./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/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_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/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_4b371865-1d23-4c0c-a570-90ef2a660fb3/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 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:33:53,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:33:53,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:33:53,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:33:53,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:33:53,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:33:53,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:33:53,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:33:53,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:33:53,555 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:33:53,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:33:53,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:33:53,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:33:53,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:33:53,558 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:33:53,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:33:53,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:33:53,559 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:33:53,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:33:53,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:33:53,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:33:53,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:33:53,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:33:53,562 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:33:53,563 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:33:53,563 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:33:53,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:33:53,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:33:53,565 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:33:53,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:33:53,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:33:53,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:33:53,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:33:53,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:33:53,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:33:53,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:33:53,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:33:53,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:33:53,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:33:53,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:33:53,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:33:53,569 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:33:53,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:33:53,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:33:53,569 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_4b371865-1d23-4c0c-a570-90ef2a660fb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 [2023-11-28 23:33:53,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:33:53,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:33:53,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:33:53,840 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:33:53,840 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:33:53,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-28 23:33:56,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:33:56,909 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:33:56,910 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-28 23:33:56,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/data/fed35f1d4/9a8ef314a3f24e69bd78d85ea7f3d44d/FLAG91ce9091d [2023-11-28 23:33:56,929 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/data/fed35f1d4/9a8ef314a3f24e69bd78d85ea7f3d44d [2023-11-28 23:33:56,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:33:56,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:33:56,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:33:56,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:33:56,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:33:56,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:33:56" (1/1) ... [2023-11-28 23:33:56,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f26e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:56, skipping insertion in model container [2023-11-28 23:33:56,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:33:56" (1/1) ... [2023-11-28 23:33:56,965 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:33:57,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:33:57,135 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:33:57,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:33:57,172 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:33:57,173 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:33:57,179 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:33:57,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57 WrapperNode [2023-11-28 23:33:57,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:33:57,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:33:57,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:33:57,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:33:57,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,229 INFO L138 Inliner]: procedures = 25, calls = 59, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 387 [2023-11-28 23:33:57,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:33:57,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:33:57,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:33:57,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:33:57,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,269 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 8, 2, 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, 2, 1, 1]. [2023-11-28 23:33:57,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:33:57,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:33:57,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:33:57,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:33:57,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (1/1) ... [2023-11-28 23:33:57,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:33:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:57,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:33:57,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:33:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:33:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:33:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:33:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:33:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:33:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 23:33:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 23:33:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:33:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:33:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:33:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 23:33:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 23:33:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 23:33:57,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 23:33:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 23:33:57,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 23:33:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-28 23:33:57,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-28 23:33:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:33:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:33:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:33:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:33:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:33:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-28 23:33:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-28 23:33:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:33:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:33:57,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:33:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:33:57,377 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:33:57,492 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:33:57,494 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:33:58,060 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:33:59,027 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:33:59,027 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-28 23:33:59,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:33:59 BoogieIcfgContainer [2023-11-28 23:33:59,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:33:59,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:33:59,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:33:59,033 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:33:59,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:33:56" (1/3) ... [2023-11-28 23:33:59,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bc2a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:33:59, skipping insertion in model container [2023-11-28 23:33:59,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:57" (2/3) ... [2023-11-28 23:33:59,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bc2a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:33:59, skipping insertion in model container [2023-11-28 23:33:59,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:33:59" (3/3) ... [2023-11-28 23:33:59,036 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2023-11-28 23:33:59,043 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:33:59,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:33:59,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-11-28 23:33:59,053 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:33:59,355 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-28 23:33:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 94 transitions, 209 flow [2023-11-28 23:33:59,445 INFO L124 PetriNetUnfolderBase]: 5/91 cut-off events. [2023-11-28 23:33:59,445 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-28 23:33:59,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 5/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 373 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-11-28 23:33:59,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 94 transitions, 209 flow [2023-11-28 23:33:59,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 89 transitions, 193 flow [2023-11-28 23:33:59,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:33:59,473 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;@4207c550, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:33:59,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-11-28 23:33:59,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:33:59,477 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-28 23:33:59,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:33:59,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:59,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-28 23:33:59,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:33:59,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1381845, now seen corresponding path program 1 times [2023-11-28 23:33:59,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:59,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506390576] [2023-11-28 23:33:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:59,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:33:59,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:59,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506390576] [2023-11-28 23:33:59,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506390576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:59,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:33:59,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:33:59,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630581596] [2023-11-28 23:33:59,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:59,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:33:59,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:59,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:33:59,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:33:59,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 94 [2023-11-28 23:33:59,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:59,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:59,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 94 [2023-11-28 23:33:59,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:02,162 INFO L124 PetriNetUnfolderBase]: 5845/9628 cut-off events. [2023-11-28 23:34:02,162 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2023-11-28 23:34:02,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18263 conditions, 9628 events. 5845/9628 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 75145 event pairs, 5157 based on Foata normal form. 2/5212 useless extension candidates. Maximal degree in co-relation 16826. Up to 8294 conditions per place. [2023-11-28 23:34:02,234 INFO L140 encePairwiseOnDemand]: 65/94 looper letters, 50 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-11-28 23:34:02,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 283 flow [2023-11-28 23:34:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:34:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:34:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2023-11-28 23:34:02,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478723404255317 [2023-11-28 23:34:02,245 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 171 transitions. [2023-11-28 23:34:02,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 171 transitions. [2023-11-28 23:34:02,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:02,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 171 transitions. [2023-11-28 23:34:02,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:02,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:02,255 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:02,256 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 193 flow. Second operand 4 states and 171 transitions. [2023-11-28 23:34:02,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 283 flow [2023-11-28 23:34:02,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 274 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:34:02,265 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 208 flow [2023-11-28 23:34:02,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-11-28 23:34:02,270 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -17 predicate places. [2023-11-28 23:34:02,270 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 208 flow [2023-11-28 23:34:02,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:02,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:02,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-28 23:34:02,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:34:02,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:02,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:02,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1781705397, now seen corresponding path program 1 times [2023-11-28 23:34:02,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:02,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143337447] [2023-11-28 23:34:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:02,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:02,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:02,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143337447] [2023-11-28 23:34:02,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143337447] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042254184] [2023-11-28 23:34:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:02,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:02,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:02,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:02,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:34:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:02,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:34:02,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:02,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:34:02,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042254184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:34:02,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:34:02,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 23:34:02,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993084624] [2023-11-28 23:34:02,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:34:02,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:34:02,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:02,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:34:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:34:02,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 94 [2023-11-28 23:34:02,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:02,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:02,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 94 [2023-11-28 23:34:02,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:04,719 INFO L124 PetriNetUnfolderBase]: 5845/9626 cut-off events. [2023-11-28 23:34:04,719 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-28 23:34:04,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18160 conditions, 9626 events. 5845/9626 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 75214 event pairs, 5157 based on Foata normal form. 2/5213 useless extension candidates. Maximal degree in co-relation 18110. Up to 8284 conditions per place. [2023-11-28 23:34:04,784 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 43 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-11-28 23:34:04,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 310 flow [2023-11-28 23:34:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:34:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:34:04,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2023-11-28 23:34:04,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34574468085106386 [2023-11-28 23:34:04,787 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 195 transitions. [2023-11-28 23:34:04,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 195 transitions. [2023-11-28 23:34:04,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:04,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 195 transitions. [2023-11-28 23:34:04,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:04,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:04,793 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:04,794 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 208 flow. Second operand 6 states and 195 transitions. [2023-11-28 23:34:04,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 310 flow [2023-11-28 23:34:04,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:34:04,797 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 224 flow [2023-11-28 23:34:04,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-11-28 23:34:04,798 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2023-11-28 23:34:04,798 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 224 flow [2023-11-28 23:34:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:04,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:04,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:04,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:34:04,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:05,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:05,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash 641347710, now seen corresponding path program 1 times [2023-11-28 23:34:05,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:05,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267744616] [2023-11-28 23:34:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:05,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:05,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:05,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267744616] [2023-11-28 23:34:05,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267744616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:34:05,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:34:05,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:34:05,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738902391] [2023-11-28 23:34:05,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:34:05,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:34:05,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:05,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:34:05,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:34:05,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 94 [2023-11-28 23:34:05,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:05,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:05,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 94 [2023-11-28 23:34:05,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:06,746 INFO L124 PetriNetUnfolderBase]: 5844/9632 cut-off events. [2023-11-28 23:34:06,746 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-11-28 23:34:06,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18188 conditions, 9632 events. 5844/9632 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 75043 event pairs, 5157 based on Foata normal form. 2/5221 useless extension candidates. Maximal degree in co-relation 18114. Up to 8289 conditions per place. [2023-11-28 23:34:06,808 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 50 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-11-28 23:34:06,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 356 flow [2023-11-28 23:34:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:34:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 23:34:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2023-11-28 23:34:06,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4127659574468085 [2023-11-28 23:34:06,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 194 transitions. [2023-11-28 23:34:06,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 194 transitions. [2023-11-28 23:34:06,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:06,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 194 transitions. [2023-11-28 23:34:06,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:06,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:06,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:06,818 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 224 flow. Second operand 5 states and 194 transitions. [2023-11-28 23:34:06,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 356 flow [2023-11-28 23:34:06,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 325 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-28 23:34:06,823 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 213 flow [2023-11-28 23:34:06,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-11-28 23:34:06,825 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2023-11-28 23:34:06,825 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 213 flow [2023-11-28 23:34:06,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:06,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:06,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-28 23:34:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:34:06,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:06,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 601708975, now seen corresponding path program 1 times [2023-11-28 23:34:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:06,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938746264] [2023-11-28 23:34:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:06,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:06,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938746264] [2023-11-28 23:34:06,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938746264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:06,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529372487] [2023-11-28 23:34:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:06,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:06,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:06,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:06,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:34:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:07,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:34:07,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:07,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:07,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529372487] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:07,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-28 23:34:07,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757698827] [2023-11-28 23:34:07,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:07,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:34:07,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:07,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:34:07,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:34:07,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 94 [2023-11-28 23:34:07,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 213 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:07,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:07,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 94 [2023-11-28 23:34:07,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:08,864 INFO L124 PetriNetUnfolderBase]: 5850/9665 cut-off events. [2023-11-28 23:34:08,864 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-28 23:34:08,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18277 conditions, 9665 events. 5850/9665 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 75379 event pairs, 5157 based on Foata normal form. 9/5262 useless extension candidates. Maximal degree in co-relation 18146. Up to 8298 conditions per place. [2023-11-28 23:34:08,944 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 48 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2023-11-28 23:34:08,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 455 flow [2023-11-28 23:34:08,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:34:08,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:34:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 308 transitions. [2023-11-28 23:34:08,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3276595744680851 [2023-11-28 23:34:08,947 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 308 transitions. [2023-11-28 23:34:08,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 308 transitions. [2023-11-28 23:34:08,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:08,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 308 transitions. [2023-11-28 23:34:08,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.8) internal successors, (308), 10 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:08,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 94.0) internal successors, (1034), 11 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:08,954 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 94.0) internal successors, (1034), 11 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:08,954 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 213 flow. Second operand 10 states and 308 transitions. [2023-11-28 23:34:08,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 455 flow [2023-11-28 23:34:08,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 93 transitions, 445 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-28 23:34:08,958 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 383 flow [2023-11-28 23:34:08,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=383, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2023-11-28 23:34:08,960 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -3 predicate places. [2023-11-28 23:34:08,960 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 383 flow [2023-11-28 23:34:08,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:08,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:08,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:08,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:34:09,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:09,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:09,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash -587528493, now seen corresponding path program 1 times [2023-11-28 23:34:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:09,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015146897] [2023-11-28 23:34:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:09,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015146897] [2023-11-28 23:34:09,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015146897] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320312578] [2023-11-28 23:34:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:09,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:09,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:09,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:09,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:34:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:09,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:34:09,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:09,721 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 [2023-11-28 23:34:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:09,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:09,816 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 [2023-11-28 23:34:09,821 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 [2023-11-28 23:34:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320312578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:09,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:09,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-28 23:34:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774588160] [2023-11-28 23:34:09,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:09,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:34:09,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:34:09,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:34:09,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 94 [2023-11-28 23:34:09,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 383 flow. Second operand has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:09,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:09,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 94 [2023-11-28 23:34:09,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:12,699 INFO L124 PetriNetUnfolderBase]: 9866/16508 cut-off events. [2023-11-28 23:34:12,700 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-28 23:34:12,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30889 conditions, 16508 events. 9866/16508 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1230. Compared 132369 event pairs, 2843 based on Foata normal form. 0/8823 useless extension candidates. Maximal degree in co-relation 30793. Up to 5348 conditions per place. [2023-11-28 23:34:12,801 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 105 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2023-11-28 23:34:12,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 151 transitions, 763 flow [2023-11-28 23:34:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:34:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 23:34:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 327 transitions. [2023-11-28 23:34:12,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348404255319149 [2023-11-28 23:34:12,804 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 327 transitions. [2023-11-28 23:34:12,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 327 transitions. [2023-11-28 23:34:12,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:12,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 327 transitions. [2023-11-28 23:34:12,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.875) internal successors, (327), 8 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) [2023-11-28 23:34:12,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:12,809 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:12,809 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 383 flow. Second operand 8 states and 327 transitions. [2023-11-28 23:34:12,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 151 transitions, 763 flow [2023-11-28 23:34:12,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 151 transitions, 739 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-28 23:34:12,815 INFO L231 Difference]: Finished difference. Result has 98 places, 101 transitions, 456 flow [2023-11-28 23:34:12,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=456, PETRI_PLACES=98, PETRI_TRANSITIONS=101} [2023-11-28 23:34:12,816 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2023-11-28 23:34:12,817 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 101 transitions, 456 flow [2023-11-28 23:34:12,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:12,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:12,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:12,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:34:13,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:13,018 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:13,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:13,018 INFO L85 PathProgramCache]: Analyzing trace with hash -587528492, now seen corresponding path program 1 times [2023-11-28 23:34:13,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:13,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943913488] [2023-11-28 23:34:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:13,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:13,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:13,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943913488] [2023-11-28 23:34:13,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943913488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:13,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497114825] [2023-11-28 23:34:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:13,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:13,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:13,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:13,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:34:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:13,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:34:13,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:13,507 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 [2023-11-28 23:34:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:13,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:13,586 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 [2023-11-28 23:34:13,589 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 [2023-11-28 23:34:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:13,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497114825] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:13,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:13,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-28 23:34:13,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109393664] [2023-11-28 23:34:13,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:13,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:34:13,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:13,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:34:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:34:13,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 94 [2023-11-28 23:34:13,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 101 transitions, 456 flow. Second operand has 11 states, 11 states have (on average 28.727272727272727) internal successors, (316), 11 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:13,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:13,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 94 [2023-11-28 23:34:13,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:16,193 INFO L124 PetriNetUnfolderBase]: 9324/15605 cut-off events. [2023-11-28 23:34:16,193 INFO L125 PetriNetUnfolderBase]: For 3437/3437 co-relation queries the response was YES. [2023-11-28 23:34:16,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34974 conditions, 15605 events. 9324/15605 cut-off events. For 3437/3437 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 124548 event pairs, 2549 based on Foata normal form. 0/8657 useless extension candidates. Maximal degree in co-relation 34877. Up to 4584 conditions per place. [2023-11-28 23:34:16,300 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 104 selfloop transitions, 24 changer transitions 0/150 dead transitions. [2023-11-28 23:34:16,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 150 transitions, 814 flow [2023-11-28 23:34:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:34:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 23:34:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 326 transitions. [2023-11-28 23:34:16,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43351063829787234 [2023-11-28 23:34:16,303 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 326 transitions. [2023-11-28 23:34:16,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 326 transitions. [2023-11-28 23:34:16,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:16,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 326 transitions. [2023-11-28 23:34:16,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.75) internal successors, (326), 8 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:16,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:16,306 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:16,306 INFO L175 Difference]: Start difference. First operand has 98 places, 101 transitions, 456 flow. Second operand 8 states and 326 transitions. [2023-11-28 23:34:16,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 150 transitions, 814 flow [2023-11-28 23:34:16,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 150 transitions, 790 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 23:34:16,317 INFO L231 Difference]: Finished difference. Result has 101 places, 100 transitions, 476 flow [2023-11-28 23:34:16,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=101, PETRI_TRANSITIONS=100} [2023-11-28 23:34:16,318 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 7 predicate places. [2023-11-28 23:34:16,318 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 476 flow [2023-11-28 23:34:16,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.727272727272727) internal successors, (316), 11 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:16,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:16,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:16,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:34:16,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 23:34:16,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:16,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash -587528490, now seen corresponding path program 1 times [2023-11-28 23:34:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:16,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433577734] [2023-11-28 23:34:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433577734] [2023-11-28 23:34:16,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433577734] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:16,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907287364] [2023-11-28 23:34:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:16,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:16,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:16,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:16,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:34:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:17,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-28 23:34:17,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:17,196 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 [2023-11-28 23:34:17,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,206 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 [2023-11-28 23:34:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,216 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 [2023-11-28 23:34:17,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,225 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 [2023-11-28 23:34:17,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,238 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 [2023-11-28 23:34:17,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,251 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 [2023-11-28 23:34:17,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,260 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 [2023-11-28 23:34:17,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,264 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 [2023-11-28 23:34:17,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,271 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 [2023-11-28 23:34:17,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,276 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 [2023-11-28 23:34:17,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,287 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 [2023-11-28 23:34:17,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,293 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 [2023-11-28 23:34:17,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,303 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 [2023-11-28 23:34:17,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,312 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 [2023-11-28 23:34:17,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,320 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 [2023-11-28 23:34:17,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,325 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 [2023-11-28 23:34:17,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,332 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 [2023-11-28 23:34:17,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,337 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 [2023-11-28 23:34:17,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,349 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 [2023-11-28 23:34:17,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,355 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 [2023-11-28 23:34:17,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,362 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 [2023-11-28 23:34:17,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,366 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 [2023-11-28 23:34:17,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,373 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 [2023-11-28 23:34:17,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:17,377 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 [2023-11-28 23:34:17,388 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 [2023-11-28 23:34:17,425 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:34:17,425 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 [2023-11-28 23:34:17,438 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 [2023-11-28 23:34:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:17,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:17,514 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_177 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_177) c_~A~0.base) c_~A~0.offset) 2147483649))) is different from false [2023-11-28 23:34:17,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:34:17,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-28 23:34:17,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:34:17,584 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 [2023-11-28 23:34:17,589 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 [2023-11-28 23:34:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-28 23:34:17,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907287364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:17,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:17,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-28 23:34:17,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106271488] [2023-11-28 23:34:17,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:17,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:34:17,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:34:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-11-28 23:34:17,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 94 [2023-11-28 23:34:17,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 100 transitions, 476 flow. Second operand has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:17,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:17,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 94 [2023-11-28 23:34:17,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:20,730 INFO L124 PetriNetUnfolderBase]: 10950/17549 cut-off events. [2023-11-28 23:34:20,730 INFO L125 PetriNetUnfolderBase]: For 5618/5618 co-relation queries the response was YES. [2023-11-28 23:34:20,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41275 conditions, 17549 events. 10950/17549 cut-off events. For 5618/5618 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 137246 event pairs, 4943 based on Foata normal form. 0/10388 useless extension candidates. Maximal degree in co-relation 41177. Up to 9271 conditions per place. [2023-11-28 23:34:20,838 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 121 selfloop transitions, 19 changer transitions 0/160 dead transitions. [2023-11-28 23:34:20,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 160 transitions, 925 flow [2023-11-28 23:34:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:34:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-28 23:34:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 392 transitions. [2023-11-28 23:34:20,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.379110251450677 [2023-11-28 23:34:20,842 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 392 transitions. [2023-11-28 23:34:20,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 392 transitions. [2023-11-28 23:34:20,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:20,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 392 transitions. [2023-11-28 23:34:20,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 35.63636363636363) internal successors, (392), 11 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:20,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:20,846 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:20,846 INFO L175 Difference]: Start difference. First operand has 101 places, 100 transitions, 476 flow. Second operand 11 states and 392 transitions. [2023-11-28 23:34:20,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 160 transitions, 925 flow [2023-11-28 23:34:20,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 160 transitions, 896 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:34:20,860 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 488 flow [2023-11-28 23:34:20,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=488, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2023-11-28 23:34:20,861 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 12 predicate places. [2023-11-28 23:34:20,861 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 488 flow [2023-11-28 23:34:20,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:20,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:20,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:20,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:34:21,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:21,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:21,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash -587528489, now seen corresponding path program 1 times [2023-11-28 23:34:21,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:21,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221704202] [2023-11-28 23:34:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:21,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:21,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:21,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221704202] [2023-11-28 23:34:21,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221704202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:21,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92994451] [2023-11-28 23:34:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:21,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:21,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:21,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:21,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:34:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:21,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-28 23:34:21,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:21,680 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 [2023-11-28 23:34:21,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,687 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 [2023-11-28 23:34:21,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,694 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 [2023-11-28 23:34:21,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,698 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 [2023-11-28 23:34:21,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,703 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 [2023-11-28 23:34:21,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,708 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 [2023-11-28 23:34:21,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,716 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 [2023-11-28 23:34:21,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,720 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 [2023-11-28 23:34:21,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,726 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 [2023-11-28 23:34:21,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,731 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 [2023-11-28 23:34:21,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,740 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 [2023-11-28 23:34:21,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,747 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 [2023-11-28 23:34:21,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,759 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 [2023-11-28 23:34:21,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,765 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 [2023-11-28 23:34:21,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,773 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 [2023-11-28 23:34:21,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,781 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 [2023-11-28 23:34:21,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,791 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 [2023-11-28 23:34:21,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,802 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 [2023-11-28 23:34:21,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,809 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 [2023-11-28 23:34:21,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,814 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 [2023-11-28 23:34:21,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,820 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 [2023-11-28 23:34:21,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,826 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 [2023-11-28 23:34:21,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,833 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 [2023-11-28 23:34:21,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:34:21,836 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 [2023-11-28 23:34:21,855 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 [2023-11-28 23:34:21,889 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:34:21,890 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 [2023-11-28 23:34:21,900 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 [2023-11-28 23:34:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:21,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:22,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:34:22,042 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 [2023-11-28 23:34:22,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:34:22,054 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 [2023-11-28 23:34:22,060 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 [2023-11-28 23:34:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:22,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92994451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:22,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:22,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-28 23:34:22,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247744635] [2023-11-28 23:34:22,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:22,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:34:22,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:22,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:34:22,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=139, Unknown=5, NotChecked=0, Total=182 [2023-11-28 23:34:22,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 94 [2023-11-28 23:34:22,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 488 flow. Second operand has 14 states, 14 states have (on average 26.857142857142858) internal successors, (376), 14 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:22,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:22,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 94 [2023-11-28 23:34:22,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:24,996 INFO L124 PetriNetUnfolderBase]: 10408/16681 cut-off events. [2023-11-28 23:34:24,996 INFO L125 PetriNetUnfolderBase]: For 7550/7550 co-relation queries the response was YES. [2023-11-28 23:34:25,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40070 conditions, 16681 events. 10408/16681 cut-off events. For 7550/7550 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 126814 event pairs, 3991 based on Foata normal form. 0/10195 useless extension candidates. Maximal degree in co-relation 39971. Up to 9271 conditions per place. [2023-11-28 23:34:25,090 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 120 selfloop transitions, 19 changer transitions 0/159 dead transitions. [2023-11-28 23:34:25,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 159 transitions, 928 flow [2023-11-28 23:34:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:34:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-28 23:34:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 391 transitions. [2023-11-28 23:34:25,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3781431334622824 [2023-11-28 23:34:25,092 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 391 transitions. [2023-11-28 23:34:25,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 391 transitions. [2023-11-28 23:34:25,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:25,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 391 transitions. [2023-11-28 23:34:25,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:25,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:25,096 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:25,096 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 488 flow. Second operand 11 states and 391 transitions. [2023-11-28 23:34:25,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 159 transitions, 928 flow [2023-11-28 23:34:25,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 159 transitions, 893 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-28 23:34:25,105 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 487 flow [2023-11-28 23:34:25,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=487, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2023-11-28 23:34:25,106 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 16 predicate places. [2023-11-28 23:34:25,106 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 487 flow [2023-11-28 23:34:25,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.857142857142858) internal successors, (376), 14 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:25,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:25,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:25,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-28 23:34:25,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:25,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:25,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash -587528484, now seen corresponding path program 1 times [2023-11-28 23:34:25,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:25,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126335614] [2023-11-28 23:34:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:34:25,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:25,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126335614] [2023-11-28 23:34:25,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126335614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:34:25,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:34:25,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:34:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403769175] [2023-11-28 23:34:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:34:25,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:34:25,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:34:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:34:25,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 94 [2023-11-28 23:34:25,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 487 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) [2023-11-28 23:34:25,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:25,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 94 [2023-11-28 23:34:25,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:27,782 INFO L124 PetriNetUnfolderBase]: 8980/15326 cut-off events. [2023-11-28 23:34:27,782 INFO L125 PetriNetUnfolderBase]: For 9506/9506 co-relation queries the response was YES. [2023-11-28 23:34:27,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36554 conditions, 15326 events. 8980/15326 cut-off events. For 9506/9506 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 127702 event pairs, 2157 based on Foata normal form. 0/9794 useless extension candidates. Maximal degree in co-relation 36457. Up to 9267 conditions per place. [2023-11-28 23:34:27,857 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 104 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2023-11-28 23:34:27,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 127 transitions, 756 flow [2023-11-28 23:34:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:34:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:34:27,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-11-28 23:34:27,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-11-28 23:34:27,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-11-28 23:34:27,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-11-28 23:34:27,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:27,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-11-28 23:34:27,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:27,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:27,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:27,860 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 487 flow. Second operand 3 states and 160 transitions. [2023-11-28 23:34:27,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 127 transitions, 756 flow [2023-11-28 23:34:27,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 127 transitions, 719 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-28 23:34:27,883 INFO L231 Difference]: Finished difference. Result has 104 places, 98 transitions, 452 flow [2023-11-28 23:34:27,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=104, PETRI_TRANSITIONS=98} [2023-11-28 23:34:27,884 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 10 predicate places. [2023-11-28 23:34:27,884 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 98 transitions, 452 flow [2023-11-28 23:34:27,884 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) [2023-11-28 23:34:27,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:27,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:27,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 23:34:27,884 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:27,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:27,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2055193421, now seen corresponding path program 1 times [2023-11-28 23:34:27,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:27,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55303315] [2023-11-28 23:34:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:27,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:34:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55303315] [2023-11-28 23:34:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55303315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:34:28,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:34:28,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:34:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123878262] [2023-11-28 23:34:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:34:28,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:34:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:34:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:34:28,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 94 [2023-11-28 23:34:28,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 98 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:28,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:28,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 94 [2023-11-28 23:34:28,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:31,735 INFO L124 PetriNetUnfolderBase]: 14480/23315 cut-off events. [2023-11-28 23:34:31,735 INFO L125 PetriNetUnfolderBase]: For 11328/11328 co-relation queries the response was YES. [2023-11-28 23:34:31,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57928 conditions, 23315 events. 14480/23315 cut-off events. For 11328/11328 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 190327 event pairs, 5039 based on Foata normal form. 0/14789 useless extension candidates. Maximal degree in co-relation 57832. Up to 13739 conditions per place. [2023-11-28 23:34:31,876 INFO L140 encePairwiseOnDemand]: 87/94 looper letters, 110 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2023-11-28 23:34:31,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 134 transitions, 812 flow [2023-11-28 23:34:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:34:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:34:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2023-11-28 23:34:31,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709219858156028 [2023-11-28 23:34:31,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 161 transitions. [2023-11-28 23:34:31,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 161 transitions. [2023-11-28 23:34:31,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:31,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 161 transitions. [2023-11-28 23:34:31,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:31,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:31,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:31,879 INFO L175 Difference]: Start difference. First operand has 104 places, 98 transitions, 452 flow. Second operand 3 states and 161 transitions. [2023-11-28 23:34:31,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 134 transitions, 812 flow [2023-11-28 23:34:31,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 134 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:34:31,885 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 475 flow [2023-11-28 23:34:31,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=475, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2023-11-28 23:34:31,886 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 12 predicate places. [2023-11-28 23:34:31,886 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 475 flow [2023-11-28 23:34:31,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:31,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:31,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:31,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:34:31,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:31,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:31,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2055193430, now seen corresponding path program 1 times [2023-11-28 23:34:31,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:31,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742396561] [2023-11-28 23:34:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:31,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:31,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:31,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742396561] [2023-11-28 23:34:31,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742396561] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:31,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471739620] [2023-11-28 23:34:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:31,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:31,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:31,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:32,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:34:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:32,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:34:32,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:32,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:32,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471739620] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:32,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:32,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-28 23:34:32,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054910988] [2023-11-28 23:34:32,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:32,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-28 23:34:32,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-28 23:34:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:34:32,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 94 [2023-11-28 23:34:32,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 475 flow. Second operand has 17 states, 17 states have (on average 23.705882352941178) internal successors, (403), 17 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:32,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:32,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 94 [2023-11-28 23:34:32,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:36,916 INFO L124 PetriNetUnfolderBase]: 17882/27995 cut-off events. [2023-11-28 23:34:36,917 INFO L125 PetriNetUnfolderBase]: For 15076/15100 co-relation queries the response was YES. [2023-11-28 23:34:36,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74096 conditions, 27995 events. 17882/27995 cut-off events. For 15076/15100 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 220017 event pairs, 14987 based on Foata normal form. 0/18186 useless extension candidates. Maximal degree in co-relation 73965. Up to 20264 conditions per place. [2023-11-28 23:34:37,090 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 114 selfloop transitions, 42 changer transitions 0/178 dead transitions. [2023-11-28 23:34:37,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 178 transitions, 1162 flow [2023-11-28 23:34:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 23:34:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-28 23:34:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 414 transitions. [2023-11-28 23:34:37,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33878887070376434 [2023-11-28 23:34:37,093 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 414 transitions. [2023-11-28 23:34:37,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 414 transitions. [2023-11-28 23:34:37,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:37,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 414 transitions. [2023-11-28 23:34:37,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 31.846153846153847) internal successors, (414), 13 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:37,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:37,097 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:37,097 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 475 flow. Second operand 13 states and 414 transitions. [2023-11-28 23:34:37,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 178 transitions, 1162 flow [2023-11-28 23:34:37,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 178 transitions, 1159 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:34:37,103 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 690 flow [2023-11-28 23:34:37,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=690, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2023-11-28 23:34:37,104 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 26 predicate places. [2023-11-28 23:34:37,104 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 690 flow [2023-11-28 23:34:37,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 23.705882352941178) internal successors, (403), 17 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:37,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:37,104 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-28 23:34:37,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:34:37,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:37,305 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:37,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1407557147, now seen corresponding path program 2 times [2023-11-28 23:34:37,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:37,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819275842] [2023-11-28 23:34:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:37,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:37,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819275842] [2023-11-28 23:34:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819275842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479936723] [2023-11-28 23:34:37,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:34:37,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:37,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:37,420 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:37,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:34:37,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:34:37,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:34:37,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:34:37,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:34:37,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:34:37,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479936723] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:37,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:37,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-28 23:34:37,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548876526] [2023-11-28 23:34:37,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:37,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:34:37,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:34:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:34:37,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 94 [2023-11-28 23:34:37,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 690 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 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) [2023-11-28 23:34:37,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:37,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 94 [2023-11-28 23:34:37,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:42,550 INFO L124 PetriNetUnfolderBase]: 16992/27229 cut-off events. [2023-11-28 23:34:42,551 INFO L125 PetriNetUnfolderBase]: For 18468/18468 co-relation queries the response was YES. [2023-11-28 23:34:42,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74756 conditions, 27229 events. 16992/27229 cut-off events. For 18468/18468 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 220325 event pairs, 15151 based on Foata normal form. 5/18381 useless extension candidates. Maximal degree in co-relation 74536. Up to 23952 conditions per place. [2023-11-28 23:34:42,750 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 52 selfloop transitions, 48 changer transitions 0/123 dead transitions. [2023-11-28 23:34:42,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 123 transitions, 970 flow [2023-11-28 23:34:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 23:34:42,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-28 23:34:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 632 transitions. [2023-11-28 23:34:42,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2801418439716312 [2023-11-28 23:34:42,754 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 632 transitions. [2023-11-28 23:34:42,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 632 transitions. [2023-11-28 23:34:42,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:42,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 632 transitions. [2023-11-28 23:34:42,757 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) [2023-11-28 23:34:42,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 94.0) internal successors, (2350), 25 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:42,761 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 94.0) internal successors, (2350), 25 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:42,761 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 690 flow. Second operand 24 states and 632 transitions. [2023-11-28 23:34:42,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 123 transitions, 970 flow [2023-11-28 23:34:42,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 123 transitions, 922 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:34:42,802 INFO L231 Difference]: Finished difference. Result has 141 places, 123 transitions, 842 flow [2023-11-28 23:34:42,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=842, PETRI_PLACES=141, PETRI_TRANSITIONS=123} [2023-11-28 23:34:42,803 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 47 predicate places. [2023-11-28 23:34:42,803 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 123 transitions, 842 flow [2023-11-28 23:34:42,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 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) [2023-11-28 23:34:42,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:42,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:42,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:34:43,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:43,004 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:43,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1067844123, now seen corresponding path program 1 times [2023-11-28 23:34:43,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:43,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149656962] [2023-11-28 23:34:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:43,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:34:43,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:43,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149656962] [2023-11-28 23:34:43,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149656962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:34:43,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:34:43,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:34:43,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841674370] [2023-11-28 23:34:43,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:34:43,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:34:43,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:34:43,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:34:43,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 94 [2023-11-28 23:34:43,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 123 transitions, 842 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:43,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:43,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 94 [2023-11-28 23:34:43,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:48,290 INFO L124 PetriNetUnfolderBase]: 21508/35167 cut-off events. [2023-11-28 23:34:48,290 INFO L125 PetriNetUnfolderBase]: For 18357/18483 co-relation queries the response was YES. [2023-11-28 23:34:48,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91210 conditions, 35167 events. 21508/35167 cut-off events. For 18357/18483 co-relation queries the response was YES. Maximal size of possible extension queue 1717. Compared 300372 event pairs, 16226 based on Foata normal form. 988/25610 useless extension candidates. Maximal degree in co-relation 91071. Up to 25618 conditions per place. [2023-11-28 23:34:48,535 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 153 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2023-11-28 23:34:48,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 178 transitions, 1312 flow [2023-11-28 23:34:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:34:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:34:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2023-11-28 23:34:48,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2023-11-28 23:34:48,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 202 transitions. [2023-11-28 23:34:48,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 202 transitions. [2023-11-28 23:34:48,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:48,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 202 transitions. [2023-11-28 23:34:48,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:48,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:48,540 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:48,540 INFO L175 Difference]: Start difference. First operand has 141 places, 123 transitions, 842 flow. Second operand 4 states and 202 transitions. [2023-11-28 23:34:48,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 178 transitions, 1312 flow [2023-11-28 23:34:48,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 178 transitions, 1188 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-11-28 23:34:48,560 INFO L231 Difference]: Finished difference. Result has 135 places, 124 transitions, 739 flow [2023-11-28 23:34:48,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=739, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2023-11-28 23:34:48,561 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 41 predicate places. [2023-11-28 23:34:48,561 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 739 flow [2023-11-28 23:34:48,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:48,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:48,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:48,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 23:34:48,562 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:48,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:48,562 INFO L85 PathProgramCache]: Analyzing trace with hash 602158785, now seen corresponding path program 1 times [2023-11-28 23:34:48,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:48,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139909122] [2023-11-28 23:34:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:48,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:48,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139909122] [2023-11-28 23:34:48,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139909122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:48,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005082939] [2023-11-28 23:34:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:48,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:48,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:48,910 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:48,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:34:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:49,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-28 23:34:49,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:49,205 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 [2023-11-28 23:34:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:49,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:49,378 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 [2023-11-28 23:34:49,381 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 [2023-11-28 23:34:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:49,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005082939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:49,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:49,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-28 23:34:49,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762605547] [2023-11-28 23:34:49,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:49,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 23:34:49,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:49,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 23:34:49,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:34:49,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 94 [2023-11-28 23:34:49,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 739 flow. Second operand has 23 states, 23 states have (on average 24.82608695652174) internal successors, (571), 23 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:49,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:49,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 94 [2023-11-28 23:34:49,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:56,908 INFO L124 PetriNetUnfolderBase]: 19989/32677 cut-off events. [2023-11-28 23:34:56,908 INFO L125 PetriNetUnfolderBase]: For 33165/33685 co-relation queries the response was YES. [2023-11-28 23:34:57,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92445 conditions, 32677 events. 19989/32677 cut-off events. For 33165/33685 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 279284 event pairs, 7541 based on Foata normal form. 0/22690 useless extension candidates. Maximal degree in co-relation 92313. Up to 9938 conditions per place. [2023-11-28 23:34:57,125 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 206 selfloop transitions, 72 changer transitions 6/308 dead transitions. [2023-11-28 23:34:57,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 308 transitions, 2236 flow [2023-11-28 23:34:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:34:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-28 23:34:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 670 transitions. [2023-11-28 23:34:57,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3751399776035834 [2023-11-28 23:34:57,128 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 670 transitions. [2023-11-28 23:34:57,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 670 transitions. [2023-11-28 23:34:57,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:57,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 670 transitions. [2023-11-28 23:34:57,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 35.26315789473684) internal successors, (670), 19 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:57,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 94.0) internal successors, (1880), 20 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:57,134 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 94.0) internal successors, (1880), 20 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:57,134 INFO L175 Difference]: Start difference. First operand has 135 places, 124 transitions, 739 flow. Second operand 19 states and 670 transitions. [2023-11-28 23:34:57,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 308 transitions, 2236 flow [2023-11-28 23:34:57,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 308 transitions, 2188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:34:57,154 INFO L231 Difference]: Finished difference. Result has 153 places, 145 transitions, 958 flow [2023-11-28 23:34:57,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=958, PETRI_PLACES=153, PETRI_TRANSITIONS=145} [2023-11-28 23:34:57,155 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 59 predicate places. [2023-11-28 23:34:57,155 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 145 transitions, 958 flow [2023-11-28 23:34:57,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.82608695652174) internal successors, (571), 23 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:57,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:57,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:57,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-28 23:34:57,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:34:57,356 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:34:57,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:57,356 INFO L85 PathProgramCache]: Analyzing trace with hash 602158784, now seen corresponding path program 1 times [2023-11-28 23:34:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:57,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733896084] [2023-11-28 23:34:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:57,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:57,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:57,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733896084] [2023-11-28 23:34:57,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733896084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:57,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015373083] [2023-11-28 23:34:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:57,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:57,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:57,740 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:57,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:34:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:57,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-28 23:34:57,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:58,038 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 [2023-11-28 23:34:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:58,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:58,245 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 [2023-11-28 23:34:58,249 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 [2023-11-28 23:34:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:58,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015373083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:58,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:58,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-11-28 23:34:58,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423093426] [2023-11-28 23:34:58,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:58,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 23:34:58,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:58,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 23:34:58,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:34:58,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 94 [2023-11-28 23:34:58,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 145 transitions, 958 flow. Second operand has 24 states, 24 states have (on average 23.875) internal successors, (573), 24 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:58,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:58,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 94 [2023-11-28 23:34:58,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:05,993 INFO L124 PetriNetUnfolderBase]: 21890/34636 cut-off events. [2023-11-28 23:35:05,993 INFO L125 PetriNetUnfolderBase]: For 31707/32287 co-relation queries the response was YES. [2023-11-28 23:35:06,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106449 conditions, 34636 events. 21890/34636 cut-off events. For 31707/32287 co-relation queries the response was YES. Maximal size of possible extension queue 1790. Compared 285787 event pairs, 9268 based on Foata normal form. 0/25082 useless extension candidates. Maximal degree in co-relation 106302. Up to 10341 conditions per place. [2023-11-28 23:35:06,275 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 209 selfloop transitions, 72 changer transitions 6/310 dead transitions. [2023-11-28 23:35:06,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 310 transitions, 2381 flow [2023-11-28 23:35:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:35:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-28 23:35:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 654 transitions. [2023-11-28 23:35:06,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661814109742441 [2023-11-28 23:35:06,277 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 654 transitions. [2023-11-28 23:35:06,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 654 transitions. [2023-11-28 23:35:06,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:06,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 654 transitions. [2023-11-28 23:35:06,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 34.421052631578945) internal successors, (654), 19 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:06,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 94.0) internal successors, (1880), 20 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:06,281 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 94.0) internal successors, (1880), 20 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:06,282 INFO L175 Difference]: Start difference. First operand has 153 places, 145 transitions, 958 flow. Second operand 19 states and 654 transitions. [2023-11-28 23:35:06,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 310 transitions, 2381 flow [2023-11-28 23:35:06,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 310 transitions, 2288 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-28 23:35:06,374 INFO L231 Difference]: Finished difference. Result has 160 places, 146 transitions, 1013 flow [2023-11-28 23:35:06,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1013, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2023-11-28 23:35:06,374 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 66 predicate places. [2023-11-28 23:35:06,375 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 1013 flow [2023-11-28 23:35:06,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.875) internal successors, (573), 24 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:06,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:06,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:06,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:35:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 23:35:06,577 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:35:06,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 602158787, now seen corresponding path program 1 times [2023-11-28 23:35:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712412950] [2023-11-28 23:35:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:07,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712412950] [2023-11-28 23:35:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712412950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073311758] [2023-11-28 23:35:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:07,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:07,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:07,096 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:07,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:35:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:07,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-28 23:35:07,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:07,322 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 [2023-11-28 23:35:07,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,329 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 [2023-11-28 23:35:07,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,335 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 [2023-11-28 23:35:07,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,339 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 [2023-11-28 23:35:07,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,345 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 [2023-11-28 23:35:07,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,349 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 [2023-11-28 23:35:07,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,356 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 [2023-11-28 23:35:07,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,365 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 [2023-11-28 23:35:07,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,374 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 [2023-11-28 23:35:07,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,379 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 [2023-11-28 23:35:07,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,384 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 [2023-11-28 23:35:07,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,390 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 [2023-11-28 23:35:07,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,396 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 [2023-11-28 23:35:07,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,400 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 [2023-11-28 23:35:07,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,405 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 [2023-11-28 23:35:07,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,410 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 [2023-11-28 23:35:07,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,417 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 [2023-11-28 23:35:07,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,424 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 [2023-11-28 23:35:07,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,432 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 [2023-11-28 23:35:07,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,439 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 [2023-11-28 23:35:07,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,446 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 [2023-11-28 23:35:07,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,453 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 [2023-11-28 23:35:07,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,463 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 [2023-11-28 23:35:07,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:07,472 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 [2023-11-28 23:35:07,508 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 [2023-11-28 23:35:07,586 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:35:07,586 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 [2023-11-28 23:35:07,596 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 [2023-11-28 23:35:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:07,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:35:07,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:35:07,930 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 [2023-11-28 23:35:07,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:35:07,940 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 [2023-11-28 23:35:07,946 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 [2023-11-28 23:35:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:08,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073311758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:35:08,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:35:08,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-28 23:35:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735893216] [2023-11-28 23:35:08,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:35:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:35:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:35:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=289, Unknown=2, NotChecked=0, Total=342 [2023-11-28 23:35:08,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 94 [2023-11-28 23:35:08,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 1013 flow. Second operand has 19 states, 19 states have (on average 19.05263157894737) internal successors, (362), 19 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:08,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:08,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 94 [2023-11-28 23:35:08,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:08,981 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((~M~0 Int) (v_ArrVal_466 (Array Int Int))) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_466) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (< ~M~0 0) (< c_~N~0 (+ ~M~0 1)))) (forall ((~M~0 Int)) (or (< ~M~0 0) (< 0 (+ 2147483649 (select (select |c_#memory_int#2| c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (< c_~N~0 (+ ~M~0 1)))) (or (< |c_ULTIMATE.start_create_fresh_int_array_~i~3#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_169| Int) (~M~0 Int) (v_ArrVal_466 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_169|) 0)) (< ~M~0 0) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#2| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_169| v_ArrVal_466) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (< c_~N~0 (+ ~M~0 1)))))) is different from false [2023-11-28 23:35:32,036 INFO L124 PetriNetUnfolderBase]: 84434/133664 cut-off events. [2023-11-28 23:35:32,036 INFO L125 PetriNetUnfolderBase]: For 114220/114288 co-relation queries the response was YES. [2023-11-28 23:35:32,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405969 conditions, 133664 events. 84434/133664 cut-off events. For 114220/114288 co-relation queries the response was YES. Maximal size of possible extension queue 4187. Compared 1170071 event pairs, 47055 based on Foata normal form. 0/97127 useless extension candidates. Maximal degree in co-relation 405771. Up to 30506 conditions per place. [2023-11-28 23:35:33,132 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 389 selfloop transitions, 89 changer transitions 6/502 dead transitions. [2023-11-28 23:35:33,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 502 transitions, 3830 flow [2023-11-28 23:35:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-28 23:35:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-28 23:35:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 901 transitions. [2023-11-28 23:35:33,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31950354609929077 [2023-11-28 23:35:33,135 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 901 transitions. [2023-11-28 23:35:33,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 901 transitions. [2023-11-28 23:35:33,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:33,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 901 transitions. [2023-11-28 23:35:33,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 30.033333333333335) internal successors, (901), 30 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:33,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:33,141 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:33,141 INFO L175 Difference]: Start difference. First operand has 160 places, 146 transitions, 1013 flow. Second operand 30 states and 901 transitions. [2023-11-28 23:35:33,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 502 transitions, 3830 flow [2023-11-28 23:35:33,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 502 transitions, 3728 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-28 23:35:33,755 INFO L231 Difference]: Finished difference. Result has 184 places, 185 transitions, 1545 flow [2023-11-28 23:35:33,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1545, PETRI_PLACES=184, PETRI_TRANSITIONS=185} [2023-11-28 23:35:33,755 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 90 predicate places. [2023-11-28 23:35:33,755 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 185 transitions, 1545 flow [2023-11-28 23:35:33,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.05263157894737) internal successors, (362), 19 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:33,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:33,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:33,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:35:33,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:35:33,956 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:35:33,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash 602158788, now seen corresponding path program 1 times [2023-11-28 23:35:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151305001] [2023-11-28 23:35:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:34,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:34,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151305001] [2023-11-28 23:35:34,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151305001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:34,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074983782] [2023-11-28 23:35:34,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:34,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:34,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:34,468 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:34,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:35:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:34,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-28 23:35:34,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:34,660 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 [2023-11-28 23:35:34,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,667 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 [2023-11-28 23:35:34,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,674 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 [2023-11-28 23:35:34,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,682 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 [2023-11-28 23:35:34,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,687 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 [2023-11-28 23:35:34,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,693 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 [2023-11-28 23:35:34,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,705 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 [2023-11-28 23:35:34,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,711 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 [2023-11-28 23:35:34,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,720 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 [2023-11-28 23:35:34,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,724 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 [2023-11-28 23:35:34,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,733 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 [2023-11-28 23:35:34,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,744 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 [2023-11-28 23:35:34,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,754 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 [2023-11-28 23:35:34,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,760 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 [2023-11-28 23:35:34,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,766 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 [2023-11-28 23:35:34,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,771 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 [2023-11-28 23:35:34,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,776 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 [2023-11-28 23:35:34,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,782 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 [2023-11-28 23:35:34,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,789 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 [2023-11-28 23:35:34,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,793 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 [2023-11-28 23:35:34,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,798 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 [2023-11-28 23:35:34,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,803 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 [2023-11-28 23:35:34,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,811 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 [2023-11-28 23:35:34,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:35:34,816 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 [2023-11-28 23:35:34,831 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 [2023-11-28 23:35:34,916 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:35:34,917 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 [2023-11-28 23:35:34,926 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 [2023-11-28 23:35:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:34,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:35:35,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:35:35,246 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 [2023-11-28 23:35:35,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:35:35,257 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 [2023-11-28 23:35:35,263 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 [2023-11-28 23:35:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:35,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074983782] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:35:35,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:35:35,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-28 23:35:35,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537495300] [2023-11-28 23:35:35,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:35:35,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 23:35:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:35,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 23:35:35,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=257, Unknown=2, NotChecked=0, Total=306 [2023-11-28 23:35:35,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 94 [2023-11-28 23:35:35,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 185 transitions, 1545 flow. Second operand has 18 states, 18 states have (on average 19.11111111111111) internal successors, (344), 18 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) [2023-11-28 23:35:35,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:35,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 94 [2023-11-28 23:35:35,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:39,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-28 23:36:03,803 INFO L124 PetriNetUnfolderBase]: 81768/130206 cut-off events. [2023-11-28 23:36:03,803 INFO L125 PetriNetUnfolderBase]: For 164991/165081 co-relation queries the response was YES. [2023-11-28 23:36:04,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412502 conditions, 130206 events. 81768/130206 cut-off events. For 164991/165081 co-relation queries the response was YES. Maximal size of possible extension queue 4119. Compared 1145440 event pairs, 47055 based on Foata normal form. 1414/100656 useless extension candidates. Maximal degree in co-relation 412303. Up to 40596 conditions per place. [2023-11-28 23:36:05,165 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 303 selfloop transitions, 88 changer transitions 6/415 dead transitions. [2023-11-28 23:36:05,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 415 transitions, 3450 flow [2023-11-28 23:36:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-28 23:36:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-28 23:36:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 764 transitions. [2023-11-28 23:36:05,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30102442868400314 [2023-11-28 23:36:05,168 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 764 transitions. [2023-11-28 23:36:05,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 764 transitions. [2023-11-28 23:36:05,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:05,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 764 transitions. [2023-11-28 23:36:05,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 28.296296296296298) internal successors, (764), 27 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:05,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 94.0) internal successors, (2632), 28 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:05,173 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 94.0) internal successors, (2632), 28 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:05,173 INFO L175 Difference]: Start difference. First operand has 184 places, 185 transitions, 1545 flow. Second operand 27 states and 764 transitions. [2023-11-28 23:36:05,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 415 transitions, 3450 flow [2023-11-28 23:36:05,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 415 transitions, 3404 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-28 23:36:05,948 INFO L231 Difference]: Finished difference. Result has 204 places, 183 transitions, 1665 flow [2023-11-28 23:36:05,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1665, PETRI_PLACES=204, PETRI_TRANSITIONS=183} [2023-11-28 23:36:05,948 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 110 predicate places. [2023-11-28 23:36:05,949 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 183 transitions, 1665 flow [2023-11-28 23:36:05,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.11111111111111) internal successors, (344), 18 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) [2023-11-28 23:36:05,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:36:05,949 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:05,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:36:06,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:36:06,150 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:36:06,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:06,150 INFO L85 PathProgramCache]: Analyzing trace with hash 679959205, now seen corresponding path program 1 times [2023-11-28 23:36:06,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:06,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684313405] [2023-11-28 23:36:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:06,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:36:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684313405] [2023-11-28 23:36:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684313405] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055602783] [2023-11-28 23:36:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:06,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:06,316 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:06,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:36:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:06,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-28 23:36:06,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:36:06,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:36:06,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055602783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:06,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:36:06,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-11-28 23:36:06,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132009551] [2023-11-28 23:36:06,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:06,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 23:36:06,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:06,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 23:36:06,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:36:06,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 94 [2023-11-28 23:36:06,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 183 transitions, 1665 flow. Second operand has 20 states, 20 states have (on average 20.7) internal successors, (414), 20 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:06,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:06,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 94 [2023-11-28 23:36:06,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:36:28,338 INFO L124 PetriNetUnfolderBase]: 71787/112283 cut-off events. [2023-11-28 23:36:28,338 INFO L125 PetriNetUnfolderBase]: For 200477/203210 co-relation queries the response was YES. [2023-11-28 23:36:29,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365549 conditions, 112283 events. 71787/112283 cut-off events. For 200477/203210 co-relation queries the response was YES. Maximal size of possible extension queue 4873. Compared 1027628 event pairs, 61186 based on Foata normal form. 294/88195 useless extension candidates. Maximal degree in co-relation 365342. Up to 92918 conditions per place. [2023-11-28 23:36:29,613 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 207 selfloop transitions, 70 changer transitions 12/308 dead transitions. [2023-11-28 23:36:29,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 308 transitions, 3028 flow [2023-11-28 23:36:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:36:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 23:36:29,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 419 transitions. [2023-11-28 23:36:29,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3183890577507599 [2023-11-28 23:36:29,615 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 419 transitions. [2023-11-28 23:36:29,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 419 transitions. [2023-11-28 23:36:29,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:29,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 419 transitions. [2023-11-28 23:36:29,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 29.928571428571427) internal successors, (419), 14 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:29,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 94.0) internal successors, (1410), 15 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:29,618 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 94.0) internal successors, (1410), 15 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:29,618 INFO L175 Difference]: Start difference. First operand has 204 places, 183 transitions, 1665 flow. Second operand 14 states and 419 transitions. [2023-11-28 23:36:29,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 308 transitions, 3028 flow [2023-11-28 23:36:31,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 308 transitions, 2868 flow, removed 2 selfloop flow, removed 21 redundant places. [2023-11-28 23:36:31,419 INFO L231 Difference]: Finished difference. Result has 200 places, 187 transitions, 1734 flow [2023-11-28 23:36:31,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1734, PETRI_PLACES=200, PETRI_TRANSITIONS=187} [2023-11-28 23:36:31,420 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 106 predicate places. [2023-11-28 23:36:31,420 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 187 transitions, 1734 flow [2023-11-28 23:36:31,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.7) internal successors, (414), 20 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:31,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:36:31,420 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-28 23:36:31,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:36:31,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:36:31,621 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:36:31,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash 98855316, now seen corresponding path program 1 times [2023-11-28 23:36:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836826695] [2023-11-28 23:36:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 23:36:31,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:31,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836826695] [2023-11-28 23:36:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836826695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:36:31,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:36:31,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:36:31,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419521142] [2023-11-28 23:36:31,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:36:31,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:36:31,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:31,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:36:31,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:36:31,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 94 [2023-11-28 23:36:31,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 187 transitions, 1734 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:31,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:31,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 94 [2023-11-28 23:36:31,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:36:47,573 INFO L124 PetriNetUnfolderBase]: 51118/82933 cut-off events. [2023-11-28 23:36:47,574 INFO L125 PetriNetUnfolderBase]: For 173071/175938 co-relation queries the response was YES. [2023-11-28 23:36:48,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279819 conditions, 82933 events. 51118/82933 cut-off events. For 173071/175938 co-relation queries the response was YES. Maximal size of possible extension queue 4127. Compared 781378 event pairs, 45429 based on Foata normal form. 274/63512 useless extension candidates. Maximal degree in co-relation 279631. Up to 71734 conditions per place. [2023-11-28 23:36:48,431 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 139 selfloop transitions, 10 changer transitions 1/176 dead transitions. [2023-11-28 23:36:48,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 176 transitions, 1864 flow [2023-11-28 23:36:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:36:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:36:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2023-11-28 23:36:48,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42819148936170215 [2023-11-28 23:36:48,433 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 161 transitions. [2023-11-28 23:36:48,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 161 transitions. [2023-11-28 23:36:48,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:48,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 161 transitions. [2023-11-28 23:36:48,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:48,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:48,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:48,435 INFO L175 Difference]: Start difference. First operand has 200 places, 187 transitions, 1734 flow. Second operand 4 states and 161 transitions. [2023-11-28 23:36:48,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 176 transitions, 1864 flow [2023-11-28 23:36:48,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 176 transitions, 1715 flow, removed 5 selfloop flow, removed 16 redundant places. [2023-11-28 23:36:48,833 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 1430 flow [2023-11-28 23:36:48,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1430, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2023-11-28 23:36:48,834 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 88 predicate places. [2023-11-28 23:36:48,834 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 1430 flow [2023-11-28 23:36:48,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:48,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:36:48,834 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:48,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 23:36:48,835 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:36:48,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:48,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1041944649, now seen corresponding path program 2 times [2023-11-28 23:36:48,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:48,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66170762] [2023-11-28 23:36:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:48,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:36:49,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66170762] [2023-11-28 23:36:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66170762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178237632] [2023-11-28 23:36:49,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:36:49,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:49,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:49,018 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:49,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:36:49,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:36:49,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:36:49,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:36:49,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:36:49,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:36:49,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178237632] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:49,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:36:49,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-11-28 23:36:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032459023] [2023-11-28 23:36:49,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:49,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 23:36:49,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 23:36:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:36:49,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 94 [2023-11-28 23:36:49,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 1430 flow. Second operand has 20 states, 20 states have (on average 24.55) internal successors, (491), 20 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:36:49,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:49,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 94 [2023-11-28 23:36:49,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:37:04,788 INFO L124 PetriNetUnfolderBase]: 48795/79347 cut-off events. [2023-11-28 23:37:04,788 INFO L125 PetriNetUnfolderBase]: For 153417/156565 co-relation queries the response was YES. [2023-11-28 23:37:05,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263896 conditions, 79347 events. 48795/79347 cut-off events. For 153417/156565 co-relation queries the response was YES. Maximal size of possible extension queue 4091. Compared 749887 event pairs, 43321 based on Foata normal form. 152/60222 useless extension candidates. Maximal degree in co-relation 263720. Up to 66246 conditions per place. [2023-11-28 23:37:05,599 INFO L140 encePairwiseOnDemand]: 87/94 looper letters, 98 selfloop transitions, 67 changer transitions 1/191 dead transitions. [2023-11-28 23:37:05,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 191 transitions, 1798 flow [2023-11-28 23:37:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:37:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 23:37:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 363 transitions. [2023-11-28 23:37:05,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32180851063829785 [2023-11-28 23:37:05,601 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 363 transitions. [2023-11-28 23:37:05,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 363 transitions. [2023-11-28 23:37:05,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:37:05,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 363 transitions. [2023-11-28 23:37:05,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 30.25) internal successors, (363), 12 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:05,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:05,604 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:05,604 INFO L175 Difference]: Start difference. First operand has 182 places, 175 transitions, 1430 flow. Second operand 12 states and 363 transitions. [2023-11-28 23:37:05,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 191 transitions, 1798 flow [2023-11-28 23:37:05,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 191 transitions, 1778 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:37:05,894 INFO L231 Difference]: Finished difference. Result has 184 places, 162 transitions, 1420 flow [2023-11-28 23:37:05,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1420, PETRI_PLACES=184, PETRI_TRANSITIONS=162} [2023-11-28 23:37:05,894 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 90 predicate places. [2023-11-28 23:37:05,895 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 162 transitions, 1420 flow [2023-11-28 23:37:05,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 24.55) internal successors, (491), 20 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:05,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:37:05,895 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] [2023-11-28 23:37:05,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:37:06,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:37:06,096 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:37:06,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:37:06,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1164257916, now seen corresponding path program 1 times [2023-11-28 23:37:06,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:37:06,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608123908] [2023-11-28 23:37:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:06,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:37:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:37:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:37:06,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:37:06,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608123908] [2023-11-28 23:37:06,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608123908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:37:06,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:37:06,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:37:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145816861] [2023-11-28 23:37:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:37:06,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:37:06,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:37:06,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:37:06,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:37:06,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 94 [2023-11-28 23:37:06,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 162 transitions, 1420 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:06,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:37:06,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 94 [2023-11-28 23:37:06,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:37:22,567 INFO L124 PetriNetUnfolderBase]: 56747/88532 cut-off events. [2023-11-28 23:37:22,567 INFO L125 PetriNetUnfolderBase]: For 163430/167096 co-relation queries the response was YES. [2023-11-28 23:37:23,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294278 conditions, 88532 events. 56747/88532 cut-off events. For 163430/167096 co-relation queries the response was YES. Maximal size of possible extension queue 4335. Compared 800502 event pairs, 10796 based on Foata normal form. 1926/70258 useless extension candidates. Maximal degree in co-relation 294090. Up to 52984 conditions per place. [2023-11-28 23:37:23,469 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 180 selfloop transitions, 26 changer transitions 0/229 dead transitions. [2023-11-28 23:37:23,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 229 transitions, 2208 flow [2023-11-28 23:37:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:37:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 23:37:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2023-11-28 23:37:23,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2023-11-28 23:37:23,470 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 220 transitions. [2023-11-28 23:37:23,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 220 transitions. [2023-11-28 23:37:23,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:37:23,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 220 transitions. [2023-11-28 23:37:23,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:23,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:23,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:23,472 INFO L175 Difference]: Start difference. First operand has 184 places, 162 transitions, 1420 flow. Second operand 5 states and 220 transitions. [2023-11-28 23:37:23,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 229 transitions, 2208 flow [2023-11-28 23:37:23,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 229 transitions, 2122 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-28 23:37:23,653 INFO L231 Difference]: Finished difference. Result has 181 places, 161 transitions, 1384 flow [2023-11-28 23:37:23,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1384, PETRI_PLACES=181, PETRI_TRANSITIONS=161} [2023-11-28 23:37:23,654 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 87 predicate places. [2023-11-28 23:37:23,654 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 161 transitions, 1384 flow [2023-11-28 23:37:23,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:23,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:37:23,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:37:23,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-28 23:37:23,655 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:37:23,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:37:23,655 INFO L85 PathProgramCache]: Analyzing trace with hash -519670791, now seen corresponding path program 1 times [2023-11-28 23:37:23,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:37:23,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347994808] [2023-11-28 23:37:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:37:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:37:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:37:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:37:24,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347994808] [2023-11-28 23:37:24,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347994808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:37:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873991148] [2023-11-28 23:37:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:24,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:37:24,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:37:24,102 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:37:24,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:37:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:37:24,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-28 23:37:24,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:37:24,284 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 [2023-11-28 23:37:24,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,293 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 [2023-11-28 23:37:24,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,299 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 [2023-11-28 23:37:24,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,303 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 [2023-11-28 23:37:24,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,310 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 [2023-11-28 23:37:24,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,314 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 [2023-11-28 23:37:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,323 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 [2023-11-28 23:37:24,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,328 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 [2023-11-28 23:37:24,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,334 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 [2023-11-28 23:37:24,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,338 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 [2023-11-28 23:37:24,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,342 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 [2023-11-28 23:37:24,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,345 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 [2023-11-28 23:37:24,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,351 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 [2023-11-28 23:37:24,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,354 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 [2023-11-28 23:37:24,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,361 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 [2023-11-28 23:37:24,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,366 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 [2023-11-28 23:37:24,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,370 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 [2023-11-28 23:37:24,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,373 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 [2023-11-28 23:37:24,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,384 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 [2023-11-28 23:37:24,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,390 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 [2023-11-28 23:37:24,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,399 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 [2023-11-28 23:37:24,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,410 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 [2023-11-28 23:37:24,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,419 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 [2023-11-28 23:37:24,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:37:24,425 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 [2023-11-28 23:37:24,447 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 [2023-11-28 23:37:24,499 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 [2023-11-28 23:37:24,540 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:37:24,540 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 [2023-11-28 23:37:24,573 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 [2023-11-28 23:37:24,667 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 [2023-11-28 23:37:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:37:24,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:37:24,791 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_682 (Array Int Int))) (< (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_682) c_~A~0.base) c_~A~0.offset) 2147483648)) is different from false [2023-11-28 23:37:24,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:37:24,937 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 36 [2023-11-28 23:37:24,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:37:24,947 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 [2023-11-28 23:37:24,951 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 [2023-11-28 23:37:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-11-28 23:37:24,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873991148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:37:24,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:37:24,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 22 [2023-11-28 23:37:24,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359561760] [2023-11-28 23:37:24,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:37:24,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 23:37:24,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:37:24,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 23:37:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=417, Unknown=3, NotChecked=42, Total=552 [2023-11-28 23:37:25,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 94 [2023-11-28 23:37:25,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 161 transitions, 1384 flow. Second operand has 24 states, 24 states have (on average 21.375) internal successors, (513), 24 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:25,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:37:25,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 94 [2023-11-28 23:37:25,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:37:48,678 INFO L124 PetriNetUnfolderBase]: 77257/123067 cut-off events. [2023-11-28 23:37:48,678 INFO L125 PetriNetUnfolderBase]: For 291203/293365 co-relation queries the response was YES. [2023-11-28 23:37:49,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426859 conditions, 123067 events. 77257/123067 cut-off events. For 291203/293365 co-relation queries the response was YES. Maximal size of possible extension queue 5900. Compared 1174734 event pairs, 35318 based on Foata normal form. 150/92658 useless extension candidates. Maximal degree in co-relation 426665. Up to 59899 conditions per place. [2023-11-28 23:37:50,321 INFO L140 encePairwiseOnDemand]: 81/94 looper letters, 200 selfloop transitions, 46 changer transitions 0/266 dead transitions. [2023-11-28 23:37:50,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 266 transitions, 2600 flow [2023-11-28 23:37:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:37:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-28 23:37:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 477 transitions. [2023-11-28 23:37:50,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28191489361702127 [2023-11-28 23:37:50,324 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 477 transitions. [2023-11-28 23:37:50,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 477 transitions. [2023-11-28 23:37:50,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:37:50,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 477 transitions. [2023-11-28 23:37:50,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 26.5) internal successors, (477), 18 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:50,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 94.0) internal successors, (1786), 19 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:50,328 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 94.0) internal successors, (1786), 19 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:50,328 INFO L175 Difference]: Start difference. First operand has 181 places, 161 transitions, 1384 flow. Second operand 18 states and 477 transitions. [2023-11-28 23:37:50,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 266 transitions, 2600 flow [2023-11-28 23:37:50,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 266 transitions, 2506 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 23:37:50,708 INFO L231 Difference]: Finished difference. Result has 196 places, 164 transitions, 1464 flow [2023-11-28 23:37:50,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1464, PETRI_PLACES=196, PETRI_TRANSITIONS=164} [2023-11-28 23:37:50,709 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 102 predicate places. [2023-11-28 23:37:50,709 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 164 transitions, 1464 flow [2023-11-28 23:37:50,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 21.375) internal successors, (513), 24 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:50,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:37:50,710 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, 1] [2023-11-28 23:37:50,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:37:50,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:37:50,911 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:37:50,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:37:50,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1732255507, now seen corresponding path program 1 times [2023-11-28 23:37:50,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:37:50,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861247412] [2023-11-28 23:37:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:50,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:37:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:37:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:37:51,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:37:51,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861247412] [2023-11-28 23:37:51,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861247412] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:37:51,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6995498] [2023-11-28 23:37:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:51,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:37:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:37:51,060 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:37:51,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:37:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:37:51,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:37:51,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:37:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:37:51,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:37:51,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6995498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:37:51,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:37:51,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2023-11-28 23:37:51,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189444569] [2023-11-28 23:37:51,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:37:51,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:37:51,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:37:51,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:37:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:37:51,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 94 [2023-11-28 23:37:51,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 164 transitions, 1464 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:37:51,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:37:51,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 94 [2023-11-28 23:37:51,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:38:14,070 INFO L124 PetriNetUnfolderBase]: 79305/122233 cut-off events. [2023-11-28 23:38:14,071 INFO L125 PetriNetUnfolderBase]: For 239397/244669 co-relation queries the response was YES. [2023-11-28 23:38:14,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428637 conditions, 122233 events. 79305/122233 cut-off events. For 239397/244669 co-relation queries the response was YES. Maximal size of possible extension queue 5967. Compared 1113447 event pairs, 16376 based on Foata normal form. 3036/101383 useless extension candidates. Maximal degree in co-relation 428447. Up to 76996 conditions per place. [2023-11-28 23:38:15,695 INFO L140 encePairwiseOnDemand]: 86/94 looper letters, 189 selfloop transitions, 28 changer transitions 0/239 dead transitions. [2023-11-28 23:38:15,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 239 transitions, 2362 flow [2023-11-28 23:38:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:38:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:38:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 240 transitions. [2023-11-28 23:38:15,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2023-11-28 23:38:15,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 240 transitions. [2023-11-28 23:38:15,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 240 transitions. [2023-11-28 23:38:15,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:38:15,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 240 transitions. [2023-11-28 23:38:15,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:15,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:15,698 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:15,698 INFO L175 Difference]: Start difference. First operand has 196 places, 164 transitions, 1464 flow. Second operand 6 states and 240 transitions. [2023-11-28 23:38:15,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 239 transitions, 2362 flow [2023-11-28 23:38:16,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 239 transitions, 2273 flow, removed 2 selfloop flow, removed 15 redundant places. [2023-11-28 23:38:16,312 INFO L231 Difference]: Finished difference. Result has 187 places, 165 transitions, 1478 flow [2023-11-28 23:38:16,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1478, PETRI_PLACES=187, PETRI_TRANSITIONS=165} [2023-11-28 23:38:16,313 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 93 predicate places. [2023-11-28 23:38:16,313 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 165 transitions, 1478 flow [2023-11-28 23:38:16,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:16,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:38:16,313 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:38:16,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 23:38:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:16,514 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:38:16,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:38:16,514 INFO L85 PathProgramCache]: Analyzing trace with hash -519670792, now seen corresponding path program 1 times [2023-11-28 23:38:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:38:16,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89116229] [2023-11-28 23:38:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:38:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:38:16,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:38:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89116229] [2023-11-28 23:38:16,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89116229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:38:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153623797] [2023-11-28 23:38:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:16,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:16,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:38:16,920 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:38:16,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:38:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:17,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-28 23:38:17,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:38:17,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-28 23:38:17,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,125 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 [2023-11-28 23:38:17,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,136 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 [2023-11-28 23:38:17,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,143 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 [2023-11-28 23:38:17,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,152 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 [2023-11-28 23:38:17,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,161 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 [2023-11-28 23:38:17,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,173 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 [2023-11-28 23:38:17,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,180 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 [2023-11-28 23:38:17,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,188 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 [2023-11-28 23:38:17,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,193 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 [2023-11-28 23:38:17,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,198 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 [2023-11-28 23:38:17,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,205 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 [2023-11-28 23:38:17,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,214 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 [2023-11-28 23:38:17,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,224 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 [2023-11-28 23:38:17,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,229 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 [2023-11-28 23:38:17,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,236 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 [2023-11-28 23:38:17,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,242 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 [2023-11-28 23:38:17,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,248 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 [2023-11-28 23:38:17,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,257 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 [2023-11-28 23:38:17,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,262 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 [2023-11-28 23:38:17,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,273 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 [2023-11-28 23:38:17,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,280 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 [2023-11-28 23:38:17,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,286 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 [2023-11-28 23:38:17,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:17,292 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 [2023-11-28 23:38:17,305 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 [2023-11-28 23:38:17,362 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 [2023-11-28 23:38:17,400 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:38:17,401 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 [2023-11-28 23:38:17,445 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 [2023-11-28 23:38:17,532 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 [2023-11-28 23:38:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:17,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:38:17,680 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_775 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_775) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-11-28 23:38:17,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:38:17,852 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 [2023-11-28 23:38:17,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:38:17,862 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 [2023-11-28 23:38:17,868 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 [2023-11-28 23:38:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-11-28 23:38:17,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153623797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:38:17,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:38:17,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 19 [2023-11-28 23:38:17,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608100947] [2023-11-28 23:38:17,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:38:17,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-28 23:38:17,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:38:17,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-28 23:38:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=308, Unknown=2, NotChecked=36, Total=420 [2023-11-28 23:38:17,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 94 [2023-11-28 23:38:17,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 165 transitions, 1478 flow. Second operand has 21 states, 21 states have (on average 21.476190476190474) internal successors, (451), 21 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:17,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:38:17,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 94 [2023-11-28 23:38:17,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:38:42,238 INFO L124 PetriNetUnfolderBase]: 77244/121530 cut-off events. [2023-11-28 23:38:42,239 INFO L125 PetriNetUnfolderBase]: For 364720/369766 co-relation queries the response was YES. [2023-11-28 23:38:43,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448860 conditions, 121530 events. 77244/121530 cut-off events. For 364720/369766 co-relation queries the response was YES. Maximal size of possible extension queue 5748. Compared 1133699 event pairs, 35432 based on Foata normal form. 3102/100716 useless extension candidates. Maximal degree in co-relation 448664. Up to 63155 conditions per place. [2023-11-28 23:38:43,625 INFO L140 encePairwiseOnDemand]: 81/94 looper letters, 202 selfloop transitions, 46 changer transitions 0/268 dead transitions. [2023-11-28 23:38:43,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 268 transitions, 2740 flow [2023-11-28 23:38:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:38:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-28 23:38:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 476 transitions. [2023-11-28 23:38:43,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28132387706855794 [2023-11-28 23:38:43,627 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 476 transitions. [2023-11-28 23:38:43,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 476 transitions. [2023-11-28 23:38:43,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:38:43,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 476 transitions. [2023-11-28 23:38:43,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 26.444444444444443) internal successors, (476), 18 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:43,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 94.0) internal successors, (1786), 19 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:43,632 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 94.0) internal successors, (1786), 19 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:43,632 INFO L175 Difference]: Start difference. First operand has 187 places, 165 transitions, 1478 flow. Second operand 18 states and 476 transitions. [2023-11-28 23:38:43,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 268 transitions, 2740 flow [2023-11-28 23:38:44,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 268 transitions, 2692 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 23:38:44,353 INFO L231 Difference]: Finished difference. Result has 200 places, 164 transitions, 1526 flow [2023-11-28 23:38:44,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1526, PETRI_PLACES=200, PETRI_TRANSITIONS=164} [2023-11-28 23:38:44,353 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 106 predicate places. [2023-11-28 23:38:44,353 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 164 transitions, 1526 flow [2023-11-28 23:38:44,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 21.476190476190474) internal successors, (451), 21 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:44,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:38:44,354 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:38:44,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 23:38:44,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-28 23:38:44,554 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:38:44,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:38:44,555 INFO L85 PathProgramCache]: Analyzing trace with hash -519670795, now seen corresponding path program 2 times [2023-11-28 23:38:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:38:44,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617772812] [2023-11-28 23:38:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:44,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:38:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:38:44,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:38:44,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617772812] [2023-11-28 23:38:44,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617772812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:38:44,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207887095] [2023-11-28 23:38:44,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:38:44,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:44,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:38:44,934 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:38:44,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:38:45,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:38:45,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:38:45,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-28 23:38:45,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:38:45,223 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 [2023-11-28 23:38:45,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:38:45,279 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 [2023-11-28 23:38:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:38:45,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:38:45,499 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 [2023-11-28 23:38:45,502 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 [2023-11-28 23:38:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:38:45,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207887095] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:38:45,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:38:45,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 23 [2023-11-28 23:38:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416152942] [2023-11-28 23:38:45,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:38:45,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 23:38:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:38:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 23:38:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:38:45,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 94 [2023-11-28 23:38:45,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 164 transitions, 1526 flow. Second operand has 24 states, 24 states have (on average 24.583333333333332) internal successors, (590), 24 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:38:45,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:38:45,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 94 [2023-11-28 23:38:45,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:39:05,945 INFO L124 PetriNetUnfolderBase]: 59086/101030 cut-off events. [2023-11-28 23:39:05,945 INFO L125 PetriNetUnfolderBase]: For 276981/281563 co-relation queries the response was YES. [2023-11-28 23:39:06,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360968 conditions, 101030 events. 59086/101030 cut-off events. For 276981/281563 co-relation queries the response was YES. Maximal size of possible extension queue 5100. Compared 1021647 event pairs, 15001 based on Foata normal form. 1314/83281 useless extension candidates. Maximal degree in co-relation 360773. Up to 31452 conditions per place. [2023-11-28 23:39:07,023 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 203 selfloop transitions, 81 changer transitions 2/310 dead transitions. [2023-11-28 23:39:07,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 310 transitions, 3165 flow [2023-11-28 23:39:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:39:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-28 23:39:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 531 transitions. [2023-11-28 23:39:07,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35305851063829785 [2023-11-28 23:39:07,024 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 531 transitions. [2023-11-28 23:39:07,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 531 transitions. [2023-11-28 23:39:07,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:39:07,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 531 transitions. [2023-11-28 23:39:07,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 33.1875) internal successors, (531), 16 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:07,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 94.0) internal successors, (1598), 17 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:07,027 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 94.0) internal successors, (1598), 17 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:07,027 INFO L175 Difference]: Start difference. First operand has 200 places, 164 transitions, 1526 flow. Second operand 16 states and 531 transitions. [2023-11-28 23:39:07,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 310 transitions, 3165 flow [2023-11-28 23:39:07,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 310 transitions, 3092 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-28 23:39:07,572 INFO L231 Difference]: Finished difference. Result has 203 places, 170 transitions, 1688 flow [2023-11-28 23:39:07,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1688, PETRI_PLACES=203, PETRI_TRANSITIONS=170} [2023-11-28 23:39:07,572 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 109 predicate places. [2023-11-28 23:39:07,573 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 170 transitions, 1688 flow [2023-11-28 23:39:07,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 24.583333333333332) internal successors, (590), 24 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:07,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:39:07,573 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:39:07,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 23:39:07,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-28 23:39:07,774 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:39:07,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash -519670794, now seen corresponding path program 1 times [2023-11-28 23:39:07,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:07,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318236046] [2023-11-28 23:39:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:39:08,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:08,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318236046] [2023-11-28 23:39:08,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318236046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:39:08,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303836686] [2023-11-28 23:39:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:08,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:08,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:08,077 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:08,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 23:39:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:08,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:39:08,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:08,269 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 [2023-11-28 23:39:08,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:39:08,314 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 [2023-11-28 23:39:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:39:08,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:39:08,479 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 [2023-11-28 23:39:08,482 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 98 treesize of output 94 [2023-11-28 23:39:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:39:08,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303836686] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:39:08,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:39:08,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-28 23:39:08,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323550961] [2023-11-28 23:39:08,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:39:08,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:39:08,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:08,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:39:08,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:39:08,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 94 [2023-11-28 23:39:08,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 170 transitions, 1688 flow. Second operand has 16 states, 16 states have (on average 24.75) internal successors, (396), 16 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:08,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:39:08,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 94 [2023-11-28 23:39:08,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:39:27,903 INFO L124 PetriNetUnfolderBase]: 55653/96187 cut-off events. [2023-11-28 23:39:27,903 INFO L125 PetriNetUnfolderBase]: For 316039/320489 co-relation queries the response was YES. [2023-11-28 23:39:28,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375508 conditions, 96187 events. 55653/96187 cut-off events. For 316039/320489 co-relation queries the response was YES. Maximal size of possible extension queue 4837. Compared 972834 event pairs, 14370 based on Foata normal form. 1194/81735 useless extension candidates. Maximal degree in co-relation 375296. Up to 31532 conditions per place. [2023-11-28 23:39:28,943 INFO L140 encePairwiseOnDemand]: 77/94 looper letters, 155 selfloop transitions, 81 changer transitions 0/260 dead transitions. [2023-11-28 23:39:28,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 260 transitions, 2886 flow [2023-11-28 23:39:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:39:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:39:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 315 transitions. [2023-11-28 23:39:28,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723404255319149 [2023-11-28 23:39:28,944 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 315 transitions. [2023-11-28 23:39:28,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 315 transitions. [2023-11-28 23:39:28,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:39:28,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 315 transitions. [2023-11-28 23:39:28,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:28,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:28,946 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:28,946 INFO L175 Difference]: Start difference. First operand has 203 places, 170 transitions, 1688 flow. Second operand 9 states and 315 transitions. [2023-11-28 23:39:28,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 260 transitions, 2886 flow [2023-11-28 23:39:29,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 260 transitions, 2714 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-11-28 23:39:29,436 INFO L231 Difference]: Finished difference. Result has 198 places, 169 transitions, 1674 flow [2023-11-28 23:39:29,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1674, PETRI_PLACES=198, PETRI_TRANSITIONS=169} [2023-11-28 23:39:29,437 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 104 predicate places. [2023-11-28 23:39:29,437 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 169 transitions, 1674 flow [2023-11-28 23:39:29,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.75) internal successors, (396), 16 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:29,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:39:29,437 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:39:29,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 23:39:29,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-28 23:39:29,637 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-11-28 23:39:29,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:29,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1229338805, now seen corresponding path program 2 times [2023-11-28 23:39:29,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:29,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918906532] [2023-11-28 23:39:29,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:29,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:39:30,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918906532] [2023-11-28 23:39:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918906532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:39:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505211104] [2023-11-28 23:39:30,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:39:30,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:30,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:30,225 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:30,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b371865-1d23-4c0c-a570-90ef2a660fb3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 23:39:30,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:39:30,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:39:30,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-28 23:39:30,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:30,589 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 [2023-11-28 23:39:30,666 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 [2023-11-28 23:39:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:39:30,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:39:31,441 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 [2023-11-28 23:39:31,445 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 [2023-11-28 23:39:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:39:31,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505211104] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:39:31,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:39:31,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2023-11-28 23:39:31,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312728369] [2023-11-28 23:39:31,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:39:31,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-28 23:39:31,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:31,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-28 23:39:31,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2023-11-28 23:39:32,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 94 [2023-11-28 23:39:32,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 169 transitions, 1674 flow. Second operand has 38 states, 38 states have (on average 23.5) internal successors, (893), 38 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:39:32,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:39:32,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 94 [2023-11-28 23:39:32,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand