./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:05:37,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:05:37,801 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:05:37,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:05:37,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:05:37,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:05:37,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:05:37,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:05:37,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:05:37,839 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:05:37,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:05:37,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:05:37,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:05:37,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:05:37,842 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:05:37,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:05:37,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:05:37,844 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:05:37,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:05:37,845 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:05:37,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:05:37,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:05:37,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:05:37,847 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:05:37,848 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:05:37,848 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:05:37,849 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:05:37,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:05:37,850 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:05:37,850 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:05:37,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:05:37,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:05:37,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:05:37,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:05:37,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:05:37,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:05:37,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:05:37,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:05:37,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:05:37,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:05:37,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:05:37,855 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:05:37,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:05:37,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:05:37,856 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_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2023-11-29 03:05:38,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:05:38,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:05:38,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:05:38,160 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:05:38,161 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:05:38,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2023-11-29 03:05:41,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:05:41,666 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:05:41,667 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2023-11-29 03:05:41,678 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/data/41dad5c7e/01e03662ccc149549c31e8ad40f2df63/FLAGec606e07b [2023-11-29 03:05:41,692 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/data/41dad5c7e/01e03662ccc149549c31e8ad40f2df63 [2023-11-29 03:05:41,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:05:41,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:05:41,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:05:41,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:05:41,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:05:41,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:05:41" (1/1) ... [2023-11-29 03:05:41,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30282cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:41, skipping insertion in model container [2023-11-29 03:05:41,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:05:41" (1/1) ... [2023-11-29 03:05:41,740 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:05:41,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:05:41,992 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:05:42,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:05:42,040 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:05:42,040 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:05:42,050 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:05:42,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42 WrapperNode [2023-11-29 03:05:42,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:05:42,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:05:42,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:05:42,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:05:42,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,117 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 378 [2023-11-29 03:05:42,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:05:42,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:05:42,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:05:42,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:05:42,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,167 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 2, 8, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 2, 1]. [2023-11-29 03:05:42,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:05:42,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:05:42,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:05:42,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:05:42,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (1/1) ... [2023-11-29 03:05:42,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:05:42,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:42,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:05:42,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:05:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:05:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:05:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:05:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:05:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:05:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:05:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:05:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:05:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:05:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:05:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:05:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:05:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:05:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:05:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:05:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:05:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 03:05:42,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 03:05:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:05:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:05:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:05:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:05:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:05:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 03:05:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 03:05:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:05:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:05:42,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:05:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:05:42,302 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:05:42,456 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:05:42,459 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:05:43,134 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:05:44,244 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:05:44,244 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 03:05:44,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:05:44 BoogieIcfgContainer [2023-11-29 03:05:44,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:05:44,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:05:44,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:05:44,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:05:44,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:05:41" (1/3) ... [2023-11-29 03:05:44,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673e49f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:05:44, skipping insertion in model container [2023-11-29 03:05:44,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:05:42" (2/3) ... [2023-11-29 03:05:44,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673e49f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:05:44, skipping insertion in model container [2023-11-29 03:05:44,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:05:44" (3/3) ... [2023-11-29 03:05:44,256 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-11-29 03:05:44,268 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:05:44,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:05:44,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-11-29 03:05:44,281 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:05:44,626 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 03:05:44,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 91 transitions, 203 flow [2023-11-29 03:05:44,743 INFO L124 PetriNetUnfolderBase]: 5/88 cut-off events. [2023-11-29 03:05:44,743 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 03:05:44,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 5/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 345 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-11-29 03:05:44,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 91 transitions, 203 flow [2023-11-29 03:05:44,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 86 transitions, 187 flow [2023-11-29 03:05:44,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:05:44,776 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b5b06dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:05:44,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-11-29 03:05:44,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:05:44,780 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 03:05:44,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:05:44,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:44,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 03:05:44,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:05:44,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1384864, now seen corresponding path program 1 times [2023-11-29 03:05:44,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891167036] [2023-11-29 03:05:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:44,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:45,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:45,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891167036] [2023-11-29 03:05:45,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891167036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:45,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:45,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:05:45,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848719361] [2023-11-29 03:05:45,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:45,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:45,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:45,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:45,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:45,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:05:45,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:45,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:45,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:05:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:48,122 INFO L124 PetriNetUnfolderBase]: 5845/9412 cut-off events. [2023-11-29 03:05:48,123 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2023-11-29 03:05:48,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18047 conditions, 9412 events. 5845/9412 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 72020 event pairs, 5157 based on Foata normal form. 2/5018 useless extension candidates. Maximal degree in co-relation 16610. Up to 8294 conditions per place. [2023-11-29 03:05:48,211 INFO L140 encePairwiseOnDemand]: 62/91 looper letters, 50 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2023-11-29 03:05:48,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 277 flow [2023-11-29 03:05:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:05:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2023-11-29 03:05:48,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368131868131868 [2023-11-29 03:05:48,226 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 159 transitions. [2023-11-29 03:05:48,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 159 transitions. [2023-11-29 03:05:48,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:48,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 159 transitions. [2023-11-29 03:05:48,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:48,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:48,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:48,241 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 187 flow. Second operand 4 states and 159 transitions. [2023-11-29 03:05:48,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 277 flow [2023-11-29 03:05:48,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 268 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:05:48,259 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 202 flow [2023-11-29 03:05:48,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2023-11-29 03:05:48,265 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -17 predicate places. [2023-11-29 03:05:48,265 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 202 flow [2023-11-29 03:05:48,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:48,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:48,266 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 03:05:48,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:05:48,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:05:48,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1691834463, now seen corresponding path program 1 times [2023-11-29 03:05:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:48,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321825525] [2023-11-29 03:05:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:48,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:48,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321825525] [2023-11-29 03:05:48,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321825525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:05:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332946425] [2023-11-29 03:05:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:48,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:48,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:48,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:05:48,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:05:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:48,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:05:48,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:48,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:05:48,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332946425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:48,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:05:48,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 03:05:48,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442788855] [2023-11-29 03:05:48,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:48,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:05:48,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:48,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:05:48,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:05:48,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:05:48,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:48,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:48,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:05:48,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:51,246 INFO L124 PetriNetUnfolderBase]: 5845/9410 cut-off events. [2023-11-29 03:05:51,246 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-29 03:05:51,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17944 conditions, 9410 events. 5845/9410 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 72079 event pairs, 5157 based on Foata normal form. 2/5019 useless extension candidates. Maximal degree in co-relation 17894. Up to 8284 conditions per place. [2023-11-29 03:05:51,334 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 43 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2023-11-29 03:05:51,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 304 flow [2023-11-29 03:05:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:05:51,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:05:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2023-11-29 03:05:51,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3241758241758242 [2023-11-29 03:05:51,338 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 177 transitions. [2023-11-29 03:05:51,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 177 transitions. [2023-11-29 03:05:51,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:51,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 177 transitions. [2023-11-29 03:05:51,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:51,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:51,344 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:51,344 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 202 flow. Second operand 6 states and 177 transitions. [2023-11-29 03:05:51,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 304 flow [2023-11-29 03:05:51,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:05:51,348 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 218 flow [2023-11-29 03:05:51,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-11-29 03:05:51,349 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -14 predicate places. [2023-11-29 03:05:51,350 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 218 flow [2023-11-29 03:05:51,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:51,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:51,350 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 03:05:51,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:05:51,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:51,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:05:51,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash -907259438, now seen corresponding path program 1 times [2023-11-29 03:05:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004736281] [2023-11-29 03:05:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004736281] [2023-11-29 03:05:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004736281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:05:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961962083] [2023-11-29 03:05:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:51,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:51,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:05:51,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:05:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:51,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:05:51,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:51,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:05:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:51,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961962083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:05:51,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:05:51,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 03:05:51,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527793122] [2023-11-29 03:05:51,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:05:51,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:05:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:05:51,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:05:51,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:05:51,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:51,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:52,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:05:52,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:54,027 INFO L124 PetriNetUnfolderBase]: 5851/9434 cut-off events. [2023-11-29 03:05:54,027 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-11-29 03:05:54,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18038 conditions, 9434 events. 5851/9434 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 72304 event pairs, 5157 based on Foata normal form. 6/5046 useless extension candidates. Maximal degree in co-relation 17896. Up to 8295 conditions per place. [2023-11-29 03:05:54,091 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 48 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2023-11-29 03:05:54,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 478 flow [2023-11-29 03:05:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:05:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:05:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2023-11-29 03:05:54,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3065934065934066 [2023-11-29 03:05:54,095 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 279 transitions. [2023-11-29 03:05:54,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 279 transitions. [2023-11-29 03:05:54,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:54,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 279 transitions. [2023-11-29 03:05:54,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.9) internal successors, (279), 10 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) [2023-11-29 03:05:54,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:54,103 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:54,103 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 218 flow. Second operand 10 states and 279 transitions. [2023-11-29 03:05:54,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 478 flow [2023-11-29 03:05:54,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-29 03:05:54,108 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 358 flow [2023-11-29 03:05:54,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2023-11-29 03:05:54,110 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -7 predicate places. [2023-11-29 03:05:54,110 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 358 flow [2023-11-29 03:05:54,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:54,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:54,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:54,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:05:54,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 03:05:54,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:05:54,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash -814870945, now seen corresponding path program 1 times [2023-11-29 03:05:54,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:54,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24997319] [2023-11-29 03:05:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:54,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:05:54,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:54,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24997319] [2023-11-29 03:05:54,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24997319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:05:54,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:05:54,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:05:54,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760009890] [2023-11-29 03:05:54,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:05:54,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:05:54,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:05:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:05:54,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2023-11-29 03:05:54,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:54,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:54,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2023-11-29 03:05:54,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:05:56,241 INFO L124 PetriNetUnfolderBase]: 5849/9433 cut-off events. [2023-11-29 03:05:56,241 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2023-11-29 03:05:56,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18046 conditions, 9433 events. 5849/9433 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 72177 event pairs, 5157 based on Foata normal form. 3/5044 useless extension candidates. Maximal degree in co-relation 17979. Up to 8304 conditions per place. [2023-11-29 03:05:56,313 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 62 selfloop transitions, 7 changer transitions 1/89 dead transitions. [2023-11-29 03:05:56,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 492 flow [2023-11-29 03:05:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:05:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:05:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2023-11-29 03:05:56,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41483516483516486 [2023-11-29 03:05:56,316 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 151 transitions. [2023-11-29 03:05:56,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 151 transitions. [2023-11-29 03:05:56,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:05:56,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 151 transitions. [2023-11-29 03:05:56,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:56,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:56,320 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:56,321 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 358 flow. Second operand 4 states and 151 transitions. [2023-11-29 03:05:56,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 492 flow [2023-11-29 03:05:56,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 469 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 03:05:56,327 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 341 flow [2023-11-29 03:05:56,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-11-29 03:05:56,328 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2023-11-29 03:05:56,328 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 341 flow [2023-11-29 03:05:56,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:56,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:05:56,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:05:56,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:05:56,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:05:56,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:05:56,330 INFO L85 PathProgramCache]: Analyzing trace with hash 994495690, now seen corresponding path program 1 times [2023-11-29 03:05:56,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:05:56,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863744938] [2023-11-29 03:05:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:05:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:05:56,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:05:56,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863744938] [2023-11-29 03:05:56,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863744938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:05:56,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85700568] [2023-11-29 03:05:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:05:56,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:05:56,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:05:56,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:05:56,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:05:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:05:57,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:05:57,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:05:57,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:05:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:05:57,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:05:57,211 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 [2023-11-29 03:05:57,217 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 [2023-11-29 03:05:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:05:57,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85700568] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:05:57,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:05:57,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-29 03:05:57,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412460080] [2023-11-29 03:05:57,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:05:57,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:05:57,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:05:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:05:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:05:57,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2023-11-29 03:05:57,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 341 flow. Second operand has 10 states, 10 states have (on average 25.7) internal successors, (257), 10 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:05:57,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:05:57,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2023-11-29 03:05:57,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:00,363 INFO L124 PetriNetUnfolderBase]: 9865/16026 cut-off events. [2023-11-29 03:06:00,363 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-29 03:06:00,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30351 conditions, 16026 events. 9865/16026 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 125669 event pairs, 2843 based on Foata normal form. 0/8408 useless extension candidates. Maximal degree in co-relation 30284. Up to 5348 conditions per place. [2023-11-29 03:06:00,459 INFO L140 encePairwiseOnDemand]: 74/91 looper letters, 104 selfloop transitions, 23 changer transitions 0/146 dead transitions. [2023-11-29 03:06:00,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 146 transitions, 717 flow [2023-11-29 03:06:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:06:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 03:06:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 302 transitions. [2023-11-29 03:06:00,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41483516483516486 [2023-11-29 03:06:00,462 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 302 transitions. [2023-11-29 03:06:00,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 302 transitions. [2023-11-29 03:06:00,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:00,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 302 transitions. [2023-11-29 03:06:00,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.75) internal successors, (302), 8 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) [2023-11-29 03:06:00,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:00,467 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:00,468 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 341 flow. Second operand 8 states and 302 transitions. [2023-11-29 03:06:00,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 146 transitions, 717 flow [2023-11-29 03:06:00,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 146 transitions, 694 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 03:06:00,474 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 413 flow [2023-11-29 03:06:00,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=413, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2023-11-29 03:06:00,476 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -1 predicate places. [2023-11-29 03:06:00,476 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 413 flow [2023-11-29 03:06:00,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.7) internal successors, (257), 10 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:00,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:00,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:00,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 03:06:00,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:00,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:00,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:00,681 INFO L85 PathProgramCache]: Analyzing trace with hash 994495693, now seen corresponding path program 1 times [2023-11-29 03:06:00,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:00,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994243724] [2023-11-29 03:06:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:01,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994243724] [2023-11-29 03:06:01,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994243724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:01,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4530754] [2023-11-29 03:06:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:01,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:01,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:01,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:01,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:06:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:01,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 03:06:01,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:01,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-29 03:06:01,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:01,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:01,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:01,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:01,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:01,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:01,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:01,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:01,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:01,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:01,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:06:01,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:01,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:01,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:06:01,653 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:06:01,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:06:01,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 03:06:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:01,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:01,777 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#3| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_141) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-11-29 03:06:01,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:06:01,859 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-29 03:06:01,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:06:01,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-29 03:06:01,879 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 11 treesize of output 9 [2023-11-29 03:06:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-29 03:06:01,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4530754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:01,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:01,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 03:06:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433718829] [2023-11-29 03:06:01,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:06:01,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:06:01,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-11-29 03:06:01,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 91 [2023-11-29 03:06:01,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 413 flow. Second operand has 12 states, 12 states have (on average 23.833333333333332) internal successors, (286), 12 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:01,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:01,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 91 [2023-11-29 03:06:01,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:05,913 INFO L124 PetriNetUnfolderBase]: 11491/17978 cut-off events. [2023-11-29 03:06:05,913 INFO L125 PetriNetUnfolderBase]: For 2917/2917 co-relation queries the response was YES. [2023-11-29 03:06:05,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40431 conditions, 17978 events. 11491/17978 cut-off events. For 2917/2917 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 135185 event pairs, 4579 based on Foata normal form. 0/10065 useless extension candidates. Maximal degree in co-relation 40363. Up to 9271 conditions per place. [2023-11-29 03:06:06,016 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 113 selfloop transitions, 17 changer transitions 0/147 dead transitions. [2023-11-29 03:06:06,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 147 transitions, 779 flow [2023-11-29 03:06:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:06:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 03:06:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 355 transitions. [2023-11-29 03:06:06,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3546453546453546 [2023-11-29 03:06:06,019 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 355 transitions. [2023-11-29 03:06:06,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 355 transitions. [2023-11-29 03:06:06,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:06,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 355 transitions. [2023-11-29 03:06:06,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 32.27272727272727) internal successors, (355), 11 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:06,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:06,023 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:06,023 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 413 flow. Second operand 11 states and 355 transitions. [2023-11-29 03:06:06,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 147 transitions, 779 flow [2023-11-29 03:06:06,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 147 transitions, 757 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:06:06,032 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 421 flow [2023-11-29 03:06:06,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=421, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2023-11-29 03:06:06,034 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-11-29 03:06:06,034 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 421 flow [2023-11-29 03:06:06,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.833333333333332) internal successors, (286), 12 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:06,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:06,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:06,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:06:06,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:06,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:06,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash 994495694, now seen corresponding path program 1 times [2023-11-29 03:06:06,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279092946] [2023-11-29 03:06:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:06,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279092946] [2023-11-29 03:06:06,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279092946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773814003] [2023-11-29 03:06:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:06,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:06,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:06,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:06,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:06:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:06,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 03:06:06,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:06,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 03:06:06,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:06,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:06,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:06,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:06,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:06,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:06,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:06,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:06:07,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:07,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:07,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:07,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:07,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:07,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:07,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:07,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:07,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:07,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:07,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:07,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:07,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:07,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:07,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:07,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:07,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:07,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:07,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:07,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:07,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:06:07,191 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:06:07,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:06:07,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 03:06:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:07,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:07,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:06:07,396 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-29 03:06:07,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:06:07,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-29 03:06:07,414 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 9 treesize of output 7 [2023-11-29 03:06:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:07,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773814003] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:07,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:07,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 03:06:07,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550622113] [2023-11-29 03:06:07,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:07,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:06:07,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:06:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=120, Unknown=2, NotChecked=0, Total=156 [2023-11-29 03:06:07,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 91 [2023-11-29 03:06:07,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 421 flow. Second operand has 13 states, 13 states have (on average 24.153846153846153) internal successors, (314), 13 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:07,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:07,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 91 [2023-11-29 03:06:07,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:10,742 INFO L124 PetriNetUnfolderBase]: 10949/17082 cut-off events. [2023-11-29 03:06:10,742 INFO L125 PetriNetUnfolderBase]: For 3910/3910 co-relation queries the response was YES. [2023-11-29 03:06:10,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39420 conditions, 17082 events. 10949/17082 cut-off events. For 3910/3910 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 131538 event pairs, 5657 based on Foata normal form. 0/9780 useless extension candidates. Maximal degree in co-relation 39351. Up to 9271 conditions per place. [2023-11-29 03:06:10,843 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 112 selfloop transitions, 17 changer transitions 0/146 dead transitions. [2023-11-29 03:06:10,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 146 transitions, 785 flow [2023-11-29 03:06:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:06:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 03:06:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 354 transitions. [2023-11-29 03:06:10,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35364635364635366 [2023-11-29 03:06:10,846 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 354 transitions. [2023-11-29 03:06:10,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 354 transitions. [2023-11-29 03:06:10,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:10,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 354 transitions. [2023-11-29 03:06:10,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 32.18181818181818) internal successors, (354), 11 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:10,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:10,852 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:10,852 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 421 flow. Second operand 11 states and 354 transitions. [2023-11-29 03:06:10,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 146 transitions, 785 flow [2023-11-29 03:06:10,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 146 transitions, 762 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:06:10,867 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 428 flow [2023-11-29 03:06:10,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=428, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2023-11-29 03:06:10,868 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 10 predicate places. [2023-11-29 03:06:10,868 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 428 flow [2023-11-29 03:06:10,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 24.153846153846153) internal successors, (314), 13 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:10,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:10,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:10,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 03:06:11,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:11,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:11,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:11,070 INFO L85 PathProgramCache]: Analyzing trace with hash 994495691, now seen corresponding path program 1 times [2023-11-29 03:06:11,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:11,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184466652] [2023-11-29 03:06:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:11,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:11,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:11,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184466652] [2023-11-29 03:06:11,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184466652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:11,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250932721] [2023-11-29 03:06:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:11,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:11,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:11,370 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:11,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:06:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:11,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:06:11,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:11,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:06:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:11,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:11,717 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 [2023-11-29 03:06:11,720 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 [2023-11-29 03:06:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:11,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250932721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:11,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:11,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-29 03:06:11,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721359431] [2023-11-29 03:06:11,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:11,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:06:11,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:11,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:06:11,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:06:11,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2023-11-29 03:06:11,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 428 flow. Second operand has 10 states, 10 states have (on average 25.7) internal successors, (257), 10 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:11,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:11,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2023-11-29 03:06:11,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:14,449 INFO L124 PetriNetUnfolderBase]: 8239/13612 cut-off events. [2023-11-29 03:06:14,449 INFO L125 PetriNetUnfolderBase]: For 5939/5939 co-relation queries the response was YES. [2023-11-29 03:06:14,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32027 conditions, 13612 events. 8239/13612 cut-off events. For 5939/5939 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 107834 event pairs, 2017 based on Foata normal form. 0/7755 useless extension candidates. Maximal degree in co-relation 31958. Up to 4584 conditions per place. [2023-11-29 03:06:14,522 INFO L140 encePairwiseOnDemand]: 74/91 looper letters, 101 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2023-11-29 03:06:14,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 143 transitions, 778 flow [2023-11-29 03:06:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:06:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 03:06:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 299 transitions. [2023-11-29 03:06:14,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2023-11-29 03:06:14,525 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 299 transitions. [2023-11-29 03:06:14,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 299 transitions. [2023-11-29 03:06:14,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:14,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 299 transitions. [2023-11-29 03:06:14,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.375) internal successors, (299), 8 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:14,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:14,529 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:14,530 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 428 flow. Second operand 8 states and 299 transitions. [2023-11-29 03:06:14,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 143 transitions, 778 flow [2023-11-29 03:06:14,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 143 transitions, 745 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 03:06:14,541 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 437 flow [2023-11-29 03:06:14,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=437, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2023-11-29 03:06:14,542 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2023-11-29 03:06:14,542 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 437 flow [2023-11-29 03:06:14,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.7) internal successors, (257), 10 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:14,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:14,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:14,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:06:14,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:14,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:14,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash 994495700, now seen corresponding path program 1 times [2023-11-29 03:06:14,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:14,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812528908] [2023-11-29 03:06:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:14,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:06:14,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:14,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812528908] [2023-11-29 03:06:14,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812528908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:14,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:14,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:06:14,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762828791] [2023-11-29 03:06:14,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:14,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:06:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:14,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:06:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:06:14,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2023-11-29 03:06:14,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:14,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:14,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2023-11-29 03:06:14,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:17,285 INFO L124 PetriNetUnfolderBase]: 7895/13584 cut-off events. [2023-11-29 03:06:17,285 INFO L125 PetriNetUnfolderBase]: For 7239/7239 co-relation queries the response was YES. [2023-11-29 03:06:17,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32742 conditions, 13584 events. 7895/13584 cut-off events. For 7239/7239 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 114807 event pairs, 1657 based on Foata normal form. 0/8373 useless extension candidates. Maximal degree in co-relation 32673. Up to 8503 conditions per place. [2023-11-29 03:06:17,363 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 99 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-11-29 03:06:17,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 120 transitions, 694 flow [2023-11-29 03:06:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:06:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:06:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-29 03:06:17,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567765567765568 [2023-11-29 03:06:17,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-29 03:06:17,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-29 03:06:17,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:17,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-29 03:06:17,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:17,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:17,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:17,367 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 437 flow. Second operand 3 states and 152 transitions. [2023-11-29 03:06:17,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 120 transitions, 694 flow [2023-11-29 03:06:17,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 120 transitions, 669 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:06:17,377 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 408 flow [2023-11-29 03:06:17,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2023-11-29 03:06:17,378 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-11-29 03:06:17,379 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 408 flow [2023-11-29 03:06:17,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:17,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:17,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:06:17,380 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:17,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2093115231, now seen corresponding path program 1 times [2023-11-29 03:06:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:17,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040320890] [2023-11-29 03:06:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:17,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:17,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040320890] [2023-11-29 03:06:17,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040320890] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:17,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768855201] [2023-11-29 03:06:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:17,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:17,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:17,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:17,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:06:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:17,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:06:17,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:17,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768855201] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:17,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-29 03:06:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593550408] [2023-11-29 03:06:17,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:17,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:06:17,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:06:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:06:18,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2023-11-29 03:06:18,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 408 flow. Second operand has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:18,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:18,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2023-11-29 03:06:18,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:21,530 INFO L124 PetriNetUnfolderBase]: 10767/17232 cut-off events. [2023-11-29 03:06:21,530 INFO L125 PetriNetUnfolderBase]: For 9254/9254 co-relation queries the response was YES. [2023-11-29 03:06:21,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43852 conditions, 17232 events. 10767/17232 cut-off events. For 9254/9254 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 132848 event pairs, 8960 based on Foata normal form. 1/10484 useless extension candidates. Maximal degree in co-relation 43757. Up to 12333 conditions per place. [2023-11-29 03:06:21,661 INFO L140 encePairwiseOnDemand]: 80/91 looper letters, 112 selfloop transitions, 40 changer transitions 0/168 dead transitions. [2023-11-29 03:06:21,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 168 transitions, 1071 flow [2023-11-29 03:06:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:06:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:06:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 352 transitions. [2023-11-29 03:06:21,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32234432234432236 [2023-11-29 03:06:21,663 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 352 transitions. [2023-11-29 03:06:21,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 352 transitions. [2023-11-29 03:06:21,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:21,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 352 transitions. [2023-11-29 03:06:21,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 29.333333333333332) internal successors, (352), 12 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:21,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:21,668 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:21,668 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 408 flow. Second operand 12 states and 352 transitions. [2023-11-29 03:06:21,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 168 transitions, 1071 flow [2023-11-29 03:06:21,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 168 transitions, 1067 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:06:21,675 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 640 flow [2023-11-29 03:06:21,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=640, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2023-11-29 03:06:21,676 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 19 predicate places. [2023-11-29 03:06:21,677 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 640 flow [2023-11-29 03:06:21,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:21,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:21,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:21,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:06:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:21,878 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:21,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:21,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2067292394, now seen corresponding path program 1 times [2023-11-29 03:06:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:21,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926162242] [2023-11-29 03:06:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:21,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:06:21,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926162242] [2023-11-29 03:06:21,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926162242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:21,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:21,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:06:21,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653153161] [2023-11-29 03:06:21,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:21,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:06:21,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:06:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:06:21,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 91 [2023-11-29 03:06:21,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 107 transitions, 640 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:21,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:21,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 91 [2023-11-29 03:06:21,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:25,694 INFO L124 PetriNetUnfolderBase]: 12721/20862 cut-off events. [2023-11-29 03:06:25,694 INFO L125 PetriNetUnfolderBase]: For 10887/10975 co-relation queries the response was YES. [2023-11-29 03:06:25,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52121 conditions, 20862 events. 12721/20862 cut-off events. For 10887/10975 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 170077 event pairs, 9596 based on Foata normal form. 580/14279 useless extension candidates. Maximal degree in co-relation 52024. Up to 15362 conditions per place. [2023-11-29 03:06:25,839 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 142 selfloop transitions, 4 changer transitions 0/162 dead transitions. [2023-11-29 03:06:25,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 162 transitions, 1072 flow [2023-11-29 03:06:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:06:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:06:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2023-11-29 03:06:25,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521978021978022 [2023-11-29 03:06:25,841 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 190 transitions. [2023-11-29 03:06:25,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 190 transitions. [2023-11-29 03:06:25,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:25,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 190 transitions. [2023-11-29 03:06:25,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:25,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:25,843 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:25,843 INFO L175 Difference]: Start difference. First operand has 110 places, 107 transitions, 640 flow. Second operand 4 states and 190 transitions. [2023-11-29 03:06:25,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 162 transitions, 1072 flow [2023-11-29 03:06:25,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 162 transitions, 1046 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 03:06:25,898 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 635 flow [2023-11-29 03:06:25,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=635, PETRI_PLACES=114, PETRI_TRANSITIONS=108} [2023-11-29 03:06:25,899 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 23 predicate places. [2023-11-29 03:06:25,899 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 635 flow [2023-11-29 03:06:25,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:25,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:25,899 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 03:06:25,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:06:25,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:25,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:25,900 INFO L85 PathProgramCache]: Analyzing trace with hash 210669299, now seen corresponding path program 2 times [2023-11-29 03:06:25,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:25,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943625655] [2023-11-29 03:06:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:25,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:26,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:26,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943625655] [2023-11-29 03:06:26,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943625655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:26,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812562749] [2023-11-29 03:06:26,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:06:26,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:26,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:26,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:26,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:06:26,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:06:26,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:06:26,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:06:26,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:06:26,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:06:26,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812562749] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:26,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:26,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 03:06:26,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477493527] [2023-11-29 03:06:26,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:26,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:06:26,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:26,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:06:26,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:06:26,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:06:26,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 108 transitions, 635 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:26,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:26,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:06:26,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:29,804 INFO L124 PetriNetUnfolderBase]: 9988/16457 cut-off events. [2023-11-29 03:06:29,804 INFO L125 PetriNetUnfolderBase]: For 15337/15337 co-relation queries the response was YES. [2023-11-29 03:06:29,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44720 conditions, 16457 events. 9988/16457 cut-off events. For 15337/15337 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 130738 event pairs, 8960 based on Foata normal form. 3/10447 useless extension candidates. Maximal degree in co-relation 44605. Up to 14362 conditions per place. [2023-11-29 03:06:29,922 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 52 selfloop transitions, 46 changer transitions 0/116 dead transitions. [2023-11-29 03:06:29,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 116 transitions, 903 flow [2023-11-29 03:06:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:06:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 03:06:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 559 transitions. [2023-11-29 03:06:29,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25595238095238093 [2023-11-29 03:06:29,926 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 559 transitions. [2023-11-29 03:06:29,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 559 transitions. [2023-11-29 03:06:29,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:29,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 559 transitions. [2023-11-29 03:06:29,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 23.291666666666668) internal successors, (559), 24 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) [2023-11-29 03:06:29,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 91.0) internal successors, (2275), 25 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:29,932 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 91.0) internal successors, (2275), 25 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:29,932 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 635 flow. Second operand 24 states and 559 transitions. [2023-11-29 03:06:29,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 116 transitions, 903 flow [2023-11-29 03:06:29,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 116 transitions, 897 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:06:29,946 INFO L231 Difference]: Finished difference. Result has 136 places, 116 transitions, 817 flow [2023-11-29 03:06:29,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=817, PETRI_PLACES=136, PETRI_TRANSITIONS=116} [2023-11-29 03:06:29,946 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 45 predicate places. [2023-11-29 03:06:29,946 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 116 transitions, 817 flow [2023-11-29 03:06:29,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:29,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:29,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:29,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:06:30,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:30,148 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:30,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1481073981, now seen corresponding path program 1 times [2023-11-29 03:06:30,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:30,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517167416] [2023-11-29 03:06:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:30,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:06:30,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:30,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517167416] [2023-11-29 03:06:30,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517167416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:30,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:30,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:06:30,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407953055] [2023-11-29 03:06:30,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:30,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:06:30,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:06:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:06:30,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2023-11-29 03:06:30,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 116 transitions, 817 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:30,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:30,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2023-11-29 03:06:30,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:34,826 INFO L124 PetriNetUnfolderBase]: 14990/24615 cut-off events. [2023-11-29 03:06:34,826 INFO L125 PetriNetUnfolderBase]: For 18661/18931 co-relation queries the response was YES. [2023-11-29 03:06:34,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65562 conditions, 24615 events. 14990/24615 cut-off events. For 18661/18931 co-relation queries the response was YES. Maximal size of possible extension queue 1385. Compared 200635 event pairs, 5276 based on Foata normal form. 0/15691 useless extension candidates. Maximal degree in co-relation 65463. Up to 14107 conditions per place. [2023-11-29 03:06:35,010 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 130 selfloop transitions, 3 changer transitions 0/152 dead transitions. [2023-11-29 03:06:35,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 152 transitions, 1233 flow [2023-11-29 03:06:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:06:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:06:35,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2023-11-29 03:06:35,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2023-11-29 03:06:35,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2023-11-29 03:06:35,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2023-11-29 03:06:35,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:35,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2023-11-29 03:06:35,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:35,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:35,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:35,013 INFO L175 Difference]: Start difference. First operand has 136 places, 116 transitions, 817 flow. Second operand 3 states and 154 transitions. [2023-11-29 03:06:35,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 152 transitions, 1233 flow [2023-11-29 03:06:35,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 152 transitions, 1112 flow, removed 13 selfloop flow, removed 13 redundant places. [2023-11-29 03:06:35,032 INFO L231 Difference]: Finished difference. Result has 126 places, 118 transitions, 721 flow [2023-11-29 03:06:35,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=721, PETRI_PLACES=126, PETRI_TRANSITIONS=118} [2023-11-29 03:06:35,033 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 35 predicate places. [2023-11-29 03:06:35,033 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 118 transitions, 721 flow [2023-11-29 03:06:35,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:35,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:35,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:35,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:06:35,034 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:35,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:35,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1481073990, now seen corresponding path program 1 times [2023-11-29 03:06:35,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:35,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412050046] [2023-11-29 03:06:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:35,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:35,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412050046] [2023-11-29 03:06:35,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412050046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893081534] [2023-11-29 03:06:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:35,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:35,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:35,378 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:35,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:06:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:35,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 03:06:35,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:35,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:06:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:35,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:35,881 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 [2023-11-29 03:06:35,886 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 [2023-11-29 03:06:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:36,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893081534] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:36,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:36,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-29 03:06:36,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838335272] [2023-11-29 03:06:36,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:36,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:06:36,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:36,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:06:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:06:36,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:06:36,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 118 transitions, 721 flow. Second operand has 23 states, 23 states have (on average 21.82608695652174) internal successors, (502), 23 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:36,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:36,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:06:36,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:43,475 INFO L124 PetriNetUnfolderBase]: 18234/29472 cut-off events. [2023-11-29 03:06:43,475 INFO L125 PetriNetUnfolderBase]: For 26641/27131 co-relation queries the response was YES. [2023-11-29 03:06:43,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84483 conditions, 29472 events. 18234/29472 cut-off events. For 26641/27131 co-relation queries the response was YES. Maximal size of possible extension queue 1709. Compared 246355 event pairs, 7177 based on Foata normal form. 0/20757 useless extension candidates. Maximal degree in co-relation 84389. Up to 8629 conditions per place. [2023-11-29 03:06:43,772 INFO L140 encePairwiseOnDemand]: 74/91 looper letters, 206 selfloop transitions, 72 changer transitions 6/302 dead transitions. [2023-11-29 03:06:43,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 302 transitions, 2184 flow [2023-11-29 03:06:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:06:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 03:06:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 567 transitions. [2023-11-29 03:06:43,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3665158371040724 [2023-11-29 03:06:43,775 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 567 transitions. [2023-11-29 03:06:43,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 567 transitions. [2023-11-29 03:06:43,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:43,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 567 transitions. [2023-11-29 03:06:43,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 33.35294117647059) internal successors, (567), 17 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:43,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:43,781 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:43,781 INFO L175 Difference]: Start difference. First operand has 126 places, 118 transitions, 721 flow. Second operand 17 states and 567 transitions. [2023-11-29 03:06:43,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 302 transitions, 2184 flow [2023-11-29 03:06:43,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 302 transitions, 2178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:06:43,802 INFO L231 Difference]: Finished difference. Result has 143 places, 140 transitions, 953 flow [2023-11-29 03:06:43,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=953, PETRI_PLACES=143, PETRI_TRANSITIONS=140} [2023-11-29 03:06:43,803 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 52 predicate places. [2023-11-29 03:06:43,803 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 140 transitions, 953 flow [2023-11-29 03:06:43,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 21.82608695652174) internal successors, (502), 23 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:43,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:43,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:43,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:06:44,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:06:44,005 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:44,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:44,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1481073989, now seen corresponding path program 1 times [2023-11-29 03:06:44,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:44,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571439549] [2023-11-29 03:06:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:44,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:44,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571439549] [2023-11-29 03:06:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571439549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:44,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155864004] [2023-11-29 03:06:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:44,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:44,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:44,507 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:44,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:06:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:44,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 03:06:44,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:44,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:06:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:44,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:45,075 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 [2023-11-29 03:06:45,079 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 [2023-11-29 03:06:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:45,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155864004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:45,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:45,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-11-29 03:06:45,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540243137] [2023-11-29 03:06:45,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:45,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:06:45,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:45,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:06:45,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:06:45,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2023-11-29 03:06:45,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 140 transitions, 953 flow. Second operand has 24 states, 24 states have (on average 20.875) internal successors, (501), 24 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:45,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:45,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2023-11-29 03:06:45,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:06:51,639 INFO L124 PetriNetUnfolderBase]: 20062/31382 cut-off events. [2023-11-29 03:06:51,639 INFO L125 PetriNetUnfolderBase]: For 31491/32041 co-relation queries the response was YES. [2023-11-29 03:06:51,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99119 conditions, 31382 events. 20062/31382 cut-off events. For 31491/32041 co-relation queries the response was YES. Maximal size of possible extension queue 1738. Compared 251793 event pairs, 8833 based on Foata normal form. 0/23113 useless extension candidates. Maximal degree in co-relation 99014. Up to 9834 conditions per place. [2023-11-29 03:06:51,884 INFO L140 encePairwiseOnDemand]: 74/91 looper letters, 210 selfloop transitions, 71 changer transitions 6/304 dead transitions. [2023-11-29 03:06:51,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 304 transitions, 2371 flow [2023-11-29 03:06:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:06:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 03:06:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 575 transitions. [2023-11-29 03:06:51,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351037851037851 [2023-11-29 03:06:51,887 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 575 transitions. [2023-11-29 03:06:51,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 575 transitions. [2023-11-29 03:06:51,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:06:51,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 575 transitions. [2023-11-29 03:06:51,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 31.944444444444443) internal successors, (575), 18 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:51,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:51,892 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:51,893 INFO L175 Difference]: Start difference. First operand has 143 places, 140 transitions, 953 flow. Second operand 18 states and 575 transitions. [2023-11-29 03:06:51,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 304 transitions, 2371 flow [2023-11-29 03:06:52,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 304 transitions, 2285 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 03:06:52,003 INFO L231 Difference]: Finished difference. Result has 151 places, 141 transitions, 1013 flow [2023-11-29 03:06:52,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1013, PETRI_PLACES=151, PETRI_TRANSITIONS=141} [2023-11-29 03:06:52,004 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2023-11-29 03:06:52,004 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 141 transitions, 1013 flow [2023-11-29 03:06:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 20.875) internal successors, (501), 24 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:52,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:06:52,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:06:52,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:06:52,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:06:52,205 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:06:52,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1481073987, now seen corresponding path program 1 times [2023-11-29 03:06:52,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:52,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285689811] [2023-11-29 03:06:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:52,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:52,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285689811] [2023-11-29 03:06:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285689811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:06:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344313368] [2023-11-29 03:06:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:52,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:06:52,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:52,549 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:06:52,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:06:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:52,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 03:06:52,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:52,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 03:06:52,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:06:52,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:52,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:52,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:52,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:52,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:52,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:52,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:52,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:52,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:53,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:53,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:53,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:53,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:53,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:53,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:53,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:53,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:06:53,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:53,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:53,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:53,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:06:53,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:06:53,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:06:53,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:06:53,173 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:06:53,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:06:53,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 03:06:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:06:53,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:53,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:06:53,509 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-11-29 03:06:53,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:06:53,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2023-11-29 03:06:53,525 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 15 treesize of output 9 [2023-11-29 03:06:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:06:53,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344313368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:53,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:53,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2023-11-29 03:06:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415655436] [2023-11-29 03:06:53,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:53,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:06:53,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:53,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:06:53,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=289, Unknown=1, NotChecked=0, Total=342 [2023-11-29 03:06:53,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 91 [2023-11-29 03:06:53,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 141 transitions, 1013 flow. Second operand has 19 states, 19 states have (on average 16.263157894736842) internal successors, (309), 19 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:06:53,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:06:53,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 91 [2023-11-29 03:06:53,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:09,186 INFO L124 PetriNetUnfolderBase]: 54652/84623 cut-off events. [2023-11-29 03:07:09,186 INFO L125 PetriNetUnfolderBase]: For 85941/85941 co-relation queries the response was YES. [2023-11-29 03:07:09,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267860 conditions, 84623 events. 54652/84623 cut-off events. For 85941/85941 co-relation queries the response was YES. Maximal size of possible extension queue 2719. Compared 677431 event pairs, 33263 based on Foata normal form. 0/63512 useless extension candidates. Maximal degree in co-relation 267705. Up to 28257 conditions per place. [2023-11-29 03:07:09,861 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 308 selfloop transitions, 75 changer transitions 6/401 dead transitions. [2023-11-29 03:07:09,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 401 transitions, 3164 flow [2023-11-29 03:07:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:07:09,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 03:07:09,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 634 transitions. [2023-11-29 03:07:09,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2902930402930403 [2023-11-29 03:07:09,863 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 634 transitions. [2023-11-29 03:07:09,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 634 transitions. [2023-11-29 03:07:09,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:09,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 634 transitions. [2023-11-29 03:07:09,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 26.416666666666668) internal successors, (634), 24 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:09,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 91.0) internal successors, (2275), 25 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:09,867 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 91.0) internal successors, (2275), 25 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:09,867 INFO L175 Difference]: Start difference. First operand has 151 places, 141 transitions, 1013 flow. Second operand 24 states and 634 transitions. [2023-11-29 03:07:09,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 401 transitions, 3164 flow [2023-11-29 03:07:10,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 401 transitions, 3110 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 03:07:10,133 INFO L231 Difference]: Finished difference. Result has 170 places, 164 transitions, 1374 flow [2023-11-29 03:07:10,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1374, PETRI_PLACES=170, PETRI_TRANSITIONS=164} [2023-11-29 03:07:10,133 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2023-11-29 03:07:10,133 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 164 transitions, 1374 flow [2023-11-29 03:07:10,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.263157894736842) internal successors, (309), 19 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:10,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:10,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:10,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:07:10,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:07:10,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:07:10,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1481073986, now seen corresponding path program 1 times [2023-11-29 03:07:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:10,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615930854] [2023-11-29 03:07:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:10,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615930854] [2023-11-29 03:07:10,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615930854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128643212] [2023-11-29 03:07:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:10,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:10,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:10,678 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:10,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:07:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:10,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 03:07:10,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:10,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 03:07:10,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:07:10,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:07:10,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:10,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:07:10,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:10,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:07:10,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:10,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:07:10,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:10,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:07:10,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:10,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:07:10,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:10,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:07:10,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:10,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:07:10,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:10,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:07:10,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:10,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:11,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:11,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:07:11,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:11,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:11,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:11,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:07:11,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:07:11,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:07:11,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:07:11,119 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:07:11,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:07:11,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 03:07:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:11,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:11,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:07:11,465 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-29 03:07:11,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:07:11,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-29 03:07:11,482 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 13 treesize of output 7 [2023-11-29 03:07:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:07:11,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128643212] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:11,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:11,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2023-11-29 03:07:11,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989200040] [2023-11-29 03:07:11,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:11,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:07:11,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:07:11,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=288, Unknown=2, NotChecked=0, Total=342 [2023-11-29 03:07:11,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 91 [2023-11-29 03:07:11,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 164 transitions, 1374 flow. Second operand has 19 states, 19 states have (on average 16.263157894736842) internal successors, (309), 19 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:11,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:11,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 91 [2023-11-29 03:07:11,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:28,254 INFO L124 PetriNetUnfolderBase]: 53202/82685 cut-off events. [2023-11-29 03:07:28,254 INFO L125 PetriNetUnfolderBase]: For 110262/110262 co-relation queries the response was YES. [2023-11-29 03:07:28,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271613 conditions, 82685 events. 53202/82685 cut-off events. For 110262/110262 co-relation queries the response was YES. Maximal size of possible extension queue 2672. Compared 662562 event pairs, 33263 based on Foata normal form. 832/64110 useless extension candidates. Maximal degree in co-relation 271473. Up to 28257 conditions per place. [2023-11-29 03:07:29,166 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 305 selfloop transitions, 75 changer transitions 6/398 dead transitions. [2023-11-29 03:07:29,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 398 transitions, 3295 flow [2023-11-29 03:07:29,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:07:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 03:07:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 632 transitions. [2023-11-29 03:07:29,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2893772893772894 [2023-11-29 03:07:29,170 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 632 transitions. [2023-11-29 03:07:29,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 632 transitions. [2023-11-29 03:07:29,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:29,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 632 transitions. [2023-11-29 03:07:29,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 26.333333333333332) internal successors, (632), 24 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:29,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 91.0) internal successors, (2275), 25 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:29,178 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 91.0) internal successors, (2275), 25 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:29,178 INFO L175 Difference]: Start difference. First operand has 170 places, 164 transitions, 1374 flow. Second operand 24 states and 632 transitions. [2023-11-29 03:07:29,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 398 transitions, 3295 flow [2023-11-29 03:07:29,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 398 transitions, 3215 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-11-29 03:07:29,489 INFO L231 Difference]: Finished difference. Result has 184 places, 163 transitions, 1440 flow [2023-11-29 03:07:29,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1440, PETRI_PLACES=184, PETRI_TRANSITIONS=163} [2023-11-29 03:07:29,490 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2023-11-29 03:07:29,490 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 163 transitions, 1440 flow [2023-11-29 03:07:29,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.263157894736842) internal successors, (309), 19 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:29,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:29,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:29,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:07:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:07:29,691 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:07:29,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:29,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1170193203, now seen corresponding path program 1 times [2023-11-29 03:07:29,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:29,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418906131] [2023-11-29 03:07:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:29,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:29,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:29,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418906131] [2023-11-29 03:07:29,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418906131] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:07:29,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602545184] [2023-11-29 03:07:29,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:29,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:29,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:29,885 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:29,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:07:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:30,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:07:30,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:30,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:07:30,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602545184] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:30,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:07:30,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-11-29 03:07:30,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158204417] [2023-11-29 03:07:30,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:30,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:07:30,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:30,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:07:30,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:07:30,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 91 [2023-11-29 03:07:30,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 163 transitions, 1440 flow. Second operand has 20 states, 20 states have (on average 17.7) internal successors, (354), 20 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:30,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:30,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 91 [2023-11-29 03:07:30,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:07:46,260 INFO L124 PetriNetUnfolderBase]: 43406/66267 cut-off events. [2023-11-29 03:07:46,260 INFO L125 PetriNetUnfolderBase]: For 117518/119210 co-relation queries the response was YES. [2023-11-29 03:07:46,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222764 conditions, 66267 events. 43406/66267 cut-off events. For 117518/119210 co-relation queries the response was YES. Maximal size of possible extension queue 3075. Compared 557570 event pairs, 35390 based on Foata normal form. 288/52049 useless extension candidates. Maximal degree in co-relation 222619. Up to 53377 conditions per place. [2023-11-29 03:07:47,281 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 202 selfloop transitions, 62 changer transitions 12/289 dead transitions. [2023-11-29 03:07:47,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 289 transitions, 2839 flow [2023-11-29 03:07:47,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:07:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 03:07:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 372 transitions. [2023-11-29 03:07:47,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29199372056514916 [2023-11-29 03:07:47,283 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 372 transitions. [2023-11-29 03:07:47,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 372 transitions. [2023-11-29 03:07:47,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:07:47,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 372 transitions. [2023-11-29 03:07:47,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 26.571428571428573) internal successors, (372), 14 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:47,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 91.0) internal successors, (1365), 15 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:47,286 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 91.0) internal successors, (1365), 15 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:47,286 INFO L175 Difference]: Start difference. First operand has 184 places, 163 transitions, 1440 flow. Second operand 14 states and 372 transitions. [2023-11-29 03:07:47,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 289 transitions, 2839 flow [2023-11-29 03:07:48,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 289 transitions, 2714 flow, removed 0 selfloop flow, removed 17 redundant places. [2023-11-29 03:07:48,230 INFO L231 Difference]: Finished difference. Result has 184 places, 167 transitions, 1512 flow [2023-11-29 03:07:48,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1512, PETRI_PLACES=184, PETRI_TRANSITIONS=167} [2023-11-29 03:07:48,231 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 93 predicate places. [2023-11-29 03:07:48,231 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 167 transitions, 1512 flow [2023-11-29 03:07:48,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.7) internal successors, (354), 20 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:07:48,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:07:48,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:07:48,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:07:48,432 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:07:48,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1677871546, now seen corresponding path program 1 times [2023-11-29 03:07:48,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:48,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687202453] [2023-11-29 03:07:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:48,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:07:48,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:48,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687202453] [2023-11-29 03:07:48,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687202453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:48,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:48,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:48,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612944423] [2023-11-29 03:07:48,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:48,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:07:48,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:48,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:07:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:07:48,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 91 [2023-11-29 03:07:48,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 167 transitions, 1512 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:07:48,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:07:48,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 91 [2023-11-29 03:07:48,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:08:02,428 INFO L124 PetriNetUnfolderBase]: 36448/55863 cut-off events. [2023-11-29 03:08:02,429 INFO L125 PetriNetUnfolderBase]: For 115892/118191 co-relation queries the response was YES. [2023-11-29 03:08:02,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194831 conditions, 55863 events. 36448/55863 cut-off events. For 115892/118191 co-relation queries the response was YES. Maximal size of possible extension queue 2778. Compared 465322 event pairs, 6987 based on Foata normal form. 1499/45280 useless extension candidates. Maximal degree in co-relation 194682. Up to 34465 conditions per place. [2023-11-29 03:08:03,125 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 191 selfloop transitions, 27 changer transitions 0/235 dead transitions. [2023-11-29 03:08:03,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 235 transitions, 2338 flow [2023-11-29 03:08:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:08:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:08:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2023-11-29 03:08:03,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2023-11-29 03:08:03,127 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 205 transitions. [2023-11-29 03:08:03,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 205 transitions. [2023-11-29 03:08:03,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:08:03,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 205 transitions. [2023-11-29 03:08:03,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:03,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:03,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:03,129 INFO L175 Difference]: Start difference. First operand has 184 places, 167 transitions, 1512 flow. Second operand 5 states and 205 transitions. [2023-11-29 03:08:03,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 235 transitions, 2338 flow [2023-11-29 03:08:03,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 235 transitions, 2225 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-11-29 03:08:03,384 INFO L231 Difference]: Finished difference. Result has 174 places, 166 transitions, 1455 flow [2023-11-29 03:08:03,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1455, PETRI_PLACES=174, PETRI_TRANSITIONS=166} [2023-11-29 03:08:03,384 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 83 predicate places. [2023-11-29 03:08:03,385 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 166 transitions, 1455 flow [2023-11-29 03:08:03,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:03,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:08:03,385 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:03,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 03:08:03,385 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:08:03,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash 419760892, now seen corresponding path program 2 times [2023-11-29 03:08:03,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:03,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772022201] [2023-11-29 03:08:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:03,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:08:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:03,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772022201] [2023-11-29 03:08:03,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772022201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062991096] [2023-11-29 03:08:03,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:08:03,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:03,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:03,601 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:03,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:08:03,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:08:03,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:08:03,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:08:03,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:08:04,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:08:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:08:04,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062991096] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:08:04,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:08:04,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-11-29 03:08:04,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110706735] [2023-11-29 03:08:04,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:08:04,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:08:04,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:04,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:08:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:08:04,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:08:04,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 166 transitions, 1455 flow. Second operand has 21 states, 21 states have (on average 21.523809523809526) internal successors, (452), 21 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:04,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:08:04,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:08:04,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:08:16,445 INFO L124 PetriNetUnfolderBase]: 29194/45792 cut-off events. [2023-11-29 03:08:16,446 INFO L125 PetriNetUnfolderBase]: For 102718/104656 co-relation queries the response was YES. [2023-11-29 03:08:16,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164458 conditions, 45792 events. 29194/45792 cut-off events. For 102718/104656 co-relation queries the response was YES. Maximal size of possible extension queue 2491. Compared 387483 event pairs, 25561 based on Foata normal form. 154/35205 useless extension candidates. Maximal degree in co-relation 164309. Up to 39792 conditions per place. [2023-11-29 03:08:17,081 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 96 selfloop transitions, 66 changer transitions 1/181 dead transitions. [2023-11-29 03:08:17,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 181 transitions, 1816 flow [2023-11-29 03:08:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:08:17,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:08:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 327 transitions. [2023-11-29 03:08:17,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29945054945054944 [2023-11-29 03:08:17,083 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 327 transitions. [2023-11-29 03:08:17,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 327 transitions. [2023-11-29 03:08:17,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:08:17,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 327 transitions. [2023-11-29 03:08:17,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 27.25) internal successors, (327), 12 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:17,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:17,087 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:17,087 INFO L175 Difference]: Start difference. First operand has 174 places, 166 transitions, 1455 flow. Second operand 12 states and 327 transitions. [2023-11-29 03:08:17,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 181 transitions, 1816 flow [2023-11-29 03:08:17,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 181 transitions, 1762 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:08:17,300 INFO L231 Difference]: Finished difference. Result has 177 places, 152 transitions, 1396 flow [2023-11-29 03:08:17,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1396, PETRI_PLACES=177, PETRI_TRANSITIONS=152} [2023-11-29 03:08:17,301 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 86 predicate places. [2023-11-29 03:08:17,301 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 152 transitions, 1396 flow [2023-11-29 03:08:17,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 21.523809523809526) internal successors, (452), 21 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:17,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:08:17,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:17,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:08:17,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:17,503 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:08:17,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash -474408862, now seen corresponding path program 1 times [2023-11-29 03:08:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:17,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642559877] [2023-11-29 03:08:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:17,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:08:17,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642559877] [2023-11-29 03:08:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642559877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263783355] [2023-11-29 03:08:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:17,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:17,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:17,701 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:17,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:08:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:17,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:08:17,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:08:18,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:08:18,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263783355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:08:18,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:08:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2023-11-29 03:08:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147939329] [2023-11-29 03:08:18,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:08:18,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:08:18,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:18,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:08:18,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:08:18,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:08:18,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 152 transitions, 1396 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) [2023-11-29 03:08:18,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:08:18,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:08:18,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:08:29,811 INFO L124 PetriNetUnfolderBase]: 36258/53554 cut-off events. [2023-11-29 03:08:29,811 INFO L125 PetriNetUnfolderBase]: For 90939/93345 co-relation queries the response was YES. [2023-11-29 03:08:30,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187464 conditions, 53554 events. 36258/53554 cut-off events. For 90939/93345 co-relation queries the response was YES. Maximal size of possible extension queue 2802. Compared 424503 event pairs, 8030 based on Foata normal form. 1318/42325 useless extension candidates. Maximal degree in co-relation 187309. Up to 35409 conditions per place. [2023-11-29 03:08:30,397 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 181 selfloop transitions, 25 changer transitions 0/222 dead transitions. [2023-11-29 03:08:30,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 222 transitions, 2202 flow [2023-11-29 03:08:30,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:08:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:08:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2023-11-29 03:08:30,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065934065934066 [2023-11-29 03:08:30,399 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 222 transitions. [2023-11-29 03:08:30,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 222 transitions. [2023-11-29 03:08:30,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:08:30,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 222 transitions. [2023-11-29 03:08:30,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:30,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:30,400 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:30,400 INFO L175 Difference]: Start difference. First operand has 177 places, 152 transitions, 1396 flow. Second operand 6 states and 222 transitions. [2023-11-29 03:08:30,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 222 transitions, 2202 flow [2023-11-29 03:08:30,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 222 transitions, 2082 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 03:08:30,561 INFO L231 Difference]: Finished difference. Result has 176 places, 153 transitions, 1366 flow [2023-11-29 03:08:30,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1366, PETRI_PLACES=176, PETRI_TRANSITIONS=153} [2023-11-29 03:08:30,562 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 85 predicate places. [2023-11-29 03:08:30,562 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 153 transitions, 1366 flow [2023-11-29 03:08:30,562 INFO L496 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) [2023-11-29 03:08:30,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:08:30,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:30,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:08:30,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:08:30,763 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:08:30,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:30,763 INFO L85 PathProgramCache]: Analyzing trace with hash -701034025, now seen corresponding path program 1 times [2023-11-29 03:08:30,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:30,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111850961] [2023-11-29 03:08:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:30,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:08:31,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:31,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111850961] [2023-11-29 03:08:31,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111850961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:31,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301990356] [2023-11-29 03:08:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:31,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:31,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:31,329 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:31,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:08:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:31,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:08:31,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:31,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:08:31,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:31,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 03:08:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:08:31,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:08:31,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-11-29 03:08:31,854 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 98 treesize of output 94 [2023-11-29 03:08:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:08:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301990356] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:08:31,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:08:31,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 22 [2023-11-29 03:08:31,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814161115] [2023-11-29 03:08:31,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:08:31,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:08:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:31,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:08:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:08:32,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:08:32,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 153 transitions, 1366 flow. Second operand has 23 states, 23 states have (on average 21.565217391304348) internal successors, (496), 23 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:32,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:08:32,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:08:32,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:08:48,713 INFO L124 PetriNetUnfolderBase]: 40380/65000 cut-off events. [2023-11-29 03:08:48,713 INFO L125 PetriNetUnfolderBase]: For 170593/173691 co-relation queries the response was YES. [2023-11-29 03:08:49,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230585 conditions, 65000 events. 40380/65000 cut-off events. For 170593/173691 co-relation queries the response was YES. Maximal size of possible extension queue 3604. Compared 584374 event pairs, 9458 based on Foata normal form. 678/49506 useless extension candidates. Maximal degree in co-relation 230428. Up to 21923 conditions per place. [2023-11-29 03:08:49,565 INFO L140 encePairwiseOnDemand]: 74/91 looper letters, 149 selfloop transitions, 78 changer transitions 0/245 dead transitions. [2023-11-29 03:08:49,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 245 transitions, 2507 flow [2023-11-29 03:08:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:08:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:08:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 357 transitions. [2023-11-29 03:08:49,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3269230769230769 [2023-11-29 03:08:49,567 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 357 transitions. [2023-11-29 03:08:49,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 357 transitions. [2023-11-29 03:08:49,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:08:49,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 357 transitions. [2023-11-29 03:08:49,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 29.75) internal successors, (357), 12 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:49,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:49,569 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:49,569 INFO L175 Difference]: Start difference. First operand has 176 places, 153 transitions, 1366 flow. Second operand 12 states and 357 transitions. [2023-11-29 03:08:49,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 245 transitions, 2507 flow [2023-11-29 03:08:49,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 245 transitions, 2481 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:08:49,807 INFO L231 Difference]: Finished difference. Result has 186 places, 161 transitions, 1572 flow [2023-11-29 03:08:49,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1572, PETRI_PLACES=186, PETRI_TRANSITIONS=161} [2023-11-29 03:08:49,808 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2023-11-29 03:08:49,808 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1572 flow [2023-11-29 03:08:49,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 21.565217391304348) internal successors, (496), 23 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:49,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:08:49,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:08:49,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:08:50,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:08:50,009 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:08:50,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:50,009 INFO L85 PathProgramCache]: Analyzing trace with hash -701034023, now seen corresponding path program 1 times [2023-11-29 03:08:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:50,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078655099] [2023-11-29 03:08:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:08:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078655099] [2023-11-29 03:08:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078655099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:08:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932948576] [2023-11-29 03:08:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:50,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:50,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:50,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:50,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:08:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:50,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 03:08:50,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:50,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 03:08:50,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:08:50,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:08:50,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:08:50,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:08:50,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:08:50,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:08:50,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:08:50,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:08:50,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:08:50,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:08:50,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:08:50,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:08:50,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:08:50,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:08:50,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:08:50,937 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 [2023-11-29 03:08:50,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 03:08:51,026 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:08:51,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:08:51,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 03:08:51,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 03:08:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:08:51,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:08:51,246 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_750 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#3| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_750) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-11-29 03:08:51,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:08:51,404 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 38 [2023-11-29 03:08:51,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:08:51,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-29 03:08:51,419 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 11 treesize of output 9 [2023-11-29 03:08:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-11-29 03:08:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932948576] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:08:51,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:08:51,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 19 [2023-11-29 03:08:51,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894139604] [2023-11-29 03:08:51,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:08:51,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:08:51,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:08:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=308, Unknown=2, NotChecked=36, Total=420 [2023-11-29 03:08:51,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 91 [2023-11-29 03:08:51,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 161 transitions, 1572 flow. Second operand has 21 states, 21 states have (on average 18.476190476190474) internal successors, (388), 21 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:08:51,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:08:51,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 91 [2023-11-29 03:08:51,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:09:10,293 INFO L124 PetriNetUnfolderBase]: 46875/71661 cut-off events. [2023-11-29 03:09:10,293 INFO L125 PetriNetUnfolderBase]: For 203748/206684 co-relation queries the response was YES. [2023-11-29 03:09:10,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286091 conditions, 71661 events. 46875/71661 cut-off events. For 203748/206684 co-relation queries the response was YES. Maximal size of possible extension queue 3721. Compared 611220 event pairs, 21717 based on Foata normal form. 772/56933 useless extension candidates. Maximal degree in co-relation 285916. Up to 37996 conditions per place. [2023-11-29 03:09:11,147 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 192 selfloop transitions, 46 changer transitions 0/252 dead transitions. [2023-11-29 03:09:11,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 252 transitions, 2719 flow [2023-11-29 03:09:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:09:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 03:09:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 422 transitions. [2023-11-29 03:09:11,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2576312576312576 [2023-11-29 03:09:11,149 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 422 transitions. [2023-11-29 03:09:11,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 422 transitions. [2023-11-29 03:09:11,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:09:11,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 422 transitions. [2023-11-29 03:09:11,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 23.444444444444443) internal successors, (422), 18 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:11,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:11,154 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:11,154 INFO L175 Difference]: Start difference. First operand has 186 places, 161 transitions, 1572 flow. Second operand 18 states and 422 transitions. [2023-11-29 03:09:11,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 252 transitions, 2719 flow [2023-11-29 03:09:11,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 252 transitions, 2606 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 03:09:11,415 INFO L231 Difference]: Finished difference. Result has 196 places, 160 transitions, 1547 flow [2023-11-29 03:09:11,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1547, PETRI_PLACES=196, PETRI_TRANSITIONS=160} [2023-11-29 03:09:11,416 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 105 predicate places. [2023-11-29 03:09:11,416 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 160 transitions, 1547 flow [2023-11-29 03:09:11,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.476190476190474) internal successors, (388), 21 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:11,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:09:11,416 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:09:11,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:09:11,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:09:11,617 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:09:11,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash -701034022, now seen corresponding path program 1 times [2023-11-29 03:09:11,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:11,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553562070] [2023-11-29 03:09:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:11,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:09:12,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:12,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553562070] [2023-11-29 03:09:12,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553562070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:09:12,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570286347] [2023-11-29 03:09:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:12,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:09:12,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:09:12,238 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:09:12,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:09:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:12,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 03:09:12,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:09:12,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 03:09:12,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:09:12,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:09:12,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:09:12,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:09:12,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:09:12,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:09:12,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:09:12,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:09:12,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:09:12,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:09:12,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:09:12,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:09:12,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:12,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:09:12,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:09:12,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 03:09:12,689 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:09:12,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:09:12,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 03:09:12,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 03:09:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:12,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:09:13,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:09:13,034 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 36 [2023-11-29 03:09:13,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:09:13,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-29 03:09:13,046 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 9 treesize of output 7 [2023-11-29 03:09:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:09:13,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570286347] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:09:13,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:09:13,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 19 [2023-11-29 03:09:13,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301465940] [2023-11-29 03:09:13,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:09:13,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:09:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:13,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:09:13,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=339, Unknown=2, NotChecked=0, Total=420 [2023-11-29 03:09:13,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 91 [2023-11-29 03:09:13,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 160 transitions, 1547 flow. Second operand has 21 states, 21 states have (on average 18.476190476190474) internal successors, (388), 21 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:13,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:09:13,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 91 [2023-11-29 03:09:13,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:09:29,593 INFO L124 PetriNetUnfolderBase]: 44508/68252 cut-off events. [2023-11-29 03:09:29,593 INFO L125 PetriNetUnfolderBase]: For 204083/206833 co-relation queries the response was YES. [2023-11-29 03:09:30,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277278 conditions, 68252 events. 44508/68252 cut-off events. For 204083/206833 co-relation queries the response was YES. Maximal size of possible extension queue 3491. Compared 579306 event pairs, 21567 based on Foata normal form. 712/55692 useless extension candidates. Maximal degree in co-relation 277102. Up to 37996 conditions per place. [2023-11-29 03:09:30,389 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 191 selfloop transitions, 46 changer transitions 0/251 dead transitions. [2023-11-29 03:09:30,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 251 transitions, 2692 flow [2023-11-29 03:09:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:09:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 03:09:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 421 transitions. [2023-11-29 03:09:30,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.257020757020757 [2023-11-29 03:09:30,391 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 421 transitions. [2023-11-29 03:09:30,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 421 transitions. [2023-11-29 03:09:30,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:09:30,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 421 transitions. [2023-11-29 03:09:30,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 23.38888888888889) internal successors, (421), 18 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:30,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:30,395 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:30,395 INFO L175 Difference]: Start difference. First operand has 196 places, 160 transitions, 1547 flow. Second operand 18 states and 421 transitions. [2023-11-29 03:09:30,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 251 transitions, 2692 flow [2023-11-29 03:09:30,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 251 transitions, 2580 flow, removed 2 selfloop flow, removed 17 redundant places. [2023-11-29 03:09:30,677 INFO L231 Difference]: Finished difference. Result has 196 places, 159 transitions, 1523 flow [2023-11-29 03:09:30,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1523, PETRI_PLACES=196, PETRI_TRANSITIONS=159} [2023-11-29 03:09:30,678 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 105 predicate places. [2023-11-29 03:09:30,679 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 159 transitions, 1523 flow [2023-11-29 03:09:30,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.476190476190474) internal successors, (388), 21 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:30,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:09:30,679 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:09:30,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:09:30,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:09:30,880 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:09:30,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash -701034026, now seen corresponding path program 2 times [2023-11-29 03:09:30,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:30,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493100180] [2023-11-29 03:09:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:30,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:09:31,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:31,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493100180] [2023-11-29 03:09:31,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493100180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:09:31,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752687372] [2023-11-29 03:09:31,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:09:31,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:09:31,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:09:31,471 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:09:31,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:09:31,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:09:31,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:09:31,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 03:09:31,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:09:31,782 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 15 treesize of output 1 [2023-11-29 03:09:31,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:09:31,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:09:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:09:31,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:09:32,133 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 [2023-11-29 03:09:32,137 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 52 treesize of output 50 [2023-11-29 03:09:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:09:32,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752687372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:09:32,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:09:32,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 23 [2023-11-29 03:09:32,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749784819] [2023-11-29 03:09:32,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:09:32,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:09:32,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:32,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:09:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:09:32,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:09:32,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 159 transitions, 1523 flow. Second operand has 24 states, 24 states have (on average 21.583333333333332) internal successors, (518), 24 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:32,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:09:32,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:09:32,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:09:45,158 INFO L124 PetriNetUnfolderBase]: 34899/56353 cut-off events. [2023-11-29 03:09:45,158 INFO L125 PetriNetUnfolderBase]: For 176410/179234 co-relation queries the response was YES. [2023-11-29 03:09:45,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228164 conditions, 56353 events. 34899/56353 cut-off events. For 176410/179234 co-relation queries the response was YES. Maximal size of possible extension queue 3033. Compared 490815 event pairs, 8492 based on Foata normal form. 1700/46252 useless extension candidates. Maximal degree in co-relation 227994. Up to 19062 conditions per place. [2023-11-29 03:09:45,840 INFO L140 encePairwiseOnDemand]: 74/91 looper letters, 146 selfloop transitions, 78 changer transitions 0/242 dead transitions. [2023-11-29 03:09:45,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 242 transitions, 2624 flow [2023-11-29 03:09:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:09:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:09:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 354 transitions. [2023-11-29 03:09:45,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3241758241758242 [2023-11-29 03:09:45,841 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 354 transitions. [2023-11-29 03:09:45,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 354 transitions. [2023-11-29 03:09:45,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:09:45,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 354 transitions. [2023-11-29 03:09:45,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 29.5) internal successors, (354), 12 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:45,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:45,844 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:45,844 INFO L175 Difference]: Start difference. First operand has 196 places, 159 transitions, 1523 flow. Second operand 12 states and 354 transitions. [2023-11-29 03:09:45,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 242 transitions, 2624 flow [2023-11-29 03:09:46,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 242 transitions, 2547 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-29 03:09:46,016 INFO L231 Difference]: Finished difference. Result has 193 places, 158 transitions, 1598 flow [2023-11-29 03:09:46,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1598, PETRI_PLACES=193, PETRI_TRANSITIONS=158} [2023-11-29 03:09:46,016 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 102 predicate places. [2023-11-29 03:09:46,017 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 158 transitions, 1598 flow [2023-11-29 03:09:46,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 21.583333333333332) internal successors, (518), 24 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:46,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:09:46,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:09:46,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:09:46,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:09:46,218 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:09:46,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash -640335217, now seen corresponding path program 1 times [2023-11-29 03:09:46,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266222739] [2023-11-29 03:09:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:46,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:09:46,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266222739] [2023-11-29 03:09:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266222739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:09:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766585922] [2023-11-29 03:09:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:46,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:09:46,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:09:46,405 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:09:46,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 03:09:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:46,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:09:46,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:09:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:09:46,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:09:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:09:46,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766585922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:09:46,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:09:46,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 03:09:46,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489788006] [2023-11-29 03:09:46,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:09:46,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:09:46,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:09:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:09:47,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 91 [2023-11-29 03:09:47,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 158 transitions, 1598 flow. Second operand has 20 states, 20 states have (on average 17.95) internal successors, (359), 20 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:09:47,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:09:47,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 91 [2023-11-29 03:09:47,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:10:02,622 INFO L124 PetriNetUnfolderBase]: 38471/56085 cut-off events. [2023-11-29 03:10:02,623 INFO L125 PetriNetUnfolderBase]: For 163456/166624 co-relation queries the response was YES. [2023-11-29 03:10:02,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244827 conditions, 56085 events. 38471/56085 cut-off events. For 163456/166624 co-relation queries the response was YES. Maximal size of possible extension queue 2895. Compared 431124 event pairs, 32498 based on Foata normal form. 194/45056 useless extension candidates. Maximal degree in co-relation 244650. Up to 52066 conditions per place. [2023-11-29 03:10:03,284 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 71 selfloop transitions, 37 changer transitions 78/200 dead transitions. [2023-11-29 03:10:03,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 200 transitions, 2201 flow [2023-11-29 03:10:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:10:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 03:10:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 344 transitions. [2023-11-29 03:10:03,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27001569858712715 [2023-11-29 03:10:03,286 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 344 transitions. [2023-11-29 03:10:03,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 344 transitions. [2023-11-29 03:10:03,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:10:03,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 344 transitions. [2023-11-29 03:10:03,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 24.571428571428573) internal successors, (344), 14 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:03,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 91.0) internal successors, (1365), 15 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:03,288 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 91.0) internal successors, (1365), 15 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:03,288 INFO L175 Difference]: Start difference. First operand has 193 places, 158 transitions, 1598 flow. Second operand 14 states and 344 transitions. [2023-11-29 03:10:03,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 200 transitions, 2201 flow [2023-11-29 03:10:03,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 200 transitions, 2064 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-29 03:10:03,960 INFO L231 Difference]: Finished difference. Result has 194 places, 122 transitions, 1121 flow [2023-11-29 03:10:03,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1121, PETRI_PLACES=194, PETRI_TRANSITIONS=122} [2023-11-29 03:10:03,961 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 103 predicate places. [2023-11-29 03:10:03,961 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 122 transitions, 1121 flow [2023-11-29 03:10:03,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.95) internal successors, (359), 20 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:03,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:10:03,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:10:03,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 03:10:04,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 03:10:04,162 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:10:04,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:04,162 INFO L85 PathProgramCache]: Analyzing trace with hash 574134959, now seen corresponding path program 2 times [2023-11-29 03:10:04,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:04,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779510697] [2023-11-29 03:10:04,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:04,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:10:04,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:04,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779510697] [2023-11-29 03:10:04,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779510697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:04,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643446776] [2023-11-29 03:10:04,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:10:04,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:04,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:04,928 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:10:04,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 03:10:05,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:10:05,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:10:05,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 03:10:05,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:10:05,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:10:05,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:10:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:10:05,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:10:06,299 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 28 treesize of output 26 [2023-11-29 03:10:06,304 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 64 treesize of output 58 [2023-11-29 03:10:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:10:06,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643446776] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:10:06,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:10:06,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2023-11-29 03:10:06,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753341936] [2023-11-29 03:10:06,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:10:06,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 03:10:06,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:06,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 03:10:06,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 03:10:07,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2023-11-29 03:10:07,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 122 transitions, 1121 flow. Second operand has 38 states, 38 states have (on average 20.5) internal successors, (779), 38 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:07,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:10:07,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2023-11-29 03:10:07,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:10:27,006 INFO L124 PetriNetUnfolderBase]: 47790/70898 cut-off events. [2023-11-29 03:10:27,007 INFO L125 PetriNetUnfolderBase]: For 189997/194046 co-relation queries the response was YES. [2023-11-29 03:10:27,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309656 conditions, 70898 events. 47790/70898 cut-off events. For 189997/194046 co-relation queries the response was YES. Maximal size of possible extension queue 3682. Compared 583614 event pairs, 17913 based on Foata normal form. 399/56739 useless extension candidates. Maximal degree in co-relation 309612. Up to 12433 conditions per place. [2023-11-29 03:10:27,882 INFO L140 encePairwiseOnDemand]: 73/91 looper letters, 312 selfloop transitions, 70 changer transitions 0/397 dead transitions. [2023-11-29 03:10:27,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 397 transitions, 3683 flow [2023-11-29 03:10:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:10:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 03:10:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 685 transitions. [2023-11-29 03:10:27,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358451072736787 [2023-11-29 03:10:27,884 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 685 transitions. [2023-11-29 03:10:27,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 685 transitions. [2023-11-29 03:10:27,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:10:27,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 685 transitions. [2023-11-29 03:10:27,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 32.61904761904762) internal successors, (685), 21 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:27,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 91.0) internal successors, (2002), 22 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:27,887 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 91.0) internal successors, (2002), 22 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:27,888 INFO L175 Difference]: Start difference. First operand has 194 places, 122 transitions, 1121 flow. Second operand 21 states and 685 transitions. [2023-11-29 03:10:27,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 397 transitions, 3683 flow [2023-11-29 03:10:35,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 397 transitions, 3244 flow, removed 82 selfloop flow, removed 26 redundant places. [2023-11-29 03:10:35,079 INFO L231 Difference]: Finished difference. Result has 168 places, 141 transitions, 1132 flow [2023-11-29 03:10:35,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1132, PETRI_PLACES=168, PETRI_TRANSITIONS=141} [2023-11-29 03:10:35,079 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 77 predicate places. [2023-11-29 03:10:35,079 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 141 transitions, 1132 flow [2023-11-29 03:10:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 20.5) internal successors, (779), 38 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:35,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:10:35,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:10:35,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 03:10:35,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 03:10:35,281 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:10:35,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash 574134960, now seen corresponding path program 3 times [2023-11-29 03:10:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:35,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091981503] [2023-11-29 03:10:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:35,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:10:36,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091981503] [2023-11-29 03:10:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091981503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:36,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756694737] [2023-11-29 03:10:36,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:10:36,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:36,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:36,252 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:10:36,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 03:10:36,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 03:10:36,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:10:36,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 03:10:36,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:10:36,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:10:36,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 03:10:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:10:37,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:10:37,494 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 26 treesize of output 24 [2023-11-29 03:10:37,498 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 56 treesize of output 50 [2023-11-29 03:10:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:10:37,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756694737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:10:37,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:10:37,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2023-11-29 03:10:37,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709957005] [2023-11-29 03:10:37,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:10:37,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 03:10:37,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 03:10:37,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1229, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 03:10:38,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2023-11-29 03:10:38,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 141 transitions, 1132 flow. Second operand has 38 states, 38 states have (on average 20.5) internal successors, (779), 38 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:38,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:10:38,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2023-11-29 03:10:38,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:10:56,663 INFO L124 PetriNetUnfolderBase]: 46833/69183 cut-off events. [2023-11-29 03:10:56,664 INFO L125 PetriNetUnfolderBase]: For 130041/130041 co-relation queries the response was YES. [2023-11-29 03:10:57,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277516 conditions, 69183 events. 46833/69183 cut-off events. For 130041/130041 co-relation queries the response was YES. Maximal size of possible extension queue 3565. Compared 565840 event pairs, 17913 based on Foata normal form. 398/55269 useless extension candidates. Maximal degree in co-relation 277390. Up to 12313 conditions per place. [2023-11-29 03:10:57,384 INFO L140 encePairwiseOnDemand]: 74/91 looper letters, 276 selfloop transitions, 72 changer transitions 0/363 dead transitions. [2023-11-29 03:10:57,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 363 transitions, 3152 flow [2023-11-29 03:10:57,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:10:57,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 03:10:57,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 699 transitions. [2023-11-29 03:10:57,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33397037744863833 [2023-11-29 03:10:57,386 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 699 transitions. [2023-11-29 03:10:57,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 699 transitions. [2023-11-29 03:10:57,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:10:57,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 699 transitions. [2023-11-29 03:10:57,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 30.391304347826086) internal successors, (699), 23 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:57,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 91.0) internal successors, (2184), 24 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:57,389 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 91.0) internal successors, (2184), 24 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:57,389 INFO L175 Difference]: Start difference. First operand has 168 places, 141 transitions, 1132 flow. Second operand 23 states and 699 transitions. [2023-11-29 03:10:57,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 363 transitions, 3152 flow [2023-11-29 03:11:00,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 363 transitions, 3014 flow, removed 2 selfloop flow, removed 16 redundant places. [2023-11-29 03:11:00,505 INFO L231 Difference]: Finished difference. Result has 174 places, 142 transitions, 1142 flow [2023-11-29 03:11:00,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1142, PETRI_PLACES=174, PETRI_TRANSITIONS=142} [2023-11-29 03:11:00,506 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 83 predicate places. [2023-11-29 03:11:00,506 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 142 transitions, 1142 flow [2023-11-29 03:11:00,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 20.5) internal successors, (779), 38 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:00,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:11:00,506 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:00,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 03:11:00,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 03:11:00,707 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:11:00,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash 616223682, now seen corresponding path program 1 times [2023-11-29 03:11:00,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:00,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643772487] [2023-11-29 03:11:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:00,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:11:00,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643772487] [2023-11-29 03:11:00,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643772487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:11:00,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:11:00,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:11:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289105759] [2023-11-29 03:11:00,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:11:00,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:11:00,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:00,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:11:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:11:00,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 91 [2023-11-29 03:11:00,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 142 transitions, 1142 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:00,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:11:00,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 91 [2023-11-29 03:11:00,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:11:19,191 INFO L124 PetriNetUnfolderBase]: 56350/83720 cut-off events. [2023-11-29 03:11:19,191 INFO L125 PetriNetUnfolderBase]: For 179813/180813 co-relation queries the response was YES. [2023-11-29 03:11:19,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331782 conditions, 83720 events. 56350/83720 cut-off events. For 179813/180813 co-relation queries the response was YES. Maximal size of possible extension queue 3972. Compared 695726 event pairs, 29279 based on Foata normal form. 2586/68972 useless extension candidates. Maximal degree in co-relation 331661. Up to 57909 conditions per place. [2023-11-29 03:11:20,291 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 229 selfloop transitions, 4 changer transitions 0/248 dead transitions. [2023-11-29 03:11:20,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 248 transitions, 2340 flow [2023-11-29 03:11:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:11:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:11:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2023-11-29 03:11:20,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274725274725275 [2023-11-29 03:11:20,293 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 192 transitions. [2023-11-29 03:11:20,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 192 transitions. [2023-11-29 03:11:20,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:11:20,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 192 transitions. [2023-11-29 03:11:20,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:20,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:20,295 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:20,295 INFO L175 Difference]: Start difference. First operand has 174 places, 142 transitions, 1142 flow. Second operand 4 states and 192 transitions. [2023-11-29 03:11:20,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 248 transitions, 2340 flow [2023-11-29 03:11:22,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 248 transitions, 2184 flow, removed 10 selfloop flow, removed 18 redundant places. [2023-11-29 03:11:22,285 INFO L231 Difference]: Finished difference. Result has 161 places, 143 transitions, 1045 flow [2023-11-29 03:11:22,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1045, PETRI_PLACES=161, PETRI_TRANSITIONS=143} [2023-11-29 03:11:22,286 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 70 predicate places. [2023-11-29 03:11:22,286 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 143 transitions, 1045 flow [2023-11-29 03:11:22,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:22,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:11:22,287 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:22,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 03:11:22,287 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:11:22,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:22,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1883225224, now seen corresponding path program 2 times [2023-11-29 03:11:22,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:22,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288928471] [2023-11-29 03:11:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:22,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288928471] [2023-11-29 03:11:22,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288928471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890646041] [2023-11-29 03:11:22,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:11:22,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:22,905 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:22,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 03:11:23,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:11:23,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:11:23,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 03:11:23,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:23,432 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 [2023-11-29 03:11:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:23,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:24,170 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 [2023-11-29 03:11:24,174 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 [2023-11-29 03:11:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890646041] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:24,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:11:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 41 [2023-11-29 03:11:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966776377] [2023-11-29 03:11:24,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:24,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 03:11:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:24,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 03:11:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1612, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 03:11:25,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 91 [2023-11-29 03:11:25,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 143 transitions, 1045 flow. Second operand has 43 states, 43 states have (on average 17.325581395348838) internal successors, (745), 43 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:25,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:11:25,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 91 [2023-11-29 03:11:25,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:11:47,209 INFO L124 PetriNetUnfolderBase]: 63744/92186 cut-off events. [2023-11-29 03:11:47,210 INFO L125 PetriNetUnfolderBase]: For 224898/227521 co-relation queries the response was YES. [2023-11-29 03:11:47,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373302 conditions, 92186 events. 63744/92186 cut-off events. For 224898/227521 co-relation queries the response was YES. Maximal size of possible extension queue 4164. Compared 744684 event pairs, 11647 based on Foata normal form. 2654/76274 useless extension candidates. Maximal degree in co-relation 373192. Up to 23600 conditions per place. [2023-11-29 03:11:48,093 INFO L140 encePairwiseOnDemand]: 71/91 looper letters, 485 selfloop transitions, 66 changer transitions 0/564 dead transitions. [2023-11-29 03:11:48,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 564 transitions, 4899 flow [2023-11-29 03:11:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 03:11:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 03:11:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 792 transitions. [2023-11-29 03:11:48,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3001136794240242 [2023-11-29 03:11:48,095 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 792 transitions. [2023-11-29 03:11:48,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 792 transitions. [2023-11-29 03:11:48,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:11:48,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 792 transitions. [2023-11-29 03:11:48,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 27.310344827586206) internal successors, (792), 29 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:48,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 91.0) internal successors, (2730), 30 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:48,099 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 91.0) internal successors, (2730), 30 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:48,099 INFO L175 Difference]: Start difference. First operand has 161 places, 143 transitions, 1045 flow. Second operand 29 states and 792 transitions. [2023-11-29 03:11:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 564 transitions, 4899 flow [2023-11-29 03:11:48,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 564 transitions, 4839 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:11:48,625 INFO L231 Difference]: Finished difference. Result has 194 places, 159 transitions, 1332 flow [2023-11-29 03:11:48,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1332, PETRI_PLACES=194, PETRI_TRANSITIONS=159} [2023-11-29 03:11:48,626 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 103 predicate places. [2023-11-29 03:11:48,626 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 159 transitions, 1332 flow [2023-11-29 03:11:48,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 17.325581395348838) internal successors, (745), 43 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:48,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:11:48,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:48,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 03:11:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:48,827 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:11:48,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1883225225, now seen corresponding path program 1 times [2023-11-29 03:11:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:48,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639760704] [2023-11-29 03:11:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:48,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:49,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:49,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639760704] [2023-11-29 03:11:49,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639760704] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:49,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273650770] [2023-11-29 03:11:49,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:49,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:49,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:49,258 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:49,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 03:11:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:49,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:11:49,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:49,496 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 [2023-11-29 03:11:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:11:49,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:49,676 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 [2023-11-29 03:11:49,678 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 [2023-11-29 03:11:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:11:49,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273650770] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:49,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:11:49,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2023-11-29 03:11:49,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846994985] [2023-11-29 03:11:49,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:49,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:11:49,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:11:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:11:50,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 91 [2023-11-29 03:11:50,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 159 transitions, 1332 flow. Second operand has 28 states, 28 states have (on average 18.464285714285715) internal successors, (517), 28 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:50,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:11:50,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 91 [2023-11-29 03:11:50,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:12:16,684 INFO L124 PetriNetUnfolderBase]: 78708/117078 cut-off events. [2023-11-29 03:12:16,684 INFO L125 PetriNetUnfolderBase]: For 328724/333158 co-relation queries the response was YES. [2023-11-29 03:12:17,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510176 conditions, 117078 events. 78708/117078 cut-off events. For 328724/333158 co-relation queries the response was YES. Maximal size of possible extension queue 5162. Compared 1002270 event pairs, 18648 based on Foata normal form. 3770/94463 useless extension candidates. Maximal degree in co-relation 510050. Up to 34654 conditions per place. [2023-11-29 03:12:18,283 INFO L140 encePairwiseOnDemand]: 73/91 looper letters, 395 selfloop transitions, 52 changer transitions 0/462 dead transitions. [2023-11-29 03:12:18,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 462 transitions, 4283 flow [2023-11-29 03:12:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:12:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 03:12:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 506 transitions. [2023-11-29 03:12:18,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3089133089133089 [2023-11-29 03:12:18,285 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 506 transitions. [2023-11-29 03:12:18,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 506 transitions. [2023-11-29 03:12:18,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:12:18,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 506 transitions. [2023-11-29 03:12:18,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 28.11111111111111) internal successors, (506), 18 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:18,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:18,290 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:18,290 INFO L175 Difference]: Start difference. First operand has 194 places, 159 transitions, 1332 flow. Second operand 18 states and 506 transitions. [2023-11-29 03:12:18,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 462 transitions, 4283 flow [2023-11-29 03:12:22,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 462 transitions, 4132 flow, removed 7 selfloop flow, removed 22 redundant places. [2023-11-29 03:12:22,786 INFO L231 Difference]: Finished difference. Result has 191 places, 173 transitions, 1483 flow [2023-11-29 03:12:22,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1483, PETRI_PLACES=191, PETRI_TRANSITIONS=173} [2023-11-29 03:12:22,787 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 100 predicate places. [2023-11-29 03:12:22,787 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 173 transitions, 1483 flow [2023-11-29 03:12:22,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 18.464285714285715) internal successors, (517), 28 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:22,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:12:22,787 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:22,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 03:12:22,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 03:12:22,988 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:12:22,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:22,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1883225215, now seen corresponding path program 1 times [2023-11-29 03:12:22,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:22,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234669837] [2023-11-29 03:12:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:22,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:23,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:12:23,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:23,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234669837] [2023-11-29 03:12:23,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234669837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:12:23,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:12:23,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:12:23,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408462277] [2023-11-29 03:12:23,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:12:23,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:12:23,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:23,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:12:23,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:12:23,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2023-11-29 03:12:23,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 173 transitions, 1483 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:23,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:12:23,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2023-11-29 03:12:23,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:12:47,650 INFO L124 PetriNetUnfolderBase]: 57113/84673 cut-off events. [2023-11-29 03:12:47,651 INFO L125 PetriNetUnfolderBase]: For 333593/335192 co-relation queries the response was YES. [2023-11-29 03:12:48,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403341 conditions, 84673 events. 57113/84673 cut-off events. For 333593/335192 co-relation queries the response was YES. Maximal size of possible extension queue 3793. Compared 715333 event pairs, 48365 based on Foata normal form. 1159/64938 useless extension candidates. Maximal degree in co-relation 403226. Up to 79216 conditions per place. [2023-11-29 03:12:49,039 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 146 selfloop transitions, 1 changer transitions 0/169 dead transitions. [2023-11-29 03:12:49,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 169 transitions, 1729 flow [2023-11-29 03:12:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:12:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:12:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-29 03:12:49,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2023-11-29 03:12:49,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-29 03:12:49,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-29 03:12:49,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:12:49,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-29 03:12:49,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:49,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:49,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:49,043 INFO L175 Difference]: Start difference. First operand has 191 places, 173 transitions, 1483 flow. Second operand 3 states and 119 transitions. [2023-11-29 03:12:49,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 169 transitions, 1729 flow [2023-11-29 03:12:50,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 169 transitions, 1632 flow, removed 3 selfloop flow, removed 15 redundant places. [2023-11-29 03:12:50,557 INFO L231 Difference]: Finished difference. Result has 177 places, 169 transitions, 1340 flow [2023-11-29 03:12:50,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1340, PETRI_PLACES=177, PETRI_TRANSITIONS=169} [2023-11-29 03:12:50,558 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 86 predicate places. [2023-11-29 03:12:50,558 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 169 transitions, 1340 flow [2023-11-29 03:12:50,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:50,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:12:50,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:50,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 03:12:50,559 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:12:50,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:50,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1883225222, now seen corresponding path program 1 times [2023-11-29 03:12:50,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:50,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423591825] [2023-11-29 03:12:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:50,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:12:51,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:51,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423591825] [2023-11-29 03:12:51,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423591825] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:12:51,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47330307] [2023-11-29 03:12:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:51,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:51,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:12:51,058 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:12:51,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 03:12:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:51,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 03:12:51,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:12:51,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 03:12:51,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:12:51,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:12:51,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:12:51,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:12:51,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:12:51,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:12:51,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:12:51,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:12:51,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:12:51,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:12:51,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:12:51,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:12:51,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:12:51,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:12:51,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:12:51,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:12:51,689 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:12:51,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:12:51,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 03:12:51,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 03:12:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:51,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:12:52,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:12:52,056 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-29 03:12:52,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:12:52,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-11-29 03:12:52,072 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 13 treesize of output 9 [2023-11-29 03:12:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:12:52,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47330307] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:12:52,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:12:52,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 21 [2023-11-29 03:12:52,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764682455] [2023-11-29 03:12:52,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:12:52,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:12:52,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:52,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:12:52,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=431, Unknown=4, NotChecked=0, Total=506 [2023-11-29 03:12:52,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2023-11-29 03:12:52,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 169 transitions, 1340 flow. Second operand has 23 states, 23 states have (on average 15.391304347826088) internal successors, (354), 23 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:52,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:12:52,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2023-11-29 03:12:52,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:13:23,119 INFO L124 PetriNetUnfolderBase]: 83214/116546 cut-off events. [2023-11-29 03:13:23,119 INFO L125 PetriNetUnfolderBase]: For 319484/322694 co-relation queries the response was YES. [2023-11-29 03:13:24,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517913 conditions, 116546 events. 83214/116546 cut-off events. For 319484/322694 co-relation queries the response was YES. Maximal size of possible extension queue 4206. Compared 901350 event pairs, 33632 based on Foata normal form. 1230/94490 useless extension candidates. Maximal degree in co-relation 517876. Up to 56766 conditions per place. [2023-11-29 03:13:24,649 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 358 selfloop transitions, 39 changer transitions 0/407 dead transitions. [2023-11-29 03:13:24,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 407 transitions, 3673 flow [2023-11-29 03:13:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:13:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 03:13:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 405 transitions. [2023-11-29 03:13:24,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26179702650290887 [2023-11-29 03:13:24,651 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 405 transitions. [2023-11-29 03:13:24,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 405 transitions. [2023-11-29 03:13:24,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:13:24,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 405 transitions. [2023-11-29 03:13:24,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 23.823529411764707) internal successors, (405), 17 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:24,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:24,654 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:24,654 INFO L175 Difference]: Start difference. First operand has 177 places, 169 transitions, 1340 flow. Second operand 17 states and 405 transitions. [2023-11-29 03:13:24,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 407 transitions, 3673 flow [2023-11-29 03:13:28,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 407 transitions, 3672 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:13:28,671 INFO L231 Difference]: Finished difference. Result has 192 places, 167 transitions, 1394 flow [2023-11-29 03:13:28,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1394, PETRI_PLACES=192, PETRI_TRANSITIONS=167} [2023-11-29 03:13:28,672 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 101 predicate places. [2023-11-29 03:13:28,672 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 167 transitions, 1394 flow [2023-11-29 03:13:28,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.391304347826088) internal successors, (354), 23 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:28,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:13:28,673 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:28,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 03:13:28,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 03:13:28,873 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:13:28,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1883225216, now seen corresponding path program 1 times [2023-11-29 03:13:28,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144913300] [2023-11-29 03:13:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:28,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:13:28,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:28,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144913300] [2023-11-29 03:13:28,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144913300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:28,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:28,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:13:28,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823805254] [2023-11-29 03:13:28,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:28,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:28,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:28,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2023-11-29 03:13:28,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 167 transitions, 1394 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:28,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:13:28,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2023-11-29 03:13:28,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:13:46,017 INFO L124 PetriNetUnfolderBase]: 44261/65291 cut-off events. [2023-11-29 03:13:46,017 INFO L125 PetriNetUnfolderBase]: For 298895/300215 co-relation queries the response was YES. [2023-11-29 03:13:46,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309864 conditions, 65291 events. 44261/65291 cut-off events. For 298895/300215 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 526314 event pairs, 36185 based on Foata normal form. 1042/53456 useless extension candidates. Maximal degree in co-relation 309826. Up to 60818 conditions per place. [2023-11-29 03:13:46,903 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 140 selfloop transitions, 1 changer transitions 0/163 dead transitions. [2023-11-29 03:13:46,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 163 transitions, 1632 flow [2023-11-29 03:13:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:13:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-29 03:13:46,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43223443223443225 [2023-11-29 03:13:46,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-29 03:13:46,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-29 03:13:46,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:13:46,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-29 03:13:46,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:46,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:46,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:46,905 INFO L175 Difference]: Start difference. First operand has 192 places, 167 transitions, 1394 flow. Second operand 3 states and 118 transitions. [2023-11-29 03:13:46,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 163 transitions, 1632 flow [2023-11-29 03:13:47,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 163 transitions, 1556 flow, removed 0 selfloop flow, removed 15 redundant places. [2023-11-29 03:13:47,847 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 1276 flow [2023-11-29 03:13:47,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1276, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2023-11-29 03:13:47,847 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 87 predicate places. [2023-11-29 03:13:47,847 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 1276 flow [2023-11-29 03:13:47,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:47,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:13:47,848 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:47,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 03:13:47,848 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:13:47,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1883225221, now seen corresponding path program 1 times [2023-11-29 03:13:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11787417] [2023-11-29 03:13:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:13:48,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11787417] [2023-11-29 03:13:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11787417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147112133] [2023-11-29 03:13:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:48,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:48,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:48,253 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:48,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 03:13:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:48,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 03:13:48,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:48,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 03:13:48,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:13:48,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:13:48,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:13:48,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:13:48,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:13:48,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:13:48,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:13:48,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:13:48,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:13:48,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:13:48,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:13:48,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:13:48,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:13:48,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:48,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:13:48,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:13:48,681 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:13:48,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:13:48,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 03:13:48,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 03:13:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:48,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:48,851 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1230 (Array Int Int))) (< (select (select (store |c_#memory_int#3| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1230) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-11-29 03:13:48,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:13:48,898 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-29 03:13:48,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:13:48,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:13:48,908 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 11 treesize of output 7 [2023-11-29 03:13:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-11-29 03:13:48,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147112133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:48,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:48,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 20 [2023-11-29 03:13:48,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969662] [2023-11-29 03:13:48,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:48,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 03:13:48,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:48,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 03:13:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=360, Unknown=1, NotChecked=38, Total=462 [2023-11-29 03:13:49,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2023-11-29 03:13:49,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 163 transitions, 1276 flow. Second operand has 22 states, 22 states have (on average 15.363636363636363) internal successors, (338), 22 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:49,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:13:49,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2023-11-29 03:13:49,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:14:11,585 INFO L124 PetriNetUnfolderBase]: 77208/107330 cut-off events. [2023-11-29 03:14:11,585 INFO L125 PetriNetUnfolderBase]: For 304623/307653 co-relation queries the response was YES. [2023-11-29 03:14:12,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471991 conditions, 107330 events. 77208/107330 cut-off events. For 304623/307653 co-relation queries the response was YES. Maximal size of possible extension queue 3465. Compared 804503 event pairs, 30331 based on Foata normal form. 1284/89777 useless extension candidates. Maximal degree in co-relation 471953. Up to 53889 conditions per place. [2023-11-29 03:14:13,017 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 352 selfloop transitions, 39 changer transitions 0/401 dead transitions. [2023-11-29 03:14:13,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 401 transitions, 3597 flow [2023-11-29 03:14:13,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:14:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 03:14:13,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 402 transitions. [2023-11-29 03:14:13,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.259857789269554 [2023-11-29 03:14:13,019 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 402 transitions. [2023-11-29 03:14:13,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 402 transitions. [2023-11-29 03:14:13,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:14:13,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 402 transitions. [2023-11-29 03:14:13,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 23.647058823529413) internal successors, (402), 17 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:13,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:13,021 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:13,021 INFO L175 Difference]: Start difference. First operand has 178 places, 163 transitions, 1276 flow. Second operand 17 states and 402 transitions. [2023-11-29 03:14:13,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 401 transitions, 3597 flow [2023-11-29 03:14:15,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 401 transitions, 3596 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:14:15,840 INFO L231 Difference]: Finished difference. Result has 193 places, 161 transitions, 1330 flow [2023-11-29 03:14:15,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1330, PETRI_PLACES=193, PETRI_TRANSITIONS=161} [2023-11-29 03:14:15,841 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 102 predicate places. [2023-11-29 03:14:15,841 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 161 transitions, 1330 flow [2023-11-29 03:14:15,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 15.363636363636363) internal successors, (338), 22 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:15,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:14:15,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:15,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 03:14:16,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:16,042 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:14:16,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash -365169121, now seen corresponding path program 1 times [2023-11-29 03:14:16,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:16,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275483859] [2023-11-29 03:14:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:16,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:14:16,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:16,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275483859] [2023-11-29 03:14:16,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275483859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:16,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:16,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:14:16,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345926836] [2023-11-29 03:14:16,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:16,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:14:16,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:14:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:14:16,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2023-11-29 03:14:16,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 161 transitions, 1330 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:16,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:14:16,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2023-11-29 03:14:16,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:14:25,962 INFO L124 PetriNetUnfolderBase]: 33226/49464 cut-off events. [2023-11-29 03:14:25,962 INFO L125 PetriNetUnfolderBase]: For 243844/244884 co-relation queries the response was YES. [2023-11-29 03:14:26,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233389 conditions, 49464 events. 33226/49464 cut-off events. For 243844/244884 co-relation queries the response was YES. Maximal size of possible extension queue 1792. Compared 388884 event pairs, 26614 based on Foata normal form. 782/43555 useless extension candidates. Maximal degree in co-relation 233350. Up to 45597 conditions per place. [2023-11-29 03:14:26,572 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 132 selfloop transitions, 1 changer transitions 0/155 dead transitions. [2023-11-29 03:14:26,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 155 transitions, 1552 flow [2023-11-29 03:14:26,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:14:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:14:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-29 03:14:26,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-29 03:14:26,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-29 03:14:26,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-29 03:14:26,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:14:26,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-29 03:14:26,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:26,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:26,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:26,574 INFO L175 Difference]: Start difference. First operand has 193 places, 161 transitions, 1330 flow. Second operand 3 states and 117 transitions. [2023-11-29 03:14:26,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 155 transitions, 1552 flow [2023-11-29 03:14:26,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 155 transitions, 1476 flow, removed 0 selfloop flow, removed 15 redundant places. [2023-11-29 03:14:26,922 INFO L231 Difference]: Finished difference. Result has 178 places, 155 transitions, 1212 flow [2023-11-29 03:14:26,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1212, PETRI_PLACES=178, PETRI_TRANSITIONS=155} [2023-11-29 03:14:26,923 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 87 predicate places. [2023-11-29 03:14:26,923 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 155 transitions, 1212 flow [2023-11-29 03:14:26,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:26,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:14:26,923 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:26,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 03:14:26,923 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:14:26,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:26,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1830414799, now seen corresponding path program 4 times [2023-11-29 03:14:26,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:26,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719914684] [2023-11-29 03:14:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:26,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:27,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719914684] [2023-11-29 03:14:27,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719914684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652204522] [2023-11-29 03:14:27,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:14:27,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:27,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:27,096 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:27,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 03:14:27,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:14:27,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:14:27,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 03:14:27,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:27,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:27,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652204522] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:27,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:27,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2023-11-29 03:14:27,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897871395] [2023-11-29 03:14:27,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:27,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 03:14:27,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:27,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 03:14:27,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:14:27,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 91 [2023-11-29 03:14:27,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 155 transitions, 1212 flow. Second operand has 31 states, 31 states have (on average 21.35483870967742) internal successors, (662), 31 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:27,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:14:27,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 91 [2023-11-29 03:14:27,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:14:38,060 INFO L124 PetriNetUnfolderBase]: 33763/49867 cut-off events. [2023-11-29 03:14:38,060 INFO L125 PetriNetUnfolderBase]: For 213176/214406 co-relation queries the response was YES. [2023-11-29 03:14:38,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231904 conditions, 49867 events. 33763/49867 cut-off events. For 213176/214406 co-relation queries the response was YES. Maximal size of possible extension queue 1848. Compared 388485 event pairs, 27116 based on Foata normal form. 852/41798 useless extension candidates. Maximal degree in co-relation 231865. Up to 30833 conditions per place. [2023-11-29 03:14:38,609 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 128 selfloop transitions, 48 changer transitions 0/197 dead transitions. [2023-11-29 03:14:38,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 197 transitions, 1853 flow [2023-11-29 03:14:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:14:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 03:14:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 418 transitions. [2023-11-29 03:14:38,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28708791208791207 [2023-11-29 03:14:38,610 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 418 transitions. [2023-11-29 03:14:38,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 418 transitions. [2023-11-29 03:14:38,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:14:38,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 418 transitions. [2023-11-29 03:14:38,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 26.125) internal successors, (418), 16 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) [2023-11-29 03:14:38,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:38,613 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:38,613 INFO L175 Difference]: Start difference. First operand has 178 places, 155 transitions, 1212 flow. Second operand 16 states and 418 transitions. [2023-11-29 03:14:38,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 197 transitions, 1853 flow [2023-11-29 03:14:38,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 197 transitions, 1852 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:14:38,881 INFO L231 Difference]: Finished difference. Result has 188 places, 146 transitions, 1231 flow [2023-11-29 03:14:38,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1231, PETRI_PLACES=188, PETRI_TRANSITIONS=146} [2023-11-29 03:14:38,882 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 97 predicate places. [2023-11-29 03:14:38,882 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 146 transitions, 1231 flow [2023-11-29 03:14:38,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 21.35483870967742) internal successors, (662), 31 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:38,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:14:38,883 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:38,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 03:14:39,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:39,083 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:14:39,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash -365169120, now seen corresponding path program 1 times [2023-11-29 03:14:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:39,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790461522] [2023-11-29 03:14:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:14:39,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:39,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790461522] [2023-11-29 03:14:39,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790461522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:39,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:39,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:14:39,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280782480] [2023-11-29 03:14:39,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:39,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:14:39,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:39,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:14:39,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:14:39,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2023-11-29 03:14:39,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 146 transitions, 1231 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:39,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:14:39,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2023-11-29 03:14:39,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:14:46,126 INFO L124 PetriNetUnfolderBase]: 25781/38941 cut-off events. [2023-11-29 03:14:46,126 INFO L125 PetriNetUnfolderBase]: For 172171/172957 co-relation queries the response was YES. [2023-11-29 03:14:46,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178751 conditions, 38941 events. 25781/38941 cut-off events. For 172171/172957 co-relation queries the response was YES. Maximal size of possible extension queue 1465. Compared 301154 event pairs, 20324 based on Foata normal form. 592/34634 useless extension candidates. Maximal degree in co-relation 178711. Up to 35496 conditions per place. [2023-11-29 03:14:46,618 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 118 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2023-11-29 03:14:46,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 141 transitions, 1433 flow [2023-11-29 03:14:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:14:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:14:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-29 03:14:46,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42124542124542125 [2023-11-29 03:14:46,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-29 03:14:46,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-29 03:14:46,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:14:46,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-29 03:14:46,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:46,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:46,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:46,620 INFO L175 Difference]: Start difference. First operand has 188 places, 146 transitions, 1231 flow. Second operand 3 states and 115 transitions. [2023-11-29 03:14:46,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 141 transitions, 1433 flow [2023-11-29 03:14:46,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 141 transitions, 1327 flow, removed 0 selfloop flow, removed 17 redundant places. [2023-11-29 03:14:46,840 INFO L231 Difference]: Finished difference. Result has 171 places, 141 transitions, 1091 flow [2023-11-29 03:14:46,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1091, PETRI_PLACES=171, PETRI_TRANSITIONS=141} [2023-11-29 03:14:46,840 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 80 predicate places. [2023-11-29 03:14:46,841 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 141 transitions, 1091 flow [2023-11-29 03:14:46,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:46,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:14:46,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:46,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 03:14:46,841 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:14:46,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:46,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1230967321, now seen corresponding path program 1 times [2023-11-29 03:14:46,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:46,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170340926] [2023-11-29 03:14:46,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:46,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:14:46,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:46,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170340926] [2023-11-29 03:14:46,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170340926] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:46,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413834697] [2023-11-29 03:14:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:46,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:46,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:46,998 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:46,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 03:14:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:47,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:14:47,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:14:47,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:14:47,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413834697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:47,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:47,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-11-29 03:14:47,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693944192] [2023-11-29 03:14:47,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:47,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:14:47,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:47,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:14:47,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:14:47,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 91 [2023-11-29 03:14:47,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 141 transitions, 1091 flow. Second operand has 28 states, 28 states have (on average 17.642857142857142) internal successors, (494), 28 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:47,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:14:47,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 91 [2023-11-29 03:14:47,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:14:55,187 INFO L124 PetriNetUnfolderBase]: 26838/39318 cut-off events. [2023-11-29 03:14:55,187 INFO L125 PetriNetUnfolderBase]: For 168555/169987 co-relation queries the response was YES. [2023-11-29 03:14:55,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175232 conditions, 39318 events. 26838/39318 cut-off events. For 168555/169987 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 280273 event pairs, 13821 based on Foata normal form. 1354/37964 useless extension candidates. Maximal degree in co-relation 175192. Up to 20319 conditions per place. [2023-11-29 03:14:55,583 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 184 selfloop transitions, 48 changer transitions 0/248 dead transitions. [2023-11-29 03:14:55,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 248 transitions, 2350 flow [2023-11-29 03:14:55,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:14:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 03:14:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 430 transitions. [2023-11-29 03:14:55,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2779573367808662 [2023-11-29 03:14:55,585 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 430 transitions. [2023-11-29 03:14:55,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 430 transitions. [2023-11-29 03:14:55,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:14:55,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 430 transitions. [2023-11-29 03:14:55,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 25.294117647058822) internal successors, (430), 17 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:55,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:55,587 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:55,587 INFO L175 Difference]: Start difference. First operand has 171 places, 141 transitions, 1091 flow. Second operand 17 states and 430 transitions. [2023-11-29 03:14:55,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 248 transitions, 2350 flow [2023-11-29 03:14:55,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 248 transitions, 2349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:14:55,826 INFO L231 Difference]: Finished difference. Result has 190 places, 146 transitions, 1246 flow [2023-11-29 03:14:55,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1246, PETRI_PLACES=190, PETRI_TRANSITIONS=146} [2023-11-29 03:14:55,826 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 99 predicate places. [2023-11-29 03:14:55,826 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 146 transitions, 1246 flow [2023-11-29 03:14:55,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 17.642857142857142) internal successors, (494), 28 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:55,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:14:55,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:55,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-29 03:14:56,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 03:14:56,027 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:14:56,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:56,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1996863387, now seen corresponding path program 1 times [2023-11-29 03:14:56,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:56,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147666157] [2023-11-29 03:14:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:56,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:14:56,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147666157] [2023-11-29 03:14:56,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147666157] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250678684] [2023-11-29 03:14:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:56,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:56,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:56,084 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:56,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 03:14:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:56,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:14:56,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:14:56,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:14:56,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250678684] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:56,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:56,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 03:14:56,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193505733] [2023-11-29 03:14:56,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:56,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:14:56,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:14:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:14:56,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 91 [2023-11-29 03:14:56,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 146 transitions, 1246 flow. Second operand has 12 states, 12 states have (on average 23.166666666666668) internal successors, (278), 12 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:14:56,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:14:56,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 91 [2023-11-29 03:14:56,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:15:09,155 INFO L124 PetriNetUnfolderBase]: 43697/66006 cut-off events. [2023-11-29 03:15:09,155 INFO L125 PetriNetUnfolderBase]: For 309863/314177 co-relation queries the response was YES. [2023-11-29 03:15:09,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307224 conditions, 66006 events. 43697/66006 cut-off events. For 309863/314177 co-relation queries the response was YES. Maximal size of possible extension queue 1686. Compared 505932 event pairs, 9727 based on Foata normal form. 3940/65409 useless extension candidates. Maximal degree in co-relation 307179. Up to 21662 conditions per place. [2023-11-29 03:15:10,011 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 578 selfloop transitions, 30 changer transitions 0/625 dead transitions. [2023-11-29 03:15:10,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 625 transitions, 5864 flow [2023-11-29 03:15:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:15:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 03:15:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 621 transitions. [2023-11-29 03:15:10,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48744113029827313 [2023-11-29 03:15:10,013 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 621 transitions. [2023-11-29 03:15:10,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 621 transitions. [2023-11-29 03:15:10,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:15:10,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 621 transitions. [2023-11-29 03:15:10,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 44.357142857142854) internal successors, (621), 14 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:10,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 91.0) internal successors, (1365), 15 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:10,016 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 91.0) internal successors, (1365), 15 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:10,016 INFO L175 Difference]: Start difference. First operand has 190 places, 146 transitions, 1246 flow. Second operand 14 states and 621 transitions. [2023-11-29 03:15:10,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 625 transitions, 5864 flow [2023-11-29 03:15:10,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 625 transitions, 5764 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-11-29 03:15:10,877 INFO L231 Difference]: Finished difference. Result has 194 places, 163 transitions, 1387 flow [2023-11-29 03:15:10,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1387, PETRI_PLACES=194, PETRI_TRANSITIONS=163} [2023-11-29 03:15:10,877 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 103 predicate places. [2023-11-29 03:15:10,877 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 163 transitions, 1387 flow [2023-11-29 03:15:10,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.166666666666668) internal successors, (278), 12 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:10,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:15:10,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:15:10,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 03:15:11,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 03:15:11,078 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:15:11,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash -594545743, now seen corresponding path program 1 times [2023-11-29 03:15:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:11,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531820566] [2023-11-29 03:15:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:11,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:11,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:11,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531820566] [2023-11-29 03:15:11,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531820566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:15:11,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313625613] [2023-11-29 03:15:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:11,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:11,589 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:11,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 03:15:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:11,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 03:15:11,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:12,002 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 [2023-11-29 03:15:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:12,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:15:12,598 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 [2023-11-29 03:15:12,600 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 [2023-11-29 03:15:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:13,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313625613] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:15:13,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:15:13,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 43 [2023-11-29 03:15:13,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020363113] [2023-11-29 03:15:13,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:15:13,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 03:15:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 03:15:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1731, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 03:15:13,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 91 [2023-11-29 03:15:13,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 163 transitions, 1387 flow. Second operand has 45 states, 45 states have (on average 17.533333333333335) internal successors, (789), 45 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:13,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:15:13,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 91 [2023-11-29 03:15:13,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:15:26,010 INFO L124 PetriNetUnfolderBase]: 38884/56036 cut-off events. [2023-11-29 03:15:26,010 INFO L125 PetriNetUnfolderBase]: For 307251/310530 co-relation queries the response was YES. [2023-11-29 03:15:26,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286717 conditions, 56036 events. 38884/56036 cut-off events. For 307251/310530 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 408756 event pairs, 12450 based on Foata normal form. 2612/53730 useless extension candidates. Maximal degree in co-relation 286670. Up to 15790 conditions per place. [2023-11-29 03:15:26,923 INFO L140 encePairwiseOnDemand]: 74/91 looper letters, 290 selfloop transitions, 59 changer transitions 0/377 dead transitions. [2023-11-29 03:15:26,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 377 transitions, 4069 flow [2023-11-29 03:15:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:15:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 03:15:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 569 transitions. [2023-11-29 03:15:26,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2842157842157842 [2023-11-29 03:15:26,925 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 569 transitions. [2023-11-29 03:15:26,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 569 transitions. [2023-11-29 03:15:26,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:15:26,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 569 transitions. [2023-11-29 03:15:26,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 25.863636363636363) internal successors, (569), 22 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:26,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 91.0) internal successors, (2093), 23 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:26,928 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 91.0) internal successors, (2093), 23 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:26,929 INFO L175 Difference]: Start difference. First operand has 194 places, 163 transitions, 1387 flow. Second operand 22 states and 569 transitions. [2023-11-29 03:15:26,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 377 transitions, 4069 flow [2023-11-29 03:15:27,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 377 transitions, 3890 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-29 03:15:27,474 INFO L231 Difference]: Finished difference. Result has 210 places, 166 transitions, 1467 flow [2023-11-29 03:15:27,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1467, PETRI_PLACES=210, PETRI_TRANSITIONS=166} [2023-11-29 03:15:27,475 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 119 predicate places. [2023-11-29 03:15:27,475 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 166 transitions, 1467 flow [2023-11-29 03:15:27,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 17.533333333333335) internal successors, (789), 45 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:27,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:15:27,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:15:27,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 03:15:27,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-29 03:15:27,676 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:15:27,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -594545740, now seen corresponding path program 1 times [2023-11-29 03:15:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007766381] [2023-11-29 03:15:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:15:28,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:28,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007766381] [2023-11-29 03:15:28,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007766381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:15:28,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497683109] [2023-11-29 03:15:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:28,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:28,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:28,228 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:28,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 03:15:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:28,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 03:15:28,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:28,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 03:15:28,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:15:28,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:15:28,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:15:28,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:15:28,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:15:28,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:15:28,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:15:28,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:15:28,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:15:28,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:15:28,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:15:28,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:15:28,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:15:28,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:15:28,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:15:28,739 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:15:28,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:15:28,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 03:15:28,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 03:15:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:29,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:15:29,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:15:29,651 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-11-29 03:15:29,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:15:29,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2023-11-29 03:15:29,663 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 15 treesize of output 9 [2023-11-29 03:15:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:15:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497683109] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:15:29,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:15:29,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 38 [2023-11-29 03:15:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86226617] [2023-11-29 03:15:29,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:15:29,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 03:15:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:29,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 03:15:29,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1397, Unknown=4, NotChecked=0, Total=1560 [2023-11-29 03:15:30,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2023-11-29 03:15:30,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 166 transitions, 1467 flow. Second operand has 40 states, 40 states have (on average 13.1) internal successors, (524), 40 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:15:30,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:15:30,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2023-11-29 03:15:30,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:16:01,426 INFO L124 PetriNetUnfolderBase]: 100293/145459 cut-off events. [2023-11-29 03:16:01,426 INFO L125 PetriNetUnfolderBase]: For 618208/620432 co-relation queries the response was YES. [2023-11-29 03:16:02,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694446 conditions, 145459 events. 100293/145459 cut-off events. For 618208/620432 co-relation queries the response was YES. Maximal size of possible extension queue 2503. Compared 1064416 event pairs, 33012 based on Foata normal form. 2354/137757 useless extension candidates. Maximal degree in co-relation 694397. Up to 38269 conditions per place. [2023-11-29 03:16:03,337 INFO L140 encePairwiseOnDemand]: 77/91 looper letters, 553 selfloop transitions, 76 changer transitions 0/651 dead transitions. [2023-11-29 03:16:03,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 651 transitions, 6682 flow [2023-11-29 03:16:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 03:16:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-29 03:16:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 810 transitions. [2023-11-29 03:16:03,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24725274725274726 [2023-11-29 03:16:03,339 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 810 transitions. [2023-11-29 03:16:03,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 810 transitions. [2023-11-29 03:16:03,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:16:03,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 810 transitions. [2023-11-29 03:16:03,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 22.5) internal successors, (810), 36 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:16:03,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 91.0) internal successors, (3367), 37 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:16:03,344 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 91.0) internal successors, (3367), 37 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:16:03,344 INFO L175 Difference]: Start difference. First operand has 210 places, 166 transitions, 1467 flow. Second operand 36 states and 810 transitions. [2023-11-29 03:16:03,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 651 transitions, 6682 flow [2023-11-29 03:16:06,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 651 transitions, 6530 flow, removed 5 selfloop flow, removed 16 redundant places. [2023-11-29 03:16:06,498 INFO L231 Difference]: Finished difference. Result has 234 places, 189 transitions, 1761 flow [2023-11-29 03:16:06,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1761, PETRI_PLACES=234, PETRI_TRANSITIONS=189} [2023-11-29 03:16:06,498 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 143 predicate places. [2023-11-29 03:16:06,498 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 189 transitions, 1761 flow [2023-11-29 03:16:06,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 13.1) internal successors, (524), 40 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:16:06,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:16:06,499 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:16:06,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 03:16:06,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 03:16:06,699 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-29 03:16:06,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:16:06,699 INFO L85 PathProgramCache]: Analyzing trace with hash -594545739, now seen corresponding path program 1 times [2023-11-29 03:16:06,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:16:06,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742161642] [2023-11-29 03:16:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:06,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:16:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:16:07,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:16:07,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742161642] [2023-11-29 03:16:07,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742161642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:16:07,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347304046] [2023-11-29 03:16:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:07,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:07,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:16:07,230 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:16:07,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63711b-c998-44fd-a03f-dff27a8a5ad7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 03:16:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:07,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 03:16:07,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:16:07,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 03:16:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:16:07,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:16:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:16:07,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:16:07,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:16:07,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:16:07,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:16:07,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:16:07,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:16:07,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:16:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:16:07,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 03:16:07,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:16:07,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:16:07,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 03:16:07,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:16:07,797 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 03:16:07,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 03:16:07,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 03:16:07,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 03:16:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:16:08,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:16:08,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:16:08,826 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-29 03:16:08,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:16:08,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-29 03:16:08,840 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 13 treesize of output 7 [2023-11-29 03:16:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:16:09,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347304046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:16:09,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:16:09,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 38 [2023-11-29 03:16:09,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409282285] [2023-11-29 03:16:09,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:16:09,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 03:16:09,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:16:09,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 03:16:09,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1399, Unknown=2, NotChecked=0, Total=1560 [2023-11-29 03:16:09,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 91 [2023-11-29 03:16:09,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 189 transitions, 1761 flow. Second operand has 40 states, 40 states have (on average 13.1) internal successors, (524), 40 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:16:09,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:16:09,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 91 [2023-11-29 03:16:09,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand