./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:56:09,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:56:09,512 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:56:09,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:56:09,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:56:09,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:56:09,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:56:09,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:56:09,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:56:09,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:56:09,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:56:09,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:56:09,584 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:56:09,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:56:09,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:56:09,587 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:56:09,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:56:09,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:56:09,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:56:09,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:56:09,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:56:09,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:56:09,590 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:56:09,590 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:56:09,591 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:56:09,591 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:56:09,592 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:56:09,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:56:09,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:56:09,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:56:09,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:09,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:56:09,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:56:09,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:56:09,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:56:09,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:56:09,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:56:09,597 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:56:09,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:56:09,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:56:09,597 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:56:09,598 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_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2023-11-06 22:56:09,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:56:09,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:56:09,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:56:09,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:56:09,881 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:56:09,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2023-11-06 22:56:13,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:56:13,275 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:56:13,275 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2023-11-06 22:56:13,285 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/data/ea29e98c3/bc43984d754a4a65b2f64b43c86f95c1/FLAG5d963f8ee [2023-11-06 22:56:13,301 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/data/ea29e98c3/bc43984d754a4a65b2f64b43c86f95c1 [2023-11-06 22:56:13,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:56:13,305 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:56:13,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:13,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:56:13,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:56:13,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ccfac09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13, skipping insertion in model container [2023-11-06 22:56:13,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,354 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:56:13,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:13,634 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:56:13,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:13,674 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:56:13,675 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:56:13,683 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:56:13,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13 WrapperNode [2023-11-06 22:56:13,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:13,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:13,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:56:13,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:56:13,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,743 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 293 [2023-11-06 22:56:13,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:13,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:56:13,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:56:13,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:56:13,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,786 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:56:13,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:56:13,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:56:13,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:56:13,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (1/1) ... [2023-11-06 22:56:13,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:13,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:56:13,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:56:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:56:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:56:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:56:13,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:56:13,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:56:13,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:56:13,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:56:13,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:56:13,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:56:13,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:56:13,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:56:13,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:56:13,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:56:13,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:56:13,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:56:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:56:13,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:56:13,911 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:56:14,119 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:56:14,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:56:14,796 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:56:15,142 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:56:15,142 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:56:15,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:15 BoogieIcfgContainer [2023-11-06 22:56:15,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:56:15,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:56:15,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:56:15,155 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:56:15,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:56:13" (1/3) ... [2023-11-06 22:56:15,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e533cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:15, skipping insertion in model container [2023-11-06 22:56:15,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:13" (2/3) ... [2023-11-06 22:56:15,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e533cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:15, skipping insertion in model container [2023-11-06 22:56:15,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:15" (3/3) ... [2023-11-06 22:56:15,161 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-11-06 22:56:15,170 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:56:15,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:56:15,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-06 22:56:15,179 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:56:15,346 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:56:15,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 399 transitions, 819 flow [2023-11-06 22:56:15,564 INFO L124 PetriNetUnfolderBase]: 31/396 cut-off events. [2023-11-06 22:56:15,565 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:56:15,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 396 events. 31/396 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 436 event pairs, 0 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 299. Up to 2 conditions per place. [2023-11-06 22:56:15,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 399 transitions, 819 flow [2023-11-06 22:56:15,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 367 transitions, 752 flow [2023-11-06 22:56:15,589 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:56:15,599 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 367 transitions, 752 flow [2023-11-06 22:56:15,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 367 transitions, 752 flow [2023-11-06 22:56:15,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 367 transitions, 752 flow [2023-11-06 22:56:15,676 INFO L124 PetriNetUnfolderBase]: 30/367 cut-off events. [2023-11-06 22:56:15,677 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:56:15,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 367 events. 30/367 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 433 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 299. Up to 2 conditions per place. [2023-11-06 22:56:15,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 5064 [2023-11-06 22:56:40,595 INFO L134 LiptonReduction]: Checked pairs total: 9853 [2023-11-06 22:56:40,596 INFO L136 LiptonReduction]: Total number of compositions: 437 [2023-11-06 22:56:40,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:56:40,619 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=LoopsAndPotentialCycles, 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;@5cce445d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:56:40,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-06 22:56:40,623 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:56:40,623 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:56:40,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:56:40,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:40,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:56:40,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:56:40,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 52424, now seen corresponding path program 1 times [2023-11-06 22:56:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:40,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518839026] [2023-11-06 22:56:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:40,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518839026] [2023-11-06 22:56:40,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518839026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:40,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:40,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:56:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757702571] [2023-11-06 22:56:40,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:40,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:56:40,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:56:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:56:41,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 836 [2023-11-06 22:56:41,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:41,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:41,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 836 [2023-11-06 22:56:41,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:56:42,269 INFO L124 PetriNetUnfolderBase]: 4546/5887 cut-off events. [2023-11-06 22:56:42,270 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2023-11-06 22:56:42,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11916 conditions, 5887 events. 4546/5887 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26646 event pairs, 2387 based on Foata normal form. 0/2378 useless extension candidates. Maximal degree in co-relation 10798. Up to 5777 conditions per place. [2023-11-06 22:56:42,338 INFO L140 encePairwiseOnDemand]: 811/836 looper letters, 54 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2023-11-06 22:56:42,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 286 flow [2023-11-06 22:56:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:56:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:56:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1128 transitions. [2023-11-06 22:56:42,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2023-11-06 22:56:42,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1128 transitions. [2023-11-06 22:56:42,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1128 transitions. [2023-11-06 22:56:42,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:56:42,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1128 transitions. [2023-11-06 22:56:42,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.0) internal successors, (1128), 3 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) [2023-11-06 22:56:42,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:42,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:42,407 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 152 flow. Second operand 3 states and 1128 transitions. [2023-11-06 22:56:42,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 286 flow [2023-11-06 22:56:42,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 274 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:56:42,431 INFO L231 Difference]: Finished difference. Result has 59 places, 69 transitions, 220 flow [2023-11-06 22:56:42,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=59, PETRI_TRANSITIONS=69} [2023-11-06 22:56:42,440 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2023-11-06 22:56:42,440 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 69 transitions, 220 flow [2023-11-06 22:56:42,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 349.6666666666667) internal successors, (1049), 3 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:42,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:42,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:56:42,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:56:42,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:56:42,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:42,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1626760, now seen corresponding path program 1 times [2023-11-06 22:56:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:42,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989181900] [2023-11-06 22:56:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:42,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:42,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:42,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989181900] [2023-11-06 22:56:42,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989181900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:42,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889412623] [2023-11-06 22:56:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:42,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:42,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:42,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:42,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:56:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:42,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:56:42,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:42,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:42,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889412623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:42,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:42,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:56:42,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968073125] [2023-11-06 22:56:42,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:42,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:42,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:42,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 836 [2023-11-06 22:56:42,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 69 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 350.14285714285717) internal successors, (2451), 7 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:42,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:42,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 836 [2023-11-06 22:56:42,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:56:44,159 INFO L124 PetriNetUnfolderBase]: 4576/5926 cut-off events. [2023-11-06 22:56:44,159 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-06 22:56:44,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11924 conditions, 5926 events. 4576/5926 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26820 event pairs, 2387 based on Foata normal form. 0/2397 useless extension candidates. Maximal degree in co-relation 11705. Up to 5789 conditions per place. [2023-11-06 22:56:44,215 INFO L140 encePairwiseOnDemand]: 819/836 looper letters, 51 selfloop transitions, 53 changer transitions 0/108 dead transitions. [2023-11-06 22:56:44,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 596 flow [2023-11-06 22:56:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:56:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:56:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2556 transitions. [2023-11-06 22:56:44,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43677375256322626 [2023-11-06 22:56:44,239 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2556 transitions. [2023-11-06 22:56:44,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2556 transitions. [2023-11-06 22:56:44,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:56:44,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2556 transitions. [2023-11-06 22:56:44,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 365.14285714285717) internal successors, (2556), 7 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:44,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:44,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:44,274 INFO L175 Difference]: Start difference. First operand has 59 places, 69 transitions, 220 flow. Second operand 7 states and 2556 transitions. [2023-11-06 22:56:44,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 596 flow [2023-11-06 22:56:44,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 108 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:56:44,280 INFO L231 Difference]: Finished difference. Result has 66 places, 108 transitions, 542 flow [2023-11-06 22:56:44,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=66, PETRI_TRANSITIONS=108} [2023-11-06 22:56:44,282 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-11-06 22:56:44,282 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 108 transitions, 542 flow [2023-11-06 22:56:44,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 350.14285714285717) internal successors, (2451), 7 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:44,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:44,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:56:44,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:44,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:56:44,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:56:44,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:44,493 INFO L85 PathProgramCache]: Analyzing trace with hash 50431144, now seen corresponding path program 1 times [2023-11-06 22:56:44,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:44,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114286837] [2023-11-06 22:56:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:44,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:44,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:44,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114286837] [2023-11-06 22:56:44,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114286837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:44,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142962264] [2023-11-06 22:56:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:44,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:44,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:44,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:44,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:56:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:44,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:56:44,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:44,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:44,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142962264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:44,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:56:44,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:56:44,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033414144] [2023-11-06 22:56:44,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:44,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:56:44,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:44,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:56:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:56:44,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 836 [2023-11-06 22:56:44,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 108 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 349.8) internal successors, (1749), 5 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:44,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:44,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 836 [2023-11-06 22:56:44,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:56:45,984 INFO L124 PetriNetUnfolderBase]: 4567/5914 cut-off events. [2023-11-06 22:56:45,985 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-06 22:56:45,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11962 conditions, 5914 events. 4567/5914 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26783 event pairs, 2387 based on Foata normal form. 0/2399 useless extension candidates. Maximal degree in co-relation 11832. Up to 5780 conditions per place. [2023-11-06 22:56:46,041 INFO L140 encePairwiseOnDemand]: 822/836 looper letters, 52 selfloop transitions, 40 changer transitions 0/96 dead transitions. [2023-11-06 22:56:46,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 96 transitions, 645 flow [2023-11-06 22:56:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:56:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:56:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1823 transitions. [2023-11-06 22:56:46,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361244019138756 [2023-11-06 22:56:46,049 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1823 transitions. [2023-11-06 22:56:46,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1823 transitions. [2023-11-06 22:56:46,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:56:46,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1823 transitions. [2023-11-06 22:56:46,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 364.6) internal successors, (1823), 5 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:46,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:46,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 836.0) internal successors, (5016), 6 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:46,073 INFO L175 Difference]: Start difference. First operand has 66 places, 108 transitions, 542 flow. Second operand 5 states and 1823 transitions. [2023-11-06 22:56:46,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 96 transitions, 645 flow [2023-11-06 22:56:46,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 580 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-06 22:56:46,080 INFO L231 Difference]: Finished difference. Result has 65 places, 96 transitions, 476 flow [2023-11-06 22:56:46,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=65, PETRI_TRANSITIONS=96} [2023-11-06 22:56:46,084 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2023-11-06 22:56:46,084 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 96 transitions, 476 flow [2023-11-06 22:56:46,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 349.8) internal successors, (1749), 5 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:46,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:46,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:56:46,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:46,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:46,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:56:46,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:46,293 INFO L85 PathProgramCache]: Analyzing trace with hash 50484338, now seen corresponding path program 1 times [2023-11-06 22:56:46,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:46,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559383083] [2023-11-06 22:56:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:46,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:46,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:46,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559383083] [2023-11-06 22:56:46,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559383083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:46,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:46,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:56:46,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736010653] [2023-11-06 22:56:46,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:46,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:56:46,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:56:46,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:56:46,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 836 [2023-11-06 22:56:46,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 96 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 345.3333333333333) internal successors, (1036), 3 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:46,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:46,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 836 [2023-11-06 22:56:46,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:56:47,672 INFO L124 PetriNetUnfolderBase]: 4566/5913 cut-off events. [2023-11-06 22:56:47,672 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-06 22:56:47,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11967 conditions, 5913 events. 4566/5913 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26810 event pairs, 2387 based on Foata normal form. 1/2405 useless extension candidates. Maximal degree in co-relation 11837. Up to 5807 conditions per place. [2023-11-06 22:56:47,723 INFO L140 encePairwiseOnDemand]: 833/836 looper letters, 89 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-11-06 22:56:47,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 654 flow [2023-11-06 22:56:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:56:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:56:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1086 transitions. [2023-11-06 22:56:47,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2023-11-06 22:56:47,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1086 transitions. [2023-11-06 22:56:47,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1086 transitions. [2023-11-06 22:56:47,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:56:47,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1086 transitions. [2023-11-06 22:56:47,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:47,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:47,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:47,751 INFO L175 Difference]: Start difference. First operand has 65 places, 96 transitions, 476 flow. Second operand 3 states and 1086 transitions. [2023-11-06 22:56:47,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 654 flow [2023-11-06 22:56:47,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 95 transitions, 598 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:56:47,758 INFO L231 Difference]: Finished difference. Result has 64 places, 95 transitions, 420 flow [2023-11-06 22:56:47,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=64, PETRI_TRANSITIONS=95} [2023-11-06 22:56:47,761 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-11-06 22:56:47,762 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 95 transitions, 420 flow [2023-11-06 22:56:47,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 345.3333333333333) internal successors, (1036), 3 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:47,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:47,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:56:47,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:56:47,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:56:47,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1563420273, now seen corresponding path program 1 times [2023-11-06 22:56:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476914241] [2023-11-06 22:56:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:47,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:47,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476914241] [2023-11-06 22:56:47,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476914241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018366098] [2023-11-06 22:56:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:47,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:47,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:47,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:56:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:48,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:56:48,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:56:48,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:48,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018366098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:48,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:56:48,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-06 22:56:48,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153671580] [2023-11-06 22:56:48,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:48,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:56:48,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:56:48,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:48,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 836 [2023-11-06 22:56:48,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 95 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 345.25) internal successors, (1381), 4 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:48,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:48,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 836 [2023-11-06 22:56:48,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:56:49,250 INFO L124 PetriNetUnfolderBase]: 4560/5907 cut-off events. [2023-11-06 22:56:49,251 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-06 22:56:49,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11909 conditions, 5907 events. 4560/5907 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26783 event pairs, 2387 based on Foata normal form. 2/2404 useless extension candidates. Maximal degree in co-relation 11892. Up to 5792 conditions per place. [2023-11-06 22:56:49,292 INFO L140 encePairwiseOnDemand]: 825/836 looper letters, 73 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2023-11-06 22:56:49,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 561 flow [2023-11-06 22:56:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:56:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:56:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1437 transitions. [2023-11-06 22:56:49,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297248803827751 [2023-11-06 22:56:49,300 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1437 transitions. [2023-11-06 22:56:49,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1437 transitions. [2023-11-06 22:56:49,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:56:49,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1437 transitions. [2023-11-06 22:56:49,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 359.25) internal successors, (1437), 4 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:49,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:49,317 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 836.0) internal successors, (4180), 5 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:49,318 INFO L175 Difference]: Start difference. First operand has 64 places, 95 transitions, 420 flow. Second operand 4 states and 1437 transitions. [2023-11-06 22:56:49,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 561 flow [2023-11-06 22:56:49,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 557 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:56:49,325 INFO L231 Difference]: Finished difference. Result has 66 places, 89 transitions, 411 flow [2023-11-06 22:56:49,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=66, PETRI_TRANSITIONS=89} [2023-11-06 22:56:49,327 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-11-06 22:56:49,328 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 89 transitions, 411 flow [2023-11-06 22:56:49,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 345.25) internal successors, (1381), 4 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:49,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:49,329 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:56:49,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:49,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:49,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:56:49,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:49,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1219740809, now seen corresponding path program 2 times [2023-11-06 22:56:49,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:49,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686849688] [2023-11-06 22:56:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:49,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686849688] [2023-11-06 22:56:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686849688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877194365] [2023-11-06 22:56:49,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:56:49,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:49,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:49,640 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:49,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:56:49,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:56:49,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:56:49,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:56:49,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:56:49,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:56:49,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877194365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:49,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:56:49,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:56:49,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32059587] [2023-11-06 22:56:49,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:49,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:56:49,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:49,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:56:49,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:56:49,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 836 [2023-11-06 22:56:49,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 89 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:49,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:49,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 836 [2023-11-06 22:56:49,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:56:50,745 INFO L124 PetriNetUnfolderBase]: 4560/5906 cut-off events. [2023-11-06 22:56:50,745 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-06 22:56:50,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 5906 events. 4560/5906 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 26749 event pairs, 2387 based on Foata normal form. 1/2402 useless extension candidates. Maximal degree in co-relation 11808. Up to 5795 conditions per place. [2023-11-06 22:56:50,799 INFO L140 encePairwiseOnDemand]: 833/836 looper letters, 79 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2023-11-06 22:56:50,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 569 flow [2023-11-06 22:56:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:56:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:56:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1117 transitions. [2023-11-06 22:56:50,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44537480063795853 [2023-11-06 22:56:50,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1117 transitions. [2023-11-06 22:56:50,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1117 transitions. [2023-11-06 22:56:50,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:56:50,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1117 transitions. [2023-11-06 22:56:50,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:50,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:50,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 836.0) internal successors, (3344), 4 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:50,820 INFO L175 Difference]: Start difference. First operand has 66 places, 89 transitions, 411 flow. Second operand 3 states and 1117 transitions. [2023-11-06 22:56:50,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 569 flow [2023-11-06 22:56:50,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 545 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:56:50,825 INFO L231 Difference]: Finished difference. Result has 64 places, 88 transitions, 387 flow [2023-11-06 22:56:50,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=64, PETRI_TRANSITIONS=88} [2023-11-06 22:56:50,828 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-11-06 22:56:50,829 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 88 transitions, 387 flow [2023-11-06 22:56:50,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:50,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:50,830 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:50,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:51,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:51,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:56:51,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1176358391, now seen corresponding path program 1 times [2023-11-06 22:56:51,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:51,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247678076] [2023-11-06 22:56:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:51,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:56:51,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247678076] [2023-11-06 22:56:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247678076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:51,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196757945] [2023-11-06 22:56:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:51,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:51,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:51,277 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:51,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:56:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:51,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:56:51,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:56:51,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:56:51,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196757945] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:51,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:51,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-06 22:56:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304907689] [2023-11-06 22:56:51,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:51,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:56:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:56:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:56:52,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 836 [2023-11-06 22:56:52,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 88 transitions, 387 flow. Second operand has 14 states, 14 states have (on average 339.35714285714283) internal successors, (4751), 14 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:52,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:52,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 836 [2023-11-06 22:56:52,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:56:53,933 INFO L124 PetriNetUnfolderBase]: 8505/11012 cut-off events. [2023-11-06 22:56:53,933 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-11-06 22:56:53,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22141 conditions, 11012 events. 8505/11012 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 53530 event pairs, 4461 based on Foata normal form. 2/4564 useless extension candidates. Maximal degree in co-relation 22029. Up to 5712 conditions per place. [2023-11-06 22:56:54,007 INFO L140 encePairwiseOnDemand]: 822/836 looper letters, 99 selfloop transitions, 30 changer transitions 0/133 dead transitions. [2023-11-06 22:56:54,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 133 transitions, 768 flow [2023-11-06 22:56:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:56:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:56:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2816 transitions. [2023-11-06 22:56:54,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2023-11-06 22:56:54,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2816 transitions. [2023-11-06 22:56:54,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2816 transitions. [2023-11-06 22:56:54,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:56:54,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2816 transitions. [2023-11-06 22:56:54,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:54,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:54,045 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 836.0) internal successors, (7524), 9 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:54,045 INFO L175 Difference]: Start difference. First operand has 64 places, 88 transitions, 387 flow. Second operand 8 states and 2816 transitions. [2023-11-06 22:56:54,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 133 transitions, 768 flow [2023-11-06 22:56:54,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 758 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:56:54,050 INFO L231 Difference]: Finished difference. Result has 70 places, 96 transitions, 492 flow [2023-11-06 22:56:54,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=492, PETRI_PLACES=70, PETRI_TRANSITIONS=96} [2023-11-06 22:56:54,051 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 1 predicate places. [2023-11-06 22:56:54,051 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 96 transitions, 492 flow [2023-11-06 22:56:54,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 339.35714285714283) internal successors, (4751), 14 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:54,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:54,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:54,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:54,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:54,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:56:54,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:54,265 INFO L85 PathProgramCache]: Analyzing trace with hash -793336950, now seen corresponding path program 1 times [2023-11-06 22:56:54,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:54,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943950200] [2023-11-06 22:56:54,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:54,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:56:54,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:54,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943950200] [2023-11-06 22:56:54,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943950200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:54,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935406142] [2023-11-06 22:56:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:54,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:54,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:54,624 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:54,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:56:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:54,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:56:54,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:54,822 INFO L351 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 [2023-11-06 22:56:54,848 INFO L351 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 [2023-11-06 22:56:54,872 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:56:54,872 INFO L351 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 [2023-11-06 22:56:54,902 INFO L351 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 [2023-11-06 22:56:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:56:54,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:54,945 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_218 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_218) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-11-06 22:56:55,006 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:56:55,006 INFO L351 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 [2023-11-06 22:56:55,017 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:56:55,018 INFO L351 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 [2023-11-06 22:56:55,025 INFO L351 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 [2023-11-06 22:56:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-06 22:56:55,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935406142] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:55,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:55,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 22:56:55,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794893341] [2023-11-06 22:56:55,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:55,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:56:55,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:55,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:56:55,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2023-11-06 22:56:55,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 836 [2023-11-06 22:56:55,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 96 transitions, 492 flow. Second operand has 12 states, 12 states have (on average 302.25) internal successors, (3627), 12 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:55,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:55,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 836 [2023-11-06 22:56:55,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:56:56,858 INFO L124 PetriNetUnfolderBase]: 8563/11097 cut-off events. [2023-11-06 22:56:56,858 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2023-11-06 22:56:56,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22565 conditions, 11097 events. 8563/11097 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 53867 event pairs, 4496 based on Foata normal form. 0/4807 useless extension candidates. Maximal degree in co-relation 22456. Up to 10853 conditions per place. [2023-11-06 22:56:56,922 INFO L140 encePairwiseOnDemand]: 825/836 looper letters, 52 selfloop transitions, 35 changer transitions 0/91 dead transitions. [2023-11-06 22:56:56,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 631 flow [2023-11-06 22:56:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:56:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:56:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2161 transitions. [2023-11-06 22:56:56,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36927546138072453 [2023-11-06 22:56:56,935 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2161 transitions. [2023-11-06 22:56:56,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2161 transitions. [2023-11-06 22:56:56,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:56:56,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2161 transitions. [2023-11-06 22:56:56,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 308.7142857142857) internal successors, (2161), 7 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:56,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:56,955 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:56,955 INFO L175 Difference]: Start difference. First operand has 70 places, 96 transitions, 492 flow. Second operand 7 states and 2161 transitions. [2023-11-06 22:56:56,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 631 flow [2023-11-06 22:56:56,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 574 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:56:56,961 INFO L231 Difference]: Finished difference. Result has 72 places, 91 transitions, 470 flow [2023-11-06 22:56:56,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=470, PETRI_PLACES=72, PETRI_TRANSITIONS=91} [2023-11-06 22:56:56,964 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2023-11-06 22:56:56,964 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 91 transitions, 470 flow [2023-11-06 22:56:56,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 302.25) internal successors, (3627), 12 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:56,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:56:56,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:56,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:56:57,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:57,173 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:56:57,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:57,173 INFO L85 PathProgramCache]: Analyzing trace with hash -793336938, now seen corresponding path program 1 times [2023-11-06 22:56:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:57,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423148732] [2023-11-06 22:56:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:57,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423148732] [2023-11-06 22:56:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423148732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:56:57,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940367885] [2023-11-06 22:56:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:57,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:56:57,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:57,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:56:57,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:56:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:57,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:56:57,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:56:57,893 INFO L351 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 [2023-11-06 22:56:57,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,901 INFO L351 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 [2023-11-06 22:56:57,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,918 INFO L351 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 [2023-11-06 22:56:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,925 INFO L351 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 [2023-11-06 22:56:57,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,930 INFO L351 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 [2023-11-06 22:56:57,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,939 INFO L351 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 [2023-11-06 22:56:57,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,952 INFO L351 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 [2023-11-06 22:56:57,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,963 INFO L351 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 [2023-11-06 22:56:57,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,972 INFO L351 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 [2023-11-06 22:56:57,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,978 INFO L351 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 [2023-11-06 22:56:57,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,990 INFO L351 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 [2023-11-06 22:56:57,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:57,996 INFO L351 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 [2023-11-06 22:56:58,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,010 INFO L351 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 [2023-11-06 22:56:58,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,016 INFO L351 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 [2023-11-06 22:56:58,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,028 INFO L351 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 [2023-11-06 22:56:58,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,040 INFO L351 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 [2023-11-06 22:56:58,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,048 INFO L351 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 [2023-11-06 22:56:58,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,056 INFO L351 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 [2023-11-06 22:56:58,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,067 INFO L351 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 [2023-11-06 22:56:58,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,074 INFO L351 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 [2023-11-06 22:56:58,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,079 INFO L351 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 [2023-11-06 22:56:58,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,085 INFO L351 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 [2023-11-06 22:56:58,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,090 INFO L351 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 [2023-11-06 22:56:58,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:56:58,096 INFO L351 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 [2023-11-06 22:56:58,108 INFO L351 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 [2023-11-06 22:56:58,138 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:56:58,138 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:56:58,156 INFO L351 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 [2023-11-06 22:56:58,171 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:56:58,172 INFO L351 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 [2023-11-06 22:56:58,184 INFO L351 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 [2023-11-06 22:56:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:58,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:56:58,314 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_263 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_263) c_~A~0.base) c_~A~0.offset) 2147483648)) is different from false [2023-11-06 22:56:58,443 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:56:58,443 INFO L351 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 25 treesize of output 26 [2023-11-06 22:56:58,455 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:56:58,455 INFO L351 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 63 treesize of output 59 [2023-11-06 22:56:58,463 INFO L351 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 48 treesize of output 44 [2023-11-06 22:56:58,476 INFO L351 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 [2023-11-06 22:56:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:56:58,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940367885] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:56:58,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:56:58,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:56:58,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851533734] [2023-11-06 22:56:58,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:56:58,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:56:58,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:58,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:56:58,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=119, Unknown=2, NotChecked=22, Total=182 [2023-11-06 22:56:58,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 836 [2023-11-06 22:56:58,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 91 transitions, 470 flow. Second operand has 14 states, 14 states have (on average 302.0) internal successors, (4228), 14 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:58,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:56:58,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 836 [2023-11-06 22:56:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:00,573 INFO L124 PetriNetUnfolderBase]: 8560/11092 cut-off events. [2023-11-06 22:57:00,573 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2023-11-06 22:57:00,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22544 conditions, 11092 events. 8560/11092 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 53912 event pairs, 4496 based on Foata normal form. 0/4807 useless extension candidates. Maximal degree in co-relation 22439. Up to 10853 conditions per place. [2023-11-06 22:57:00,662 INFO L140 encePairwiseOnDemand]: 826/836 looper letters, 52 selfloop transitions, 30 changer transitions 0/86 dead transitions. [2023-11-06 22:57:00,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 593 flow [2023-11-06 22:57:00,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:57:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:57:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2160 transitions. [2023-11-06 22:57:00,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36910457963089544 [2023-11-06 22:57:00,676 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2160 transitions. [2023-11-06 22:57:00,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2160 transitions. [2023-11-06 22:57:00,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:00,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2160 transitions. [2023-11-06 22:57:00,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 308.57142857142856) internal successors, (2160), 7 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:00,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:00,699 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 836.0) internal successors, (6688), 8 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:00,699 INFO L175 Difference]: Start difference. First operand has 72 places, 91 transitions, 470 flow. Second operand 7 states and 2160 transitions. [2023-11-06 22:57:00,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 593 flow [2023-11-06 22:57:00,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 583 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:00,705 INFO L231 Difference]: Finished difference. Result has 76 places, 86 transitions, 479 flow [2023-11-06 22:57:00,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=836, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=479, PETRI_PLACES=76, PETRI_TRANSITIONS=86} [2023-11-06 22:57:00,706 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 7 predicate places. [2023-11-06 22:57:00,706 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 86 transitions, 479 flow [2023-11-06 22:57:00,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 302.0) internal successors, (4228), 14 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:00,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:00,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:00,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:00,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:00,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-06 22:57:00,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash -793336936, now seen corresponding path program 2 times [2023-11-06 22:57:00,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:00,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298803818] [2023-11-06 22:57:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:00,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:01,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:01,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298803818] [2023-11-06 22:57:01,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298803818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930861386] [2023-11-06 22:57:01,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:57:01,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:01,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:01,636 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:01,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b83c945-8883-4a60-ad1f-32c2efadccb7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:57:01,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:57:01,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:57:01,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:57:01,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:01,834 INFO L351 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 [2023-11-06 22:57:01,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,842 INFO L351 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 [2023-11-06 22:57:01,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,849 INFO L351 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 [2023-11-06 22:57:01,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,854 INFO L351 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 [2023-11-06 22:57:01,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,865 INFO L351 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 [2023-11-06 22:57:01,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,871 INFO L351 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 [2023-11-06 22:57:01,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,881 INFO L351 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 [2023-11-06 22:57:01,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,887 INFO L351 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 [2023-11-06 22:57:01,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,898 INFO L351 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 [2023-11-06 22:57:01,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,908 INFO L351 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 [2023-11-06 22:57:01,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,919 INFO L351 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 [2023-11-06 22:57:01,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,923 INFO L351 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 [2023-11-06 22:57:01,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,939 INFO L351 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 [2023-11-06 22:57:01,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,946 INFO L351 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 [2023-11-06 22:57:01,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,959 INFO L351 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 [2023-11-06 22:57:01,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,966 INFO L351 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 [2023-11-06 22:57:01,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,980 INFO L351 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 [2023-11-06 22:57:01,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:01,996 INFO L351 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 [2023-11-06 22:57:02,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,007 INFO L351 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 [2023-11-06 22:57:02,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,016 INFO L351 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 [2023-11-06 22:57:02,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,022 INFO L351 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 [2023-11-06 22:57:02,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,028 INFO L351 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 [2023-11-06 22:57:02,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,035 INFO L351 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 [2023-11-06 22:57:02,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:57:02,041 INFO L351 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 [2023-11-06 22:57:02,067 INFO L351 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 [2023-11-06 22:57:02,115 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 22:57:02,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-06 22:57:02,152 INFO L351 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 [2023-11-06 22:57:02,193 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:57:02,193 INFO L351 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 [2023-11-06 22:57:02,207 INFO L351 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 [2023-11-06 22:57:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:02,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:02,621 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_307 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_307))) (or (< 0 (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) 2147483649)) (forall ((~B~0.offset Int) (~B~0.base Int)) (not (= (select (select .cse0 ~B~0.base) ~B~0.offset) 0)))))) (forall ((v_ArrVal_307 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_307))) (let ((.cse1 (select (select .cse2 ~B~0.base) ~B~0.offset))) (or (< .cse1 1) (< 4294967295 .cse1) (< 0 (+ (select (select .cse2 c_~A~0.base) c_~A~0.offset) 2147483649 .cse1))))))) is different from false [2023-11-06 22:57:03,092 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:57:03,092 INFO L351 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 186 treesize of output 127 [2023-11-06 22:57:03,173 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:57:03,173 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1119 treesize of output 1090 [2023-11-06 22:57:03,284 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:57:03,284 INFO L351 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 527 treesize of output 528 [2023-11-06 22:57:03,339 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:57:03,340 INFO L351 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 519 treesize of output 524 [2023-11-06 22:57:03,395 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:57:03,396 INFO L351 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 515 treesize of output 484 [2023-11-06 22:57:03,447 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:57:03,448 INFO L351 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 475 treesize of output 464