./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 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_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX --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 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:35:33,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:35:33,776 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 16:35:33,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:35:33,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:35:33,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:35:33,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:35:33,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:35:33,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:35:33,804 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:35:33,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:35:33,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:35:33,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:35:33,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:35:33,806 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:35:33,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:35:33,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:35:33,808 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:35:33,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:35:33,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:35:33,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:35:33,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:35:33,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:35:33,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:35:33,811 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:35:33,811 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:35:33,812 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:35:33,812 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:35:33,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:35:33,813 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:35:33,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:35:33,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:35:33,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:35:33,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:35:33,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:33,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:35:33,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:35:33,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:35:33,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:35:33,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:35:33,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:35:33,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:35:33,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:35:33,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:35:33,818 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_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2024-11-08 16:35:34,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:35:34,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:35:34,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:35:34,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:35:34,074 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:35:34,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c Unable to find full path for "g++" [2024-11-08 16:35:36,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:35:36,338 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:35:36,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-11-08 16:35:36,346 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/data/d98480f0b/1f80462ce6404d2088f2797e745821d1/FLAG56bcfbf9c [2024-11-08 16:35:36,692 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/data/d98480f0b/1f80462ce6404d2088f2797e745821d1 [2024-11-08 16:35:36,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:35:36,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:35:36,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:36,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:35:36,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:35:36,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:36" (1/1) ... [2024-11-08 16:35:36,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202026e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:36, skipping insertion in model container [2024-11-08 16:35:36,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:36" (1/1) ... [2024-11-08 16:35:36,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:35:36,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:36,990 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:35:37,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:37,032 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:35:37,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37 WrapperNode [2024-11-08 16:35:37,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:37,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:37,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:35:37,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:35:37,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,078 INFO L138 Inliner]: procedures = 25, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 165 [2024-11-08 16:35:37,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:37,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:35:37,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:35:37,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:35:37,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,110 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 16:35:37,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,118 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:35:37,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:35:37,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:35:37,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:35:37,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:37,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:37,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:35:37,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:35:37,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:35:37,216 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:35:37,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:35:37,216 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:35:37,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:35:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:35:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:35:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:35:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:35:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:35:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:35:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:35:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:35:37,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:35:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:35:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:35:37,223 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:35:37,372 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:35:37,375 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:35:37,843 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:35:37,844 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:35:38,358 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:35:38,360 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:35:38,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:38 BoogieIcfgContainer [2024-11-08 16:35:38,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:35:38,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:35:38,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:35:38,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:35:38,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:35:36" (1/3) ... [2024-11-08 16:35:38,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5295459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:38, skipping insertion in model container [2024-11-08 16:35:38,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37" (2/3) ... [2024-11-08 16:35:38,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5295459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:38, skipping insertion in model container [2024-11-08 16:35:38,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:38" (3/3) ... [2024-11-08 16:35:38,376 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2024-11-08 16:35:38,395 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:35:38,395 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-08 16:35:38,396 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:35:38,538 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:35:38,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 55 transitions, 124 flow [2024-11-08 16:35:38,634 INFO L124 PetriNetUnfolderBase]: 6/53 cut-off events. [2024-11-08 16:35:38,634 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:35:38,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 6/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 142 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-08 16:35:38,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 55 transitions, 124 flow [2024-11-08 16:35:38,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 111 flow [2024-11-08 16:35:38,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:35:38,671 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@51ff0152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:35:38,672 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-08 16:35:38,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:35:38,676 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-08 16:35:38,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:35:38,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:38,677 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:35:38,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:38,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:38,686 INFO L85 PathProgramCache]: Analyzing trace with hash 17934685, now seen corresponding path program 1 times [2024-11-08 16:35:38,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:38,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149153891] [2024-11-08 16:35:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:38,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:39,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149153891] [2024-11-08 16:35:39,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149153891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:39,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:39,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:35:39,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899468219] [2024-11-08 16:35:39,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:39,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:35:39,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:35:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:35:39,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-11-08 16:35:39,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:39,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:39,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-11-08 16:35:39,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:39,544 INFO L124 PetriNetUnfolderBase]: 230/458 cut-off events. [2024-11-08 16:35:39,545 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-08 16:35:39,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 458 events. 230/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 2731 event pairs, 182 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 792. Up to 377 conditions per place. [2024-11-08 16:35:39,554 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 26 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-08 16:35:39,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 169 flow [2024-11-08 16:35:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:35:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:35:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-08 16:35:39,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5636363636363636 [2024-11-08 16:35:39,574 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 111 flow. Second operand 4 states and 124 transitions. [2024-11-08 16:35:39,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 169 flow [2024-11-08 16:35:39,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:35:39,586 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 127 flow [2024-11-08 16:35:39,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2024-11-08 16:35:39,595 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-08 16:35:39,595 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 127 flow [2024-11-08 16:35:39,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:39,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:39,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:39,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:35:39,597 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:39,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1241608228, now seen corresponding path program 1 times [2024-11-08 16:35:39,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601552476] [2024-11-08 16:35:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:39,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:39,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601552476] [2024-11-08 16:35:39,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601552476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:39,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:39,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:35:39,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902397068] [2024-11-08 16:35:39,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:39,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:35:39,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:39,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:35:39,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:35:39,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-08 16:35:39,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:39,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:39,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-08 16:35:39,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:40,193 INFO L124 PetriNetUnfolderBase]: 366/771 cut-off events. [2024-11-08 16:35:40,194 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 16:35:40,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 771 events. 366/771 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4525 event pairs, 268 based on Foata normal form. 18/529 useless extension candidates. Maximal degree in co-relation 1103. Up to 481 conditions per place. [2024-11-08 16:35:40,205 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 51 selfloop transitions, 7 changer transitions 2/78 dead transitions. [2024-11-08 16:35:40,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 309 flow [2024-11-08 16:35:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:35:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:35:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-11-08 16:35:40,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5484848484848485 [2024-11-08 16:35:40,211 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 127 flow. Second operand 6 states and 181 transitions. [2024-11-08 16:35:40,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 309 flow [2024-11-08 16:35:40,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:35:40,215 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 165 flow [2024-11-08 16:35:40,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-11-08 16:35:40,217 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-08 16:35:40,218 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 165 flow [2024-11-08 16:35:40,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:40,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:40,219 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 16:35:40,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:35:40,220 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:40,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1682922596, now seen corresponding path program 1 times [2024-11-08 16:35:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:40,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149107490] [2024-11-08 16:35:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:40,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:40,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:40,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149107490] [2024-11-08 16:35:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149107490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:40,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350320666] [2024-11-08 16:35:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:40,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:40,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:40,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:40,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:35:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:40,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:35:40,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:40,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:35:40,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350320666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:40,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:35:40,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 16:35:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720133760] [2024-11-08 16:35:40,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:40,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:35:40,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:40,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:35:40,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:35:40,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-11-08 16:35:40,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:40,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:40,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-11-08 16:35:40,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:40,885 INFO L124 PetriNetUnfolderBase]: 311/694 cut-off events. [2024-11-08 16:35:40,885 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-11-08 16:35:40,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 694 events. 311/694 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4233 event pairs, 244 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 979. Up to 503 conditions per place. [2024-11-08 16:35:40,891 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 24 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-11-08 16:35:40,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 223 flow [2024-11-08 16:35:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:35:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:35:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-11-08 16:35:40,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-11-08 16:35:40,895 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 165 flow. Second operand 6 states and 162 transitions. [2024-11-08 16:35:40,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 223 flow [2024-11-08 16:35:40,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:35:40,898 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 173 flow [2024-11-08 16:35:40,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-11-08 16:35:40,900 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-11-08 16:35:40,900 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 173 flow [2024-11-08 16:35:40,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:40,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:40,900 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 16:35:40,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 16:35:41,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-08 16:35:41,102 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:41,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash 630993528, now seen corresponding path program 1 times [2024-11-08 16:35:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:41,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704939816] [2024-11-08 16:35:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:41,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:41,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704939816] [2024-11-08 16:35:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704939816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087046399] [2024-11-08 16:35:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:41,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:41,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:41,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:41,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:35:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:41,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:35:41,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:41,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:41,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087046399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:41,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:41,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 16:35:41,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207644234] [2024-11-08 16:35:41,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:41,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:35:41,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:35:41,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:35:41,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-11-08 16:35:41,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 173 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:41,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:41,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-11-08 16:35:41,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:41,854 INFO L124 PetriNetUnfolderBase]: 317/715 cut-off events. [2024-11-08 16:35:41,854 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-11-08 16:35:41,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 715 events. 317/715 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4428 event pairs, 244 based on Foata normal form. 3/483 useless extension candidates. Maximal degree in co-relation 975. Up to 510 conditions per place. [2024-11-08 16:35:41,860 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 27 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-11-08 16:35:41,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 62 transitions, 307 flow [2024-11-08 16:35:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:35:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:35:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-11-08 16:35:41,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47454545454545455 [2024-11-08 16:35:41,865 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 173 flow. Second operand 10 states and 261 transitions. [2024-11-08 16:35:41,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 62 transitions, 307 flow [2024-11-08 16:35:41,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 277 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-08 16:35:41,869 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 241 flow [2024-11-08 16:35:41,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=241, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-11-08 16:35:41,870 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-08 16:35:41,870 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 241 flow [2024-11-08 16:35:41,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:41,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:41,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:41,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:35:42,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:42,072 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:42,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1067103402, now seen corresponding path program 1 times [2024-11-08 16:35:42,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:42,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858061677] [2024-11-08 16:35:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:42,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:42,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858061677] [2024-11-08 16:35:42,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858061677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:42,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:42,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:35:42,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486664356] [2024-11-08 16:35:42,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:42,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:35:42,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:42,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:35:42,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:35:42,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-08 16:35:42,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:42,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:42,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-08 16:35:42,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:42,518 INFO L124 PetriNetUnfolderBase]: 317/661 cut-off events. [2024-11-08 16:35:42,522 INFO L125 PetriNetUnfolderBase]: For 172/191 co-relation queries the response was YES. [2024-11-08 16:35:42,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1364 conditions, 661 events. 317/661 cut-off events. For 172/191 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 3909 event pairs, 242 based on Foata normal form. 7/484 useless extension candidates. Maximal degree in co-relation 1318. Up to 484 conditions per place. [2024-11-08 16:35:42,529 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 38 selfloop transitions, 2 changer transitions 16/73 dead transitions. [2024-11-08 16:35:42,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 388 flow [2024-11-08 16:35:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:35:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:35:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-11-08 16:35:42,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-11-08 16:35:42,532 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 241 flow. Second operand 6 states and 168 transitions. [2024-11-08 16:35:42,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 388 flow [2024-11-08 16:35:42,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 377 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-08 16:35:42,539 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 211 flow [2024-11-08 16:35:42,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2024-11-08 16:35:42,541 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-08 16:35:42,542 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 211 flow [2024-11-08 16:35:42,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:42,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:42,543 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:42,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:35:42,544 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:42,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1584379988, now seen corresponding path program 1 times [2024-11-08 16:35:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953015985] [2024-11-08 16:35:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:42,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:42,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:42,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953015985] [2024-11-08 16:35:42,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953015985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:42,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188102464] [2024-11-08 16:35:42,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:42,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:42,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:42,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:42,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:35:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:35:43,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:43,077 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 [2024-11-08 16:35:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:43,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:43,221 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 12 [2024-11-08 16:35:43,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 16:35:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:43,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188102464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:43,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:43,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-08 16:35:43,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270574065] [2024-11-08 16:35:43,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:43,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:35:43,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:43,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:35:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:35:43,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-11-08 16:35:43,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 211 flow. Second operand has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:43,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:43,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-11-08 16:35:43,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:43,721 INFO L124 PetriNetUnfolderBase]: 401/929 cut-off events. [2024-11-08 16:35:43,721 INFO L125 PetriNetUnfolderBase]: For 173/205 co-relation queries the response was YES. [2024-11-08 16:35:43,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 929 events. 401/929 cut-off events. For 173/205 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5865 event pairs, 86 based on Foata normal form. 0/617 useless extension candidates. Maximal degree in co-relation 1742. Up to 220 conditions per place. [2024-11-08 16:35:43,729 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 49 selfloop transitions, 15 changer transitions 0/85 dead transitions. [2024-11-08 16:35:43,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 409 flow [2024-11-08 16:35:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:35:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:35:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2024-11-08 16:35:43,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5636363636363636 [2024-11-08 16:35:43,733 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 211 flow. Second operand 8 states and 248 transitions. [2024-11-08 16:35:43,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 85 transitions, 409 flow [2024-11-08 16:35:43,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 381 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-08 16:35:43,737 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 262 flow [2024-11-08 16:35:43,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=262, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-08 16:35:43,739 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-11-08 16:35:43,740 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 262 flow [2024-11-08 16:35:43,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:43,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:43,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:43,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:35:43,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 16:35:43,941 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:43,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1584379986, now seen corresponding path program 1 times [2024-11-08 16:35:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:43,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656603902] [2024-11-08 16:35:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:43,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:44,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:44,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656603902] [2024-11-08 16:35:44,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656603902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:44,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:44,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:35:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715304462] [2024-11-08 16:35:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:44,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:44,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:44,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-11-08 16:35:44,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:44,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:44,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-11-08 16:35:44,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:44,320 INFO L124 PetriNetUnfolderBase]: 441/1002 cut-off events. [2024-11-08 16:35:44,320 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-11-08 16:35:44,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 1002 events. 441/1002 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6494 event pairs, 119 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 2166. Up to 579 conditions per place. [2024-11-08 16:35:44,327 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 52 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-08 16:35:44,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 413 flow [2024-11-08 16:35:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:35:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-08 16:35:44,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2024-11-08 16:35:44,329 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 262 flow. Second operand 3 states and 114 transitions. [2024-11-08 16:35:44,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 413 flow [2024-11-08 16:35:44,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 403 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 16:35:44,332 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 279 flow [2024-11-08 16:35:44,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=3, PETRI_FLOW=279, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-08 16:35:44,333 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-11-08 16:35:44,333 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 279 flow [2024-11-08 16:35:44,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:44,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:44,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:44,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:35:44,334 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:44,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1584379989, now seen corresponding path program 1 times [2024-11-08 16:35:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:44,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48485143] [2024-11-08 16:35:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:44,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:44,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48485143] [2024-11-08 16:35:44,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48485143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:44,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518676225] [2024-11-08 16:35:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:44,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:44,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:44,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:44,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:35:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:44,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:35:44,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:44,695 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 [2024-11-08 16:35:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:44,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:44,848 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 16 treesize of output 14 [2024-11-08 16:35:44,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-08 16:35:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:44,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518676225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:44,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:44,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 16:35:44,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706381707] [2024-11-08 16:35:44,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:44,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:35:44,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:44,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:35:44,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:35:44,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-11-08 16:35:44,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 279 flow. Second operand has 11 states, 11 states have (on average 25.454545454545453) internal successors, (280), 11 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:44,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:44,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-11-08 16:35:44,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:45,355 INFO L124 PetriNetUnfolderBase]: 401/858 cut-off events. [2024-11-08 16:35:45,355 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2024-11-08 16:35:45,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 858 events. 401/858 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5231 event pairs, 88 based on Foata normal form. 26/601 useless extension candidates. Maximal degree in co-relation 2085. Up to 262 conditions per place. [2024-11-08 16:35:45,363 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 51 selfloop transitions, 15 changer transitions 0/87 dead transitions. [2024-11-08 16:35:45,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 87 transitions, 472 flow [2024-11-08 16:35:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:35:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:35:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-11-08 16:35:45,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5613636363636364 [2024-11-08 16:35:45,365 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 279 flow. Second operand 8 states and 247 transitions. [2024-11-08 16:35:45,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 87 transitions, 472 flow [2024-11-08 16:35:45,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 87 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:35:45,368 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 302 flow [2024-11-08 16:35:45,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-11-08 16:35:45,369 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-11-08 16:35:45,369 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 302 flow [2024-11-08 16:35:45,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 25.454545454545453) internal successors, (280), 11 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:45,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:45,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:45,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:35:45,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:45,574 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:45,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1872518429, now seen corresponding path program 1 times [2024-11-08 16:35:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:45,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642934927] [2024-11-08 16:35:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:45,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:45,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642934927] [2024-11-08 16:35:45,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642934927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717728702] [2024-11-08 16:35:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:45,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:45,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:45,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:45,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:35:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:45,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:35:45,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:45,937 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 [2024-11-08 16:35:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:46,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:46,070 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 16 treesize of output 14 [2024-11-08 16:35:46,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-08 16:35:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:46,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717728702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:46,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:46,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-08 16:35:46,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122477407] [2024-11-08 16:35:46,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:46,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:35:46,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:46,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:35:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:35:46,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-11-08 16:35:46,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 302 flow. Second operand has 10 states, 10 states have (on average 25.8) internal successors, (258), 10 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:46,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:46,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-11-08 16:35:46,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:46,606 INFO L124 PetriNetUnfolderBase]: 563/1230 cut-off events. [2024-11-08 16:35:46,606 INFO L125 PetriNetUnfolderBase]: For 1082/1082 co-relation queries the response was YES. [2024-11-08 16:35:46,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 1230 events. 563/1230 cut-off events. For 1082/1082 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8119 event pairs, 127 based on Foata normal form. 0/857 useless extension candidates. Maximal degree in co-relation 3083. Up to 335 conditions per place. [2024-11-08 16:35:46,618 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 65 selfloop transitions, 15 changer transitions 0/101 dead transitions. [2024-11-08 16:35:46,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 666 flow [2024-11-08 16:35:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:35:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:35:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-11-08 16:35:46,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5590909090909091 [2024-11-08 16:35:46,621 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 302 flow. Second operand 8 states and 246 transitions. [2024-11-08 16:35:46,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 666 flow [2024-11-08 16:35:46,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 647 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 16:35:46,626 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 364 flow [2024-11-08 16:35:46,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2024-11-08 16:35:46,628 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-11-08 16:35:46,629 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 364 flow [2024-11-08 16:35:46,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.8) internal successors, (258), 10 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:46,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:46,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:46,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:35:46,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:46,831 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:46,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:46,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2124244369, now seen corresponding path program 1 times [2024-11-08 16:35:46,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995970751] [2024-11-08 16:35:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:46,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:46,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:46,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995970751] [2024-11-08 16:35:46,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995970751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:46,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:46,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:35:46,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674031212] [2024-11-08 16:35:46,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:46,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:35:46,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:46,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:35:46,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:35:46,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-08 16:35:46,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:46,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:46,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-08 16:35:46,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:47,299 INFO L124 PetriNetUnfolderBase]: 766/1598 cut-off events. [2024-11-08 16:35:47,300 INFO L125 PetriNetUnfolderBase]: For 1581/1581 co-relation queries the response was YES. [2024-11-08 16:35:47,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 1598 events. 766/1598 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10335 event pairs, 356 based on Foata normal form. 56/1260 useless extension candidates. Maximal degree in co-relation 4433. Up to 868 conditions per place. [2024-11-08 16:35:47,312 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 84 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2024-11-08 16:35:47,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 720 flow [2024-11-08 16:35:47,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:35:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:35:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-08 16:35:47,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-08 16:35:47,314 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 364 flow. Second operand 4 states and 142 transitions. [2024-11-08 16:35:47,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 720 flow [2024-11-08 16:35:47,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 106 transitions, 710 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 16:35:47,318 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 375 flow [2024-11-08 16:35:47,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=375, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-11-08 16:35:47,319 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-08 16:35:47,319 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 375 flow [2024-11-08 16:35:47,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:47,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:47,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:47,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:35:47,320 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:47,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1872518428, now seen corresponding path program 1 times [2024-11-08 16:35:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:47,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479425782] [2024-11-08 16:35:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:47,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:47,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479425782] [2024-11-08 16:35:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479425782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:47,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41876904] [2024-11-08 16:35:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:47,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:47,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:47,523 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:47,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:35:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:47,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:35:47,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:47,643 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 [2024-11-08 16:35:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:47,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:47,794 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 12 [2024-11-08 16:35:47,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 16:35:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41876904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:47,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 16:35:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861678492] [2024-11-08 16:35:47,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:47,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:35:47,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:35:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:35:47,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-11-08 16:35:47,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 375 flow. Second operand has 11 states, 11 states have (on average 25.818181818181817) internal successors, (284), 11 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:47,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:47,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-11-08 16:35:47,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:48,354 INFO L124 PetriNetUnfolderBase]: 542/1231 cut-off events. [2024-11-08 16:35:48,354 INFO L125 PetriNetUnfolderBase]: For 1680/1680 co-relation queries the response was YES. [2024-11-08 16:35:48,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 1231 events. 542/1231 cut-off events. For 1680/1680 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8055 event pairs, 127 based on Foata normal form. 24/920 useless extension candidates. Maximal degree in co-relation 3557. Up to 335 conditions per place. [2024-11-08 16:35:48,364 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 64 selfloop transitions, 15 changer transitions 0/101 dead transitions. [2024-11-08 16:35:48,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 727 flow [2024-11-08 16:35:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:35:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:35:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-11-08 16:35:48,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2024-11-08 16:35:48,367 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 375 flow. Second operand 8 states and 245 transitions. [2024-11-08 16:35:48,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 727 flow [2024-11-08 16:35:48,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 709 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:35:48,372 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 395 flow [2024-11-08 16:35:48,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=395, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-11-08 16:35:48,373 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-08 16:35:48,373 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 395 flow [2024-11-08 16:35:48,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 25.818181818181817) internal successors, (284), 11 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:48,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:48,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:48,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:35:48,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:48,578 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:48,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash -101063422, now seen corresponding path program 1 times [2024-11-08 16:35:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:48,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413799173] [2024-11-08 16:35:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:48,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:48,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413799173] [2024-11-08 16:35:48,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413799173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:48,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:48,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:35:48,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049146279] [2024-11-08 16:35:48,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:48,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:35:48,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:48,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:35:48,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:35:48,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-08 16:35:48,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:48,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:48,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-08 16:35:48,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:49,005 INFO L124 PetriNetUnfolderBase]: 686/1305 cut-off events. [2024-11-08 16:35:49,005 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-11-08 16:35:49,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 1305 events. 686/1305 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8192 event pairs, 330 based on Foata normal form. 50/1010 useless extension candidates. Maximal degree in co-relation 4271. Up to 795 conditions per place. [2024-11-08 16:35:49,016 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 79 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-08 16:35:49,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 102 transitions, 749 flow [2024-11-08 16:35:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:35:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:35:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-11-08 16:35:49,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-08 16:35:49,019 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 395 flow. Second operand 4 states and 140 transitions. [2024-11-08 16:35:49,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 102 transitions, 749 flow [2024-11-08 16:35:49,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 736 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 16:35:49,026 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 403 flow [2024-11-08 16:35:49,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=403, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-11-08 16:35:49,027 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-08 16:35:49,027 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 403 flow [2024-11-08 16:35:49,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:49,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:49,027 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:49,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:35:49,031 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:49,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash 583743126, now seen corresponding path program 1 times [2024-11-08 16:35:49,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:49,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276003700] [2024-11-08 16:35:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:49,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:49,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276003700] [2024-11-08 16:35:49,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276003700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:49,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:49,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:35:49,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181135057] [2024-11-08 16:35:49,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:49,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:49,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:49,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:49,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:49,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-11-08 16:35:49,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:49,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:49,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-11-08 16:35:49,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:49,363 INFO L124 PetriNetUnfolderBase]: 413/918 cut-off events. [2024-11-08 16:35:49,363 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2024-11-08 16:35:49,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 918 events. 413/918 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5396 event pairs, 274 based on Foata normal form. 0/735 useless extension candidates. Maximal degree in co-relation 2925. Up to 611 conditions per place. [2024-11-08 16:35:49,378 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 43 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2024-11-08 16:35:49,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 463 flow [2024-11-08 16:35:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:35:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-08 16:35:49,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2024-11-08 16:35:49,380 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 403 flow. Second operand 3 states and 97 transitions. [2024-11-08 16:35:49,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 463 flow [2024-11-08 16:35:49,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 67 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:35:49,386 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 371 flow [2024-11-08 16:35:49,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-11-08 16:35:49,387 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2024-11-08 16:35:49,388 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 371 flow [2024-11-08 16:35:49,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:49,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:49,388 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:49,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:35:49,389 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:49,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:49,389 INFO L85 PathProgramCache]: Analyzing trace with hash 583743127, now seen corresponding path program 1 times [2024-11-08 16:35:49,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:49,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190964812] [2024-11-08 16:35:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:49,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:49,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190964812] [2024-11-08 16:35:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190964812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:49,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:49,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:35:49,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544002472] [2024-11-08 16:35:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:49,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:49,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:49,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:49,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:49,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-11-08 16:35:49,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:49,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:49,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-11-08 16:35:49,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:49,696 INFO L124 PetriNetUnfolderBase]: 308/723 cut-off events. [2024-11-08 16:35:49,696 INFO L125 PetriNetUnfolderBase]: For 1337/1337 co-relation queries the response was YES. [2024-11-08 16:35:49,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 723 events. 308/723 cut-off events. For 1337/1337 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3952 event pairs, 187 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 2151. Up to 444 conditions per place. [2024-11-08 16:35:49,702 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 39 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2024-11-08 16:35:49,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 63 transitions, 423 flow [2024-11-08 16:35:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:35:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-08 16:35:49,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-11-08 16:35:49,704 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 371 flow. Second operand 3 states and 95 transitions. [2024-11-08 16:35:49,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 63 transitions, 423 flow [2024-11-08 16:35:49,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 63 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:35:49,708 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 344 flow [2024-11-08 16:35:49,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2024-11-08 16:35:49,709 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-11-08 16:35:49,709 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 344 flow [2024-11-08 16:35:49,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:49,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:49,710 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:49,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:35:49,710 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:49,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2138861690, now seen corresponding path program 1 times [2024-11-08 16:35:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:49,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716718851] [2024-11-08 16:35:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:49,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:49,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716718851] [2024-11-08 16:35:49,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716718851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:49,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737902286] [2024-11-08 16:35:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:49,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:49,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:49,865 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:49,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:35:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:49,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 16:35:49,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:50,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:50,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737902286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:50,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:50,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-08 16:35:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975276573] [2024-11-08 16:35:50,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:50,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 16:35:50,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:50,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 16:35:50,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-08 16:35:50,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:35:50,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 344 flow. Second operand has 20 states, 20 states have (on average 13.95) internal successors, (279), 20 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:50,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:50,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:35:50,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:51,215 INFO L124 PetriNetUnfolderBase]: 954/1869 cut-off events. [2024-11-08 16:35:51,216 INFO L125 PetriNetUnfolderBase]: For 3097/3097 co-relation queries the response was YES. [2024-11-08 16:35:51,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5798 conditions, 1869 events. 954/1869 cut-off events. For 3097/3097 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11017 event pairs, 448 based on Foata normal form. 0/1597 useless extension candidates. Maximal degree in co-relation 5774. Up to 814 conditions per place. [2024-11-08 16:35:51,231 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 113 selfloop transitions, 23 changer transitions 12/159 dead transitions. [2024-11-08 16:35:51,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 159 transitions, 1171 flow [2024-11-08 16:35:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 16:35:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 16:35:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 266 transitions. [2024-11-08 16:35:51,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37202797202797205 [2024-11-08 16:35:51,233 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 344 flow. Second operand 13 states and 266 transitions. [2024-11-08 16:35:51,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 159 transitions, 1171 flow [2024-11-08 16:35:51,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 159 transitions, 1170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:35:51,240 INFO L231 Difference]: Finished difference. Result has 98 places, 74 transitions, 480 flow [2024-11-08 16:35:51,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=480, PETRI_PLACES=98, PETRI_TRANSITIONS=74} [2024-11-08 16:35:51,240 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-11-08 16:35:51,241 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 74 transitions, 480 flow [2024-11-08 16:35:51,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.95) internal successors, (279), 20 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:51,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:51,241 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:51,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:35:51,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 16:35:51,442 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:51,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash -238460170, now seen corresponding path program 1 times [2024-11-08 16:35:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:51,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530924571] [2024-11-08 16:35:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:51,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:51,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530924571] [2024-11-08 16:35:51,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530924571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:51,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506742519] [2024-11-08 16:35:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:51,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:51,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:51,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:51,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:35:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:51,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 16:35:51,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:51,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:52,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506742519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:52,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:52,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-08 16:35:52,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071256464] [2024-11-08 16:35:52,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:52,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 16:35:52,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:52,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 16:35:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-08 16:35:52,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:35:52,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 74 transitions, 480 flow. Second operand has 20 states, 20 states have (on average 14.05) internal successors, (281), 20 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) [2024-11-08 16:35:52,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:52,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:35:52,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:52,995 INFO L124 PetriNetUnfolderBase]: 786/1369 cut-off events. [2024-11-08 16:35:52,996 INFO L125 PetriNetUnfolderBase]: For 4064/4103 co-relation queries the response was YES. [2024-11-08 16:35:53,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4997 conditions, 1369 events. 786/1369 cut-off events. For 4064/4103 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7373 event pairs, 404 based on Foata normal form. 19/1270 useless extension candidates. Maximal degree in co-relation 4966. Up to 802 conditions per place. [2024-11-08 16:35:53,007 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 49 selfloop transitions, 12 changer transitions 66/138 dead transitions. [2024-11-08 16:35:53,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 138 transitions, 1145 flow [2024-11-08 16:35:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 16:35:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 16:35:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 251 transitions. [2024-11-08 16:35:53,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35104895104895106 [2024-11-08 16:35:53,009 INFO L175 Difference]: Start difference. First operand has 98 places, 74 transitions, 480 flow. Second operand 13 states and 251 transitions. [2024-11-08 16:35:53,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 138 transitions, 1145 flow [2024-11-08 16:35:53,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 138 transitions, 1125 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-08 16:35:53,017 INFO L231 Difference]: Finished difference. Result has 112 places, 62 transitions, 406 flow [2024-11-08 16:35:53,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=406, PETRI_PLACES=112, PETRI_TRANSITIONS=62} [2024-11-08 16:35:53,018 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-11-08 16:35:53,018 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 62 transitions, 406 flow [2024-11-08 16:35:53,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.05) internal successors, (281), 20 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) [2024-11-08 16:35:53,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:53,020 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 16:35:53,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:35:53,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 16:35:53,225 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:53,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2108440317, now seen corresponding path program 2 times [2024-11-08 16:35:53,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:53,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006192126] [2024-11-08 16:35:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:53,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:53,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006192126] [2024-11-08 16:35:53,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006192126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:53,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481703610] [2024-11-08 16:35:53,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:35:53,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:53,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:53,408 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:53,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:35:53,490 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:35:53,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:35:53,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:35:53,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:35:53,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:35:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481703610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:53,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:53,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 16:35:53,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278005438] [2024-11-08 16:35:53,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:53,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:35:53,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:35:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:35:53,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:35:53,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 62 transitions, 406 flow. Second operand has 15 states, 15 states have (on average 20.533333333333335) internal successors, (308), 15 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:53,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:53,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:35:53,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:54,019 INFO L124 PetriNetUnfolderBase]: 303/711 cut-off events. [2024-11-08 16:35:54,019 INFO L125 PetriNetUnfolderBase]: For 1954/1954 co-relation queries the response was YES. [2024-11-08 16:35:54,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 711 events. 303/711 cut-off events. For 1954/1954 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3883 event pairs, 187 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 2467. Up to 435 conditions per place. [2024-11-08 16:35:54,028 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 36 selfloop transitions, 19 changer transitions 0/74 dead transitions. [2024-11-08 16:35:54,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 74 transitions, 603 flow [2024-11-08 16:35:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:35:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 16:35:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 334 transitions. [2024-11-08 16:35:54,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40484848484848485 [2024-11-08 16:35:54,030 INFO L175 Difference]: Start difference. First operand has 112 places, 62 transitions, 406 flow. Second operand 15 states and 334 transitions. [2024-11-08 16:35:54,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 74 transitions, 603 flow [2024-11-08 16:35:54,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 74 transitions, 550 flow, removed 10 selfloop flow, removed 19 redundant places. [2024-11-08 16:35:54,037 INFO L231 Difference]: Finished difference. Result has 95 places, 66 transitions, 437 flow [2024-11-08 16:35:54,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=437, PETRI_PLACES=95, PETRI_TRANSITIONS=66} [2024-11-08 16:35:54,038 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2024-11-08 16:35:54,038 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 66 transitions, 437 flow [2024-11-08 16:35:54,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.533333333333335) internal successors, (308), 15 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:54,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:54,039 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:54,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:35:54,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:54,243 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:54,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:54,243 INFO L85 PathProgramCache]: Analyzing trace with hash -716445107, now seen corresponding path program 2 times [2024-11-08 16:35:54,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:54,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941975532] [2024-11-08 16:35:54,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:54,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:54,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:54,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941975532] [2024-11-08 16:35:54,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941975532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:54,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592240775] [2024-11-08 16:35:54,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:35:54,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:54,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:54,617 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:54,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:35:54,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:35:54,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:35:54,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 16:35:54,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:54,782 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 19 treesize of output 1 [2024-11-08 16:35:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:54,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:55,039 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 16 treesize of output 14 [2024-11-08 16:35:55,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:35:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:55,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592240775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:55,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:55,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-08 16:35:55,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61664011] [2024-11-08 16:35:55,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:55,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 16:35:55,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:55,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 16:35:55,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:35:55,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:35:55,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 66 transitions, 437 flow. Second operand has 23 states, 23 states have (on average 20.434782608695652) internal successors, (470), 23 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:55,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:55,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:35:55,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:56,241 INFO L124 PetriNetUnfolderBase]: 617/1265 cut-off events. [2024-11-08 16:35:56,242 INFO L125 PetriNetUnfolderBase]: For 2552/2552 co-relation queries the response was YES. [2024-11-08 16:35:56,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 1265 events. 617/1265 cut-off events. For 2552/2552 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7010 event pairs, 65 based on Foata normal form. 18/1267 useless extension candidates. Maximal degree in co-relation 4142. Up to 276 conditions per place. [2024-11-08 16:35:56,252 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 105 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2024-11-08 16:35:56,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 145 transitions, 1150 flow [2024-11-08 16:35:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:35:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 16:35:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 360 transitions. [2024-11-08 16:35:56,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-11-08 16:35:56,256 INFO L175 Difference]: Start difference. First operand has 95 places, 66 transitions, 437 flow. Second operand 14 states and 360 transitions. [2024-11-08 16:35:56,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 145 transitions, 1150 flow [2024-11-08 16:35:56,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 145 transitions, 1076 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-08 16:35:56,264 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 453 flow [2024-11-08 16:35:56,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=453, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2024-11-08 16:35:56,264 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 45 predicate places. [2024-11-08 16:35:56,265 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 453 flow [2024-11-08 16:35:56,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 20.434782608695652) internal successors, (470), 23 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:56,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:56,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:56,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 16:35:56,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 16:35:56,470 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:56,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -716445108, now seen corresponding path program 1 times [2024-11-08 16:35:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:56,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606743896] [2024-11-08 16:35:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:56,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606743896] [2024-11-08 16:35:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606743896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029754222] [2024-11-08 16:35:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:56,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:56,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:56,797 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:56,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:35:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:56,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 16:35:56,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:56,924 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 [2024-11-08 16:35:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:57,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:57,152 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 18 treesize of output 16 [2024-11-08 16:35:57,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:35:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:57,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029754222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:57,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:57,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-08 16:35:57,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007760680] [2024-11-08 16:35:57,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:57,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 16:35:57,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:57,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 16:35:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:35:57,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:35:57,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 453 flow. Second operand has 19 states, 19 states have (on average 20.36842105263158) internal successors, (387), 19 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:57,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:57,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:35:57,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:58,258 INFO L124 PetriNetUnfolderBase]: 599/1251 cut-off events. [2024-11-08 16:35:58,258 INFO L125 PetriNetUnfolderBase]: For 3473/3473 co-relation queries the response was YES. [2024-11-08 16:35:58,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4342 conditions, 1251 events. 599/1251 cut-off events. For 3473/3473 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6911 event pairs, 86 based on Foata normal form. 18/1252 useless extension candidates. Maximal degree in co-relation 4315. Up to 263 conditions per place. [2024-11-08 16:35:58,270 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 104 selfloop transitions, 21 changer transitions 0/144 dead transitions. [2024-11-08 16:35:58,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 144 transitions, 1132 flow [2024-11-08 16:35:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:35:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 16:35:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 359 transitions. [2024-11-08 16:35:58,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4662337662337662 [2024-11-08 16:35:58,272 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 453 flow. Second operand 14 states and 359 transitions. [2024-11-08 16:35:58,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 144 transitions, 1132 flow [2024-11-08 16:35:58,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 144 transitions, 1093 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-08 16:35:58,283 INFO L231 Difference]: Finished difference. Result has 101 places, 69 transitions, 449 flow [2024-11-08 16:35:58,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=449, PETRI_PLACES=101, PETRI_TRANSITIONS=69} [2024-11-08 16:35:58,284 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-11-08 16:35:58,284 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 69 transitions, 449 flow [2024-11-08 16:35:58,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 20.36842105263158) internal successors, (387), 19 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:58,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:58,284 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:58,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 16:35:58,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:58,489 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:35:58,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash 904275965, now seen corresponding path program 2 times [2024-11-08 16:35:58,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:58,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562827434] [2024-11-08 16:35:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:58,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:58,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562827434] [2024-11-08 16:35:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562827434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748377878] [2024-11-08 16:35:58,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:35:58,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:58,850 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:58,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:35:58,956 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:35:58,957 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:35:58,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 16:35:58,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:59,015 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 19 treesize of output 1 [2024-11-08 16:35:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:59,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:59,282 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 16 treesize of output 14 [2024-11-08 16:35:59,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:35:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:59,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748377878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:59,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:59,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-08 16:35:59,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452217630] [2024-11-08 16:35:59,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:59,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 16:35:59,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:59,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 16:35:59,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:35:59,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:35:59,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 69 transitions, 449 flow. Second operand has 23 states, 23 states have (on average 20.695652173913043) internal successors, (476), 23 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:59,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:59,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:35:59,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:00,553 INFO L124 PetriNetUnfolderBase]: 783/1523 cut-off events. [2024-11-08 16:36:00,553 INFO L125 PetriNetUnfolderBase]: For 5777/5777 co-relation queries the response was YES. [2024-11-08 16:36:00,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5669 conditions, 1523 events. 783/1523 cut-off events. For 5777/5777 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8439 event pairs, 121 based on Foata normal form. 21/1522 useless extension candidates. Maximal degree in co-relation 5643. Up to 336 conditions per place. [2024-11-08 16:36:00,568 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 120 selfloop transitions, 21 changer transitions 0/160 dead transitions. [2024-11-08 16:36:00,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 160 transitions, 1520 flow [2024-11-08 16:36:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:36:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 16:36:00,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 354 transitions. [2024-11-08 16:36:00,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4597402597402597 [2024-11-08 16:36:00,570 INFO L175 Difference]: Start difference. First operand has 101 places, 69 transitions, 449 flow. Second operand 14 states and 354 transitions. [2024-11-08 16:36:00,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 160 transitions, 1520 flow [2024-11-08 16:36:00,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 160 transitions, 1431 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-08 16:36:00,586 INFO L231 Difference]: Finished difference. Result has 105 places, 73 transitions, 512 flow [2024-11-08 16:36:00,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=512, PETRI_PLACES=105, PETRI_TRANSITIONS=73} [2024-11-08 16:36:00,587 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 53 predicate places. [2024-11-08 16:36:00,587 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 73 transitions, 512 flow [2024-11-08 16:36:00,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 20.695652173913043) internal successors, (476), 23 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:00,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:00,588 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:00,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:00,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:00,792 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:00,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:00,792 INFO L85 PathProgramCache]: Analyzing trace with hash 904275966, now seen corresponding path program 1 times [2024-11-08 16:36:00,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:00,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287378058] [2024-11-08 16:36:00,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:00,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287378058] [2024-11-08 16:36:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287378058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383545446] [2024-11-08 16:36:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:01,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:01,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:01,247 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:01,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 16:36:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 16:36:01,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:01,414 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 19 treesize of output 1 [2024-11-08 16:36:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:01,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:01,680 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 18 treesize of output 16 [2024-11-08 16:36:01,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:36:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:01,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383545446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:01,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:01,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-08 16:36:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191068045] [2024-11-08 16:36:01,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:01,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 16:36:01,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 16:36:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:36:01,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:36:01,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 73 transitions, 512 flow. Second operand has 23 states, 23 states have (on average 20.695652173913043) internal successors, (476), 23 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:01,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:01,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:36:01,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:02,748 INFO L124 PetriNetUnfolderBase]: 748/1467 cut-off events. [2024-11-08 16:36:02,748 INFO L125 PetriNetUnfolderBase]: For 6028/6028 co-relation queries the response was YES. [2024-11-08 16:36:02,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5662 conditions, 1467 events. 748/1467 cut-off events. For 6028/6028 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8081 event pairs, 121 based on Foata normal form. 21/1466 useless extension candidates. Maximal degree in co-relation 5634. Up to 333 conditions per place. [2024-11-08 16:36:02,762 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 119 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2024-11-08 16:36:02,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 159 transitions, 1486 flow [2024-11-08 16:36:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:36:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-08 16:36:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 353 transitions. [2024-11-08 16:36:02,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4584415584415584 [2024-11-08 16:36:02,764 INFO L175 Difference]: Start difference. First operand has 105 places, 73 transitions, 512 flow. Second operand 14 states and 353 transitions. [2024-11-08 16:36:02,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 159 transitions, 1486 flow [2024-11-08 16:36:02,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 159 transitions, 1449 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-08 16:36:02,780 INFO L231 Difference]: Finished difference. Result has 109 places, 72 transitions, 509 flow [2024-11-08 16:36:02,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=509, PETRI_PLACES=109, PETRI_TRANSITIONS=72} [2024-11-08 16:36:02,781 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-11-08 16:36:02,781 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 72 transitions, 509 flow [2024-11-08 16:36:02,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 20.695652173913043) internal successors, (476), 23 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:02,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:02,782 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:02,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 16:36:02,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:02,986 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:02,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1308957710, now seen corresponding path program 1 times [2024-11-08 16:36:02,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:02,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342629559] [2024-11-08 16:36:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:02,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:03,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:03,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342629559] [2024-11-08 16:36:03,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342629559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:03,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991350209] [2024-11-08 16:36:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:03,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:03,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:03,063 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:03,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 16:36:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:36:03,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:03,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:36:03,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991350209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:03,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:36:03,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 16:36:03,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164805450] [2024-11-08 16:36:03,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:03,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:36:03,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:36:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:03,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-08 16:36:03,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 72 transitions, 509 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:03,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:03,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-08 16:36:03,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:03,576 INFO L124 PetriNetUnfolderBase]: 677/1382 cut-off events. [2024-11-08 16:36:03,576 INFO L125 PetriNetUnfolderBase]: For 5783/5783 co-relation queries the response was YES. [2024-11-08 16:36:03,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5480 conditions, 1382 events. 677/1382 cut-off events. For 5783/5783 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7638 event pairs, 41 based on Foata normal form. 44/1394 useless extension candidates. Maximal degree in co-relation 5453. Up to 370 conditions per place. [2024-11-08 16:36:03,590 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 104 selfloop transitions, 9 changer transitions 0/132 dead transitions. [2024-11-08 16:36:03,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 132 transitions, 1255 flow [2024-11-08 16:36:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:36:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:36:03,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-11-08 16:36:03,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-11-08 16:36:03,592 INFO L175 Difference]: Start difference. First operand has 109 places, 72 transitions, 509 flow. Second operand 6 states and 190 transitions. [2024-11-08 16:36:03,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 132 transitions, 1255 flow [2024-11-08 16:36:03,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1184 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-08 16:36:03,605 INFO L231 Difference]: Finished difference. Result has 102 places, 71 transitions, 494 flow [2024-11-08 16:36:03,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=102, PETRI_TRANSITIONS=71} [2024-11-08 16:36:03,605 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-11-08 16:36:03,605 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 71 transitions, 494 flow [2024-11-08 16:36:03,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:03,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:03,606 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:03,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:03,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:03,806 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:03,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1922982721, now seen corresponding path program 1 times [2024-11-08 16:36:03,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:03,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129127889] [2024-11-08 16:36:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:03,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:03,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:03,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129127889] [2024-11-08 16:36:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129127889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:03,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146453638] [2024-11-08 16:36:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:03,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:03,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:03,897 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:03,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 16:36:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:04,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:36:04,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:04,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:04,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146453638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:04,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:04,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:36:04,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117452780] [2024-11-08 16:36:04,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:04,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:36:04,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:36:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:36:04,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-08 16:36:04,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 71 transitions, 494 flow. Second operand has 12 states, 12 states have (on average 22.916666666666668) internal successors, (275), 12 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:04,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:04,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-08 16:36:04,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:04,753 INFO L124 PetriNetUnfolderBase]: 1104/2274 cut-off events. [2024-11-08 16:36:04,753 INFO L125 PetriNetUnfolderBase]: For 9542/9542 co-relation queries the response was YES. [2024-11-08 16:36:04,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8970 conditions, 2274 events. 1104/2274 cut-off events. For 9542/9542 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13234 event pairs, 216 based on Foata normal form. 66/2264 useless extension candidates. Maximal degree in co-relation 8944. Up to 614 conditions per place. [2024-11-08 16:36:04,779 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 173 selfloop transitions, 13 changer transitions 0/205 dead transitions. [2024-11-08 16:36:04,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 205 transitions, 1940 flow [2024-11-08 16:36:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:36:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:36:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-11-08 16:36:04,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5963636363636363 [2024-11-08 16:36:04,781 INFO L175 Difference]: Start difference. First operand has 102 places, 71 transitions, 494 flow. Second operand 10 states and 328 transitions. [2024-11-08 16:36:04,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 205 transitions, 1940 flow [2024-11-08 16:36:04,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 205 transitions, 1896 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-08 16:36:04,805 INFO L231 Difference]: Finished difference. Result has 108 places, 78 transitions, 564 flow [2024-11-08 16:36:04,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=564, PETRI_PLACES=108, PETRI_TRANSITIONS=78} [2024-11-08 16:36:04,806 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 56 predicate places. [2024-11-08 16:36:04,806 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 78 transitions, 564 flow [2024-11-08 16:36:04,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.916666666666668) internal successors, (275), 12 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:04,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:04,807 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:04,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:05,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:05,008 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:05,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1425832867, now seen corresponding path program 1 times [2024-11-08 16:36:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784559352] [2024-11-08 16:36:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:05,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:05,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784559352] [2024-11-08 16:36:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784559352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:05,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066140847] [2024-11-08 16:36:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:05,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:05,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:05,105 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:05,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 16:36:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:05,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:36:05,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:05,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:36:05,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066140847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:05,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:36:05,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 16:36:05,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646664948] [2024-11-08 16:36:05,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:05,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:36:05,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:36:05,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:05,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-08 16:36:05,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 78 transitions, 564 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:05,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:05,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-08 16:36:05,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:05,690 INFO L124 PetriNetUnfolderBase]: 1198/2314 cut-off events. [2024-11-08 16:36:05,690 INFO L125 PetriNetUnfolderBase]: For 10485/10514 co-relation queries the response was YES. [2024-11-08 16:36:05,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8996 conditions, 2314 events. 1198/2314 cut-off events. For 10485/10514 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 13808 event pairs, 115 based on Foata normal form. 74/2351 useless extension candidates. Maximal degree in co-relation 8968. Up to 637 conditions per place. [2024-11-08 16:36:05,708 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 120 selfloop transitions, 9 changer transitions 0/150 dead transitions. [2024-11-08 16:36:05,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 150 transitions, 1516 flow [2024-11-08 16:36:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:36:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:36:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-11-08 16:36:05,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5636363636363636 [2024-11-08 16:36:05,710 INFO L175 Difference]: Start difference. First operand has 108 places, 78 transitions, 564 flow. Second operand 6 states and 186 transitions. [2024-11-08 16:36:05,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 150 transitions, 1516 flow [2024-11-08 16:36:05,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 150 transitions, 1484 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:36:05,745 INFO L231 Difference]: Finished difference. Result has 109 places, 77 transitions, 570 flow [2024-11-08 16:36:05,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=109, PETRI_TRANSITIONS=77} [2024-11-08 16:36:05,746 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-11-08 16:36:05,746 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 77 transitions, 570 flow [2024-11-08 16:36:05,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:05,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:05,747 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:05,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 16:36:05,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 16:36:05,947 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:05,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1251146560, now seen corresponding path program 1 times [2024-11-08 16:36:05,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:05,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358769632] [2024-11-08 16:36:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:06,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:06,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358769632] [2024-11-08 16:36:06,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358769632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:06,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085852094] [2024-11-08 16:36:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:06,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:06,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:06,040 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:06,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 16:36:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:36:06,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:06,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:36:06,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085852094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:06,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:06,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:36:06,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907332754] [2024-11-08 16:36:06,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:06,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:36:06,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:06,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:36:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:36:06,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-08 16:36:06,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 77 transitions, 570 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:06,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:06,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-08 16:36:06,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:07,065 INFO L124 PetriNetUnfolderBase]: 1912/3654 cut-off events. [2024-11-08 16:36:07,065 INFO L125 PetriNetUnfolderBase]: For 18468/18515 co-relation queries the response was YES. [2024-11-08 16:36:07,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14797 conditions, 3654 events. 1912/3654 cut-off events. For 18468/18515 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 22802 event pairs, 421 based on Foata normal form. 111/3725 useless extension candidates. Maximal degree in co-relation 14768. Up to 1065 conditions per place. [2024-11-08 16:36:07,086 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 201 selfloop transitions, 13 changer transitions 0/235 dead transitions. [2024-11-08 16:36:07,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 235 transitions, 2458 flow [2024-11-08 16:36:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:36:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:36:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 320 transitions. [2024-11-08 16:36:07,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-08 16:36:07,088 INFO L175 Difference]: Start difference. First operand has 109 places, 77 transitions, 570 flow. Second operand 10 states and 320 transitions. [2024-11-08 16:36:07,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 235 transitions, 2458 flow [2024-11-08 16:36:07,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 235 transitions, 2414 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-08 16:36:07,146 INFO L231 Difference]: Finished difference. Result has 115 places, 84 transitions, 638 flow [2024-11-08 16:36:07,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=638, PETRI_PLACES=115, PETRI_TRANSITIONS=84} [2024-11-08 16:36:07,146 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 63 predicate places. [2024-11-08 16:36:07,147 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 84 transitions, 638 flow [2024-11-08 16:36:07,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:07,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:07,147 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:07,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:07,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 16:36:07,348 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:07,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:07,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1303841434, now seen corresponding path program 2 times [2024-11-08 16:36:07,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:07,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879016616] [2024-11-08 16:36:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:07,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879016616] [2024-11-08 16:36:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879016616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908565704] [2024-11-08 16:36:07,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:36:07,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:07,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:07,616 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:07,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 16:36:07,734 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:36:07,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:07,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 16:36:07,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:08,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908565704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:08,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:08,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-08 16:36:08,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511406503] [2024-11-08 16:36:08,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:08,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 16:36:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:08,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 16:36:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-08 16:36:08,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:36:08,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 84 transitions, 638 flow. Second operand has 30 states, 30 states have (on average 13.933333333333334) internal successors, (418), 30 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:08,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:08,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:36:08,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:10,335 INFO L124 PetriNetUnfolderBase]: 4156/7147 cut-off events. [2024-11-08 16:36:10,335 INFO L125 PetriNetUnfolderBase]: For 31483/31565 co-relation queries the response was YES. [2024-11-08 16:36:10,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29822 conditions, 7147 events. 4156/7147 cut-off events. For 31483/31565 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 45548 event pairs, 1940 based on Foata normal form. 38/7067 useless extension candidates. Maximal degree in co-relation 29791. Up to 3705 conditions per place. [2024-11-08 16:36:10,402 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 193 selfloop transitions, 32 changer transitions 45/283 dead transitions. [2024-11-08 16:36:10,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 283 transitions, 2919 flow [2024-11-08 16:36:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 16:36:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-08 16:36:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 359 transitions. [2024-11-08 16:36:10,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36262626262626263 [2024-11-08 16:36:10,404 INFO L175 Difference]: Start difference. First operand has 115 places, 84 transitions, 638 flow. Second operand 18 states and 359 transitions. [2024-11-08 16:36:10,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 283 transitions, 2919 flow [2024-11-08 16:36:10,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 283 transitions, 2857 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:36:10,581 INFO L231 Difference]: Finished difference. Result has 137 places, 99 transitions, 860 flow [2024-11-08 16:36:10,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=860, PETRI_PLACES=137, PETRI_TRANSITIONS=99} [2024-11-08 16:36:10,582 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 85 predicate places. [2024-11-08 16:36:10,582 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 99 transitions, 860 flow [2024-11-08 16:36:10,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 13.933333333333334) internal successors, (418), 30 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:10,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:10,582 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:10,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 16:36:10,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:10,783 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:10,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:10,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1181597976, now seen corresponding path program 2 times [2024-11-08 16:36:10,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:10,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716326871] [2024-11-08 16:36:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:10,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:11,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:11,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716326871] [2024-11-08 16:36:11,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716326871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:11,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965922336] [2024-11-08 16:36:11,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:36:11,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:11,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:11,020 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:11,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 16:36:11,144 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:36:11,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:11,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 16:36:11,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:11,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:11,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965922336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:11,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:11,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-08 16:36:11,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488103390] [2024-11-08 16:36:11,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:11,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 16:36:11,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 16:36:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-08 16:36:11,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:36:11,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 99 transitions, 860 flow. Second operand has 30 states, 30 states have (on average 14.0) internal successors, (420), 30 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:11,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:11,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:36:11,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:13,318 INFO L124 PetriNetUnfolderBase]: 3330/5395 cut-off events. [2024-11-08 16:36:13,318 INFO L125 PetriNetUnfolderBase]: For 33132/33303 co-relation queries the response was YES. [2024-11-08 16:36:13,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24138 conditions, 5395 events. 3330/5395 cut-off events. For 33132/33303 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 32108 event pairs, 1814 based on Foata normal form. 77/5435 useless extension candidates. Maximal degree in co-relation 24097. Up to 3677 conditions per place. [2024-11-08 16:36:13,350 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 67 selfloop transitions, 18 changer transitions 120/218 dead transitions. [2024-11-08 16:36:13,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 218 transitions, 2353 flow [2024-11-08 16:36:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 16:36:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-08 16:36:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 335 transitions. [2024-11-08 16:36:13,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2024-11-08 16:36:13,354 INFO L175 Difference]: Start difference. First operand has 137 places, 99 transitions, 860 flow. Second operand 18 states and 335 transitions. [2024-11-08 16:36:13,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 218 transitions, 2353 flow [2024-11-08 16:36:13,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 218 transitions, 2302 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-08 16:36:13,413 INFO L231 Difference]: Finished difference. Result has 155 places, 84 transitions, 725 flow [2024-11-08 16:36:13,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=725, PETRI_PLACES=155, PETRI_TRANSITIONS=84} [2024-11-08 16:36:13,414 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 103 predicate places. [2024-11-08 16:36:13,414 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 84 transitions, 725 flow [2024-11-08 16:36:13,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 14.0) internal successors, (420), 30 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:13,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:13,414 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:13,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 16:36:13,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 16:36:13,615 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:13,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:13,615 INFO L85 PathProgramCache]: Analyzing trace with hash -777010322, now seen corresponding path program 3 times [2024-11-08 16:36:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:13,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704370829] [2024-11-08 16:36:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:13,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:14,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:14,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704370829] [2024-11-08 16:36:14,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704370829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:14,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658617414] [2024-11-08 16:36:14,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:36:14,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:14,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:14,303 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:14,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 16:36:14,450 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 16:36:14,451 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:14,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 16:36:14,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:14,516 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 [2024-11-08 16:36:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:14,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:14,915 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 16 treesize of output 14 [2024-11-08 16:36:14,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:36:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:15,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658617414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:15,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:15,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-08 16:36:15,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912701071] [2024-11-08 16:36:15,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:15,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 16:36:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 16:36:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2024-11-08 16:36:15,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:36:15,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 84 transitions, 725 flow. Second operand has 29 states, 29 states have (on average 20.344827586206897) internal successors, (590), 29 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:15,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:15,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:36:15,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:17,212 INFO L124 PetriNetUnfolderBase]: 1861/3716 cut-off events. [2024-11-08 16:36:17,212 INFO L125 PetriNetUnfolderBase]: For 20875/20901 co-relation queries the response was YES. [2024-11-08 16:36:17,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16333 conditions, 3716 events. 1861/3716 cut-off events. For 20875/20901 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 22855 event pairs, 280 based on Foata normal form. 38/3723 useless extension candidates. Maximal degree in co-relation 16285. Up to 829 conditions per place. [2024-11-08 16:36:17,242 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 208 selfloop transitions, 27 changer transitions 0/257 dead transitions. [2024-11-08 16:36:17,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 257 transitions, 2874 flow [2024-11-08 16:36:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 16:36:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-08 16:36:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 485 transitions. [2024-11-08 16:36:17,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-11-08 16:36:17,244 INFO L175 Difference]: Start difference. First operand has 155 places, 84 transitions, 725 flow. Second operand 19 states and 485 transitions. [2024-11-08 16:36:17,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 257 transitions, 2874 flow [2024-11-08 16:36:17,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 257 transitions, 2716 flow, removed 41 selfloop flow, removed 21 redundant places. [2024-11-08 16:36:17,341 INFO L231 Difference]: Finished difference. Result has 136 places, 86 transitions, 756 flow [2024-11-08 16:36:17,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=756, PETRI_PLACES=136, PETRI_TRANSITIONS=86} [2024-11-08 16:36:17,342 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 84 predicate places. [2024-11-08 16:36:17,342 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 86 transitions, 756 flow [2024-11-08 16:36:17,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 20.344827586206897) internal successors, (590), 29 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:17,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:17,343 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:17,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:17,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 16:36:17,547 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:17,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:17,547 INFO L85 PathProgramCache]: Analyzing trace with hash -777010323, now seen corresponding path program 3 times [2024-11-08 16:36:17,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:17,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558551217] [2024-11-08 16:36:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:17,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:18,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:18,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558551217] [2024-11-08 16:36:18,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558551217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:18,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884745003] [2024-11-08 16:36:18,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:36:18,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:18,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:18,047 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:18,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 16:36:18,174 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 16:36:18,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:18,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 16:36:18,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:18,279 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 19 treesize of output 1 [2024-11-08 16:36:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:18,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:18,751 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 18 treesize of output 16 [2024-11-08 16:36:18,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:36:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:18,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884745003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:18,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:18,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-08 16:36:18,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883374963] [2024-11-08 16:36:18,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:18,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 16:36:18,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 16:36:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 16:36:19,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:36:19,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 86 transitions, 756 flow. Second operand has 33 states, 33 states have (on average 20.393939393939394) internal successors, (673), 33 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:19,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:19,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:36:19,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:21,283 INFO L124 PetriNetUnfolderBase]: 1781/3564 cut-off events. [2024-11-08 16:36:21,283 INFO L125 PetriNetUnfolderBase]: For 22066/22090 co-relation queries the response was YES. [2024-11-08 16:36:21,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15739 conditions, 3564 events. 1781/3564 cut-off events. For 22066/22090 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21585 event pairs, 280 based on Foata normal form. 38/3565 useless extension candidates. Maximal degree in co-relation 15700. Up to 829 conditions per place. [2024-11-08 16:36:21,307 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 207 selfloop transitions, 27 changer transitions 0/256 dead transitions. [2024-11-08 16:36:21,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 256 transitions, 2782 flow [2024-11-08 16:36:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 16:36:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-08 16:36:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 484 transitions. [2024-11-08 16:36:21,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-11-08 16:36:21,309 INFO L175 Difference]: Start difference. First operand has 136 places, 86 transitions, 756 flow. Second operand 19 states and 484 transitions. [2024-11-08 16:36:21,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 256 transitions, 2782 flow [2024-11-08 16:36:21,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 256 transitions, 2696 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-11-08 16:36:21,365 INFO L231 Difference]: Finished difference. Result has 136 places, 85 transitions, 716 flow [2024-11-08 16:36:21,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=716, PETRI_PLACES=136, PETRI_TRANSITIONS=85} [2024-11-08 16:36:21,366 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 84 predicate places. [2024-11-08 16:36:21,366 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 85 transitions, 716 flow [2024-11-08 16:36:21,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 20.393939393939394) internal successors, (673), 33 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:21,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:21,367 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:21,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:21,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 16:36:21,567 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:21,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:21,568 INFO L85 PathProgramCache]: Analyzing trace with hash 660154719, now seen corresponding path program 3 times [2024-11-08 16:36:21,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:21,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203091045] [2024-11-08 16:36:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:21,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:22,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:22,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203091045] [2024-11-08 16:36:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203091045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:22,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635194064] [2024-11-08 16:36:22,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:36:22,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:22,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:22,042 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:22,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 16:36:22,180 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 16:36:22,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:22,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 16:36:22,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:22,226 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 [2024-11-08 16:36:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:22,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:22,604 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 18 treesize of output 16 [2024-11-08 16:36:22,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:36:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635194064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:22,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:22,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-08 16:36:22,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503674252] [2024-11-08 16:36:22,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:22,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 16:36:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 16:36:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2024-11-08 16:36:23,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:36:23,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 85 transitions, 716 flow. Second operand has 29 states, 29 states have (on average 20.482758620689655) internal successors, (594), 29 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:23,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:23,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:36:23,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:24,857 INFO L124 PetriNetUnfolderBase]: 1674/3225 cut-off events. [2024-11-08 16:36:24,857 INFO L125 PetriNetUnfolderBase]: For 19353/19396 co-relation queries the response was YES. [2024-11-08 16:36:24,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13855 conditions, 3225 events. 1674/3225 cut-off events. For 19353/19396 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19247 event pairs, 283 based on Foata normal form. 33/3219 useless extension candidates. Maximal degree in co-relation 13817. Up to 766 conditions per place. [2024-11-08 16:36:24,879 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 209 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2024-11-08 16:36:24,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 258 transitions, 2996 flow [2024-11-08 16:36:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 16:36:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-08 16:36:24,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 476 transitions. [2024-11-08 16:36:24,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45550239234449763 [2024-11-08 16:36:24,881 INFO L175 Difference]: Start difference. First operand has 136 places, 85 transitions, 716 flow. Second operand 19 states and 476 transitions. [2024-11-08 16:36:24,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 258 transitions, 2996 flow [2024-11-08 16:36:24,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 258 transitions, 2760 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-11-08 16:36:24,943 INFO L231 Difference]: Finished difference. Result has 139 places, 87 transitions, 762 flow [2024-11-08 16:36:24,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=762, PETRI_PLACES=139, PETRI_TRANSITIONS=87} [2024-11-08 16:36:24,943 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-08 16:36:24,943 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 87 transitions, 762 flow [2024-11-08 16:36:24,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 20.482758620689655) internal successors, (594), 29 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:24,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:24,944 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:24,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:25,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:25,145 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:25,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:25,145 INFO L85 PathProgramCache]: Analyzing trace with hash 660154718, now seen corresponding path program 3 times [2024-11-08 16:36:25,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:25,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845205997] [2024-11-08 16:36:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:25,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:25,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845205997] [2024-11-08 16:36:25,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845205997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:25,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890729475] [2024-11-08 16:36:25,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:36:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:25,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:25,623 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:25,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 16:36:25,756 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 16:36:25,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:25,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 16:36:25,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:25,841 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 19 treesize of output 1 [2024-11-08 16:36:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:26,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:26,277 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 16 treesize of output 14 [2024-11-08 16:36:26,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:36:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:26,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890729475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:26,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:26,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-08 16:36:26,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613287843] [2024-11-08 16:36:26,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:26,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 16:36:26,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 16:36:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 16:36:27,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:36:27,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 87 transitions, 762 flow. Second operand has 33 states, 33 states have (on average 20.575757575757574) internal successors, (679), 33 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:27,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:27,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:36:27,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:28,456 INFO L124 PetriNetUnfolderBase]: 1585/3007 cut-off events. [2024-11-08 16:36:28,456 INFO L125 PetriNetUnfolderBase]: For 19962/20003 co-relation queries the response was YES. [2024-11-08 16:36:28,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13650 conditions, 3007 events. 1585/3007 cut-off events. For 19962/20003 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 17769 event pairs, 283 based on Foata normal form. 33/2873 useless extension candidates. Maximal degree in co-relation 13611. Up to 766 conditions per place. [2024-11-08 16:36:28,479 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 208 selfloop transitions, 27 changer transitions 0/257 dead transitions. [2024-11-08 16:36:28,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 257 transitions, 2825 flow [2024-11-08 16:36:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 16:36:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-08 16:36:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 475 transitions. [2024-11-08 16:36:28,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-08 16:36:28,481 INFO L175 Difference]: Start difference. First operand has 139 places, 87 transitions, 762 flow. Second operand 19 states and 475 transitions. [2024-11-08 16:36:28,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 257 transitions, 2825 flow [2024-11-08 16:36:28,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 257 transitions, 2737 flow, removed 2 selfloop flow, removed 18 redundant places. [2024-11-08 16:36:28,533 INFO L231 Difference]: Finished difference. Result has 139 places, 86 transitions, 719 flow [2024-11-08 16:36:28,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=719, PETRI_PLACES=139, PETRI_TRANSITIONS=86} [2024-11-08 16:36:28,534 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-08 16:36:28,534 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 86 transitions, 719 flow [2024-11-08 16:36:28,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 20.575757575757574) internal successors, (679), 33 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:28,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:28,534 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:28,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:28,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:28,735 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:28,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1840008761, now seen corresponding path program 4 times [2024-11-08 16:36:28,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:28,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118280441] [2024-11-08 16:36:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:28,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:29,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118280441] [2024-11-08 16:36:29,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118280441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016905080] [2024-11-08 16:36:29,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:36:29,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:29,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:29,061 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:29,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 16:36:29,195 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:36:29,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:29,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 16:36:29,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:29,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016905080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:29,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:29,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-11-08 16:36:29,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231651163] [2024-11-08 16:36:29,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:29,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 16:36:29,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:29,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 16:36:29,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 16:36:30,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:36:30,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 86 transitions, 719 flow. Second operand has 40 states, 40 states have (on average 13.925) internal successors, (557), 40 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:30,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:30,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:36:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:32,361 INFO L124 PetriNetUnfolderBase]: 4076/7004 cut-off events. [2024-11-08 16:36:32,361 INFO L125 PetriNetUnfolderBase]: For 32997/33073 co-relation queries the response was YES. [2024-11-08 16:36:32,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32173 conditions, 7004 events. 4076/7004 cut-off events. For 32997/33073 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 43985 event pairs, 1633 based on Foata normal form. 34/6841 useless extension candidates. Maximal degree in co-relation 32135. Up to 3158 conditions per place. [2024-11-08 16:36:32,401 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 251 selfloop transitions, 38 changer transitions 60/362 dead transitions. [2024-11-08 16:36:32,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 362 transitions, 4034 flow [2024-11-08 16:36:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 16:36:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-08 16:36:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 457 transitions. [2024-11-08 16:36:32,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3612648221343874 [2024-11-08 16:36:32,403 INFO L175 Difference]: Start difference. First operand has 139 places, 86 transitions, 719 flow. Second operand 23 states and 457 transitions. [2024-11-08 16:36:32,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 362 transitions, 4034 flow [2024-11-08 16:36:32,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 362 transitions, 3731 flow, removed 13 selfloop flow, removed 17 redundant places. [2024-11-08 16:36:32,495 INFO L231 Difference]: Finished difference. Result has 154 places, 106 transitions, 987 flow [2024-11-08 16:36:32,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=987, PETRI_PLACES=154, PETRI_TRANSITIONS=106} [2024-11-08 16:36:32,496 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 102 predicate places. [2024-11-08 16:36:32,496 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 106 transitions, 987 flow [2024-11-08 16:36:32,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 13.925) internal successors, (557), 40 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:32,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:32,497 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:32,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:32,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-08 16:36:32,697 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:32,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:32,698 INFO L85 PathProgramCache]: Analyzing trace with hash 119043512, now seen corresponding path program 4 times [2024-11-08 16:36:32,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:32,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307238289] [2024-11-08 16:36:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:32,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:33,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307238289] [2024-11-08 16:36:33,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307238289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236673674] [2024-11-08 16:36:33,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:36:33,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:33,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:33,018 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:33,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 16:36:33,154 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:36:33,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:33,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 16:36:33,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:33,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:33,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236673674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:33,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:33,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-11-08 16:36:33,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179693411] [2024-11-08 16:36:33,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:33,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 16:36:33,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:33,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 16:36:33,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 16:36:34,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:36:34,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 106 transitions, 987 flow. Second operand has 40 states, 40 states have (on average 13.975) internal successors, (559), 40 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:34,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:34,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:36:34,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:35,795 INFO L124 PetriNetUnfolderBase]: 3326/5400 cut-off events. [2024-11-08 16:36:35,795 INFO L125 PetriNetUnfolderBase]: For 35836/36073 co-relation queries the response was YES. [2024-11-08 16:36:35,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25451 conditions, 5400 events. 3326/5400 cut-off events. For 35836/36073 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 31707 event pairs, 1532 based on Foata normal form. 142/5497 useless extension candidates. Maximal degree in co-relation 25404. Up to 3130 conditions per place. [2024-11-08 16:36:35,830 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 69 selfloop transitions, 19 changer transitions 194/295 dead transitions. [2024-11-08 16:36:35,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 295 transitions, 3395 flow [2024-11-08 16:36:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 16:36:35,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-08 16:36:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 424 transitions. [2024-11-08 16:36:35,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33517786561264823 [2024-11-08 16:36:35,831 INFO L175 Difference]: Start difference. First operand has 154 places, 106 transitions, 987 flow. Second operand 23 states and 424 transitions. [2024-11-08 16:36:35,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 295 transitions, 3395 flow [2024-11-08 16:36:35,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 295 transitions, 3327 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-11-08 16:36:35,921 INFO L231 Difference]: Finished difference. Result has 177 places, 86 transitions, 780 flow [2024-11-08 16:36:35,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=780, PETRI_PLACES=177, PETRI_TRANSITIONS=86} [2024-11-08 16:36:35,922 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2024-11-08 16:36:35,922 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 86 transitions, 780 flow [2024-11-08 16:36:35,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 13.975) internal successors, (559), 40 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:35,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:35,922 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:35,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:36,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-08 16:36:36,123 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:36,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1146217230, now seen corresponding path program 5 times [2024-11-08 16:36:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036779172] [2024-11-08 16:36:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:36,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036779172] [2024-11-08 16:36:36,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036779172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:36,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654583061] [2024-11-08 16:36:36,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:36:36,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:36,719 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:36,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 16:36:36,869 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-08 16:36:36,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:36,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 16:36:36,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:36,924 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 [2024-11-08 16:36:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:37,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:37,492 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 18 treesize of output 16 [2024-11-08 16:36:37,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:36:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:37,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654583061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:37,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-11-08 16:36:37,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259997594] [2024-11-08 16:36:37,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:37,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 16:36:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 16:36:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 16:36:38,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:36:38,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 86 transitions, 780 flow. Second operand has 39 states, 39 states have (on average 20.333333333333332) internal successors, (793), 39 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:38,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:38,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:36:38,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:40,979 INFO L124 PetriNetUnfolderBase]: 1566/3124 cut-off events. [2024-11-08 16:36:40,979 INFO L125 PetriNetUnfolderBase]: For 16887/16915 co-relation queries the response was YES. [2024-11-08 16:36:40,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14898 conditions, 3124 events. 1566/3124 cut-off events. For 16887/16915 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 18427 event pairs, 158 based on Foata normal form. 34/3072 useless extension candidates. Maximal degree in co-relation 14842. Up to 564 conditions per place. [2024-11-08 16:36:41,005 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 274 selfloop transitions, 31 changer transitions 0/328 dead transitions. [2024-11-08 16:36:41,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 328 transitions, 3748 flow [2024-11-08 16:36:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:36:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:36:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 613 transitions. [2024-11-08 16:36:41,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4643939393939394 [2024-11-08 16:36:41,007 INFO L175 Difference]: Start difference. First operand has 177 places, 86 transitions, 780 flow. Second operand 24 states and 613 transitions. [2024-11-08 16:36:41,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 328 transitions, 3748 flow [2024-11-08 16:36:41,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 328 transitions, 3526 flow, removed 64 selfloop flow, removed 27 redundant places. [2024-11-08 16:36:41,155 INFO L231 Difference]: Finished difference. Result has 151 places, 88 transitions, 815 flow [2024-11-08 16:36:41,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=815, PETRI_PLACES=151, PETRI_TRANSITIONS=88} [2024-11-08 16:36:41,155 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 99 predicate places. [2024-11-08 16:36:41,156 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 88 transitions, 815 flow [2024-11-08 16:36:41,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 20.333333333333332) internal successors, (793), 39 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:41,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:41,156 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:41,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 16:36:41,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-08 16:36:41,357 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:41,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:41,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1146217231, now seen corresponding path program 4 times [2024-11-08 16:36:41,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:41,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361583312] [2024-11-08 16:36:41,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:41,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:41,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:41,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361583312] [2024-11-08 16:36:41,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361583312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:41,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35347259] [2024-11-08 16:36:41,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:36:41,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:41,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:41,956 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:41,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 16:36:42,093 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:36:42,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:42,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 16:36:42,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:42,237 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 19 treesize of output 1 [2024-11-08 16:36:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:42,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:43,001 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 16 treesize of output 14 [2024-11-08 16:36:43,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:36:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:43,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35347259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:43,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:43,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-11-08 16:36:43,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914851120] [2024-11-08 16:36:43,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:43,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 16:36:43,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 16:36:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 16:36:44,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:36:44,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 88 transitions, 815 flow. Second operand has 43 states, 43 states have (on average 20.372093023255815) internal successors, (876), 43 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:44,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:44,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:36:44,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:46,444 INFO L124 PetriNetUnfolderBase]: 1495/2994 cut-off events. [2024-11-08 16:36:46,444 INFO L125 PetriNetUnfolderBase]: For 18311/18335 co-relation queries the response was YES. [2024-11-08 16:36:46,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14102 conditions, 2994 events. 1495/2994 cut-off events. For 18311/18335 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 17436 event pairs, 121 based on Foata normal form. 34/2954 useless extension candidates. Maximal degree in co-relation 14059. Up to 564 conditions per place. [2024-11-08 16:36:46,468 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 273 selfloop transitions, 31 changer transitions 0/327 dead transitions. [2024-11-08 16:36:46,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 327 transitions, 3595 flow [2024-11-08 16:36:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:36:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:36:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 612 transitions. [2024-11-08 16:36:46,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-11-08 16:36:46,470 INFO L175 Difference]: Start difference. First operand has 151 places, 88 transitions, 815 flow. Second operand 24 states and 612 transitions. [2024-11-08 16:36:46,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 327 transitions, 3595 flow [2024-11-08 16:36:46,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 327 transitions, 3499 flow, removed 3 selfloop flow, removed 23 redundant places. [2024-11-08 16:36:46,549 INFO L231 Difference]: Finished difference. Result has 151 places, 87 transitions, 769 flow [2024-11-08 16:36:46,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=769, PETRI_PLACES=151, PETRI_TRANSITIONS=87} [2024-11-08 16:36:46,549 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 99 predicate places. [2024-11-08 16:36:46,549 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 87 transitions, 769 flow [2024-11-08 16:36:46,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 20.372093023255815) internal successors, (876), 43 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:46,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:46,550 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:46,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:46,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 16:36:46,751 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:46,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash 844067136, now seen corresponding path program 4 times [2024-11-08 16:36:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:46,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99336237] [2024-11-08 16:36:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:47,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:47,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99336237] [2024-11-08 16:36:47,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99336237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:47,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505898025] [2024-11-08 16:36:47,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:36:47,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:47,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:47,364 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:47,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 16:36:47,508 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:36:47,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:47,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 16:36:47,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:47,662 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 19 treesize of output 1 [2024-11-08 16:36:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:48,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:48,333 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 18 treesize of output 16 [2024-11-08 16:36:48,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:36:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:48,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505898025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:48,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:48,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-11-08 16:36:48,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842982946] [2024-11-08 16:36:48,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:48,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 16:36:48,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:48,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 16:36:48,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1673, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 16:36:49,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:36:49,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 87 transitions, 769 flow. Second operand has 43 states, 43 states have (on average 20.511627906976745) internal successors, (882), 43 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:49,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:49,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:36:49,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:51,884 INFO L124 PetriNetUnfolderBase]: 1380/2657 cut-off events. [2024-11-08 16:36:51,884 INFO L125 PetriNetUnfolderBase]: For 16704/16743 co-relation queries the response was YES. [2024-11-08 16:36:51,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12004 conditions, 2657 events. 1380/2657 cut-off events. For 16704/16743 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15057 event pairs, 169 based on Foata normal form. 29/2598 useless extension candidates. Maximal degree in co-relation 11962. Up to 521 conditions per place. [2024-11-08 16:36:51,904 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 275 selfloop transitions, 31 changer transitions 0/329 dead transitions. [2024-11-08 16:36:51,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 329 transitions, 3968 flow [2024-11-08 16:36:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:36:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:36:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 601 transitions. [2024-11-08 16:36:51,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4553030303030303 [2024-11-08 16:36:51,906 INFO L175 Difference]: Start difference. First operand has 151 places, 87 transitions, 769 flow. Second operand 24 states and 601 transitions. [2024-11-08 16:36:51,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 329 transitions, 3968 flow [2024-11-08 16:36:52,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 329 transitions, 3612 flow, removed 14 selfloop flow, removed 22 redundant places. [2024-11-08 16:36:52,033 INFO L231 Difference]: Finished difference. Result has 154 places, 89 transitions, 815 flow [2024-11-08 16:36:52,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=815, PETRI_PLACES=154, PETRI_TRANSITIONS=89} [2024-11-08 16:36:52,034 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 102 predicate places. [2024-11-08 16:36:52,034 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 89 transitions, 815 flow [2024-11-08 16:36:52,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 20.511627906976745) internal successors, (882), 43 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:52,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:52,034 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:52,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-08 16:36:52,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 16:36:52,235 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:52,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash 844067135, now seen corresponding path program 5 times [2024-11-08 16:36:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:52,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387208335] [2024-11-08 16:36:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:52,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:52,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387208335] [2024-11-08 16:36:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387208335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843851785] [2024-11-08 16:36:52,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:36:52,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:52,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:52,851 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:52,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 16:36:53,000 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-08 16:36:53,001 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:53,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 16:36:53,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:53,046 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 [2024-11-08 16:36:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:53,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:53,572 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 16 treesize of output 14 [2024-11-08 16:36:53,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:36:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:53,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843851785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:53,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:53,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-11-08 16:36:53,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255233421] [2024-11-08 16:36:53,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:53,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 16:36:53,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 16:36:53,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 16:36:54,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:36:54,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 89 transitions, 815 flow. Second operand has 39 states, 39 states have (on average 20.435897435897434) internal successors, (797), 39 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:54,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:54,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:36:54,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:56,857 INFO L124 PetriNetUnfolderBase]: 1329/2577 cut-off events. [2024-11-08 16:36:56,857 INFO L125 PetriNetUnfolderBase]: For 16801/16838 co-relation queries the response was YES. [2024-11-08 16:36:56,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11782 conditions, 2577 events. 1329/2577 cut-off events. For 16801/16838 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14556 event pairs, 169 based on Foata normal form. 29/2518 useless extension candidates. Maximal degree in co-relation 11739. Up to 521 conditions per place. [2024-11-08 16:36:56,877 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 274 selfloop transitions, 31 changer transitions 0/328 dead transitions. [2024-11-08 16:36:56,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 328 transitions, 3682 flow [2024-11-08 16:36:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:36:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 16:36:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 600 transitions. [2024-11-08 16:36:56,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-08 16:36:56,878 INFO L175 Difference]: Start difference. First operand has 154 places, 89 transitions, 815 flow. Second operand 24 states and 600 transitions. [2024-11-08 16:36:56,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 328 transitions, 3682 flow [2024-11-08 16:36:57,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 328 transitions, 3588 flow, removed 2 selfloop flow, removed 23 redundant places. [2024-11-08 16:36:57,018 INFO L231 Difference]: Finished difference. Result has 154 places, 88 transitions, 772 flow [2024-11-08 16:36:57,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=772, PETRI_PLACES=154, PETRI_TRANSITIONS=88} [2024-11-08 16:36:57,019 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 102 predicate places. [2024-11-08 16:36:57,019 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 88 transitions, 772 flow [2024-11-08 16:36:57,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 20.435897435897434) internal successors, (797), 39 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:57,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:57,019 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:57,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-08 16:36:57,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:57,220 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:36:57,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:57,221 INFO L85 PathProgramCache]: Analyzing trace with hash 695063720, now seen corresponding path program 6 times [2024-11-08 16:36:57,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:57,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513002668] [2024-11-08 16:36:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:57,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 29 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:57,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:57,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513002668] [2024-11-08 16:36:57,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513002668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:57,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592055922] [2024-11-08 16:36:57,620 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:36:57,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:57,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:57,622 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:57,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 16:36:57,778 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-08 16:36:57,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:36:57,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:36:57,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 48 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:58,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:36:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 48 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:58,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592055922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:36:58,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:36:58,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 49 [2024-11-08 16:36:58,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622156595] [2024-11-08 16:36:58,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:36:58,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 16:36:58,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 16:36:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=2050, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 16:36:59,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:36:59,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 88 transitions, 772 flow. Second operand has 50 states, 50 states have (on average 13.92) internal successors, (696), 50 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:59,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:59,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:36:59,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:37:01,633 INFO L124 PetriNetUnfolderBase]: 3948/6843 cut-off events. [2024-11-08 16:37:01,633 INFO L125 PetriNetUnfolderBase]: For 30542/30626 co-relation queries the response was YES. [2024-11-08 16:37:01,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32658 conditions, 6843 events. 3948/6843 cut-off events. For 30542/30626 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 42485 event pairs, 1349 based on Foata normal form. 30/6759 useless extension candidates. Maximal degree in co-relation 32616. Up to 2651 conditions per place. [2024-11-08 16:37:01,677 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 315 selfloop transitions, 44 changer transitions 75/447 dead transitions. [2024-11-08 16:37:01,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 447 transitions, 5112 flow [2024-11-08 16:37:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 16:37:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 16:37:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 555 transitions. [2024-11-08 16:37:01,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36038961038961037 [2024-11-08 16:37:01,679 INFO L175 Difference]: Start difference. First operand has 154 places, 88 transitions, 772 flow. Second operand 28 states and 555 transitions. [2024-11-08 16:37:01,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 447 transitions, 5112 flow [2024-11-08 16:37:01,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 447 transitions, 4677 flow, removed 16 selfloop flow, removed 22 redundant places. [2024-11-08 16:37:01,827 INFO L231 Difference]: Finished difference. Result has 171 places, 113 transitions, 1126 flow [2024-11-08 16:37:01,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1126, PETRI_PLACES=171, PETRI_TRANSITIONS=113} [2024-11-08 16:37:01,828 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2024-11-08 16:37:01,828 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 113 transitions, 1126 flow [2024-11-08 16:37:01,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 13.92) internal successors, (696), 50 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:01,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:37:01,828 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:37:01,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-08 16:37:02,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-08 16:37:02,029 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:37:02,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:37:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash -631795494, now seen corresponding path program 5 times [2024-11-08 16:37:02,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:37:02,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684168218] [2024-11-08 16:37:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:37:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:37:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:37:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 29 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:02,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:37:02,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684168218] [2024-11-08 16:37:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684168218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:37:02,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012231502] [2024-11-08 16:37:02,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:37:02,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:02,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:37:02,461 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:37:02,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-08 16:37:02,627 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-08 16:37:02,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:37:02,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:37:02,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:37:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 48 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:03,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:37:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 48 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:03,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012231502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:37:03,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:37:03,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 49 [2024-11-08 16:37:03,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257461369] [2024-11-08 16:37:03,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:37:03,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 16:37:03,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:37:03,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 16:37:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=2050, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 16:37:04,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:37:04,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 113 transitions, 1126 flow. Second operand has 50 states, 50 states have (on average 14.02) internal successors, (701), 50 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:04,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:37:04,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:37:04,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:37:06,482 INFO L124 PetriNetUnfolderBase]: 3446/5538 cut-off events. [2024-11-08 16:37:06,482 INFO L125 PetriNetUnfolderBase]: For 42130/42466 co-relation queries the response was YES. [2024-11-08 16:37:06,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27233 conditions, 5538 events. 3446/5538 cut-off events. For 42130/42466 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 32154 event pairs, 1274 based on Foata normal form. 235/5730 useless extension candidates. Maximal degree in co-relation 27180. Up to 2623 conditions per place. [2024-11-08 16:37:06,536 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 71 selfloop transitions, 20 changer transitions 286/390 dead transitions. [2024-11-08 16:37:06,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 390 transitions, 4771 flow [2024-11-08 16:37:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 16:37:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 16:37:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 513 transitions. [2024-11-08 16:37:06,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33311688311688314 [2024-11-08 16:37:06,538 INFO L175 Difference]: Start difference. First operand has 171 places, 113 transitions, 1126 flow. Second operand 28 states and 513 transitions. [2024-11-08 16:37:06,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 390 transitions, 4771 flow [2024-11-08 16:37:06,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 390 transitions, 4658 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-11-08 16:37:06,693 INFO L231 Difference]: Finished difference. Result has 199 places, 88 transitions, 835 flow [2024-11-08 16:37:06,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=835, PETRI_PLACES=199, PETRI_TRANSITIONS=88} [2024-11-08 16:37:06,694 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 147 predicate places. [2024-11-08 16:37:06,694 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 88 transitions, 835 flow [2024-11-08 16:37:06,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 14.02) internal successors, (701), 50 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:06,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:37:06,695 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-08 16:37:06,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-08 16:37:06,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:06,895 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:37:06,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:37:06,896 INFO L85 PathProgramCache]: Analyzing trace with hash 126900527, now seen corresponding path program 7 times [2024-11-08 16:37:06,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:37:06,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665169930] [2024-11-08 16:37:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:37:06,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:37:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:37:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:07,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:37:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665169930] [2024-11-08 16:37:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665169930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:37:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917702468] [2024-11-08 16:37:07,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:37:07,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:07,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:37:07,730 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:37:07,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-08 16:37:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:37:07,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 16:37:07,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:37:08,138 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 19 treesize of output 1 [2024-11-08 16:37:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:08,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:37:09,059 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 18 treesize of output 16 [2024-11-08 16:37:09,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:37:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:09,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917702468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:37:09,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:37:09,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-11-08 16:37:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718084559] [2024-11-08 16:37:09,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:37:09,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 16:37:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:37:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 16:37:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2593, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 16:37:11,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:37:11,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 88 transitions, 835 flow. Second operand has 53 states, 53 states have (on average 20.358490566037737) internal successors, (1079), 53 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:11,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:37:11,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:37:11,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:37:14,696 INFO L124 PetriNetUnfolderBase]: 1694/3420 cut-off events. [2024-11-08 16:37:14,696 INFO L125 PetriNetUnfolderBase]: For 18417/18451 co-relation queries the response was YES. [2024-11-08 16:37:14,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17035 conditions, 3420 events. 1694/3420 cut-off events. For 18417/18451 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 19947 event pairs, 140 based on Foata normal form. 30/3430 useless extension candidates. Maximal degree in co-relation 16971. Up to 533 conditions per place. [2024-11-08 16:37:14,746 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 349 selfloop transitions, 36 changer transitions 0/409 dead transitions. [2024-11-08 16:37:14,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 409 transitions, 4746 flow [2024-11-08 16:37:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 16:37:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 16:37:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 742 transitions. [2024-11-08 16:37:14,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4652037617554859 [2024-11-08 16:37:14,749 INFO L175 Difference]: Start difference. First operand has 199 places, 88 transitions, 835 flow. Second operand 29 states and 742 transitions. [2024-11-08 16:37:14,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 409 transitions, 4746 flow [2024-11-08 16:37:14,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 409 transitions, 4443 flow, removed 95 selfloop flow, removed 33 redundant places. [2024-11-08 16:37:15,000 INFO L231 Difference]: Finished difference. Result has 166 places, 92 transitions, 902 flow [2024-11-08 16:37:15,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=902, PETRI_PLACES=166, PETRI_TRANSITIONS=92} [2024-11-08 16:37:15,001 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 114 predicate places. [2024-11-08 16:37:15,001 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 92 transitions, 902 flow [2024-11-08 16:37:15,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 20.358490566037737) internal successors, (1079), 53 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:15,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:37:15,002 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-08 16:37:15,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-08 16:37:15,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:15,203 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:37:15,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:37:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash 126900528, now seen corresponding path program 5 times [2024-11-08 16:37:15,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:37:15,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316169075] [2024-11-08 16:37:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:37:15,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:37:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:37:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:15,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:37:15,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316169075] [2024-11-08 16:37:15,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316169075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:37:15,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510040472] [2024-11-08 16:37:15,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:37:15,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:15,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:37:15,999 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:37:16,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-08 16:37:16,177 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 16:37:16,178 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:37:16,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 16:37:16,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:37:16,418 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 19 treesize of output 1 [2024-11-08 16:37:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:16,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:37:17,463 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 16 treesize of output 14 [2024-11-08 16:37:17,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:37:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510040472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:37:17,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:37:17,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-11-08 16:37:17,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759782154] [2024-11-08 16:37:17,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:37:17,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 16:37:17,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:37:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 16:37:17,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2594, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 16:37:19,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:37:19,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 92 transitions, 902 flow. Second operand has 53 states, 53 states have (on average 20.358490566037737) internal successors, (1079), 53 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:19,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:37:19,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:37:19,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:37:22,966 INFO L124 PetriNetUnfolderBase]: 1626/3292 cut-off events. [2024-11-08 16:37:22,966 INFO L125 PetriNetUnfolderBase]: For 19623/19655 co-relation queries the response was YES. [2024-11-08 16:37:22,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15974 conditions, 3292 events. 1626/3292 cut-off events. For 19623/19655 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 19147 event pairs, 107 based on Foata normal form. 30/3303 useless extension candidates. Maximal degree in co-relation 15927. Up to 533 conditions per place. [2024-11-08 16:37:22,992 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 348 selfloop transitions, 36 changer transitions 0/408 dead transitions. [2024-11-08 16:37:22,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 408 transitions, 4522 flow [2024-11-08 16:37:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 16:37:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 16:37:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 741 transitions. [2024-11-08 16:37:22,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.464576802507837 [2024-11-08 16:37:22,994 INFO L175 Difference]: Start difference. First operand has 166 places, 92 transitions, 902 flow. Second operand 29 states and 741 transitions. [2024-11-08 16:37:22,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 408 transitions, 4522 flow [2024-11-08 16:37:23,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 408 transitions, 4423 flow, removed 3 selfloop flow, removed 26 redundant places. [2024-11-08 16:37:23,125 INFO L231 Difference]: Finished difference. Result has 168 places, 91 transitions, 861 flow [2024-11-08 16:37:23,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=861, PETRI_PLACES=168, PETRI_TRANSITIONS=91} [2024-11-08 16:37:23,125 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 116 predicate places. [2024-11-08 16:37:23,125 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 91 transitions, 861 flow [2024-11-08 16:37:23,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 20.358490566037737) internal successors, (1079), 53 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:23,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:37:23,126 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:37:23,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-08 16:37:23,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:23,327 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:37:23,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:37:23,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1175777375, now seen corresponding path program 6 times [2024-11-08 16:37:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:37:23,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423673054] [2024-11-08 16:37:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:37:23,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:37:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:37:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:24,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:37:24,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423673054] [2024-11-08 16:37:24,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423673054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:37:24,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591150121] [2024-11-08 16:37:24,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:37:24,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:24,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:37:24,143 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:37:24,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-08 16:37:24,329 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 16:37:24,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:37:24,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 16:37:24,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:37:24,552 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 19 treesize of output 1 [2024-11-08 16:37:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:25,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:37:25,489 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 18 treesize of output 16 [2024-11-08 16:37:25,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:37:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:25,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591150121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:37:25,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:37:25,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-11-08 16:37:25,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848391061] [2024-11-08 16:37:25,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:37:25,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 16:37:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:37:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 16:37:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2593, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 16:37:27,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:37:27,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 91 transitions, 861 flow. Second operand has 53 states, 53 states have (on average 20.471698113207548) internal successors, (1085), 53 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:27,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:37:27,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:37:27,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:37:30,322 INFO L124 PetriNetUnfolderBase]: 1907/3669 cut-off events. [2024-11-08 16:37:30,323 INFO L125 PetriNetUnfolderBase]: For 27934/28028 co-relation queries the response was YES. [2024-11-08 16:37:30,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17107 conditions, 3669 events. 1907/3669 cut-off events. For 27934/28028 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 21499 event pairs, 193 based on Foata normal form. 33/3665 useless extension candidates. Maximal degree in co-relation 17061. Up to 627 conditions per place. [2024-11-08 16:37:30,352 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 382 selfloop transitions, 36 changer transitions 0/442 dead transitions. [2024-11-08 16:37:30,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 442 transitions, 5778 flow [2024-11-08 16:37:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 16:37:30,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 16:37:30,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 727 transitions. [2024-11-08 16:37:30,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45579937304075235 [2024-11-08 16:37:30,354 INFO L175 Difference]: Start difference. First operand has 168 places, 91 transitions, 861 flow. Second operand 29 states and 727 transitions. [2024-11-08 16:37:30,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 442 transitions, 5778 flow [2024-11-08 16:37:30,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 442 transitions, 5344 flow, removed 0 selfloop flow, removed 26 redundant places. [2024-11-08 16:37:30,573 INFO L231 Difference]: Finished difference. Result has 172 places, 95 transitions, 942 flow [2024-11-08 16:37:30,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=942, PETRI_PLACES=172, PETRI_TRANSITIONS=95} [2024-11-08 16:37:30,574 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 120 predicate places. [2024-11-08 16:37:30,574 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 95 transitions, 942 flow [2024-11-08 16:37:30,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 20.471698113207548) internal successors, (1085), 53 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:30,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:37:30,575 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:37:30,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-08 16:37:30,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:30,775 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:37:30,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:37:30,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1175777376, now seen corresponding path program 6 times [2024-11-08 16:37:30,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:37:30,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046781868] [2024-11-08 16:37:30,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:37:30,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:37:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:37:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:31,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:37:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046781868] [2024-11-08 16:37:31,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046781868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:37:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510666405] [2024-11-08 16:37:31,478 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:37:31,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:31,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:37:31,481 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:37:31,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-08 16:37:31,664 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 16:37:31,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:37:31,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 16:37:31,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:37:31,965 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 23 treesize of output 1 [2024-11-08 16:37:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 40 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:33,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:37:34,569 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 18 treesize of output 16 [2024-11-08 16:37:34,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-08 16:37:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:37:35,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510666405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:37:35,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:37:35,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 23] total 66 [2024-11-08 16:37:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752604618] [2024-11-08 16:37:35,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:37:35,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-08 16:37:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:37:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-08 16:37:35,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=4262, Unknown=0, NotChecked=0, Total=4556 [2024-11-08 16:37:39,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:37:39,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 95 transitions, 942 flow. Second operand has 68 states, 68 states have (on average 13.985294117647058) internal successors, (951), 68 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:39,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:37:39,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:37:39,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:37:54,223 INFO L124 PetriNetUnfolderBase]: 8703/13830 cut-off events. [2024-11-08 16:37:54,224 INFO L125 PetriNetUnfolderBase]: For 108960/109450 co-relation queries the response was YES. [2024-11-08 16:37:54,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70590 conditions, 13830 events. 8703/13830 cut-off events. For 108960/109450 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 91261 event pairs, 459 based on Foata normal form. 165/13928 useless extension candidates. Maximal degree in co-relation 70542. Up to 2337 conditions per place. [2024-11-08 16:37:54,363 INFO L140 encePairwiseOnDemand]: 39/55 looper letters, 1448 selfloop transitions, 125 changer transitions 98/1684 dead transitions. [2024-11-08 16:37:54,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 1684 transitions, 20643 flow [2024-11-08 16:37:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-08 16:37:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2024-11-08 16:37:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 1689 transitions. [2024-11-08 16:37:54,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3745011086474501 [2024-11-08 16:37:54,366 INFO L175 Difference]: Start difference. First operand has 172 places, 95 transitions, 942 flow. Second operand 82 states and 1689 transitions. [2024-11-08 16:37:54,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 1684 transitions, 20643 flow [2024-11-08 16:37:54,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1684 transitions, 20410 flow, removed 11 selfloop flow, removed 26 redundant places. [2024-11-08 16:37:54,932 INFO L231 Difference]: Finished difference. Result has 235 places, 188 transitions, 1915 flow [2024-11-08 16:37:54,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=1915, PETRI_PLACES=235, PETRI_TRANSITIONS=188} [2024-11-08 16:37:54,933 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 183 predicate places. [2024-11-08 16:37:54,933 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 188 transitions, 1915 flow [2024-11-08 16:37:54,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 13.985294117647058) internal successors, (951), 68 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:54,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:37:54,934 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-08 16:37:54,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-08 16:37:55,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:55,134 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:37:55,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:37:55,134 INFO L85 PathProgramCache]: Analyzing trace with hash 923115260, now seen corresponding path program 2 times [2024-11-08 16:37:55,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:37:55,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447286727] [2024-11-08 16:37:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:37:55,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:37:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:37:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 16:37:55,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:37:55,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447286727] [2024-11-08 16:37:55,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447286727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:37:55,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845338756] [2024-11-08 16:37:55,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:37:55,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:55,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:37:55,345 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:37:55,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-08 16:37:55,496 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:37:55,497 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:37:55,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:37:55,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:37:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 16:37:55,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:37:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 16:37:55,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845338756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:37:55,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:37:55,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-08 16:37:55,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347532459] [2024-11-08 16:37:55,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:37:55,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:37:55,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:37:55,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:37:55,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:37:55,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-08 16:37:55,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 188 transitions, 1915 flow. Second operand has 15 states, 15 states have (on average 20.133333333333333) internal successors, (302), 15 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:55,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:37:55,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-08 16:37:55,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:37:58,761 INFO L124 PetriNetUnfolderBase]: 8868/14586 cut-off events. [2024-11-08 16:37:58,762 INFO L125 PetriNetUnfolderBase]: For 97668/99546 co-relation queries the response was YES. [2024-11-08 16:37:58,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79486 conditions, 14586 events. 8868/14586 cut-off events. For 97668/99546 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 96668 event pairs, 451 based on Foata normal form. 404/14695 useless extension candidates. Maximal degree in co-relation 79431. Up to 2436 conditions per place. [2024-11-08 16:37:58,886 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 866 selfloop transitions, 21 changer transitions 0/958 dead transitions. [2024-11-08 16:37:58,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 958 transitions, 12884 flow [2024-11-08 16:37:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:37:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 16:37:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 434 transitions. [2024-11-08 16:37:58,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.526060606060606 [2024-11-08 16:37:58,887 INFO L175 Difference]: Start difference. First operand has 235 places, 188 transitions, 1915 flow. Second operand 15 states and 434 transitions. [2024-11-08 16:37:58,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 958 transitions, 12884 flow [2024-11-08 16:37:59,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 958 transitions, 10832 flow, removed 462 selfloop flow, removed 34 redundant places. [2024-11-08 16:37:59,756 INFO L231 Difference]: Finished difference. Result has 216 places, 190 transitions, 1734 flow [2024-11-08 16:37:59,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1734, PETRI_PLACES=216, PETRI_TRANSITIONS=190} [2024-11-08 16:37:59,757 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 164 predicate places. [2024-11-08 16:37:59,757 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 190 transitions, 1734 flow [2024-11-08 16:37:59,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.133333333333333) internal successors, (302), 15 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:37:59,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:37:59,757 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:37:59,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-08 16:37:59,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:37:59,958 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:37:59,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:37:59,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2124755779, now seen corresponding path program 2 times [2024-11-08 16:37:59,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:37:59,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653414447] [2024-11-08 16:37:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:37:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:37:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:38:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 16:38:00,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:38:00,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653414447] [2024-11-08 16:38:00,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653414447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:38:00,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016957806] [2024-11-08 16:38:00,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:38:00,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:38:00,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:38:00,128 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:38:00,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-08 16:38:00,291 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:38:00,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:38:00,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:38:00,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:38:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 16:38:00,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:38:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 16:38:00,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016957806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:38:00,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:38:00,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-08 16:38:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449605026] [2024-11-08 16:38:00,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:38:00,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:38:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:38:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:38:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:38:00,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-08 16:38:00,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 190 transitions, 1734 flow. Second operand has 15 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:00,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:38:00,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-08 16:38:00,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:38:03,685 INFO L124 PetriNetUnfolderBase]: 9262/14677 cut-off events. [2024-11-08 16:38:03,685 INFO L125 PetriNetUnfolderBase]: For 155762/157744 co-relation queries the response was YES. [2024-11-08 16:38:03,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78345 conditions, 14677 events. 9262/14677 cut-off events. For 155762/157744 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 97022 event pairs, 643 based on Foata normal form. 210/14782 useless extension candidates. Maximal degree in co-relation 78299. Up to 2595 conditions per place. [2024-11-08 16:38:03,955 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 413 selfloop transitions, 62 changer transitions 0/499 dead transitions. [2024-11-08 16:38:03,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 499 transitions, 6373 flow [2024-11-08 16:38:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:38:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 16:38:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 422 transitions. [2024-11-08 16:38:03,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5115151515151515 [2024-11-08 16:38:03,957 INFO L175 Difference]: Start difference. First operand has 216 places, 190 transitions, 1734 flow. Second operand 15 states and 422 transitions. [2024-11-08 16:38:03,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 499 transitions, 6373 flow [2024-11-08 16:38:04,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 499 transitions, 5878 flow, removed 55 selfloop flow, removed 18 redundant places. [2024-11-08 16:38:04,950 INFO L231 Difference]: Finished difference. Result has 213 places, 196 transitions, 1873 flow [2024-11-08 16:38:04,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1873, PETRI_PLACES=213, PETRI_TRANSITIONS=196} [2024-11-08 16:38:04,951 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 161 predicate places. [2024-11-08 16:38:04,951 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 196 transitions, 1873 flow [2024-11-08 16:38:04,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:04,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:38:04,951 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-08 16:38:04,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-08 16:38:05,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:38:05,152 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:38:05,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:38:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash -148279799, now seen corresponding path program 8 times [2024-11-08 16:38:05,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:38:05,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39559728] [2024-11-08 16:38:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:38:05,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:38:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:38:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 50 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:05,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:38:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39559728] [2024-11-08 16:38:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39559728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:38:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023716643] [2024-11-08 16:38:05,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:38:05,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:38:05,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:38:05,610 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:38:05,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-08 16:38:05,791 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:38:05,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:38:05,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 16:38:05,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:38:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 75 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:06,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:38:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 75 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:07,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023716643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:38:07,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:38:07,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 59 [2024-11-08 16:38:07,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408924471] [2024-11-08 16:38:07,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:38:07,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-08 16:38:07,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:38:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-08 16:38:07,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=2983, Unknown=0, NotChecked=0, Total=3540 [2024-11-08 16:38:07,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:38:07,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 196 transitions, 1873 flow. Second operand has 60 states, 60 states have (on average 13.916666666666666) internal successors, (835), 60 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:07,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:38:07,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:38:07,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:38:12,709 INFO L124 PetriNetUnfolderBase]: 9034/15198 cut-off events. [2024-11-08 16:38:12,709 INFO L125 PetriNetUnfolderBase]: For 93909/96586 co-relation queries the response was YES. [2024-11-08 16:38:12,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78799 conditions, 15198 events. 9034/15198 cut-off events. For 93909/96586 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 102993 event pairs, 3587 based on Foata normal form. 214/15133 useless extension candidates. Maximal degree in co-relation 78755. Up to 7477 conditions per place. [2024-11-08 16:38:12,886 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 429 selfloop transitions, 53 changer transitions 167/713 dead transitions. [2024-11-08 16:38:12,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 713 transitions, 8581 flow [2024-11-08 16:38:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 16:38:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-08 16:38:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 635 transitions. [2024-11-08 16:38:12,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-11-08 16:38:12,888 INFO L175 Difference]: Start difference. First operand has 213 places, 196 transitions, 1873 flow. Second operand 33 states and 635 transitions. [2024-11-08 16:38:12,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 713 transitions, 8581 flow [2024-11-08 16:38:13,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 713 transitions, 7677 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-11-08 16:38:13,608 INFO L231 Difference]: Finished difference. Result has 243 places, 216 transitions, 2072 flow [2024-11-08 16:38:13,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2072, PETRI_PLACES=243, PETRI_TRANSITIONS=216} [2024-11-08 16:38:13,609 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 191 predicate places. [2024-11-08 16:38:13,609 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 216 transitions, 2072 flow [2024-11-08 16:38:13,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 13.916666666666666) internal successors, (835), 60 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:13,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:38:13,610 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:38:13,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-08 16:38:13,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:38:13,810 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:38:13,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:38:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash 629219963, now seen corresponding path program 7 times [2024-11-08 16:38:13,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:38:13,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752077727] [2024-11-08 16:38:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:38:13,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:38:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:38:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 50 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:14,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:38:14,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752077727] [2024-11-08 16:38:14,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752077727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:38:14,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958035867] [2024-11-08 16:38:14,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:38:14,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:38:14,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:38:14,249 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:38:14,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-08 16:38:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:38:14,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 16:38:14,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:38:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 75 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:15,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:38:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 75 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958035867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:38:15,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:38:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 59 [2024-11-08 16:38:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786200589] [2024-11-08 16:38:15,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:38:15,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-08 16:38:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:38:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-08 16:38:15,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=2983, Unknown=0, NotChecked=0, Total=3540 [2024-11-08 16:38:16,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:38:16,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 216 transitions, 2072 flow. Second operand has 60 states, 60 states have (on average 13.95) internal successors, (837), 60 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:16,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:38:16,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:38:16,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:38:20,536 INFO L124 PetriNetUnfolderBase]: 7982/12781 cut-off events. [2024-11-08 16:38:20,537 INFO L125 PetriNetUnfolderBase]: For 131619/133364 co-relation queries the response was YES. [2024-11-08 16:38:20,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68289 conditions, 12781 events. 7982/12781 cut-off events. For 131619/133364 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 83500 event pairs, 3489 based on Foata normal form. 362/13051 useless extension candidates. Maximal degree in co-relation 68232. Up to 7389 conditions per place. [2024-11-08 16:38:20,644 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 104 selfloop transitions, 53 changer transitions 392/563 dead transitions. [2024-11-08 16:38:20,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 563 transitions, 7392 flow [2024-11-08 16:38:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 16:38:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-08 16:38:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 596 transitions. [2024-11-08 16:38:20,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32837465564738294 [2024-11-08 16:38:20,646 INFO L175 Difference]: Start difference. First operand has 243 places, 216 transitions, 2072 flow. Second operand 33 states and 596 transitions. [2024-11-08 16:38:20,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 563 transitions, 7392 flow [2024-11-08 16:38:21,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 563 transitions, 7250 flow, removed 53 selfloop flow, removed 14 redundant places. [2024-11-08 16:38:21,546 INFO L231 Difference]: Finished difference. Result has 261 places, 153 transitions, 1482 flow [2024-11-08 16:38:21,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1482, PETRI_PLACES=261, PETRI_TRANSITIONS=153} [2024-11-08 16:38:21,546 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 209 predicate places. [2024-11-08 16:38:21,546 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 153 transitions, 1482 flow [2024-11-08 16:38:21,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 13.95) internal successors, (837), 60 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:21,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:38:21,547 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-08 16:38:21,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-08 16:38:21,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-08 16:38:21,747 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:38:21,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:38:21,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2087635504, now seen corresponding path program 9 times [2024-11-08 16:38:21,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:38:21,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823822629] [2024-11-08 16:38:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:38:21,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:38:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:38:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:22,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:38:22,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823822629] [2024-11-08 16:38:22,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823822629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:38:22,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321404678] [2024-11-08 16:38:22,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:38:22,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:38:22,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:38:22,722 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:38:22,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-08 16:38:22,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 16:38:22,974 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:38:22,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 16:38:22,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:38:23,285 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 19 treesize of output 1 [2024-11-08 16:38:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:24,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:38:24,734 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 18 treesize of output 16 [2024-11-08 16:38:24,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:38:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:24,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321404678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:38:24,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:38:24,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 61 [2024-11-08 16:38:24,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778858223] [2024-11-08 16:38:24,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:38:24,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 16:38:24,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:38:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 16:38:24,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3713, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 16:38:27,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:38:27,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 153 transitions, 1482 flow. Second operand has 63 states, 63 states have (on average 20.349206349206348) internal successors, (1282), 63 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:27,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:38:27,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:38:27,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:38:34,201 INFO L124 PetriNetUnfolderBase]: 4327/8581 cut-off events. [2024-11-08 16:38:34,201 INFO L125 PetriNetUnfolderBase]: For 58441/60729 co-relation queries the response was YES. [2024-11-08 16:38:34,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44088 conditions, 8581 events. 4327/8581 cut-off events. For 58441/60729 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 59727 event pairs, 256 based on Foata normal form. 153/8616 useless extension candidates. Maximal degree in co-relation 44032. Up to 1405 conditions per place. [2024-11-08 16:38:34,281 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 868 selfloop transitions, 42 changer transitions 0/968 dead transitions. [2024-11-08 16:38:34,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 968 transitions, 11246 flow [2024-11-08 16:38:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 16:38:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-08 16:38:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 868 transitions. [2024-11-08 16:38:34,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4641711229946524 [2024-11-08 16:38:34,283 INFO L175 Difference]: Start difference. First operand has 261 places, 153 transitions, 1482 flow. Second operand 34 states and 868 transitions. [2024-11-08 16:38:34,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 968 transitions, 11246 flow [2024-11-08 16:38:34,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 968 transitions, 10583 flow, removed 14 selfloop flow, removed 30 redundant places. [2024-11-08 16:38:34,795 INFO L231 Difference]: Finished difference. Result has 209 places, 157 transitions, 1485 flow [2024-11-08 16:38:34,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1485, PETRI_PLACES=209, PETRI_TRANSITIONS=157} [2024-11-08 16:38:34,796 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 157 predicate places. [2024-11-08 16:38:34,796 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 157 transitions, 1485 flow [2024-11-08 16:38:34,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 20.349206349206348) internal successors, (1282), 63 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:34,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:38:34,797 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-08 16:38:34,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-08 16:38:34,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-08 16:38:34,997 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:38:34,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:38:34,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2087635503, now seen corresponding path program 6 times [2024-11-08 16:38:34,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:38:34,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218147256] [2024-11-08 16:38:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:38:34,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:38:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:38:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:35,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:38:35,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218147256] [2024-11-08 16:38:35,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218147256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:38:35,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730176192] [2024-11-08 16:38:35,966 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:38:35,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:38:35,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:38:35,969 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:38:35,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-08 16:38:36,191 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-08 16:38:36,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:38:36,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 16:38:36,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:38:36,495 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 19 treesize of output 1 [2024-11-08 16:38:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:37,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:38:37,790 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 16 treesize of output 14 [2024-11-08 16:38:37,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:38:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:37,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730176192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:38:37,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:38:37,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 61 [2024-11-08 16:38:37,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148700332] [2024-11-08 16:38:37,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:38:37,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 16:38:37,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:38:37,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 16:38:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3714, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 16:38:40,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:38:40,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 157 transitions, 1485 flow. Second operand has 63 states, 63 states have (on average 20.349206349206348) internal successors, (1282), 63 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:40,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:38:40,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:38:40,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:38:46,298 INFO L124 PetriNetUnfolderBase]: 4200/8394 cut-off events. [2024-11-08 16:38:46,299 INFO L125 PetriNetUnfolderBase]: For 60805/62712 co-relation queries the response was YES. [2024-11-08 16:38:46,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41332 conditions, 8394 events. 4200/8394 cut-off events. For 60805/62712 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 57706 event pairs, 256 based on Foata normal form. 145/8421 useless extension candidates. Maximal degree in co-relation 41289. Up to 1405 conditions per place. [2024-11-08 16:38:46,359 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 867 selfloop transitions, 42 changer transitions 0/967 dead transitions. [2024-11-08 16:38:46,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 967 transitions, 10674 flow [2024-11-08 16:38:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 16:38:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-08 16:38:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 867 transitions. [2024-11-08 16:38:46,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-11-08 16:38:46,361 INFO L175 Difference]: Start difference. First operand has 209 places, 157 transitions, 1485 flow. Second operand 34 states and 867 transitions. [2024-11-08 16:38:46,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 967 transitions, 10674 flow [2024-11-08 16:38:46,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 967 transitions, 10559 flow, removed 4 selfloop flow, removed 31 redundant places. [2024-11-08 16:38:46,754 INFO L231 Difference]: Finished difference. Result has 211 places, 156 transitions, 1439 flow [2024-11-08 16:38:46,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1439, PETRI_PLACES=211, PETRI_TRANSITIONS=156} [2024-11-08 16:38:46,754 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 159 predicate places. [2024-11-08 16:38:46,755 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 156 transitions, 1439 flow [2024-11-08 16:38:46,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 20.349206349206348) internal successors, (1282), 63 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:46,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:38:46,755 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:38:46,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-08 16:38:46,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-08 16:38:46,956 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:38:46,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:38:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash 924193922, now seen corresponding path program 8 times [2024-11-08 16:38:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:38:46,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465184899] [2024-11-08 16:38:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:38:46,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:38:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:38:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:38:47,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465184899] [2024-11-08 16:38:47,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465184899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:38:47,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382153905] [2024-11-08 16:38:47,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:38:47,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:38:47,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:38:47,911 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:38:47,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-08 16:38:48,127 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:38:48,127 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:38:48,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 16:38:48,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:38:48,435 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 19 treesize of output 1 [2024-11-08 16:38:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:49,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:38:49,723 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 18 treesize of output 16 [2024-11-08 16:38:49,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:38:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:38:49,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382153905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:38:49,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:38:49,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 61 [2024-11-08 16:38:49,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997827836] [2024-11-08 16:38:49,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:38:49,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 16:38:49,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:38:49,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 16:38:49,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3713, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 16:38:53,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:38:53,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 156 transitions, 1439 flow. Second operand has 63 states, 63 states have (on average 20.444444444444443) internal successors, (1288), 63 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:53,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:38:53,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:38:53,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:38:58,834 INFO L124 PetriNetUnfolderBase]: 4590/8826 cut-off events. [2024-11-08 16:38:58,834 INFO L125 PetriNetUnfolderBase]: For 79915/81962 co-relation queries the response was YES. [2024-11-08 16:38:58,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43267 conditions, 8826 events. 4590/8826 cut-off events. For 79915/81962 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 60888 event pairs, 471 based on Foata normal form. 80/8744 useless extension candidates. Maximal degree in co-relation 43225. Up to 1624 conditions per place. [2024-11-08 16:38:58,931 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 532 selfloop transitions, 67 changer transitions 0/651 dead transitions. [2024-11-08 16:38:58,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 651 transitions, 8782 flow [2024-11-08 16:38:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 16:38:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-08 16:38:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 850 transitions. [2024-11-08 16:38:58,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-08 16:38:58,933 INFO L175 Difference]: Start difference. First operand has 211 places, 156 transitions, 1439 flow. Second operand 34 states and 850 transitions. [2024-11-08 16:38:58,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 651 transitions, 8782 flow [2024-11-08 16:38:59,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 651 transitions, 8172 flow, removed 0 selfloop flow, removed 31 redundant places. [2024-11-08 16:38:59,992 INFO L231 Difference]: Finished difference. Result has 215 places, 163 transitions, 1629 flow [2024-11-08 16:38:59,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1629, PETRI_PLACES=215, PETRI_TRANSITIONS=163} [2024-11-08 16:38:59,993 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 163 predicate places. [2024-11-08 16:38:59,993 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 163 transitions, 1629 flow [2024-11-08 16:38:59,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 20.444444444444443) internal successors, (1288), 63 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:38:59,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:38:59,994 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:39:00,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-08 16:39:00,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-08 16:39:00,195 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:39:00,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:39:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1320899832, now seen corresponding path program 7 times [2024-11-08 16:39:00,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:39:00,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546175238] [2024-11-08 16:39:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:39:00,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:39:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:39:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:01,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:39:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546175238] [2024-11-08 16:39:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546175238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:39:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260817743] [2024-11-08 16:39:01,459 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:39:01,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:39:01,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:39:01,461 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:39:01,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-08 16:39:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:39:01,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-08 16:39:01,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:39:02,017 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 19 treesize of output 1 [2024-11-08 16:39:02,121 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-08 16:39:02,122 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 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-08 16:39:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:02,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:39:03,813 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 23 treesize of output 21 [2024-11-08 16:39:03,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2024-11-08 16:39:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:03,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260817743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:39:03,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:39:03,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 67 [2024-11-08 16:39:03,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288235758] [2024-11-08 16:39:03,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:39:03,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-08 16:39:03,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:39:03,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-08 16:39:03,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=4471, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 16:39:07,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:39:07,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 163 transitions, 1629 flow. Second operand has 69 states, 69 states have (on average 20.405797101449274) internal successors, (1408), 69 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:39:07,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:39:07,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:39:07,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:39:13,663 INFO L124 PetriNetUnfolderBase]: 4521/8720 cut-off events. [2024-11-08 16:39:13,663 INFO L125 PetriNetUnfolderBase]: For 79859/81863 co-relation queries the response was YES. [2024-11-08 16:39:13,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43771 conditions, 8720 events. 4521/8720 cut-off events. For 79859/81863 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 60109 event pairs, 420 based on Foata normal form. 42/8600 useless extension candidates. Maximal degree in co-relation 43727. Up to 1518 conditions per place. [2024-11-08 16:39:13,760 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 528 selfloop transitions, 70 changer transitions 0/650 dead transitions. [2024-11-08 16:39:13,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 650 transitions, 8335 flow [2024-11-08 16:39:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 16:39:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-08 16:39:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 868 transitions. [2024-11-08 16:39:13,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4509090909090909 [2024-11-08 16:39:13,763 INFO L175 Difference]: Start difference. First operand has 215 places, 163 transitions, 1629 flow. Second operand 35 states and 868 transitions. [2024-11-08 16:39:13,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 650 transitions, 8335 flow [2024-11-08 16:39:14,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 650 transitions, 8187 flow, removed 1 selfloop flow, removed 30 redundant places. [2024-11-08 16:39:14,837 INFO L231 Difference]: Finished difference. Result has 219 places, 162 transitions, 1608 flow [2024-11-08 16:39:14,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1608, PETRI_PLACES=219, PETRI_TRANSITIONS=162} [2024-11-08 16:39:14,838 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 167 predicate places. [2024-11-08 16:39:14,839 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 162 transitions, 1608 flow [2024-11-08 16:39:14,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 20.405797101449274) internal successors, (1408), 69 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:39:14,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:39:14,840 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-08 16:39:14,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-08 16:39:15,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:39:15,041 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:39:15,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:39:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1830777366, now seen corresponding path program 10 times [2024-11-08 16:39:15,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:39:15,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306487761] [2024-11-08 16:39:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:39:15,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:39:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:39:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 77 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:15,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:39:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306487761] [2024-11-08 16:39:15,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306487761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:39:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900700522] [2024-11-08 16:39:15,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:39:15,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:39:15,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:39:15,872 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:39:15,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-08 16:39:16,098 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:39:16,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:39:16,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 16:39:16,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:39:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 108 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:17,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:39:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 108 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900700522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:39:17,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:39:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 69 [2024-11-08 16:39:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428826101] [2024-11-08 16:39:17,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:39:17,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-08 16:39:17,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:39:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-08 16:39:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=4090, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 16:39:18,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:39:18,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 162 transitions, 1608 flow. Second operand has 70 states, 70 states have (on average 13.914285714285715) internal successors, (974), 70 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:39:18,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:39:18,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:39:18,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:39:23,367 INFO L124 PetriNetUnfolderBase]: 7252/11983 cut-off events. [2024-11-08 16:39:23,367 INFO L125 PetriNetUnfolderBase]: For 76988/79730 co-relation queries the response was YES. [2024-11-08 16:39:23,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64966 conditions, 11983 events. 7252/11983 cut-off events. For 76988/79730 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 76070 event pairs, 2249 based on Foata normal form. 255/11992 useless extension candidates. Maximal degree in co-relation 64923. Up to 4676 conditions per place. [2024-11-08 16:39:23,474 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 494 selfloop transitions, 60 changer transitions 188/786 dead transitions. [2024-11-08 16:39:23,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 786 transitions, 9855 flow [2024-11-08 16:39:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 16:39:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-08 16:39:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 730 transitions. [2024-11-08 16:39:23,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3492822966507177 [2024-11-08 16:39:23,476 INFO L175 Difference]: Start difference. First operand has 219 places, 162 transitions, 1608 flow. Second operand 38 states and 730 transitions. [2024-11-08 16:39:23,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 786 transitions, 9855 flow [2024-11-08 16:39:24,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 786 transitions, 9106 flow, removed 2 selfloop flow, removed 33 redundant places. [2024-11-08 16:39:24,297 INFO L231 Difference]: Finished difference. Result has 237 places, 188 transitions, 1949 flow [2024-11-08 16:39:24,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1949, PETRI_PLACES=237, PETRI_TRANSITIONS=188} [2024-11-08 16:39:24,298 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 185 predicate places. [2024-11-08 16:39:24,298 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 188 transitions, 1949 flow [2024-11-08 16:39:24,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 13.914285714285715) internal successors, (974), 70 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:39:24,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:39:24,299 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:39:24,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-08 16:39:24,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:39:24,499 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:39:24,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:39:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash -307021156, now seen corresponding path program 9 times [2024-11-08 16:39:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:39:24,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111077533] [2024-11-08 16:39:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:39:24,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:39:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:39:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 77 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:39:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111077533] [2024-11-08 16:39:25,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111077533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:39:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684832371] [2024-11-08 16:39:25,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:39:25,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:39:25,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:39:25,097 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:39:25,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-08 16:39:25,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 16:39:25,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:39:25,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 16:39:25,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:39:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 108 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:26,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:39:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 108 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:27,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684832371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:39:27,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:39:27,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 69 [2024-11-08 16:39:27,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601233710] [2024-11-08 16:39:27,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:39:27,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-08 16:39:27,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:39:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-08 16:39:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=4090, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 16:39:27,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:39:27,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 188 transitions, 1949 flow. Second operand has 70 states, 70 states have (on average 13.942857142857143) internal successors, (976), 70 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:39:27,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:39:27,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:39:27,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:39:31,259 INFO L124 PetriNetUnfolderBase]: 6311/10012 cut-off events. [2024-11-08 16:39:31,259 INFO L125 PetriNetUnfolderBase]: For 119774/123026 co-relation queries the response was YES. [2024-11-08 16:39:31,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54653 conditions, 10012 events. 6311/10012 cut-off events. For 119774/123026 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 61697 event pairs, 2160 based on Foata normal form. 518/10467 useless extension candidates. Maximal degree in co-relation 54597. Up to 4581 conditions per place. [2024-11-08 16:39:31,357 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 88 selfloop transitions, 36 changer transitions 520/658 dead transitions. [2024-11-08 16:39:31,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 658 transitions, 9055 flow [2024-11-08 16:39:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 16:39:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-08 16:39:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 684 transitions. [2024-11-08 16:39:31,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-11-08 16:39:31,359 INFO L175 Difference]: Start difference. First operand has 237 places, 188 transitions, 1949 flow. Second operand 38 states and 684 transitions. [2024-11-08 16:39:31,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 658 transitions, 9055 flow [2024-11-08 16:39:32,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 658 transitions, 8786 flow, removed 101 selfloop flow, removed 16 redundant places. [2024-11-08 16:39:32,315 INFO L231 Difference]: Finished difference. Result has 258 places, 117 transitions, 1191 flow [2024-11-08 16:39:32,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1191, PETRI_PLACES=258, PETRI_TRANSITIONS=117} [2024-11-08 16:39:32,316 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 206 predicate places. [2024-11-08 16:39:32,316 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 117 transitions, 1191 flow [2024-11-08 16:39:32,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 13.942857142857143) internal successors, (976), 70 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:39:32,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:39:32,317 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-08 16:39:32,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-08 16:39:32,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:39:32,519 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:39:32,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:39:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1891464975, now seen corresponding path program 11 times [2024-11-08 16:39:32,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:39:32,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226259334] [2024-11-08 16:39:32,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:39:32,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:39:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:39:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:33,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:39:33,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226259334] [2024-11-08 16:39:33,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226259334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:39:33,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943618907] [2024-11-08 16:39:33,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:39:33,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:39:33,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:39:33,863 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:39:33,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-08 16:39:34,102 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-08 16:39:34,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:39:34,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-08 16:39:34,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:39:34,181 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 [2024-11-08 16:39:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:34,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:39:35,549 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 18 treesize of output 16 [2024-11-08 16:39:35,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:39:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:36,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943618907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:39:36,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:39:36,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 67 [2024-11-08 16:39:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434671081] [2024-11-08 16:39:36,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:39:36,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-08 16:39:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:39:36,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-08 16:39:36,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=4481, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 16:39:40,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:39:40,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 117 transitions, 1191 flow. Second operand has 69 states, 69 states have (on average 20.318840579710145) internal successors, (1402), 69 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:39:40,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:39:40,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:39:40,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:39:46,254 INFO L124 PetriNetUnfolderBase]: 2737/5440 cut-off events. [2024-11-08 16:39:46,254 INFO L125 PetriNetUnfolderBase]: For 39779/41054 co-relation queries the response was YES. [2024-11-08 16:39:46,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29561 conditions, 5440 events. 2737/5440 cut-off events. For 39779/41054 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 33496 event pairs, 184 based on Foata normal form. 43/5381 useless extension candidates. Maximal degree in co-relation 29505. Up to 867 conditions per place. [2024-11-08 16:39:46,301 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 628 selfloop transitions, 48 changer transitions 0/713 dead transitions. [2024-11-08 16:39:46,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 713 transitions, 8694 flow [2024-11-08 16:39:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 16:39:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-08 16:39:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 996 transitions. [2024-11-08 16:39:46,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4643356643356643 [2024-11-08 16:39:46,303 INFO L175 Difference]: Start difference. First operand has 258 places, 117 transitions, 1191 flow. Second operand 39 states and 996 transitions. [2024-11-08 16:39:46,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 713 transitions, 8694 flow [2024-11-08 16:39:46,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 713 transitions, 7622 flow, removed 19 selfloop flow, removed 35 redundant places. [2024-11-08 16:39:46,758 INFO L231 Difference]: Finished difference. Result has 202 places, 124 transitions, 1251 flow [2024-11-08 16:39:46,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1251, PETRI_PLACES=202, PETRI_TRANSITIONS=124} [2024-11-08 16:39:46,759 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 150 predicate places. [2024-11-08 16:39:46,759 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 124 transitions, 1251 flow [2024-11-08 16:39:46,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 20.318840579710145) internal successors, (1402), 69 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:39:46,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:39:46,759 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-08 16:39:46,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-08 16:39:46,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:39:46,960 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:39:46,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:39:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1891464974, now seen corresponding path program 7 times [2024-11-08 16:39:46,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:39:46,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078149897] [2024-11-08 16:39:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:39:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:39:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:39:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:48,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:39:48,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078149897] [2024-11-08 16:39:48,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078149897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:39:48,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866627615] [2024-11-08 16:39:48,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:39:48,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:39:48,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:39:48,246 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:39:48,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-08 16:39:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:39:48,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-08 16:39:48,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:39:48,927 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 19 treesize of output 1 [2024-11-08 16:39:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:49,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:39:50,630 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 16 treesize of output 14 [2024-11-08 16:39:50,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:39:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:39:50,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866627615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:39:50,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:39:50,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 71 [2024-11-08 16:39:50,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113252030] [2024-11-08 16:39:50,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:39:50,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-08 16:39:50,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:39:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-08 16:39:50,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=5033, Unknown=0, NotChecked=0, Total=5256 [2024-11-08 16:39:55,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:39:55,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 124 transitions, 1251 flow. Second operand has 73 states, 73 states have (on average 20.34246575342466) internal successors, (1485), 73 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:39:55,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:39:55,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:39:55,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:40:02,174 INFO L124 PetriNetUnfolderBase]: 2676/5371 cut-off events. [2024-11-08 16:40:02,174 INFO L125 PetriNetUnfolderBase]: For 38134/39093 co-relation queries the response was YES. [2024-11-08 16:40:02,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27603 conditions, 5371 events. 2676/5371 cut-off events. For 38134/39093 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 32898 event pairs, 184 based on Foata normal form. 45/5314 useless extension candidates. Maximal degree in co-relation 27560. Up to 867 conditions per place. [2024-11-08 16:40:02,225 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 627 selfloop transitions, 48 changer transitions 0/712 dead transitions. [2024-11-08 16:40:02,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 712 transitions, 7738 flow [2024-11-08 16:40:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 16:40:02,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-08 16:40:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 995 transitions. [2024-11-08 16:40:02,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46386946386946387 [2024-11-08 16:40:02,228 INFO L175 Difference]: Start difference. First operand has 202 places, 124 transitions, 1251 flow. Second operand 39 states and 995 transitions. [2024-11-08 16:40:02,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 712 transitions, 7738 flow [2024-11-08 16:40:02,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 712 transitions, 7607 flow, removed 9 selfloop flow, removed 34 redundant places. [2024-11-08 16:40:02,803 INFO L231 Difference]: Finished difference. Result has 206 places, 123 transitions, 1200 flow [2024-11-08 16:40:02,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1200, PETRI_PLACES=206, PETRI_TRANSITIONS=123} [2024-11-08 16:40:02,803 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 154 predicate places. [2024-11-08 16:40:02,803 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 123 transitions, 1200 flow [2024-11-08 16:40:02,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 20.34246575342466) internal successors, (1485), 73 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:40:02,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:40:02,804 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:40:02,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-08 16:40:03,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-08 16:40:03,004 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:40:03,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:40:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1501728739, now seen corresponding path program 10 times [2024-11-08 16:40:03,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:40:03,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588859176] [2024-11-08 16:40:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:40:03,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:40:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:40:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:04,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:40:04,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588859176] [2024-11-08 16:40:04,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588859176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:40:04,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482545860] [2024-11-08 16:40:04,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:40:04,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:40:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:40:04,173 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:40:04,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-08 16:40:04,415 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:40:04,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:40:04,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-08 16:40:04,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:40:04,887 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 19 treesize of output 1 [2024-11-08 16:40:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:05,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:40:06,603 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 18 treesize of output 16 [2024-11-08 16:40:06,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:40:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:06,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482545860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:40:06,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:40:06,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 71 [2024-11-08 16:40:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023780320] [2024-11-08 16:40:06,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:40:06,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-08 16:40:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:40:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-08 16:40:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=5033, Unknown=0, NotChecked=0, Total=5256 [2024-11-08 16:40:10,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:40:10,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 123 transitions, 1200 flow. Second operand has 73 states, 73 states have (on average 20.424657534246574) internal successors, (1491), 73 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:40:10,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:40:10,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:40:10,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:40:16,949 INFO L124 PetriNetUnfolderBase]: 3025/5743 cut-off events. [2024-11-08 16:40:16,950 INFO L125 PetriNetUnfolderBase]: For 60015/62084 co-relation queries the response was YES. [2024-11-08 16:40:16,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28625 conditions, 5743 events. 3025/5743 cut-off events. For 60015/62084 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 34935 event pairs, 294 based on Foata normal form. 46/5637 useless extension candidates. Maximal degree in co-relation 28583. Up to 1037 conditions per place. [2024-11-08 16:40:17,002 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 695 selfloop transitions, 48 changer transitions 0/781 dead transitions. [2024-11-08 16:40:17,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 781 transitions, 11344 flow [2024-11-08 16:40:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 16:40:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-08 16:40:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 975 transitions. [2024-11-08 16:40:17,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-08 16:40:17,004 INFO L175 Difference]: Start difference. First operand has 206 places, 123 transitions, 1200 flow. Second operand 39 states and 975 transitions. [2024-11-08 16:40:17,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 781 transitions, 11344 flow [2024-11-08 16:40:17,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 781 transitions, 10507 flow, removed 0 selfloop flow, removed 36 redundant places. [2024-11-08 16:40:17,646 INFO L231 Difference]: Finished difference. Result has 211 places, 129 transitions, 1309 flow [2024-11-08 16:40:17,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1309, PETRI_PLACES=211, PETRI_TRANSITIONS=129} [2024-11-08 16:40:17,647 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 159 predicate places. [2024-11-08 16:40:17,647 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 129 transitions, 1309 flow [2024-11-08 16:40:17,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 20.424657534246574) internal successors, (1491), 73 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:40:17,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:40:17,647 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:40:17,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-08 16:40:17,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-08 16:40:17,848 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:40:17,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:40:17,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1501728738, now seen corresponding path program 8 times [2024-11-08 16:40:17,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:40:17,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243992938] [2024-11-08 16:40:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:40:17,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:40:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:40:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:19,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:40:19,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243992938] [2024-11-08 16:40:19,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243992938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:40:19,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396487820] [2024-11-08 16:40:19,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:40:19,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:40:19,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:40:19,040 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:40:19,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-08 16:40:19,294 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:40:19,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:40:19,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-08 16:40:19,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:40:19,707 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 19 treesize of output 1 [2024-11-08 16:40:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:20,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:40:21,330 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 16 treesize of output 14 [2024-11-08 16:40:21,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:40:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396487820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:40:21,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:40:21,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 71 [2024-11-08 16:40:21,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297875429] [2024-11-08 16:40:21,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:40:21,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-08 16:40:21,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:40:21,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-08 16:40:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=5033, Unknown=0, NotChecked=0, Total=5256 [2024-11-08 16:40:25,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:40:25,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 129 transitions, 1309 flow. Second operand has 73 states, 73 states have (on average 20.424657534246574) internal successors, (1491), 73 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:40:25,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:40:25,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:40:25,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:40:31,604 INFO L124 PetriNetUnfolderBase]: 2946/5623 cut-off events. [2024-11-08 16:40:31,604 INFO L125 PetriNetUnfolderBase]: For 58493/60490 co-relation queries the response was YES. [2024-11-08 16:40:31,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28743 conditions, 5623 events. 2946/5623 cut-off events. For 58493/60490 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 34151 event pairs, 294 based on Foata normal form. 46/5517 useless extension candidates. Maximal degree in co-relation 28698. Up to 1037 conditions per place. [2024-11-08 16:40:31,658 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 694 selfloop transitions, 48 changer transitions 0/780 dead transitions. [2024-11-08 16:40:31,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 780 transitions, 10623 flow [2024-11-08 16:40:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 16:40:31,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-08 16:40:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 974 transitions. [2024-11-08 16:40:31,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4540792540792541 [2024-11-08 16:40:31,661 INFO L175 Difference]: Start difference. First operand has 211 places, 129 transitions, 1309 flow. Second operand 39 states and 974 transitions. [2024-11-08 16:40:31,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 780 transitions, 10623 flow [2024-11-08 16:40:32,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 780 transitions, 10517 flow, removed 3 selfloop flow, removed 34 redundant places. [2024-11-08 16:40:32,260 INFO L231 Difference]: Finished difference. Result has 215 places, 128 transitions, 1287 flow [2024-11-08 16:40:32,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1287, PETRI_PLACES=215, PETRI_TRANSITIONS=128} [2024-11-08 16:40:32,261 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 163 predicate places. [2024-11-08 16:40:32,261 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 128 transitions, 1287 flow [2024-11-08 16:40:32,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 20.424657534246574) internal successors, (1491), 73 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:40:32,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:40:32,261 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-08 16:40:32,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-08 16:40:32,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:40:32,462 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:40:32,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:40:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash -860535733, now seen corresponding path program 12 times [2024-11-08 16:40:32,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:40:32,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899169886] [2024-11-08 16:40:32,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:40:32,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:40:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:40:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 110 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:33,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:40:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899169886] [2024-11-08 16:40:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899169886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:40:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772671507] [2024-11-08 16:40:33,314 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:40:33,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:40:33,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:40:33,317 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:40:33,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-08 16:40:33,644 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-08 16:40:33,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:40:33,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 16:40:33,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:40:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 147 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:34,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:40:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 147 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772671507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:40:35,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:40:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 79 [2024-11-08 16:40:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362806962] [2024-11-08 16:40:35,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:40:35,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-08 16:40:35,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:40:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-08 16:40:35,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=949, Invalid=5371, Unknown=0, NotChecked=0, Total=6320 [2024-11-08 16:40:36,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:40:36,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 128 transitions, 1287 flow. Second operand has 80 states, 80 states have (on average 13.9125) internal successors, (1113), 80 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:40:36,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:40:36,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:40:36,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:40:41,794 INFO L124 PetriNetUnfolderBase]: 9613/15736 cut-off events. [2024-11-08 16:40:41,794 INFO L125 PetriNetUnfolderBase]: For 93225/95210 co-relation queries the response was YES. [2024-11-08 16:40:41,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87902 conditions, 15736 events. 9613/15736 cut-off events. For 93225/95210 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 101546 event pairs, 2873 based on Foata normal form. 56/15492 useless extension candidates. Maximal degree in co-relation 87858. Up to 5969 conditions per place. [2024-11-08 16:40:41,953 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 633 selfloop transitions, 70 changer transitions 240/968 dead transitions. [2024-11-08 16:40:41,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 968 transitions, 12377 flow [2024-11-08 16:40:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 16:40:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-08 16:40:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 848 transitions. [2024-11-08 16:40:41,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3585623678646934 [2024-11-08 16:40:41,955 INFO L175 Difference]: Start difference. First operand has 215 places, 128 transitions, 1287 flow. Second operand 43 states and 848 transitions. [2024-11-08 16:40:41,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 968 transitions, 12377 flow [2024-11-08 16:40:43,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 968 transitions, 11425 flow, removed 0 selfloop flow, removed 36 redundant places. [2024-11-08 16:40:43,632 INFO L231 Difference]: Finished difference. Result has 240 places, 171 transitions, 1972 flow [2024-11-08 16:40:43,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1972, PETRI_PLACES=240, PETRI_TRANSITIONS=171} [2024-11-08 16:40:43,633 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-11-08 16:40:43,633 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 171 transitions, 1972 flow [2024-11-08 16:40:43,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 13.9125) internal successors, (1113), 80 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:40:43,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:40:43,633 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:40:43,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-08 16:40:43,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-08 16:40:43,834 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:40:43,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:40:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash 953411901, now seen corresponding path program 11 times [2024-11-08 16:40:43,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:40:43,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586467076] [2024-11-08 16:40:43,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:40:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:40:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:40:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 110 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:44,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:40:44,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586467076] [2024-11-08 16:40:44,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586467076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:40:44,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359457928] [2024-11-08 16:40:44,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:40:44,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:40:44,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:40:44,584 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:40:44,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-08 16:40:44,866 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-08 16:40:44,866 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:40:44,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 16:40:44,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:40:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 147 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:45,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:40:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 147 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:46,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359457928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:40:46,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:40:46,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 79 [2024-11-08 16:40:46,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226705366] [2024-11-08 16:40:46,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:40:46,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-08 16:40:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:40:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-08 16:40:46,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=949, Invalid=5371, Unknown=0, NotChecked=0, Total=6320 [2024-11-08 16:40:47,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:40:47,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 171 transitions, 1972 flow. Second operand has 80 states, 80 states have (on average 13.9375) internal successors, (1115), 80 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:40:47,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:40:47,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:40:47,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:40:52,332 INFO L124 PetriNetUnfolderBase]: 8664/13447 cut-off events. [2024-11-08 16:40:52,333 INFO L125 PetriNetUnfolderBase]: For 199119/207224 co-relation queries the response was YES. [2024-11-08 16:40:52,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76169 conditions, 13447 events. 8664/13447 cut-off events. For 199119/207224 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 82140 event pairs, 2745 based on Foata normal form. 705/14066 useless extension candidates. Maximal degree in co-relation 76106. Up to 5859 conditions per place. [2024-11-08 16:40:52,501 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 98 selfloop transitions, 40 changer transitions 699/852 dead transitions. [2024-11-08 16:40:52,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 852 transitions, 12345 flow [2024-11-08 16:40:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 16:40:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-08 16:40:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 779 transitions. [2024-11-08 16:40:52,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3293868921775899 [2024-11-08 16:40:52,503 INFO L175 Difference]: Start difference. First operand has 240 places, 171 transitions, 1972 flow. Second operand 43 states and 779 transitions. [2024-11-08 16:40:52,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 852 transitions, 12345 flow [2024-11-08 16:40:54,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 852 transitions, 12039 flow, removed 139 selfloop flow, removed 14 redundant places. [2024-11-08 16:40:54,168 INFO L231 Difference]: Finished difference. Result has 284 places, 130 transitions, 1447 flow [2024-11-08 16:40:54,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1447, PETRI_PLACES=284, PETRI_TRANSITIONS=130} [2024-11-08 16:40:54,169 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 232 predicate places. [2024-11-08 16:40:54,169 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 130 transitions, 1447 flow [2024-11-08 16:40:54,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 13.9375) internal successors, (1115), 80 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:40:54,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:40:54,169 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-08 16:40:54,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-08 16:40:54,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-08 16:40:54,370 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:40:54,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:40:54,370 INFO L85 PathProgramCache]: Analyzing trace with hash -782605678, now seen corresponding path program 13 times [2024-11-08 16:40:54,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:40:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995319824] [2024-11-08 16:40:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:40:54,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:40:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:40:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:55,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:40:55,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995319824] [2024-11-08 16:40:55,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995319824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:40:55,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852549168] [2024-11-08 16:40:55,757 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:40:55,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:40:55,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:40:55,759 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:40:55,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-08 16:40:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:40:56,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-08 16:40:56,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:40:56,574 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 19 treesize of output 1 [2024-11-08 16:40:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:57,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:40:58,766 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 18 treesize of output 16 [2024-11-08 16:40:58,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-08 16:40:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:40:58,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852549168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:40:58,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:40:58,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 81 [2024-11-08 16:40:58,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244915328] [2024-11-08 16:40:58,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:40:58,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-08 16:40:58,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:40:58,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-08 16:40:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=6554, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 16:41:05,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:41:05,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 130 transitions, 1447 flow. Second operand has 83 states, 83 states have (on average 20.337349397590362) internal successors, (1688), 83 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:41:05,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:05,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:41:05,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:15,218 INFO L124 PetriNetUnfolderBase]: 3404/6759 cut-off events. [2024-11-08 16:41:15,218 INFO L125 PetriNetUnfolderBase]: For 56851/58424 co-relation queries the response was YES. [2024-11-08 16:41:15,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39612 conditions, 6759 events. 3404/6759 cut-off events. For 56851/58424 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 42580 event pairs, 155 based on Foata normal form. 52/6708 useless extension candidates. Maximal degree in co-relation 39532. Up to 1053 conditions per place. [2024-11-08 16:41:15,303 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 812 selfloop transitions, 55 changer transitions 0/906 dead transitions. [2024-11-08 16:41:15,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 906 transitions, 11867 flow [2024-11-08 16:41:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 16:41:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-08 16:41:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1124 transitions. [2024-11-08 16:41:15,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4644628099173554 [2024-11-08 16:41:15,306 INFO L175 Difference]: Start difference. First operand has 284 places, 130 transitions, 1447 flow. Second operand 44 states and 1124 transitions. [2024-11-08 16:41:15,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 906 transitions, 11867 flow [2024-11-08 16:41:16,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 906 transitions, 11105 flow, removed 227 selfloop flow, removed 51 redundant places. [2024-11-08 16:41:16,129 INFO L231 Difference]: Finished difference. Result has 232 places, 137 transitions, 1567 flow [2024-11-08 16:41:16,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1567, PETRI_PLACES=232, PETRI_TRANSITIONS=137} [2024-11-08 16:41:16,130 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-11-08 16:41:16,130 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 137 transitions, 1567 flow [2024-11-08 16:41:16,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 20.337349397590362) internal successors, (1688), 83 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:41:16,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:16,130 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:16,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-08 16:41:16,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:16,331 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:41:16,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:16,331 INFO L85 PathProgramCache]: Analyzing trace with hash -782605677, now seen corresponding path program 8 times [2024-11-08 16:41:16,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:16,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213592417] [2024-11-08 16:41:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:16,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:17,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:17,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213592417] [2024-11-08 16:41:17,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213592417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:17,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248873754] [2024-11-08 16:41:17,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:41:17,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:17,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:17,663 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:17,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-08 16:41:17,936 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:41:17,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:41:17,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-08 16:41:17,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:18,516 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 19 treesize of output 1 [2024-11-08 16:41:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:19,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:20,569 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 16 treesize of output 14 [2024-11-08 16:41:20,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:41:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:20,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248873754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:41:20,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:41:20,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 81 [2024-11-08 16:41:20,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779518809] [2024-11-08 16:41:20,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:41:20,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-08 16:41:20,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-08 16:41:20,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=6554, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 16:41:25,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:41:25,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 137 transitions, 1567 flow. Second operand has 83 states, 83 states have (on average 20.337349397590362) internal successors, (1688), 83 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:41:25,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:25,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:41:25,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:34,926 INFO L124 PetriNetUnfolderBase]: 3323/6634 cut-off events. [2024-11-08 16:41:34,926 INFO L125 PetriNetUnfolderBase]: For 60327/61579 co-relation queries the response was YES. [2024-11-08 16:41:34,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38457 conditions, 6634 events. 3323/6634 cut-off events. For 60327/61579 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 41606 event pairs, 155 based on Foata normal form. 52/6583 useless extension candidates. Maximal degree in co-relation 38405. Up to 1053 conditions per place. [2024-11-08 16:41:35,001 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 811 selfloop transitions, 55 changer transitions 0/905 dead transitions. [2024-11-08 16:41:35,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 905 transitions, 11236 flow [2024-11-08 16:41:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 16:41:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-08 16:41:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1123 transitions. [2024-11-08 16:41:35,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4640495867768595 [2024-11-08 16:41:35,004 INFO L175 Difference]: Start difference. First operand has 232 places, 137 transitions, 1567 flow. Second operand 44 states and 1123 transitions. [2024-11-08 16:41:35,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 905 transitions, 11236 flow [2024-11-08 16:41:35,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 905 transitions, 11071 flow, removed 13 selfloop flow, removed 41 redundant places. [2024-11-08 16:41:35,885 INFO L231 Difference]: Finished difference. Result has 234 places, 136 transitions, 1495 flow [2024-11-08 16:41:35,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1495, PETRI_PLACES=234, PETRI_TRANSITIONS=136} [2024-11-08 16:41:35,886 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 182 predicate places. [2024-11-08 16:41:35,886 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 136 transitions, 1495 flow [2024-11-08 16:41:35,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 20.337349397590362) internal successors, (1688), 83 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:41:35,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:35,886 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:35,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-08 16:41:36,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:36,087 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:41:36,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1465216572, now seen corresponding path program 12 times [2024-11-08 16:41:36,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:36,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14706202] [2024-11-08 16:41:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:36,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:37,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:37,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14706202] [2024-11-08 16:41:37,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14706202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:37,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493593547] [2024-11-08 16:41:37,375 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:41:37,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:37,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:37,377 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:37,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-08 16:41:37,686 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-08 16:41:37,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:41:37,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-08 16:41:37,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:38,401 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 23 treesize of output 1 [2024-11-08 16:41:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 133 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:40,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:43,331 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 20 treesize of output 18 [2024-11-08 16:41:43,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-08 16:41:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 126 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:45,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493593547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:41:45,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:41:45,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 35, 35] total 102 [2024-11-08 16:41:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835492496] [2024-11-08 16:41:45,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:41:45,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-08 16:41:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:45,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-08 16:41:45,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=10115, Unknown=0, NotChecked=0, Total=10712 [2024-11-08 16:41:51,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:41:51,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 136 transitions, 1495 flow. Second operand has 104 states, 104 states have (on average 13.990384615384615) internal successors, (1455), 104 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:41:51,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:51,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:41:51,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:42:20,661 INFO L124 PetriNetUnfolderBase]: 18177/27638 cut-off events. [2024-11-08 16:42:20,661 INFO L125 PetriNetUnfolderBase]: For 465038/486119 co-relation queries the response was YES. [2024-11-08 16:42:20,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165742 conditions, 27638 events. 18177/27638 cut-off events. For 465038/486119 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 180230 event pairs, 639 based on Foata normal form. 183/27711 useless extension candidates. Maximal degree in co-relation 165691. Up to 4655 conditions per place. [2024-11-08 16:42:20,939 INFO L140 encePairwiseOnDemand]: 39/55 looper letters, 3292 selfloop transitions, 189 changer transitions 299/3796 dead transitions. [2024-11-08 16:42:20,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 3796 transitions, 60481 flow [2024-11-08 16:42:20,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-08 16:42:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2024-11-08 16:42:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 2559 transitions. [2024-11-08 16:42:20,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37521994134897363 [2024-11-08 16:42:20,944 INFO L175 Difference]: Start difference. First operand has 234 places, 136 transitions, 1495 flow. Second operand 124 states and 2559 transitions. [2024-11-08 16:42:20,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 3796 transitions, 60481 flow [2024-11-08 16:42:25,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 3796 transitions, 56222 flow, removed 0 selfloop flow, removed 41 redundant places. [2024-11-08 16:42:25,121 INFO L231 Difference]: Finished difference. Result has 326 places, 268 transitions, 3125 flow [2024-11-08 16:42:25,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=124, PETRI_FLOW=3125, PETRI_PLACES=326, PETRI_TRANSITIONS=268} [2024-11-08 16:42:25,122 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 274 predicate places. [2024-11-08 16:42:25,122 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 268 transitions, 3125 flow [2024-11-08 16:42:25,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 13.990384615384615) internal successors, (1455), 104 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:42:25,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:42:25,122 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:42:25,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-08 16:42:25,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-11-08 16:42:25,323 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:42:25,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:42:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1465216573, now seen corresponding path program 9 times [2024-11-08 16:42:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:42:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768816560] [2024-11-08 16:42:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:42:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:42:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:42:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:26,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:42:26,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768816560] [2024-11-08 16:42:26,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768816560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:42:26,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108541330] [2024-11-08 16:42:26,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:42:26,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:42:26,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:42:26,497 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:42:26,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-08 16:42:26,977 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 16:42:26,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:42:26,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-08 16:42:26,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:42:27,515 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 19 treesize of output 1 [2024-11-08 16:42:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:28,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:42:29,624 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 16 treesize of output 14 [2024-11-08 16:42:29,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-08 16:42:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:29,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108541330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:42:29,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:42:29,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 81 [2024-11-08 16:42:29,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000834509] [2024-11-08 16:42:29,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:42:29,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-08 16:42:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:42:29,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-08 16:42:29,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=6553, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 16:42:35,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-11-08 16:42:35,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 268 transitions, 3125 flow. Second operand has 83 states, 83 states have (on average 20.40963855421687) internal successors, (1694), 83 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:42:35,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:42:35,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-11-08 16:42:35,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:42:47,040 INFO L124 PetriNetUnfolderBase]: 10731/20454 cut-off events. [2024-11-08 16:42:47,041 INFO L125 PetriNetUnfolderBase]: For 282663/293670 co-relation queries the response was YES. [2024-11-08 16:42:47,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116328 conditions, 20454 events. 10731/20454 cut-off events. For 282663/293670 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 155776 event pairs, 897 based on Foata normal form. 144/20425 useless extension candidates. Maximal degree in co-relation 116267. Up to 3534 conditions per place. [2024-11-08 16:42:47,272 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 899 selfloop transitions, 126 changer transitions 0/1112 dead transitions. [2024-11-08 16:42:47,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 1112 transitions, 16325 flow [2024-11-08 16:42:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 16:42:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-08 16:42:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1099 transitions. [2024-11-08 16:42:47,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4541322314049587 [2024-11-08 16:42:47,275 INFO L175 Difference]: Start difference. First operand has 326 places, 268 transitions, 3125 flow. Second operand 44 states and 1099 transitions. [2024-11-08 16:42:47,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 1112 transitions, 16325 flow [2024-11-08 16:42:51,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1112 transitions, 15844 flow, removed 43 selfloop flow, removed 48 redundant places. [2024-11-08 16:42:51,656 INFO L231 Difference]: Finished difference. Result has 323 places, 271 transitions, 3009 flow [2024-11-08 16:42:51,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3009, PETRI_PLACES=323, PETRI_TRANSITIONS=271} [2024-11-08 16:42:51,656 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 271 predicate places. [2024-11-08 16:42:51,656 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 271 transitions, 3009 flow [2024-11-08 16:42:51,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 20.40963855421687) internal successors, (1694), 83 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:42:51,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:42:51,657 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-08 16:42:51,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-11-08 16:42:51,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:42:51,857 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-08 16:42:51,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:42:51,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1318166828, now seen corresponding path program 14 times [2024-11-08 16:42:51,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:42:51,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750600719] [2024-11-08 16:42:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:42:51,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:42:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:42:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 149 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:42:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750600719] [2024-11-08 16:42:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750600719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:42:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333394986] [2024-11-08 16:42:52,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:42:52,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:42:52,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:42:52,838 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:42:52,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e88ee37-fd7e-4b7b-920e-9194e4b2eec5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-08 16:42:53,166 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:42:53,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:42:53,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 16:42:53,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:42:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 192 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:54,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:42:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 192 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:55,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333394986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:42:55,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:42:55,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 89 [2024-11-08 16:42:55,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886546701] [2024-11-08 16:42:55,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:42:55,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-08 16:42:55,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:42:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-08 16:42:55,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1184, Invalid=6826, Unknown=0, NotChecked=0, Total=8010 [2024-11-08 16:42:57,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-11-08 16:42:57,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 271 transitions, 3009 flow. Second operand has 90 states, 90 states have (on average 13.911111111111111) internal successors, (1252), 90 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:42:57,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:42:57,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-11-08 16:42:57,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand