39,138 INFO L125 PetriNetUnfolderBase]: For 41767/41808 co-relation queries the response was YES. [2023-11-29 06:16:39,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15385 conditions, 2697 events. 1215/2697 cut-off events. For 41767/41808 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 17684 event pairs, 405 based on Foata normal form. 21/2716 useless extension candidates. Maximal degree in co-relation 15196. Up to 2065 conditions per place. [2023-11-29 06:16:39,162 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 230 selfloop transitions, 52 changer transitions 0/291 dead transitions. [2023-11-29 06:16:39,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 291 transitions, 5095 flow [2023-11-29 06:16:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:16:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:16:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 281 transitions. [2023-11-29 06:16:39,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48034188034188036 [2023-11-29 06:16:39,163 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 281 transitions. [2023-11-29 06:16:39,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 281 transitions. [2023-11-29 06:16:39,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:39,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 281 transitions. [2023-11-29 06:16:39,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:39,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:39,166 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:39,166 INFO L175 Difference]: Start difference. First operand has 182 places, 226 transitions, 3829 flow. Second operand 15 states and 281 transitions. [2023-11-29 06:16:39,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 291 transitions, 5095 flow [2023-11-29 06:16:39,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 291 transitions, 4915 flow, removed 54 selfloop flow, removed 10 redundant places. [2023-11-29 06:16:39,283 INFO L231 Difference]: Finished difference. Result has 187 places, 226 transitions, 3803 flow [2023-11-29 06:16:39,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3803, PETRI_PLACES=187, PETRI_TRANSITIONS=226} [2023-11-29 06:16:39,284 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2023-11-29 06:16:39,284 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 226 transitions, 3803 flow [2023-11-29 06:16:39,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:39,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:39,284 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:39,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:16:39,284 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:39,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1691906633, now seen corresponding path program 1 times [2023-11-29 06:16:39,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:39,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020031293] [2023-11-29 06:16:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:39,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:39,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020031293] [2023-11-29 06:16:39,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020031293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:39,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:39,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:39,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524728110] [2023-11-29 06:16:39,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:39,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:39,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:39,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:39,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:39,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:39,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 226 transitions, 3803 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:39,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:39,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:39,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:40,211 INFO L124 PetriNetUnfolderBase]: 1194/2684 cut-off events. [2023-11-29 06:16:40,211 INFO L125 PetriNetUnfolderBase]: For 39667/39698 co-relation queries the response was YES. [2023-11-29 06:16:40,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14899 conditions, 2684 events. 1194/2684 cut-off events. For 39667/39698 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17673 event pairs, 406 based on Foata normal form. 21/2703 useless extension candidates. Maximal degree in co-relation 14709. Up to 2038 conditions per place. [2023-11-29 06:16:40,235 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 212 selfloop transitions, 61 changer transitions 0/282 dead transitions. [2023-11-29 06:16:40,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 282 transitions, 4826 flow [2023-11-29 06:16:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:16:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 06:16:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2023-11-29 06:16:40,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2023-11-29 06:16:40,237 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 238 transitions. [2023-11-29 06:16:40,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 238 transitions. [2023-11-29 06:16:40,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:40,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 238 transitions. [2023-11-29 06:16:40,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:40,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:40,240 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:40,240 INFO L175 Difference]: Start difference. First operand has 187 places, 226 transitions, 3803 flow. Second operand 12 states and 238 transitions. [2023-11-29 06:16:40,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 282 transitions, 4826 flow [2023-11-29 06:16:40,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 282 transitions, 4720 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-11-29 06:16:40,398 INFO L231 Difference]: Finished difference. Result has 185 places, 225 transitions, 3812 flow [2023-11-29 06:16:40,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3812, PETRI_PLACES=185, PETRI_TRANSITIONS=225} [2023-11-29 06:16:40,399 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2023-11-29 06:16:40,399 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 225 transitions, 3812 flow [2023-11-29 06:16:40,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:40,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:40,400 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:40,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 06:16:40,400 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:40,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:40,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2070884869, now seen corresponding path program 2 times [2023-11-29 06:16:40,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:40,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051854349] [2023-11-29 06:16:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:40,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:40,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:40,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051854349] [2023-11-29 06:16:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051854349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:40,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:40,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447442737] [2023-11-29 06:16:40,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:40,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:40,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:40,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 225 transitions, 3812 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:40,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:40,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:40,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:41,525 INFO L124 PetriNetUnfolderBase]: 1173/2641 cut-off events. [2023-11-29 06:16:41,525 INFO L125 PetriNetUnfolderBase]: For 38686/38726 co-relation queries the response was YES. [2023-11-29 06:16:41,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14597 conditions, 2641 events. 1173/2641 cut-off events. For 38686/38726 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 17382 event pairs, 378 based on Foata normal form. 21/2660 useless extension candidates. Maximal degree in co-relation 14408. Up to 1947 conditions per place. [2023-11-29 06:16:41,549 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 208 selfloop transitions, 66 changer transitions 0/283 dead transitions. [2023-11-29 06:16:41,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 283 transitions, 4934 flow [2023-11-29 06:16:41,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:16:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:16:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 289 transitions. [2023-11-29 06:16:41,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46314102564102566 [2023-11-29 06:16:41,551 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 289 transitions. [2023-11-29 06:16:41,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 289 transitions. [2023-11-29 06:16:41,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:41,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 289 transitions. [2023-11-29 06:16:41,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 18.0625) internal successors, (289), 16 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:41,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:41,554 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:41,554 INFO L175 Difference]: Start difference. First operand has 185 places, 225 transitions, 3812 flow. Second operand 16 states and 289 transitions. [2023-11-29 06:16:41,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 283 transitions, 4934 flow [2023-11-29 06:16:41,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 283 transitions, 4831 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-29 06:16:41,669 INFO L231 Difference]: Finished difference. Result has 190 places, 224 transitions, 3833 flow [2023-11-29 06:16:41,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3701, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3833, PETRI_PLACES=190, PETRI_TRANSITIONS=224} [2023-11-29 06:16:41,669 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 151 predicate places. [2023-11-29 06:16:41,670 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 224 transitions, 3833 flow [2023-11-29 06:16:41,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:41,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:41,670 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:41,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 06:16:41,670 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:41,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1131574639, now seen corresponding path program 3 times [2023-11-29 06:16:41,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:41,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107267301] [2023-11-29 06:16:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:41,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:41,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:41,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107267301] [2023-11-29 06:16:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107267301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:41,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:41,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761929731] [2023-11-29 06:16:41,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:41,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:41,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:41,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:41,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:41,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 224 transitions, 3833 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:41,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:41,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:41,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:42,723 INFO L124 PetriNetUnfolderBase]: 1152/2604 cut-off events. [2023-11-29 06:16:42,723 INFO L125 PetriNetUnfolderBase]: For 38152/38189 co-relation queries the response was YES. [2023-11-29 06:16:42,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14409 conditions, 2604 events. 1152/2604 cut-off events. For 38152/38189 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17182 event pairs, 324 based on Foata normal form. 21/2624 useless extension candidates. Maximal degree in co-relation 14221. Up to 1826 conditions per place. [2023-11-29 06:16:42,742 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 214 selfloop transitions, 77 changer transitions 0/300 dead transitions. [2023-11-29 06:16:42,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 300 transitions, 5201 flow [2023-11-29 06:16:42,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:16:42,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:16:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 283 transitions. [2023-11-29 06:16:42,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48376068376068376 [2023-11-29 06:16:42,743 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 283 transitions. [2023-11-29 06:16:42,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 283 transitions. [2023-11-29 06:16:42,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:42,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 283 transitions. [2023-11-29 06:16:42,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 18.866666666666667) internal successors, (283), 15 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:42,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:42,745 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:42,746 INFO L175 Difference]: Start difference. First operand has 190 places, 224 transitions, 3833 flow. Second operand 15 states and 283 transitions. [2023-11-29 06:16:42,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 300 transitions, 5201 flow [2023-11-29 06:16:42,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 300 transitions, 5092 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-11-29 06:16:42,835 INFO L231 Difference]: Finished difference. Result has 195 places, 234 transitions, 4119 flow [2023-11-29 06:16:42,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4119, PETRI_PLACES=195, PETRI_TRANSITIONS=234} [2023-11-29 06:16:42,836 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 156 predicate places. [2023-11-29 06:16:42,836 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 234 transitions, 4119 flow [2023-11-29 06:16:42,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:42,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:42,836 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:42,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 06:16:42,836 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:42,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1865753207, now seen corresponding path program 2 times [2023-11-29 06:16:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:42,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028917708] [2023-11-29 06:16:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:42,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:43,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:43,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028917708] [2023-11-29 06:16:43,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028917708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:43,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:43,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:43,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480649182] [2023-11-29 06:16:43,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:43,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:43,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:43,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:43,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:43,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 234 transitions, 4119 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:43,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:43,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:43,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:43,867 INFO L124 PetriNetUnfolderBase]: 1131/2585 cut-off events. [2023-11-29 06:16:43,867 INFO L125 PetriNetUnfolderBase]: For 40235/40266 co-relation queries the response was YES. [2023-11-29 06:16:43,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 2585 events. 1131/2585 cut-off events. For 40235/40266 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 17058 event pairs, 377 based on Foata normal form. 21/2604 useless extension candidates. Maximal degree in co-relation 14512. Up to 1950 conditions per place. [2023-11-29 06:16:43,885 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 222 selfloop transitions, 61 changer transitions 0/292 dead transitions. [2023-11-29 06:16:43,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 292 transitions, 5213 flow [2023-11-29 06:16:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:16:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:16:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 281 transitions. [2023-11-29 06:16:43,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48034188034188036 [2023-11-29 06:16:43,887 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 281 transitions. [2023-11-29 06:16:43,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 281 transitions. [2023-11-29 06:16:43,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:43,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 281 transitions. [2023-11-29 06:16:43,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:43,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:43,889 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:43,890 INFO L175 Difference]: Start difference. First operand has 195 places, 234 transitions, 4119 flow. Second operand 15 states and 281 transitions. [2023-11-29 06:16:43,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 292 transitions, 5213 flow [2023-11-29 06:16:43,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 292 transitions, 5091 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-11-29 06:16:43,998 INFO L231 Difference]: Finished difference. Result has 198 places, 233 transitions, 4115 flow [2023-11-29 06:16:43,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3993, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4115, PETRI_PLACES=198, PETRI_TRANSITIONS=233} [2023-11-29 06:16:43,998 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 159 predicate places. [2023-11-29 06:16:43,999 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 233 transitions, 4115 flow [2023-11-29 06:16:43,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:43,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:43,999 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:43,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 06:16:43,999 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:43,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:43,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1774177723, now seen corresponding path program 3 times [2023-11-29 06:16:44,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:44,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394384553] [2023-11-29 06:16:44,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:44,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:44,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:44,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394384553] [2023-11-29 06:16:44,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394384553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:44,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:44,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626338828] [2023-11-29 06:16:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:44,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:44,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:44,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:44,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 233 transitions, 4115 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:44,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:44,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:44,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:44,958 INFO L124 PetriNetUnfolderBase]: 1110/2578 cut-off events. [2023-11-29 06:16:44,959 INFO L125 PetriNetUnfolderBase]: For 40090/40115 co-relation queries the response was YES. [2023-11-29 06:16:44,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14497 conditions, 2578 events. 1110/2578 cut-off events. For 40090/40115 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17200 event pairs, 349 based on Foata normal form. 21/2597 useless extension candidates. Maximal degree in co-relation 14306. Up to 1806 conditions per place. [2023-11-29 06:16:44,977 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 189 selfloop transitions, 87 changer transitions 0/285 dead transitions. [2023-11-29 06:16:44,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 285 transitions, 5107 flow [2023-11-29 06:16:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:16:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:16:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 289 transitions. [2023-11-29 06:16:44,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46314102564102566 [2023-11-29 06:16:44,978 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 289 transitions. [2023-11-29 06:16:44,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 289 transitions. [2023-11-29 06:16:44,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:44,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 289 transitions. [2023-11-29 06:16:44,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 18.0625) internal successors, (289), 16 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:44,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:44,980 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:44,980 INFO L175 Difference]: Start difference. First operand has 198 places, 233 transitions, 4115 flow. Second operand 16 states and 289 transitions. [2023-11-29 06:16:44,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 285 transitions, 5107 flow [2023-11-29 06:16:45,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 285 transitions, 5001 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-11-29 06:16:45,078 INFO L231 Difference]: Finished difference. Result has 200 places, 232 transitions, 4172 flow [2023-11-29 06:16:45,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4172, PETRI_PLACES=200, PETRI_TRANSITIONS=232} [2023-11-29 06:16:45,079 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 161 predicate places. [2023-11-29 06:16:45,079 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 232 transitions, 4172 flow [2023-11-29 06:16:45,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:45,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:45,079 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:45,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 06:16:45,079 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:45,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash 523897669, now seen corresponding path program 4 times [2023-11-29 06:16:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:45,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518884291] [2023-11-29 06:16:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:45,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:45,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518884291] [2023-11-29 06:16:45,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518884291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:45,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:45,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:16:45,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981303125] [2023-11-29 06:16:45,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:45,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:45,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:45,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:45,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-29 06:16:45,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 232 transitions, 4172 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:45,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:16:45,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-29 06:16:45,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:16:46,218 INFO L124 PetriNetUnfolderBase]: 1089/2542 cut-off events. [2023-11-29 06:16:46,218 INFO L125 PetriNetUnfolderBase]: For 39307/39329 co-relation queries the response was YES. [2023-11-29 06:16:46,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14349 conditions, 2542 events. 1089/2542 cut-off events. For 39307/39329 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16991 event pairs, 287 based on Foata normal form. 21/2562 useless extension candidates. Maximal degree in co-relation 14159. Up to 1685 conditions per place. [2023-11-29 06:16:46,239 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 186 selfloop transitions, 100 changer transitions 0/295 dead transitions. [2023-11-29 06:16:46,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 295 transitions, 5308 flow [2023-11-29 06:16:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:16:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:16:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 283 transitions. [2023-11-29 06:16:46,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48376068376068376 [2023-11-29 06:16:46,241 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 283 transitions. [2023-11-29 06:16:46,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 283 transitions. [2023-11-29 06:16:46,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:16:46,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 283 transitions. [2023-11-29 06:16:46,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 18.866666666666667) internal successors, (283), 15 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:46,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:46,243 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:16:46,243 INFO L175 Difference]: Start difference. First operand has 200 places, 232 transitions, 4172 flow. Second operand 15 states and 283 transitions. [2023-11-29 06:16:46,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 295 transitions, 5308 flow [2023-11-29 06:16:46,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 295 transitions, 5138 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-11-29 06:16:46,361 INFO L231 Difference]: Finished difference. Result has 205 places, 237 transitions, 4380 flow [2023-11-29 06:16:46,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4380, PETRI_PLACES=205, PETRI_TRANSITIONS=237} [2023-11-29 06:16:46,362 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 166 predicate places. [2023-11-29 06:16:46,362 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 237 transitions, 4380 flow [2023-11-29 06:16:46,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-11-29 06:16:46,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:16:46,362 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:46,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 06:16:46,362 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:16:46,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1545095116, now seen corresponding path program 1 times [2023-11-29 06:16:46,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:46,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824817190] [2023-11-29 06:16:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:46,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:46,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:46,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824817190] [2023-11-29 06:16:46,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824817190] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:46,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592292227] [2023-11-29 06:16:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:46,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:46,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:46,606 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:46,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:16:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:46,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 06:16:46,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:46,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-29 06:16:46,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-29 06:16:49,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 06:16:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:16:49,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:17:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:17:02,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592292227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:17:02,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:17:02,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-29 06:17:02,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987502811] [2023-11-29 06:17:02,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:17:02,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:17:02,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:17:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:17:02,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=384, Unknown=5, NotChecked=0, Total=506 [2023-11-29 06:17:03,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:05,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:07,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:08,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:10,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:10,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2023-11-29 06:17:10,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 237 transitions, 4380 flow. Second operand has 23 states, 23 states have (on average 12.608695652173912) internal successors, (290), 23 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:17:10,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:17:10,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2023-11-29 06:17:10,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:17:11,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:13,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:14,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:16,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:18,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:27,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:17:43,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:17:47,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:17:51,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:03,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:07,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:11,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:15,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:19,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:23,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:36,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:40,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:44,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:48,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:18:52,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:19:04,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:19:08,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:19:12,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:19:16,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:19:20,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:19:24,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:19:28,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:19:52,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:19:53,214 INFO L124 PetriNetUnfolderBase]: 1402/3124 cut-off events. [2023-11-29 06:19:53,214 INFO L125 PetriNetUnfolderBase]: For 48606/48737 co-relation queries the response was YES. [2023-11-29 06:19:53,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17542 conditions, 3124 events. 1402/3124 cut-off events. For 48606/48737 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 20253 event pairs, 369 based on Foata normal form. 155/3237 useless extension candidates. Maximal degree in co-relation 17349. Up to 1667 conditions per place. [2023-11-29 06:19:53,238 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 283 selfloop transitions, 178 changer transitions 0/469 dead transitions. [2023-11-29 06:19:53,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 469 transitions, 7871 flow [2023-11-29 06:19:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 06:19:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 06:19:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 471 transitions. [2023-11-29 06:19:53,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46449704142011833 [2023-11-29 06:19:53,240 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 471 transitions. [2023-11-29 06:19:53,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 471 transitions. [2023-11-29 06:19:53,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:53,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 471 transitions. [2023-11-29 06:19:53,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 18.115384615384617) internal successors, (471), 26 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:53,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 39.0) internal successors, (1053), 27 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:53,242 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 39.0) internal successors, (1053), 27 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:53,242 INFO L175 Difference]: Start difference. First operand has 205 places, 237 transitions, 4380 flow. Second operand 26 states and 471 transitions. [2023-11-29 06:19:53,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 469 transitions, 7871 flow [2023-11-29 06:19:53,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 469 transitions, 7566 flow, removed 26 selfloop flow, removed 15 redundant places. [2023-11-29 06:19:53,368 INFO L231 Difference]: Finished difference. Result has 221 places, 321 transitions, 6081 flow [2023-11-29 06:19:53,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4103, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6081, PETRI_PLACES=221, PETRI_TRANSITIONS=321} [2023-11-29 06:19:53,369 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 182 predicate places. [2023-11-29 06:19:53,369 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 321 transitions, 6081 flow [2023-11-29 06:19:53,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.608695652173912) internal successors, (290), 23 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:53,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:53,369 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:53,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:19:53,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:53,570 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:19:53,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1976714271, now seen corresponding path program 1 times [2023-11-29 06:19:53,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:53,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161874298] [2023-11-29 06:19:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:19:53,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:53,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161874298] [2023-11-29 06:19:53,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161874298] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:19:53,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660926839] [2023-11-29 06:19:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:53,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:19:53,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:19:53,868 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:19:53,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:19:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:54,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 06:19:54,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:19:54,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-29 06:19:54,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-29 06:19:58,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 06:19:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:19:58,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:20:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:20:10,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660926839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:20:10,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:20:10,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-29 06:20:10,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564407722] [2023-11-29 06:20:10,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:20:10,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:20:10,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:10,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:20:10,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=384, Unknown=5, NotChecked=0, Total=506 [2023-11-29 06:20:12,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:14,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:16,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:18,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:20,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:20,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2023-11-29 06:20:20,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 321 transitions, 6081 flow. Second operand has 23 states, 23 states have (on average 12.608695652173912) internal successors, (290), 23 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:20,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:20:20,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2023-11-29 06:20:20,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:20:22,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:24,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:26,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:28,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:30,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:32,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:41,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:20:57,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:01,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:05,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:09,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:13,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:26,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:30,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:34,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:38,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:42,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:46,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:50,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:54,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:21:58,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:02,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:06,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:10,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:22,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:26,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:30,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:34,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:38,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:42,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:46,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:22:58,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:23:02,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:23:06,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:23:10,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:23:14,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:23:18,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:23:22,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:23:26,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:23:30,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:23:34,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:23:38,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:24:02,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:24:03,664 INFO L124 PetriNetUnfolderBase]: 1576/3489 cut-off events. [2023-11-29 06:24:03,664 INFO L125 PetriNetUnfolderBase]: For 63451/63933 co-relation queries the response was YES. [2023-11-29 06:24:03,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20678 conditions, 3489 events. 1576/3489 cut-off events. For 63451/63933 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22873 event pairs, 379 based on Foata normal form. 202/3645 useless extension candidates. Maximal degree in co-relation 20483. Up to 1896 conditions per place. [2023-11-29 06:24:03,689 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 372 selfloop transitions, 223 changer transitions 0/605 dead transitions. [2023-11-29 06:24:03,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 605 transitions, 11404 flow [2023-11-29 06:24:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 06:24:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 06:24:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 502 transitions. [2023-11-29 06:24:03,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597069597069597 [2023-11-29 06:24:03,691 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 502 transitions. [2023-11-29 06:24:03,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 502 transitions. [2023-11-29 06:24:03,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:24:03,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 502 transitions. [2023-11-29 06:24:03,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 17.928571428571427) internal successors, (502), 28 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:03,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 39.0) internal successors, (1131), 29 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:03,694 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 39.0) internal successors, (1131), 29 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:03,694 INFO L175 Difference]: Start difference. First operand has 221 places, 321 transitions, 6081 flow. Second operand 28 states and 502 transitions. [2023-11-29 06:24:03,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 605 transitions, 11404 flow [2023-11-29 06:24:03,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 605 transitions, 10360 flow, removed 312 selfloop flow, removed 12 redundant places. [2023-11-29 06:24:03,838 INFO L231 Difference]: Finished difference. Result has 243 places, 430 transitions, 8501 flow [2023-11-29 06:24:03,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4980, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8501, PETRI_PLACES=243, PETRI_TRANSITIONS=430} [2023-11-29 06:24:03,838 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 204 predicate places. [2023-11-29 06:24:03,838 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 430 transitions, 8501 flow [2023-11-29 06:24:03,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.608695652173912) internal successors, (290), 23 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:03,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:24:03,839 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:03,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:24:04,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 06:24:04,039 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:24:04,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash 764365612, now seen corresponding path program 1 times [2023-11-29 06:24:04,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:04,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522580967] [2023-11-29 06:24:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:04,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:04,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522580967] [2023-11-29 06:24:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522580967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:04,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004669819] [2023-11-29 06:24:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:04,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:04,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:04,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:04,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:24:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:04,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:24:04,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:04,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:24:04,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004669819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:04,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:24:04,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 06:24:04,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796695155] [2023-11-29 06:24:04,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:04,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:24:04,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:24:04,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:24:04,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:24:04,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 430 transitions, 8501 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:04,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:24:04,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:24:04,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:24:05,135 INFO L124 PetriNetUnfolderBase]: 1112/2655 cut-off events. [2023-11-29 06:24:05,136 INFO L125 PetriNetUnfolderBase]: For 43679/43963 co-relation queries the response was YES. [2023-11-29 06:24:05,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16120 conditions, 2655 events. 1112/2655 cut-off events. For 43679/43963 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 17416 event pairs, 211 based on Foata normal form. 145/2798 useless extension candidates. Maximal degree in co-relation 15923. Up to 951 conditions per place. [2023-11-29 06:24:05,158 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 483 selfloop transitions, 18 changer transitions 0/518 dead transitions. [2023-11-29 06:24:05,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 518 transitions, 10456 flow [2023-11-29 06:24:05,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:24:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:24:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2023-11-29 06:24:05,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6495726495726496 [2023-11-29 06:24:05,159 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2023-11-29 06:24:05,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2023-11-29 06:24:05,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:24:05,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2023-11-29 06:24:05,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:05,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:05,160 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:05,160 INFO L175 Difference]: Start difference. First operand has 243 places, 430 transitions, 8501 flow. Second operand 6 states and 152 transitions. [2023-11-29 06:24:05,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 518 transitions, 10456 flow [2023-11-29 06:24:05,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 518 transitions, 9215 flow, removed 511 selfloop flow, removed 9 redundant places. [2023-11-29 06:24:05,312 INFO L231 Difference]: Finished difference. Result has 238 places, 429 transitions, 7435 flow [2023-11-29 06:24:05,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7399, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7435, PETRI_PLACES=238, PETRI_TRANSITIONS=429} [2023-11-29 06:24:05,313 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 199 predicate places. [2023-11-29 06:24:05,313 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 429 transitions, 7435 flow [2023-11-29 06:24:05,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:05,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:24:05,314 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:05,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:24:05,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 06:24:05,514 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:24:05,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1503058, now seen corresponding path program 1 times [2023-11-29 06:24:05,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:05,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086536886] [2023-11-29 06:24:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:05,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:05,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:05,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086536886] [2023-11-29 06:24:05,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086536886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115327494] [2023-11-29 06:24:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:05,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:05,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:05,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:05,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:24:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:05,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:24:05,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:05,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:24:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115327494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:05,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:24:05,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 06:24:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549782646] [2023-11-29 06:24:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:05,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:24:05,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:24:05,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:24:05,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:24:05,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 429 transitions, 7435 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:05,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:24:05,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:24:05,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:24:06,583 INFO L124 PetriNetUnfolderBase]: 1116/2645 cut-off events. [2023-11-29 06:24:06,583 INFO L125 PetriNetUnfolderBase]: For 35736/36095 co-relation queries the response was YES. [2023-11-29 06:24:06,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 2645 events. 1116/2645 cut-off events. For 35736/36095 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 17234 event pairs, 203 based on Foata normal form. 173/2796 useless extension candidates. Maximal degree in co-relation 14795. Up to 854 conditions per place. [2023-11-29 06:24:06,604 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 503 selfloop transitions, 21 changer transitions 0/540 dead transitions. [2023-11-29 06:24:06,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 540 transitions, 9730 flow [2023-11-29 06:24:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:24:06,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:24:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2023-11-29 06:24:06,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6495726495726496 [2023-11-29 06:24:06,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2023-11-29 06:24:06,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2023-11-29 06:24:06,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:24:06,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2023-11-29 06:24:06,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:06,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:06,607 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:06,607 INFO L175 Difference]: Start difference. First operand has 238 places, 429 transitions, 7435 flow. Second operand 6 states and 152 transitions. [2023-11-29 06:24:06,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 540 transitions, 9730 flow [2023-11-29 06:24:06,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 540 transitions, 9643 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 06:24:06,731 INFO L231 Difference]: Finished difference. Result has 239 places, 428 transitions, 7451 flow [2023-11-29 06:24:06,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7409, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7451, PETRI_PLACES=239, PETRI_TRANSITIONS=428} [2023-11-29 06:24:06,731 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 200 predicate places. [2023-11-29 06:24:06,732 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 428 transitions, 7451 flow [2023-11-29 06:24:06,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:06,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:24:06,732 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:06,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:24:06,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:06,932 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:24:06,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2074469521, now seen corresponding path program 1 times [2023-11-29 06:24:06,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:06,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959857965] [2023-11-29 06:24:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:06,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 06:24:06,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:06,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959857965] [2023-11-29 06:24:06,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959857965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:06,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:06,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:24:06,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217316917] [2023-11-29 06:24:06,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:06,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:24:06,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:24:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:24:06,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:24:06,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 428 transitions, 7451 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:06,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:24:06,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:24:06,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:24:07,618 INFO L124 PetriNetUnfolderBase]: 1071/2588 cut-off events. [2023-11-29 06:24:07,619 INFO L125 PetriNetUnfolderBase]: For 33869/34081 co-relation queries the response was YES. [2023-11-29 06:24:07,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14830 conditions, 2588 events. 1071/2588 cut-off events. For 33869/34081 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 17070 event pairs, 262 based on Foata normal form. 128/2714 useless extension candidates. Maximal degree in co-relation 14636. Up to 1580 conditions per place. [2023-11-29 06:24:07,640 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 455 selfloop transitions, 22 changer transitions 0/493 dead transitions. [2023-11-29 06:24:07,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 493 transitions, 9074 flow [2023-11-29 06:24:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:24:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:24:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2023-11-29 06:24:07,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2023-11-29 06:24:07,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 99 transitions. [2023-11-29 06:24:07,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 99 transitions. [2023-11-29 06:24:07,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:24:07,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 99 transitions. [2023-11-29 06:24:07,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:07,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:07,642 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:07,642 INFO L175 Difference]: Start difference. First operand has 239 places, 428 transitions, 7451 flow. Second operand 4 states and 99 transitions. [2023-11-29 06:24:07,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 493 transitions, 9074 flow [2023-11-29 06:24:07,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 493 transitions, 8961 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-29 06:24:07,764 INFO L231 Difference]: Finished difference. Result has 237 places, 428 transitions, 7459 flow [2023-11-29 06:24:07,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7396, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7459, PETRI_PLACES=237, PETRI_TRANSITIONS=428} [2023-11-29 06:24:07,765 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 198 predicate places. [2023-11-29 06:24:07,765 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 428 transitions, 7459 flow [2023-11-29 06:24:07,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:07,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:24:07,766 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:07,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 06:24:07,766 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:24:07,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:07,766 INFO L85 PathProgramCache]: Analyzing trace with hash -46594532, now seen corresponding path program 1 times [2023-11-29 06:24:07,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:07,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376538613] [2023-11-29 06:24:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 06:24:07,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:07,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376538613] [2023-11-29 06:24:07,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376538613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:07,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:07,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:24:07,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160557447] [2023-11-29 06:24:07,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:07,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:24:07,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:07,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:24:07,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:24:07,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-29 06:24:07,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 428 transitions, 7459 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:07,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:24:07,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-29 06:24:07,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:24:08,467 INFO L124 PetriNetUnfolderBase]: 1071/2562 cut-off events. [2023-11-29 06:24:08,467 INFO L125 PetriNetUnfolderBase]: For 33958/34182 co-relation queries the response was YES. [2023-11-29 06:24:08,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14764 conditions, 2562 events. 1071/2562 cut-off events. For 33958/34182 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16676 event pairs, 240 based on Foata normal form. 138/2698 useless extension candidates. Maximal degree in co-relation 14572. Up to 1539 conditions per place. [2023-11-29 06:24:08,486 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 460 selfloop transitions, 21 changer transitions 0/496 dead transitions. [2023-11-29 06:24:08,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 496 transitions, 9199 flow [2023-11-29 06:24:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:24:08,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:24:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2023-11-29 06:24:08,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2023-11-29 06:24:08,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 99 transitions. [2023-11-29 06:24:08,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 99 transitions. [2023-11-29 06:24:08,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:24:08,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 99 transitions. [2023-11-29 06:24:08,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:08,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:08,487 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:08,487 INFO L175 Difference]: Start difference. First operand has 237 places, 428 transitions, 7459 flow. Second operand 4 states and 99 transitions. [2023-11-29 06:24:08,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 496 transitions, 9199 flow [2023-11-29 06:24:08,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 496 transitions, 9099 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 06:24:08,599 INFO L231 Difference]: Finished difference. Result has 237 places, 428 transitions, 7469 flow [2023-11-29 06:24:08,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7408, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7469, PETRI_PLACES=237, PETRI_TRANSITIONS=428} [2023-11-29 06:24:08,600 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 198 predicate places. [2023-11-29 06:24:08,600 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 428 transitions, 7469 flow [2023-11-29 06:24:08,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:08,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:24:08,600 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:08,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 06:24:08,601 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:24:08,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1623534852, now seen corresponding path program 1 times [2023-11-29 06:24:08,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:08,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862949667] [2023-11-29 06:24:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:08,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:09,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:09,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862949667] [2023-11-29 06:24:09,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862949667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:09,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959429638] [2023-11-29 06:24:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:09,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:09,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:09,261 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:09,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:24:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:09,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 06:24:09,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:09,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:24:10,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:24:10,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:24:10,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 06:24:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:10,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:23,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 166 [2023-11-29 06:24:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:24,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959429638] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:24,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:24,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 33 [2023-11-29 06:24:24,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398915929] [2023-11-29 06:24:24,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:24,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 06:24:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:24,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 06:24:24,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=990, Unknown=3, NotChecked=0, Total=1122 [2023-11-29 06:24:28,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:24:32,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:24:36,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:24:36,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2023-11-29 06:24:36,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 428 transitions, 7469 flow. Second operand has 34 states, 34 states have (on average 9.176470588235293) internal successors, (312), 34 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:36,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:24:36,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2023-11-29 06:24:36,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:24:44,127 INFO L124 PetriNetUnfolderBase]: 3498/6991 cut-off events. [2023-11-29 06:24:44,127 INFO L125 PetriNetUnfolderBase]: For 80967/80967 co-relation queries the response was YES. [2023-11-29 06:24:44,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38480 conditions, 6991 events. 3498/6991 cut-off events. For 80967/80967 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 47780 event pairs, 363 based on Foata normal form. 65/7053 useless extension candidates. Maximal degree in co-relation 38288. Up to 1355 conditions per place. [2023-11-29 06:24:44,194 INFO L140 encePairwiseOnDemand]: 21/39 looper letters, 634 selfloop transitions, 732 changer transitions 0/1368 dead transitions. [2023-11-29 06:24:44,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1368 transitions, 22247 flow [2023-11-29 06:24:44,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-29 06:24:44,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2023-11-29 06:24:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 1074 transitions. [2023-11-29 06:24:44,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34423076923076923 [2023-11-29 06:24:44,198 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 1074 transitions. [2023-11-29 06:24:44,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 1074 transitions. [2023-11-29 06:24:44,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:24:44,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 1074 transitions. [2023-11-29 06:24:44,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 13.425) internal successors, (1074), 80 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:44,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 39.0) internal successors, (3159), 81 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:44,207 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 39.0) internal successors, (3159), 81 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:44,207 INFO L175 Difference]: Start difference. First operand has 237 places, 428 transitions, 7469 flow. Second operand 80 states and 1074 transitions. [2023-11-29 06:24:44,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1368 transitions, 22247 flow [2023-11-29 06:24:44,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1368 transitions, 21976 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:24:44,653 INFO L231 Difference]: Finished difference. Result has 360 places, 935 transitions, 19061 flow [2023-11-29 06:24:44,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7438, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=19061, PETRI_PLACES=360, PETRI_TRANSITIONS=935} [2023-11-29 06:24:44,654 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 321 predicate places. [2023-11-29 06:24:44,654 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 935 transitions, 19061 flow [2023-11-29 06:24:44,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.176470588235293) internal successors, (312), 34 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:44,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:24:44,654 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:44,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:24:44,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 06:24:44,855 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:24:44,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:44,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1439520766, now seen corresponding path program 1 times [2023-11-29 06:24:44,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:44,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7504331] [2023-11-29 06:24:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:44,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7504331] [2023-11-29 06:24:45,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7504331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152382756] [2023-11-29 06:24:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:45,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:45,643 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:45,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:24:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:45,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 06:24:45,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:45,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-29 06:24:46,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-29 06:24:46,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-11-29 06:24:46,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 06:24:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:46,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:24:47,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152382756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:47,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:47,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 33 [2023-11-29 06:24:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073877919] [2023-11-29 06:24:47,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:47,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 06:24:47,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:47,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 06:24:47,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 06:24:48,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2023-11-29 06:24:48,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 935 transitions, 19061 flow. Second operand has 35 states, 35 states have (on average 10.942857142857143) internal successors, (383), 35 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) [2023-11-29 06:24:48,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:24:48,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2023-11-29 06:24:48,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:25:09,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:25:23,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:25:40,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:25:45,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:25:50,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:26:04,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:26:10,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:26:19,119 INFO L124 PetriNetUnfolderBase]: 4712/10107 cut-off events. [2023-11-29 06:26:19,119 INFO L125 PetriNetUnfolderBase]: For 215964/215973 co-relation queries the response was YES. [2023-11-29 06:26:19,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72772 conditions, 10107 events. 4712/10107 cut-off events. For 215964/215973 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 81441 event pairs, 504 based on Foata normal form. 128/10215 useless extension candidates. Maximal degree in co-relation 72532. Up to 2020 conditions per place. [2023-11-29 06:26:19,301 INFO L140 encePairwiseOnDemand]: 22/39 looper letters, 761 selfloop transitions, 1405 changer transitions 0/2179 dead transitions. [2023-11-29 06:26:19,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 2179 transitions, 42744 flow [2023-11-29 06:26:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-11-29 06:26:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2023-11-29 06:26:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 1560 transitions. [2023-11-29 06:26:19,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2023-11-29 06:26:19,305 INFO L72 ComplementDD]: Start complementDD. Operand 105 states and 1560 transitions. [2023-11-29 06:26:19,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 1560 transitions. [2023-11-29 06:26:19,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:26:19,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 105 states and 1560 transitions. [2023-11-29 06:26:19,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 106 states, 105 states have (on average 14.857142857142858) internal successors, (1560), 105 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:26:19,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 106 states, 106 states have (on average 39.0) internal successors, (4134), 106 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:26:19,312 INFO L81 ComplementDD]: Finished complementDD. Result has 106 states, 106 states have (on average 39.0) internal successors, (4134), 106 states have internal predecessors, (4134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:26:19,312 INFO L175 Difference]: Start difference. First operand has 360 places, 935 transitions, 19061 flow. Second operand 105 states and 1560 transitions. [2023-11-29 06:26:19,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 2179 transitions, 42744 flow [2023-11-29 06:26:20,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 2179 transitions, 41461 flow, removed 616 selfloop flow, removed 6 redundant places. [2023-11-29 06:26:20,695 INFO L231 Difference]: Finished difference. Result has 496 places, 1702 transitions, 37327 flow [2023-11-29 06:26:20,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18331, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=714, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=105, PETRI_FLOW=37327, PETRI_PLACES=496, PETRI_TRANSITIONS=1702} [2023-11-29 06:26:20,696 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 457 predicate places. [2023-11-29 06:26:20,696 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 1702 transitions, 37327 flow [2023-11-29 06:26:20,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.942857142857143) internal successors, (383), 35 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) [2023-11-29 06:26:20,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:26:20,696 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:26:20,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:26:20,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 06:26:20,897 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:26:20,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:26:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1956205473, now seen corresponding path program 1 times [2023-11-29 06:26:20,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:26:20,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782669481] [2023-11-29 06:26:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:20,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:26:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:26:21,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:26:21,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782669481] [2023-11-29 06:26:21,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782669481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:26:21,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762037755] [2023-11-29 06:26:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:26:21,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:26:21,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:26:21,862 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:26:21,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:26:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:26:21,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 06:26:21,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:26:21,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-29 06:26:22,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-29 06:26:22,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-11-29 06:26:22,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 06:26:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:26:23,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:26:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:26:29,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762037755] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:26:29,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:26:29,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 32 [2023-11-29 06:26:29,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288731073] [2023-11-29 06:26:29,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:26:29,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 06:26:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:26:29,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 06:26:29,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 06:26:29,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2023-11-29 06:26:29,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1702 transitions, 37327 flow. Second operand has 34 states, 34 states have (on average 11.0) internal successors, (374), 34 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:26:29,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:26:29,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2023-11-29 06:26:29,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:26:37,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:26:54,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:26:55,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:26:58,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:27:23,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:27:37,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 06:27:56,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:28:18,463 INFO L124 PetriNetUnfolderBase]: 7374/15610 cut-off events. [2023-11-29 06:28:18,463 INFO L125 PetriNetUnfolderBase]: For 472970/473068 co-relation queries the response was YES. [2023-11-29 06:28:18,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126972 conditions, 15610 events. 7374/15610 cut-off events. For 472970/473068 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 136279 event pairs, 466 based on Foata normal form. 451/16044 useless extension candidates. Maximal degree in co-relation 126696. Up to 2485 conditions per place. [2023-11-29 06:28:18,872 INFO L140 encePairwiseOnDemand]: 22/39 looper letters, 1238 selfloop transitions, 2595 changer transitions 0/3856 dead transitions. [2023-11-29 06:28:18,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 3856 transitions, 83241 flow [2023-11-29 06:28:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2023-11-29 06:28:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2023-11-29 06:28:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 2503 transitions. [2023-11-29 06:28:18,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3913383364602877 [2023-11-29 06:28:18,877 INFO L72 ComplementDD]: Start complementDD. Operand 164 states and 2503 transitions. [2023-11-29 06:28:18,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 2503 transitions. [2023-11-29 06:28:18,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:18,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 164 states and 2503 transitions. [2023-11-29 06:28:18,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 165 states, 164 states have (on average 15.262195121951219) internal successors, (2503), 164 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:18,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 165 states, 165 states have (on average 39.0) internal successors, (6435), 165 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:18,891 INFO L81 ComplementDD]: Finished complementDD. Result has 165 states, 165 states have (on average 39.0) internal successors, (6435), 165 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:18,891 INFO L175 Difference]: Start difference. First operand has 496 places, 1702 transitions, 37327 flow. Second operand 164 states and 2503 transitions. [2023-11-29 06:28:18,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 3856 transitions, 83241 flow [2023-11-29 06:28:24,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 3856 transitions, 77087 flow, removed 2945 selfloop flow, removed 2 redundant places. [2023-11-29 06:28:24,584 INFO L231 Difference]: Finished difference. Result has 697 places, 3001 transitions, 64983 flow [2023-11-29 06:28:24,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=33862, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=164, PETRI_FLOW=64983, PETRI_PLACES=697, PETRI_TRANSITIONS=3001} [2023-11-29 06:28:24,586 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 658 predicate places. [2023-11-29 06:28:24,586 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 3001 transitions, 64983 flow [2023-11-29 06:28:24,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 11.0) internal successors, (374), 34 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:24,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:24,586 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:24,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:28:24,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 06:28:24,787 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:28:24,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash -882513210, now seen corresponding path program 2 times [2023-11-29 06:28:24,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:24,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429468952] [2023-11-29 06:28:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:24,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:28:25,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429468952] [2023-11-29 06:28:25,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429468952] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307098800] [2023-11-29 06:28:25,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:28:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:25,906 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:25,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:28:26,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:28:26,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:28:26,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:28:26,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:26,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:28:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-29 06:28:26,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:26,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307098800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:26,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:26,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 20 [2023-11-29 06:28:26,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580675410] [2023-11-29 06:28:26,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:26,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:28:26,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:28:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:28:26,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2023-11-29 06:28:26,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 3001 transitions, 64983 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:26,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:26,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2023-11-29 06:28:26,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:39,897 INFO L124 PetriNetUnfolderBase]: 6021/14040 cut-off events. [2023-11-29 06:28:39,898 INFO L125 PetriNetUnfolderBase]: For 516664/516943 co-relation queries the response was YES. [2023-11-29 06:28:40,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123432 conditions, 14040 events. 6021/14040 cut-off events. For 516664/516943 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 132505 event pairs, 1047 based on Foata normal form. 168/14109 useless extension candidates. Maximal degree in co-relation 123114. Up to 6730 conditions per place. [2023-11-29 06:28:40,766 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 2896 selfloop transitions, 454 changer transitions 0/3428 dead transitions. [2023-11-29 06:28:40,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 704 places, 3428 transitions, 80628 flow [2023-11-29 06:28:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:28:40,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:28:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2023-11-29 06:28:40,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2023-11-29 06:28:40,767 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 196 transitions. [2023-11-29 06:28:40,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 196 transitions. [2023-11-29 06:28:40,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:40,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 196 transitions. [2023-11-29 06:28:40,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.5) internal successors, (196), 8 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:40,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:40,769 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:40,769 INFO L175 Difference]: Start difference. First operand has 697 places, 3001 transitions, 64983 flow. Second operand 8 states and 196 transitions. [2023-11-29 06:28:40,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 704 places, 3428 transitions, 80628 flow [2023-11-29 06:28:48,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 686 places, 3428 transitions, 76085 flow, removed 1758 selfloop flow, removed 18 redundant places. [2023-11-29 06:28:48,662 INFO L231 Difference]: Finished difference. Result has 690 places, 3012 transitions, 62056 flow [2023-11-29 06:28:48,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=60757, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=62056, PETRI_PLACES=690, PETRI_TRANSITIONS=3012} [2023-11-29 06:28:48,664 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 651 predicate places. [2023-11-29 06:28:48,665 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 3012 transitions, 62056 flow [2023-11-29 06:28:48,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:48,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:48,665 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:48,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 06:28:48,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 06:28:48,866 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:28:48,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:48,866 INFO L85 PathProgramCache]: Analyzing trace with hash -337393932, now seen corresponding path program 3 times [2023-11-29 06:28:48,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:48,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126671485] [2023-11-29 06:28:48,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:48,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:28:49,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:49,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126671485] [2023-11-29 06:28:49,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126671485] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:49,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56504733] [2023-11-29 06:28:49,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:28:49,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:49,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:49,476 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:49,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:28:49,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:28:49,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:28:49,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 06:28:49,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:49,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-29 06:28:49,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-29 06:28:50,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-11-29 06:28:50,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 06:28:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:28:50,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:28:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:28:51,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56504733] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:28:51,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:28:51,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 32 [2023-11-29 06:28:51,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281037456] [2023-11-29 06:28:51,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:28:51,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 06:28:51,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:51,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 06:28:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 06:28:51,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2023-11-29 06:28:51,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 3012 transitions, 62056 flow. Second operand has 34 states, 34 states have (on average 10.088235294117647) internal successors, (343), 34 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:51,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:51,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2023-11-29 06:28:51,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:29:34,233 INFO L124 PetriNetUnfolderBase]: 10404/21433 cut-off events. [2023-11-29 06:29:34,233 INFO L125 PetriNetUnfolderBase]: For 831035/831037 co-relation queries the response was YES. [2023-11-29 06:29:34,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187870 conditions, 21433 events. 10404/21433 cut-off events. For 831035/831037 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 190037 event pairs, 1538 based on Foata normal form. 197/21630 useless extension candidates. Maximal degree in co-relation 187549. Up to 7693 conditions per place. [2023-11-29 06:29:35,030 INFO L140 encePairwiseOnDemand]: 22/39 looper letters, 2125 selfloop transitions, 2169 changer transitions 0/4297 dead transitions. [2023-11-29 06:29:35,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 792 places, 4297 transitions, 90961 flow [2023-11-29 06:29:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-11-29 06:29:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2023-11-29 06:29:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 1516 transitions. [2023-11-29 06:29:35,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773960667164551 [2023-11-29 06:29:35,034 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 1516 transitions. [2023-11-29 06:29:35,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 1516 transitions. [2023-11-29 06:29:35,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:29:35,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 1516 transitions. [2023-11-29 06:29:35,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 14.718446601941748) internal successors, (1516), 103 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:35,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 39.0) internal successors, (4056), 104 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:35,046 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 39.0) internal successors, (4056), 104 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:35,046 INFO L175 Difference]: Start difference. First operand has 690 places, 3012 transitions, 62056 flow. Second operand 103 states and 1516 transitions. [2023-11-29 06:29:35,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 792 places, 4297 transitions, 90961 flow [2023-11-29 06:29:46,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 4297 transitions, 90142 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-29 06:29:46,847 INFO L231 Difference]: Finished difference. Result has 835 places, 3450 transitions, 77388 flow [2023-11-29 06:29:46,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=61352, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1772, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=77388, PETRI_PLACES=835, PETRI_TRANSITIONS=3450} [2023-11-29 06:29:46,850 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 796 predicate places. [2023-11-29 06:29:46,850 INFO L495 AbstractCegarLoop]: Abstraction has has 835 places, 3450 transitions, 77388 flow [2023-11-29 06:29:46,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.088235294117647) internal successors, (343), 34 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:46,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:29:46,850 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:29:46,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:29:47,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 06:29:47,051 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-29 06:29:47,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1449218075, now seen corresponding path program 1 times [2023-11-29 06:29:47,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:47,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246288970] [2023-11-29 06:29:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:47,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:29:47,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:47,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246288970] [2023-11-29 06:29:47,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246288970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:29:47,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328511572] [2023-11-29 06:29:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:47,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:29:47,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:29:47,652 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:29:47,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f583e2-4a2f-4582-abcf-705865c9e314/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:29:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:47,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 06:29:47,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:29:48,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:29:48,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:29:48,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:29:48,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 06:29:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:29:48,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:30:10,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 166 [2023-11-29 06:30:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:30:11,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328511572] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:30:11,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:30:11,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 33 [2023-11-29 06:30:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640556084] [2023-11-29 06:30:11,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:30:11,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 06:30:11,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:11,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 06:30:11,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=990, Unknown=4, NotChecked=0, Total=1122 [2023-11-29 06:30:15,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:30:19,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:30:23,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:30:27,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:30:31,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:30:31,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2023-11-29 06:30:31,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 835 places, 3450 transitions, 77388 flow. Second operand has 34 states, 34 states have (on average 9.176470588235293) internal successors, (312), 34 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:31,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:30:31,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2023-11-29 06:30:31,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand