./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:35,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:35,561 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:43:35,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:35,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:35,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:35,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:35,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:35,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:35,600 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:35,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:35,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:35,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:35,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:35,603 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:35,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:35,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:35,605 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:35,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:35,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:35,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:35,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:35,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:35,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:35,609 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:43:35,610 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:35,611 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:35,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:35,612 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:35,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:35,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:35,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:35,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:35,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:35,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:35,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:35,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:35,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:35,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:35,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:35,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:35,618 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:35,618 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:35,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:35,619 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_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2023-11-26 10:43:35,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:35,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:35,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:35,965 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:35,965 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:35,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2023-11-26 10:43:39,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:39,489 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:39,490 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2023-11-26 10:43:39,499 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/data/e90252c7b/4bf42e216fe54e11a498831f42739ed2/FLAGab83dcb8b [2023-11-26 10:43:39,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/data/e90252c7b/4bf42e216fe54e11a498831f42739ed2 [2023-11-26 10:43:39,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:39,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:39,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:39,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:39,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:39,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b96748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39, skipping insertion in model container [2023-11-26 10:43:39,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,554 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:39,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:39,750 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:39,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:39,791 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:39,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39 WrapperNode [2023-11-26 10:43:39,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:39,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:39,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:39,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:39,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,841 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 149 [2023-11-26 10:43:39,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:39,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:39,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:39,854 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:39,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,880 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:43:39,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:39,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:39,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:39,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:39,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (1/1) ... [2023-11-26 10:43:39,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:39,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:39,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:39,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:43:39,991 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:43:39,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:39,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:39,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 10:43:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 10:43:40,067 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:40,070 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:40,608 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:40,655 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:40,661 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:43:40,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:40 BoogieIcfgContainer [2023-11-26 10:43:40,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:40,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:40,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:40,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:40,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:39" (1/3) ... [2023-11-26 10:43:40,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccfb009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:40, skipping insertion in model container [2023-11-26 10:43:40,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:39" (2/3) ... [2023-11-26 10:43:40,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccfb009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:40, skipping insertion in model container [2023-11-26 10:43:40,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:40" (3/3) ... [2023-11-26 10:43:40,672 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2023-11-26 10:43:40,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:40,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2023-11-26 10:43:40,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:40,746 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a506300, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:40,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-11-26 10:43:40,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 79 states have (on average 1.9113924050632911) internal successors, (151), 144 states have internal predecessors, (151), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 10:43:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 10:43:40,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:40,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:40,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:40,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1634057786, now seen corresponding path program 1 times [2023-11-26 10:43:40,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399646588] [2023-11-26 10:43:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:40,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399646588] [2023-11-26 10:43:40,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:43:40,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146415968] [2023-11-26 10:43:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:40,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:43:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:43:41,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:43:41,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:41,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146415968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:41,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:41,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498036859] [2023-11-26 10:43:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:41,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:43:41,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:43:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:41,179 INFO L87 Difference]: Start difference. First operand has 158 states, 79 states have (on average 1.9113924050632911) internal successors, (151), 144 states have internal predecessors, (151), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:43:41,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:41,225 INFO L93 Difference]: Finished difference Result 313 states and 359 transitions. [2023-11-26 10:43:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:43:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-26 10:43:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:41,237 INFO L225 Difference]: With dead ends: 313 [2023-11-26 10:43:41,237 INFO L226 Difference]: Without dead ends: 154 [2023-11-26 10:43:41,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:41,246 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:41,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:41,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-26 10:43:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-26 10:43:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 78 states have (on average 1.8205128205128205) internal successors, (142), 141 states have internal predecessors, (142), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 10:43:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2023-11-26 10:43:41,300 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 24 [2023-11-26 10:43:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:41,301 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2023-11-26 10:43:41,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:43:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2023-11-26 10:43:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 10:43:41,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:41,304 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:41,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:41,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:43:41,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:41,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash 385715966, now seen corresponding path program 1 times [2023-11-26 10:43:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:41,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231103626] [2023-11-26 10:43:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:41,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:41,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:41,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200850986] [2023-11-26 10:43:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:41,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:41,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:43:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 10:43:41,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 10:43:41,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:41,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:41,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231103626] [2023-11-26 10:43:41,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:41,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200850986] [2023-11-26 10:43:41,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200850986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:41,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:41,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:41,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427102556] [2023-11-26 10:43:41,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:41,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:41,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:41,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:43:41,756 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 7 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 10:43:42,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:42,056 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2023-11-26 10:43:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:43:42,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-11-26 10:43:42,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:42,059 INFO L225 Difference]: With dead ends: 154 [2023-11-26 10:43:42,060 INFO L226 Difference]: Without dead ends: 152 [2023-11-26 10:43:42,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:43:42,062 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 133 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:42,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 251 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:43:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-26 10:43:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-11-26 10:43:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 78 states have (on average 1.794871794871795) internal successors, (140), 139 states have internal predecessors, (140), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 10:43:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2023-11-26 10:43:42,080 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 24 [2023-11-26 10:43:42,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:42,082 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2023-11-26 10:43:42,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 10:43:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2023-11-26 10:43:42,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-26 10:43:42,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:42,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:42,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:42,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:42,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,291 INFO L85 PathProgramCache]: Analyzing trace with hash -927706900, now seen corresponding path program 1 times [2023-11-26 10:43:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268505909] [2023-11-26 10:43:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:42,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:42,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:42,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353980622] [2023-11-26 10:43:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:42,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:42,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:43:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 10:43:42,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 10:43:42,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:42,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268505909] [2023-11-26 10:43:42,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:42,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353980622] [2023-11-26 10:43:42,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353980622] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:42,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:42,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 10:43:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703032683] [2023-11-26 10:43:42,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:42,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:43:42,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:43:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:42,939 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand has 11 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-26 10:43:43,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:43,258 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2023-11-26 10:43:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:43:43,259 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 25 [2023-11-26 10:43:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:43,260 INFO L225 Difference]: With dead ends: 152 [2023-11-26 10:43:43,261 INFO L226 Difference]: Without dead ends: 151 [2023-11-26 10:43:43,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:43:43,262 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 389 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:43,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 251 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:43:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-26 10:43:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-26 10:43:43,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 78 states have (on average 1.7820512820512822) internal successors, (139), 138 states have internal predecessors, (139), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 10:43:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 161 transitions. [2023-11-26 10:43:43,279 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 161 transitions. Word has length 25 [2023-11-26 10:43:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:43,279 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 161 transitions. [2023-11-26 10:43:43,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.125) internal successors, (17), 9 states have internal predecessors, (17), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-26 10:43:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 161 transitions. [2023-11-26 10:43:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-26 10:43:43,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:43,281 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:43,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:43,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:43,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1810640804, now seen corresponding path program 1 times [2023-11-26 10:43:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:43,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983006942] [2023-11-26 10:43:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:43,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:43,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:43,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440534202] [2023-11-26 10:43:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:43,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:43,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,508 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:43:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:43,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:43:43,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:43,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:43,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983006942] [2023-11-26 10:43:43,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:43,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440534202] [2023-11-26 10:43:43,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440534202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:43,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:43,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-26 10:43:43,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551099171] [2023-11-26 10:43:43,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:43,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:43,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:43,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:43:43,716 INFO L87 Difference]: Start difference. First operand 151 states and 161 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 10:43:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:44,050 INFO L93 Difference]: Finished difference Result 268 states and 284 transitions. [2023-11-26 10:43:44,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:43:44,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2023-11-26 10:43:44,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:44,053 INFO L225 Difference]: With dead ends: 268 [2023-11-26 10:43:44,053 INFO L226 Difference]: Without dead ends: 238 [2023-11-26 10:43:44,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:44,055 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 301 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:44,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 323 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:43:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-26 10:43:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 199. [2023-11-26 10:43:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 122 states have (on average 1.8278688524590163) internal successors, (223), 181 states have internal predecessors, (223), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 10:43:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 253 transitions. [2023-11-26 10:43:44,075 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 253 transitions. Word has length 40 [2023-11-26 10:43:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:44,076 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 253 transitions. [2023-11-26 10:43:44,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 10:43:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 253 transitions. [2023-11-26 10:43:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-26 10:43:44,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:44,078 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:44,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:44,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:44,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:44,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash 295288537, now seen corresponding path program 1 times [2023-11-26 10:43:44,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:44,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330244965] [2023-11-26 10:43:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:44,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:44,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:44,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759521766] [2023-11-26 10:43:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:44,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:44,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:44,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:44,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:43:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:44,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:44,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:44,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330244965] [2023-11-26 10:43:44,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:44,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759521766] [2023-11-26 10:43:44,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759521766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:44,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:44,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 10:43:44,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849265322] [2023-11-26 10:43:44,527 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:44,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:44,529 INFO L87 Difference]: Start difference. First operand 199 states and 253 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 10:43:45,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:45,118 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2023-11-26 10:43:45,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:43:45,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2023-11-26 10:43:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:45,121 INFO L225 Difference]: With dead ends: 239 [2023-11-26 10:43:45,121 INFO L226 Difference]: Without dead ends: 237 [2023-11-26 10:43:45,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:45,123 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 378 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:45,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 317 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:43:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-26 10:43:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2023-11-26 10:43:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 122 states have (on average 1.8114754098360655) internal successors, (221), 181 states have internal predecessors, (221), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 10:43:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 251 transitions. [2023-11-26 10:43:45,139 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 251 transitions. Word has length 41 [2023-11-26 10:43:45,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:45,139 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 251 transitions. [2023-11-26 10:43:45,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 10:43:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 251 transitions. [2023-11-26 10:43:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 10:43:45,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:45,141 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:45,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:45,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:45,351 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:45,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:45,352 INFO L85 PathProgramCache]: Analyzing trace with hash 564010130, now seen corresponding path program 1 times [2023-11-26 10:43:45,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:45,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465495658] [2023-11-26 10:43:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:45,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:45,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:45,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172312117] [2023-11-26 10:43:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:45,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:45,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:45,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:45,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:43:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:45,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:43:45,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:45,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:45,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465495658] [2023-11-26 10:43:45,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172312117] [2023-11-26 10:43:45,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172312117] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:45,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:45,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 10:43:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908370607] [2023-11-26 10:43:45,620 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:45,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:45,623 INFO L87 Difference]: Start difference. First operand 199 states and 251 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 10:43:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:46,117 INFO L93 Difference]: Finished difference Result 320 states and 341 transitions. [2023-11-26 10:43:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:43:46,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-11-26 10:43:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:46,121 INFO L225 Difference]: With dead ends: 320 [2023-11-26 10:43:46,121 INFO L226 Difference]: Without dead ends: 318 [2023-11-26 10:43:46,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:46,122 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 519 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:46,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 349 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:43:46,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-26 10:43:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 245. [2023-11-26 10:43:46,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 164 states have (on average 1.8231707317073171) internal successors, (299), 223 states have internal predecessors, (299), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:43:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 337 transitions. [2023-11-26 10:43:46,141 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 337 transitions. Word has length 42 [2023-11-26 10:43:46,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:46,142 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 337 transitions. [2023-11-26 10:43:46,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 10:43:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 337 transitions. [2023-11-26 10:43:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 10:43:46,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:46,144 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:46,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:46,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 10:43:46,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:46,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:46,350 INFO L85 PathProgramCache]: Analyzing trace with hash 304444923, now seen corresponding path program 1 times [2023-11-26 10:43:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:46,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529174963] [2023-11-26 10:43:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:46,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:46,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:46,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90674580] [2023-11-26 10:43:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:46,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:46,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:46,376 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:46,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:43:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:46,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:43:46,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:46,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529174963] [2023-11-26 10:43:46,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:46,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90674580] [2023-11-26 10:43:46,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90674580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:46,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:46,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:43:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657735586] [2023-11-26 10:43:46,686 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:46,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:43:46,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:46,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:43:46,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:46,688 INFO L87 Difference]: Start difference. First operand 245 states and 337 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:43:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:47,735 INFO L93 Difference]: Finished difference Result 362 states and 383 transitions. [2023-11-26 10:43:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:43:47,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2023-11-26 10:43:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:47,738 INFO L225 Difference]: With dead ends: 362 [2023-11-26 10:43:47,739 INFO L226 Difference]: Without dead ends: 361 [2023-11-26 10:43:47,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:43:47,740 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 544 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:47,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 550 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:43:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-26 10:43:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 245. [2023-11-26 10:43:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 164 states have (on average 1.8170731707317074) internal successors, (298), 223 states have internal predecessors, (298), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:43:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 336 transitions. [2023-11-26 10:43:47,759 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 336 transitions. Word has length 43 [2023-11-26 10:43:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:47,760 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 336 transitions. [2023-11-26 10:43:47,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:43:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 336 transitions. [2023-11-26 10:43:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-26 10:43:47,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:47,761 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:47,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:47,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 10:43:47,971 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:47,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 847858100, now seen corresponding path program 1 times [2023-11-26 10:43:47,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:47,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210557227] [2023-11-26 10:43:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:48,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:48,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435198840] [2023-11-26 10:43:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:48,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:48,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:48,035 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:48,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:43:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:48,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 10:43:48,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:43:48,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:48,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:48,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210557227] [2023-11-26 10:43:48,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:48,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435198840] [2023-11-26 10:43:48,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435198840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:48,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:48,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:43:48,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064730562] [2023-11-26 10:43:48,414 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:48,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:43:48,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:48,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:43:48,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:43:48,416 INFO L87 Difference]: Start difference. First operand 245 states and 336 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:43:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:49,941 INFO L93 Difference]: Finished difference Result 318 states and 338 transitions. [2023-11-26 10:43:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:49,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2023-11-26 10:43:49,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:49,945 INFO L225 Difference]: With dead ends: 318 [2023-11-26 10:43:49,945 INFO L226 Difference]: Without dead ends: 316 [2023-11-26 10:43:49,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:43:49,946 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 768 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:49,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 264 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 10:43:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-26 10:43:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 245. [2023-11-26 10:43:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 164 states have (on average 1.8048780487804879) internal successors, (296), 223 states have internal predecessors, (296), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:43:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 334 transitions. [2023-11-26 10:43:49,960 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 334 transitions. Word has length 44 [2023-11-26 10:43:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:49,961 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 334 transitions. [2023-11-26 10:43:49,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:43:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 334 transitions. [2023-11-26 10:43:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 10:43:49,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:49,963 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:49,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:50,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:50,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:50,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash -251836423, now seen corresponding path program 1 times [2023-11-26 10:43:50,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:50,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092894347] [2023-11-26 10:43:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:50,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:50,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:50,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037231040] [2023-11-26 10:43:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:50,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:50,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:50,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:50,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:43:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:50,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:43:50,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:43:50,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:50,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:50,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092894347] [2023-11-26 10:43:50,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:50,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037231040] [2023-11-26 10:43:50,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037231040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:50,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:50,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 10:43:50,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715444200] [2023-11-26 10:43:50,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:50,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:43:50,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:43:50,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:43:50,545 INFO L87 Difference]: Start difference. First operand 245 states and 334 transitions. Second operand has 10 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 10:43:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:50,957 INFO L93 Difference]: Finished difference Result 301 states and 356 transitions. [2023-11-26 10:43:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:50,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 50 [2023-11-26 10:43:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:50,960 INFO L225 Difference]: With dead ends: 301 [2023-11-26 10:43:50,961 INFO L226 Difference]: Without dead ends: 300 [2023-11-26 10:43:50,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:50,964 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 421 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:50,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 450 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:43:50,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-26 10:43:50,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 252. [2023-11-26 10:43:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 170 states have (on average 1.7882352941176471) internal successors, (304), 229 states have internal predecessors, (304), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 344 transitions. [2023-11-26 10:43:50,983 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 344 transitions. Word has length 50 [2023-11-26 10:43:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:50,983 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 344 transitions. [2023-11-26 10:43:50,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 10:43:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 344 transitions. [2023-11-26 10:43:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 10:43:50,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:50,991 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:51,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:51,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:51,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:51,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:51,200 INFO L85 PathProgramCache]: Analyzing trace with hash 783005563, now seen corresponding path program 1 times [2023-11-26 10:43:51,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:51,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302381522] [2023-11-26 10:43:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:51,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:51,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:51,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286911547] [2023-11-26 10:43:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:51,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:51,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:51,230 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:51,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 10:43:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:51,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:43:51,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:43:51,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:51,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302381522] [2023-11-26 10:43:51,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286911547] [2023-11-26 10:43:51,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286911547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:51,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:51,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 10:43:51,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608592879] [2023-11-26 10:43:51,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:51,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:43:51,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:43:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:43:51,595 INFO L87 Difference]: Start difference. First operand 252 states and 344 transitions. Second operand has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 10:43:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:51,934 INFO L93 Difference]: Finished difference Result 302 states and 355 transitions. [2023-11-26 10:43:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:51,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 51 [2023-11-26 10:43:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:51,937 INFO L225 Difference]: With dead ends: 302 [2023-11-26 10:43:51,937 INFO L226 Difference]: Without dead ends: 301 [2023-11-26 10:43:51,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:51,938 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 292 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:51,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 472 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:43:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-26 10:43:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 253. [2023-11-26 10:43:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 171 states have (on average 1.7719298245614035) internal successors, (303), 230 states have internal predecessors, (303), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 343 transitions. [2023-11-26 10:43:51,955 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 343 transitions. Word has length 51 [2023-11-26 10:43:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:51,955 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 343 transitions. [2023-11-26 10:43:51,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 10:43:51,956 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 343 transitions. [2023-11-26 10:43:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 10:43:51,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:51,957 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:51,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:52,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:43:52,163 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:52,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:52,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1496631237, now seen corresponding path program 1 times [2023-11-26 10:43:52,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:52,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863797092] [2023-11-26 10:43:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:52,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:52,178 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:52,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813343407] [2023-11-26 10:43:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:52,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:52,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:52,180 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:52,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 10:43:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:52,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:43:52,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:52,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:52,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:52,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863797092] [2023-11-26 10:43:52,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:52,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813343407] [2023-11-26 10:43:52,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813343407] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:52,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:52,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 10:43:52,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335161105] [2023-11-26 10:43:52,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:52,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:43:52,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:43:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:52,496 INFO L87 Difference]: Start difference. First operand 253 states and 343 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-26 10:43:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:53,828 INFO L93 Difference]: Finished difference Result 294 states and 346 transitions. [2023-11-26 10:43:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 52 [2023-11-26 10:43:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:53,831 INFO L225 Difference]: With dead ends: 294 [2023-11-26 10:43:53,831 INFO L226 Difference]: Without dead ends: 293 [2023-11-26 10:43:53,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:53,832 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 618 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:53,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 491 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 10:43:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-26 10:43:53,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 254. [2023-11-26 10:43:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 172 states have (on average 1.755813953488372) internal successors, (302), 231 states have internal predecessors, (302), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 342 transitions. [2023-11-26 10:43:53,849 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 342 transitions. Word has length 52 [2023-11-26 10:43:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:53,849 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 342 transitions. [2023-11-26 10:43:53,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-26 10:43:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 342 transitions. [2023-11-26 10:43:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 10:43:53,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:53,851 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:53,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:54,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:54,057 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:54,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:54,058 INFO L85 PathProgramCache]: Analyzing trace with hash 849071997, now seen corresponding path program 1 times [2023-11-26 10:43:54,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:54,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131556931] [2023-11-26 10:43:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:54,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:54,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:54,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930777837] [2023-11-26 10:43:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:54,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:54,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:54,076 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:54,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 10:43:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:54,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:43:54,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:54,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131556931] [2023-11-26 10:43:54,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930777837] [2023-11-26 10:43:54,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930777837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:54,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:54,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 10:43:54,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798850170] [2023-11-26 10:43:54,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:54,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:43:54,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:54,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:43:54,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:54,464 INFO L87 Difference]: Start difference. First operand 254 states and 342 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-26 10:43:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:54,787 INFO L93 Difference]: Finished difference Result 294 states and 345 transitions. [2023-11-26 10:43:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:54,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 53 [2023-11-26 10:43:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:54,792 INFO L225 Difference]: With dead ends: 294 [2023-11-26 10:43:54,792 INFO L226 Difference]: Without dead ends: 293 [2023-11-26 10:43:54,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:54,794 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 401 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:54,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 361 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:43:54,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-26 10:43:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 255. [2023-11-26 10:43:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.739884393063584) internal successors, (301), 232 states have internal predecessors, (301), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 341 transitions. [2023-11-26 10:43:54,816 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 341 transitions. Word has length 53 [2023-11-26 10:43:54,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:54,817 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 341 transitions. [2023-11-26 10:43:54,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-26 10:43:54,817 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 341 transitions. [2023-11-26 10:43:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-26 10:43:54,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:54,819 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:54,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-26 10:43:55,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:55,026 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:55,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:55,026 INFO L85 PathProgramCache]: Analyzing trace with hash 551428221, now seen corresponding path program 1 times [2023-11-26 10:43:55,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:55,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49098147] [2023-11-26 10:43:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:55,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:55,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:55,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421992496] [2023-11-26 10:43:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:55,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:55,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:55,054 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:55,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 10:43:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:55,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:43:55,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:55,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:55,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:55,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49098147] [2023-11-26 10:43:55,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:55,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421992496] [2023-11-26 10:43:55,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421992496] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:55,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:55,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 10:43:55,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175927939] [2023-11-26 10:43:55,388 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:55,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:55,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:43:55,389 INFO L87 Difference]: Start difference. First operand 255 states and 341 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 10:43:55,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:55,716 INFO L93 Difference]: Finished difference Result 289 states and 342 transitions. [2023-11-26 10:43:55,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:43:55,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 54 [2023-11-26 10:43:55,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:55,720 INFO L225 Difference]: With dead ends: 289 [2023-11-26 10:43:55,720 INFO L226 Difference]: Without dead ends: 288 [2023-11-26 10:43:55,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:43:55,721 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 261 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:55,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 354 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:43:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-26 10:43:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 255. [2023-11-26 10:43:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.7283236994219653) internal successors, (299), 232 states have internal predecessors, (299), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 339 transitions. [2023-11-26 10:43:55,737 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 339 transitions. Word has length 54 [2023-11-26 10:43:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:55,738 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 339 transitions. [2023-11-26 10:43:55,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 10:43:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 339 transitions. [2023-11-26 10:43:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 10:43:55,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:55,739 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:55,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:55,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 10:43:55,945 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:55,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:55,946 INFO L85 PathProgramCache]: Analyzing trace with hash -85594241, now seen corresponding path program 1 times [2023-11-26 10:43:55,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:55,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167339036] [2023-11-26 10:43:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:55,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:55,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:55,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215638682] [2023-11-26 10:43:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:55,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:55,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:55,980 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:56,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 10:43:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:56,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:43:56,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:43:56,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:56,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:56,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167339036] [2023-11-26 10:43:56,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:56,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215638682] [2023-11-26 10:43:56,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215638682] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:56,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:43:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303655684] [2023-11-26 10:43:56,303 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:56,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:43:56,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:56,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:43:56,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:43:56,305 INFO L87 Difference]: Start difference. First operand 255 states and 339 transitions. Second operand has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 10:43:56,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:56,834 INFO L93 Difference]: Finished difference Result 296 states and 348 transitions. [2023-11-26 10:43:56,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:56,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2023-11-26 10:43:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:56,837 INFO L225 Difference]: With dead ends: 296 [2023-11-26 10:43:56,837 INFO L226 Difference]: Without dead ends: 295 [2023-11-26 10:43:56,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:56,838 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 279 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:56,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 417 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:43:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-26 10:43:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 255. [2023-11-26 10:43:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.716763005780347) internal successors, (297), 232 states have internal predecessors, (297), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 337 transitions. [2023-11-26 10:43:56,870 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 337 transitions. Word has length 55 [2023-11-26 10:43:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:56,871 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 337 transitions. [2023-11-26 10:43:56,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 10:43:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 337 transitions. [2023-11-26 10:43:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 10:43:56,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:56,872 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:56,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:57,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 10:43:57,078 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:57,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:57,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1585765133, now seen corresponding path program 1 times [2023-11-26 10:43:57,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:57,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994507960] [2023-11-26 10:43:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:57,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:57,089 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:57,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873705124] [2023-11-26 10:43:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:57,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:57,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:57,091 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:57,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 10:43:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:57,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:43:57,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 10:43:57,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:57,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994507960] [2023-11-26 10:43:57,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873705124] [2023-11-26 10:43:57,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873705124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:57,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:57,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 10:43:57,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78805773] [2023-11-26 10:43:57,468 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:57,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:57,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:57,469 INFO L87 Difference]: Start difference. First operand 255 states and 337 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:43:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:58,138 INFO L93 Difference]: Finished difference Result 293 states and 346 transitions. [2023-11-26 10:43:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:43:58,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2023-11-26 10:43:58,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:58,142 INFO L225 Difference]: With dead ends: 293 [2023-11-26 10:43:58,142 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 10:43:58,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:43:58,143 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 195 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:58,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 344 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:43:58,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 10:43:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 255. [2023-11-26 10:43:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.69364161849711) internal successors, (293), 232 states have internal predecessors, (293), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 333 transitions. [2023-11-26 10:43:58,161 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 333 transitions. Word has length 61 [2023-11-26 10:43:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:58,162 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 333 transitions. [2023-11-26 10:43:58,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:43:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 333 transitions. [2023-11-26 10:43:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 10:43:58,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:58,163 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:58,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:58,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 10:43:58,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:58,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1914078964, now seen corresponding path program 1 times [2023-11-26 10:43:58,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:58,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96297934] [2023-11-26 10:43:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:58,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:58,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329012721] [2023-11-26 10:43:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:58,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:58,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:58,382 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:58,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 10:43:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:58,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:43:58,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 10:43:58,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:58,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96297934] [2023-11-26 10:43:58,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:58,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329012721] [2023-11-26 10:43:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329012721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:58,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:58,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 10:43:58,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352143116] [2023-11-26 10:43:58,690 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:58,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:58,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:58,692 INFO L87 Difference]: Start difference. First operand 255 states and 333 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:43:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:59,287 INFO L93 Difference]: Finished difference Result 293 states and 342 transitions. [2023-11-26 10:43:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:43:59,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2023-11-26 10:43:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:59,289 INFO L225 Difference]: With dead ends: 293 [2023-11-26 10:43:59,290 INFO L226 Difference]: Without dead ends: 291 [2023-11-26 10:43:59,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:43:59,290 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 316 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:59,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 328 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:43:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-26 10:43:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 255. [2023-11-26 10:43:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.670520231213873) internal successors, (289), 232 states have internal predecessors, (289), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 329 transitions. [2023-11-26 10:43:59,308 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 329 transitions. Word has length 62 [2023-11-26 10:43:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:59,308 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 329 transitions. [2023-11-26 10:43:59,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:43:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 329 transitions. [2023-11-26 10:43:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-26 10:43:59,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:59,310 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:59,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 10:43:59,516 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:43:59,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash -793094161, now seen corresponding path program 1 times [2023-11-26 10:43:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:59,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898260056] [2023-11-26 10:43:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:59,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:59,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782450835] [2023-11-26 10:43:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:59,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:59,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:59,534 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:59,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 10:43:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:59,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:43:59,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 10:43:59,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 10:43:59,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:59,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898260056] [2023-11-26 10:43:59,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:59,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782450835] [2023-11-26 10:43:59,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782450835] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:59,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:59,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 10:43:59,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073527744] [2023-11-26 10:43:59,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:59,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:43:59,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:43:59,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:59,882 INFO L87 Difference]: Start difference. First operand 255 states and 329 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:02,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:02,201 INFO L93 Difference]: Finished difference Result 312 states and 358 transitions. [2023-11-26 10:44:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:44:02,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 63 [2023-11-26 10:44:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:02,204 INFO L225 Difference]: With dead ends: 312 [2023-11-26 10:44:02,204 INFO L226 Difference]: Without dead ends: 310 [2023-11-26 10:44:02,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:02,205 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 490 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:02,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 328 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 10:44:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-26 10:44:02,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 260. [2023-11-26 10:44:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 178 states have (on average 1.646067415730337) internal successors, (293), 236 states have internal predecessors, (293), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:44:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 335 transitions. [2023-11-26 10:44:02,224 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 335 transitions. Word has length 63 [2023-11-26 10:44:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:02,225 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 335 transitions. [2023-11-26 10:44:02,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:02,225 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 335 transitions. [2023-11-26 10:44:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 10:44:02,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:02,226 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:02,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 10:44:02,432 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:02,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:02,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1183884886, now seen corresponding path program 1 times [2023-11-26 10:44:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:02,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640113154] [2023-11-26 10:44:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:02,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:02,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:02,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746690739] [2023-11-26 10:44:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:02,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:02,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:02,443 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:02,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 10:44:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:02,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:44:02,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:02,766 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 10:44:02,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 10:44:03,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:03,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640113154] [2023-11-26 10:44:03,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:03,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746690739] [2023-11-26 10:44:03,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746690739] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:03,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:03,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 10:44:03,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691332443] [2023-11-26 10:44:03,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:03,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:44:03,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:03,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:44:03,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:44:03,022 INFO L87 Difference]: Start difference. First operand 260 states and 335 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-26 10:44:03,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:03,487 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2023-11-26 10:44:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:44:03,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 64 [2023-11-26 10:44:03,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:03,490 INFO L225 Difference]: With dead ends: 300 [2023-11-26 10:44:03,490 INFO L226 Difference]: Without dead ends: 297 [2023-11-26 10:44:03,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:03,492 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 298 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:03,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 398 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:44:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-26 10:44:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 257. [2023-11-26 10:44:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 178 states have (on average 1.6067415730337078) internal successors, (286), 233 states have internal predecessors, (286), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:44:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 328 transitions. [2023-11-26 10:44:03,512 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 328 transitions. Word has length 64 [2023-11-26 10:44:03,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:03,512 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 328 transitions. [2023-11-26 10:44:03,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 5 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-26 10:44:03,513 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 328 transitions. [2023-11-26 10:44:03,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 10:44:03,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:03,514 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:03,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:03,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 10:44:03,721 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:03,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:03,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1954274095, now seen corresponding path program 1 times [2023-11-26 10:44:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400415513] [2023-11-26 10:44:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:03,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332903427] [2023-11-26 10:44:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:03,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:03,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:03,741 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:03,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 10:44:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:03,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 10:44:03,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 10:44:04,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:12,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:12,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400415513] [2023-11-26 10:44:12,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:12,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332903427] [2023-11-26 10:44:12,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332903427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:12,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:12,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:44:12,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878660863] [2023-11-26 10:44:12,535 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:12,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:44:12,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:12,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:44:12,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2023-11-26 10:44:12,536 INFO L87 Difference]: Start difference. First operand 257 states and 328 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:44:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:13,553 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2023-11-26 10:44:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:44:13,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 65 [2023-11-26 10:44:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:13,556 INFO L225 Difference]: With dead ends: 289 [2023-11-26 10:44:13,556 INFO L226 Difference]: Without dead ends: 288 [2023-11-26 10:44:13,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=36, Invalid=94, Unknown=2, NotChecked=0, Total=132 [2023-11-26 10:44:13,557 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 364 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:13,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 195 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:44:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-26 10:44:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 257. [2023-11-26 10:44:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 178 states have (on average 1.595505617977528) internal successors, (284), 233 states have internal predecessors, (284), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:44:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 326 transitions. [2023-11-26 10:44:13,577 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 326 transitions. Word has length 65 [2023-11-26 10:44:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:13,578 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 326 transitions. [2023-11-26 10:44:13,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:44:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 326 transitions. [2023-11-26 10:44:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 10:44:13,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:13,579 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:13,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-26 10:44:13,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:13,785 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:13,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash -452954696, now seen corresponding path program 1 times [2023-11-26 10:44:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9095316] [2023-11-26 10:44:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:13,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:13,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452730233] [2023-11-26 10:44:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:13,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:13,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:13,797 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:13,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 10:44:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:13,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:44:13,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 10:44:14,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:14,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:14,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9095316] [2023-11-26 10:44:14,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:14,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452730233] [2023-11-26 10:44:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452730233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:14,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:14,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:44:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372255932] [2023-11-26 10:44:14,165 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:44:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:14,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:44:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:14,167 INFO L87 Difference]: Start difference. First operand 257 states and 326 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:44:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:14,900 INFO L93 Difference]: Finished difference Result 288 states and 335 transitions. [2023-11-26 10:44:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:44:14,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 66 [2023-11-26 10:44:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:14,903 INFO L225 Difference]: With dead ends: 288 [2023-11-26 10:44:14,903 INFO L226 Difference]: Without dead ends: 287 [2023-11-26 10:44:14,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:14,904 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 427 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:14,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 299 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:44:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-26 10:44:14,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 257. [2023-11-26 10:44:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 178 states have (on average 1.5842696629213484) internal successors, (282), 233 states have internal predecessors, (282), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:44:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 324 transitions. [2023-11-26 10:44:14,924 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 324 transitions. Word has length 66 [2023-11-26 10:44:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:14,924 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 324 transitions. [2023-11-26 10:44:14,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 10:44:14,925 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 324 transitions. [2023-11-26 10:44:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 10:44:14,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:14,926 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:14,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:15,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:15,132 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:15,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:15,133 INFO L85 PathProgramCache]: Analyzing trace with hash 449823759, now seen corresponding path program 1 times [2023-11-26 10:44:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:15,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189660884] [2023-11-26 10:44:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:15,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:15,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512123840] [2023-11-26 10:44:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:15,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:15,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:15,145 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:15,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 10:44:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:15,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:44:15,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 10:44:15,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:15,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:15,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189660884] [2023-11-26 10:44:15,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:15,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512123840] [2023-11-26 10:44:15,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512123840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:15,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:15,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:15,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068406004] [2023-11-26 10:44:15,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:15,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:15,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:15,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:15,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:15,263 INFO L87 Difference]: Start difference. First operand 257 states and 324 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 10:44:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:15,847 INFO L93 Difference]: Finished difference Result 287 states and 333 transitions. [2023-11-26 10:44:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:15,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2023-11-26 10:44:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:15,849 INFO L225 Difference]: With dead ends: 287 [2023-11-26 10:44:15,849 INFO L226 Difference]: Without dead ends: 283 [2023-11-26 10:44:15,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:15,850 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 51 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:15,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 217 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:44:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-26 10:44:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 260. [2023-11-26 10:44:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 181 states have (on average 1.5524861878453038) internal successors, (281), 236 states have internal predecessors, (281), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:44:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 323 transitions. [2023-11-26 10:44:15,869 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 323 transitions. Word has length 72 [2023-11-26 10:44:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:15,869 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 323 transitions. [2023-11-26 10:44:15,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 10:44:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 323 transitions. [2023-11-26 10:44:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-26 10:44:15,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:15,871 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:15,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:16,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-26 10:44:16,076 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:16,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:16,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1511060975, now seen corresponding path program 1 times [2023-11-26 10:44:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:16,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865926932] [2023-11-26 10:44:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:16,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:16,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798978211] [2023-11-26 10:44:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:16,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:16,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:16,087 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:16,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 10:44:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:44:16,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 10:44:16,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:16,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:16,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865926932] [2023-11-26 10:44:16,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:16,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798978211] [2023-11-26 10:44:16,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798978211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:16,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:16,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:16,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817403116] [2023-11-26 10:44:16,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:16,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:16,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:16,306 INFO L87 Difference]: Start difference. First operand 260 states and 323 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 10:44:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:16,446 INFO L93 Difference]: Finished difference Result 291 states and 335 transitions. [2023-11-26 10:44:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:16,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2023-11-26 10:44:16,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:16,449 INFO L225 Difference]: With dead ends: 291 [2023-11-26 10:44:16,449 INFO L226 Difference]: Without dead ends: 290 [2023-11-26 10:44:16,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:16,450 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 112 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:16,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 223 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-26 10:44:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 260. [2023-11-26 10:44:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 181 states have (on average 1.5414364640883977) internal successors, (279), 236 states have internal predecessors, (279), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:44:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 321 transitions. [2023-11-26 10:44:16,470 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 321 transitions. Word has length 74 [2023-11-26 10:44:16,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:16,471 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 321 transitions. [2023-11-26 10:44:16,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 10:44:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 321 transitions. [2023-11-26 10:44:16,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 10:44:16,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:16,472 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:16,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:16,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-26 10:44:16,679 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:16,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash 401750145, now seen corresponding path program 1 times [2023-11-26 10:44:16,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:16,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255848548] [2023-11-26 10:44:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:16,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:16,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:16,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475528934] [2023-11-26 10:44:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:16,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:16,690 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:16,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 10:44:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:44:16,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 10:44:16,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:16,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:16,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255848548] [2023-11-26 10:44:16,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:16,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475528934] [2023-11-26 10:44:16,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475528934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:16,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:16,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:16,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664181395] [2023-11-26 10:44:16,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:16,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:16,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:16,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:16,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:16,875 INFO L87 Difference]: Start difference. First operand 260 states and 321 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-26 10:44:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:17,112 INFO L93 Difference]: Finished difference Result 290 states and 333 transitions. [2023-11-26 10:44:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:44:17,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2023-11-26 10:44:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:17,115 INFO L225 Difference]: With dead ends: 290 [2023-11-26 10:44:17,115 INFO L226 Difference]: Without dead ends: 289 [2023-11-26 10:44:17,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:17,116 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 56 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:17,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 513 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:44:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-26 10:44:17,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 260. [2023-11-26 10:44:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 181 states have (on average 1.5303867403314917) internal successors, (277), 236 states have internal predecessors, (277), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:44:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 319 transitions. [2023-11-26 10:44:17,159 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 319 transitions. Word has length 75 [2023-11-26 10:44:17,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:17,159 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 319 transitions. [2023-11-26 10:44:17,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-26 10:44:17,160 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 319 transitions. [2023-11-26 10:44:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-26 10:44:17,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:17,161 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:17,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:17,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-26 10:44:17,368 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:17,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:17,368 INFO L85 PathProgramCache]: Analyzing trace with hash -430647277, now seen corresponding path program 1 times [2023-11-26 10:44:17,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:17,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098841838] [2023-11-26 10:44:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:17,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:17,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:17,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226321628] [2023-11-26 10:44:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:17,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:17,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:17,378 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:17,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 10:44:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:44:17,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 10:44:17,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:17,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:17,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098841838] [2023-11-26 10:44:17,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:17,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226321628] [2023-11-26 10:44:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226321628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:17,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:17,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:17,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883898478] [2023-11-26 10:44:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:17,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:17,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:17,530 INFO L87 Difference]: Start difference. First operand 260 states and 319 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 10:44:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:18,653 INFO L93 Difference]: Finished difference Result 281 states and 323 transitions. [2023-11-26 10:44:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:18,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2023-11-26 10:44:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:18,655 INFO L225 Difference]: With dead ends: 281 [2023-11-26 10:44:18,655 INFO L226 Difference]: Without dead ends: 279 [2023-11-26 10:44:18,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:18,656 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 62 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:18,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 315 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:44:18,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-26 10:44:18,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 260. [2023-11-26 10:44:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 181 states have (on average 1.5082872928176796) internal successors, (273), 236 states have internal predecessors, (273), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:44:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 315 transitions. [2023-11-26 10:44:18,678 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 315 transitions. Word has length 76 [2023-11-26 10:44:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:18,678 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 315 transitions. [2023-11-26 10:44:18,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 10:44:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 315 transitions. [2023-11-26 10:44:18,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 10:44:18,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:18,680 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:18,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:18,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 10:44:18,886 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:18,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -465163581, now seen corresponding path program 1 times [2023-11-26 10:44:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106674314] [2023-11-26 10:44:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:18,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:18,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872770686] [2023-11-26 10:44:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:18,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:18,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:18,899 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:18,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-26 10:44:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:44:18,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 10:44:19,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:19,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106674314] [2023-11-26 10:44:19,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872770686] [2023-11-26 10:44:19,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872770686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:19,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:19,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:19,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778782088] [2023-11-26 10:44:19,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:19,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:19,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:19,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:19,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:19,032 INFO L87 Difference]: Start difference. First operand 260 states and 315 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 10:44:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:20,140 INFO L93 Difference]: Finished difference Result 279 states and 319 transitions. [2023-11-26 10:44:20,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:20,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2023-11-26 10:44:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:20,142 INFO L225 Difference]: With dead ends: 279 [2023-11-26 10:44:20,142 INFO L226 Difference]: Without dead ends: 277 [2023-11-26 10:44:20,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:20,143 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 60 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:20,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 320 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:44:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-26 10:44:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 260. [2023-11-26 10:44:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 181 states have (on average 1.4861878453038675) internal successors, (269), 236 states have internal predecessors, (269), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:44:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 311 transitions. [2023-11-26 10:44:20,184 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 311 transitions. Word has length 77 [2023-11-26 10:44:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:20,185 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 311 transitions. [2023-11-26 10:44:20,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 10:44:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 311 transitions. [2023-11-26 10:44:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-26 10:44:20,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:20,193 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:20,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:20,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 10:44:20,399 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:20,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -57355895, now seen corresponding path program 1 times [2023-11-26 10:44:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:20,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152904220] [2023-11-26 10:44:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:20,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:20,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485077370] [2023-11-26 10:44:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:20,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:20,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:20,411 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:20,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-26 10:44:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:44:20,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 10:44:20,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 10:44:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152904220] [2023-11-26 10:44:21,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485077370] [2023-11-26 10:44:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485077370] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:21,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 10:44:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191632316] [2023-11-26 10:44:21,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:21,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:44:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:44:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:21,010 INFO L87 Difference]: Start difference. First operand 260 states and 311 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 6 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-26 10:44:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:21,609 INFO L93 Difference]: Finished difference Result 309 states and 342 transitions. [2023-11-26 10:44:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:44:21,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 6 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 83 [2023-11-26 10:44:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:21,611 INFO L225 Difference]: With dead ends: 309 [2023-11-26 10:44:21,611 INFO L226 Difference]: Without dead ends: 308 [2023-11-26 10:44:21,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:44:21,612 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 368 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:21,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 428 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:44:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-26 10:44:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 276. [2023-11-26 10:44:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 196 states have (on average 1.5051020408163265) internal successors, (295), 251 states have internal predecessors, (295), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 10:44:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 339 transitions. [2023-11-26 10:44:21,635 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 339 transitions. Word has length 83 [2023-11-26 10:44:21,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:21,635 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 339 transitions. [2023-11-26 10:44:21,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 6 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-26 10:44:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 339 transitions. [2023-11-26 10:44:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-26 10:44:21,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:21,637 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:21,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:21,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 10:44:21,843 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:21,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:21,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1778032613, now seen corresponding path program 1 times [2023-11-26 10:44:21,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:21,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047903778] [2023-11-26 10:44:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:21,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:21,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:21,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415334898] [2023-11-26 10:44:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:21,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:21,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:21,857 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:21,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 10:44:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:21,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 10:44:21,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:44:22,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047903778] [2023-11-26 10:44:23,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415334898] [2023-11-26 10:44:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415334898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:23,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:23,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-26 10:44:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632260439] [2023-11-26 10:44:23,095 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:23,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:44:23,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:23,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:44:23,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:44:23,096 INFO L87 Difference]: Start difference. First operand 276 states and 339 transitions. Second operand has 10 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-26 10:44:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:24,932 INFO L93 Difference]: Finished difference Result 288 states and 339 transitions. [2023-11-26 10:44:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:44:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 84 [2023-11-26 10:44:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:24,941 INFO L225 Difference]: With dead ends: 288 [2023-11-26 10:44:24,941 INFO L226 Difference]: Without dead ends: 285 [2023-11-26 10:44:24,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:44:24,942 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 394 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:24,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 184 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 10:44:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-26 10:44:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 276. [2023-11-26 10:44:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 196 states have (on average 1.4744897959183674) internal successors, (289), 251 states have internal predecessors, (289), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 10:44:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 333 transitions. [2023-11-26 10:44:24,966 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 333 transitions. Word has length 84 [2023-11-26 10:44:24,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:24,969 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 333 transitions. [2023-11-26 10:44:24,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-26 10:44:24,969 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 333 transitions. [2023-11-26 10:44:24,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-26 10:44:24,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:24,971 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:24,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:25,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 10:44:25,178 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:25,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash 715563979, now seen corresponding path program 1 times [2023-11-26 10:44:25,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:25,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272023650] [2023-11-26 10:44:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:25,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:25,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200917163] [2023-11-26 10:44:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:25,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:25,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:25,192 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:25,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-26 10:44:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:25,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:44:25,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 10:44:25,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:25,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:25,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272023650] [2023-11-26 10:44:25,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200917163] [2023-11-26 10:44:25,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200917163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:25,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:25,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 10:44:25,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459001448] [2023-11-26 10:44:25,924 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:25,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:44:25,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:44:25,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:25,927 INFO L87 Difference]: Start difference. First operand 276 states and 333 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-26 10:44:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:27,234 INFO L93 Difference]: Finished difference Result 285 states and 333 transitions. [2023-11-26 10:44:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:44:27,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 85 [2023-11-26 10:44:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:27,236 INFO L225 Difference]: With dead ends: 285 [2023-11-26 10:44:27,236 INFO L226 Difference]: Without dead ends: 284 [2023-11-26 10:44:27,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:27,237 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 191 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:27,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 398 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 10:44:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-26 10:44:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 276. [2023-11-26 10:44:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 196 states have (on average 1.4642857142857142) internal successors, (287), 251 states have internal predecessors, (287), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 10:44:27,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 331 transitions. [2023-11-26 10:44:27,260 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 331 transitions. Word has length 85 [2023-11-26 10:44:27,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:27,260 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 331 transitions. [2023-11-26 10:44:27,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-26 10:44:27,261 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 331 transitions. [2023-11-26 10:44:27,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-26 10:44:27,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:27,262 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:27,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 10:44:27,469 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:27,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1812574287, now seen corresponding path program 1 times [2023-11-26 10:44:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:27,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287014619] [2023-11-26 10:44:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:27,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:27,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:27,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595224211] [2023-11-26 10:44:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:27,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:27,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:27,484 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:27,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 10:44:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:27,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-26 10:44:27,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-26 10:44:29,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:30,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:30,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287014619] [2023-11-26 10:44:30,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595224211] [2023-11-26 10:44:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595224211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:30,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:30,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-26 10:44:30,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919396958] [2023-11-26 10:44:30,136 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:30,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:44:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:30,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:44:30,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:30,138 INFO L87 Difference]: Start difference. First operand 276 states and 331 transitions. Second operand has 11 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-26 10:44:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:31,277 INFO L93 Difference]: Finished difference Result 286 states and 333 transitions. [2023-11-26 10:44:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:44:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 89 [2023-11-26 10:44:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:31,280 INFO L225 Difference]: With dead ends: 286 [2023-11-26 10:44:31,281 INFO L226 Difference]: Without dead ends: 284 [2023-11-26 10:44:31,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:44:31,282 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 180 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:31,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 455 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:44:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-26 10:44:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 276. [2023-11-26 10:44:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 196 states have (on average 1.4438775510204083) internal successors, (283), 251 states have internal predecessors, (283), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 10:44:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 327 transitions. [2023-11-26 10:44:31,307 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 327 transitions. Word has length 89 [2023-11-26 10:44:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:31,308 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 327 transitions. [2023-11-26 10:44:31,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-26 10:44:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 327 transitions. [2023-11-26 10:44:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-26 10:44:31,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:31,310 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:31,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:31,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 10:44:31,516 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:31,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash 772495050, now seen corresponding path program 1 times [2023-11-26 10:44:31,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:31,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659908695] [2023-11-26 10:44:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:31,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:31,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900995110] [2023-11-26 10:44:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:31,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:31,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:31,533 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:31,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-26 10:44:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:44:31,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:31,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:31,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:31,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659908695] [2023-11-26 10:44:31,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:31,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900995110] [2023-11-26 10:44:31,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900995110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:31,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:31,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:31,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069179417] [2023-11-26 10:44:31,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:31,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:31,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:31,619 INFO L87 Difference]: Start difference. First operand 276 states and 327 transitions. Second operand has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-26 10:44:31,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:31,683 INFO L93 Difference]: Finished difference Result 276 states and 327 transitions. [2023-11-26 10:44:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:31,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 98 [2023-11-26 10:44:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:31,685 INFO L225 Difference]: With dead ends: 276 [2023-11-26 10:44:31,685 INFO L226 Difference]: Without dead ends: 275 [2023-11-26 10:44:31,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:31,687 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 42 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:31,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 235 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:31,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-26 10:44:31,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2023-11-26 10:44:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 196 states have (on average 1.4285714285714286) internal successors, (280), 250 states have internal predecessors, (280), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 10:44:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 324 transitions. [2023-11-26 10:44:31,711 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 324 transitions. Word has length 98 [2023-11-26 10:44:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:31,712 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 324 transitions. [2023-11-26 10:44:31,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-26 10:44:31,712 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 324 transitions. [2023-11-26 10:44:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-26 10:44:31,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:31,714 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:31,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:31,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:31,920 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:31,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash 963878354, now seen corresponding path program 1 times [2023-11-26 10:44:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:31,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745904058] [2023-11-26 10:44:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:31,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:31,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:31,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391407204] [2023-11-26 10:44:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:31,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:31,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:31,934 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:31,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-26 10:44:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:32,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:44:32,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-26 10:44:32,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:32,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:32,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745904058] [2023-11-26 10:44:32,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:32,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391407204] [2023-11-26 10:44:32,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391407204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:32,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:32,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:44:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148787692] [2023-11-26 10:44:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:32,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:32,118 INFO L87 Difference]: Start difference. First operand 275 states and 324 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 10:44:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:32,401 INFO L93 Difference]: Finished difference Result 284 states and 328 transitions. [2023-11-26 10:44:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:32,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2023-11-26 10:44:32,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:32,404 INFO L225 Difference]: With dead ends: 284 [2023-11-26 10:44:32,404 INFO L226 Difference]: Without dead ends: 283 [2023-11-26 10:44:32,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:32,405 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 12 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:32,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 494 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:44:32,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-26 10:44:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 276. [2023-11-26 10:44:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 197 states have (on average 1.4263959390862944) internal successors, (281), 251 states have internal predecessors, (281), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 10:44:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 325 transitions. [2023-11-26 10:44:32,430 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 325 transitions. Word has length 101 [2023-11-26 10:44:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:32,430 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 325 transitions. [2023-11-26 10:44:32,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 10:44:32,431 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 325 transitions. [2023-11-26 10:44:32,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-26 10:44:32,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:32,432 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:32,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:32,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:32,639 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:32,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash -184541926, now seen corresponding path program 1 times [2023-11-26 10:44:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:32,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452273081] [2023-11-26 10:44:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:32,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:32,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:32,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353105989] [2023-11-26 10:44:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:32,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:32,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:32,656 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:32,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-26 10:44:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:32,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 10:44:32,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 10:44:32,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 10:44:33,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452273081] [2023-11-26 10:44:33,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353105989] [2023-11-26 10:44:33,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353105989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:33,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:33,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-26 10:44:33,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859349911] [2023-11-26 10:44:33,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:33,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 10:44:33,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:44:33,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:44:33,147 INFO L87 Difference]: Start difference. First operand 276 states and 325 transitions. Second operand has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 9 states have internal predecessors, (108), 9 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2023-11-26 10:44:33,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:33,863 INFO L93 Difference]: Finished difference Result 446 states and 519 transitions. [2023-11-26 10:44:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:44:33,863 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 9 states have internal predecessors, (108), 9 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) Word has length 102 [2023-11-26 10:44:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:33,865 INFO L225 Difference]: With dead ends: 446 [2023-11-26 10:44:33,865 INFO L226 Difference]: Without dead ends: 281 [2023-11-26 10:44:33,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-11-26 10:44:33,867 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 573 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:33,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 418 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:44:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-26 10:44:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 276. [2023-11-26 10:44:33,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 197 states have (on average 1.4213197969543148) internal successors, (280), 251 states have internal predecessors, (280), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 10:44:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 324 transitions. [2023-11-26 10:44:33,891 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 324 transitions. Word has length 102 [2023-11-26 10:44:33,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:33,892 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 324 transitions. [2023-11-26 10:44:33,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 9 states have internal predecessors, (108), 9 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2023-11-26 10:44:33,892 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 324 transitions. [2023-11-26 10:44:33,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 10:44:33,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:33,894 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:33,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-26 10:44:34,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:34,100 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:44:34,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1653467349, now seen corresponding path program 1 times [2023-11-26 10:44:34,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:34,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454907824] [2023-11-26 10:44:34,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:34,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:34,110 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:34,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990206016] [2023-11-26 10:44:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:34,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:34,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:34,112 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:34,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4de7de6c-0f6f-4e22-a31e-c668b574172e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-26 10:44:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-26 10:44:34,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:34,692 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 10:44:34,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-26 10:44:35,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:35,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454907824] [2023-11-26 10:44:35,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:35,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990206016] [2023-11-26 10:44:35,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990206016] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:35,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:35,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-26 10:44:35,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287559348] [2023-11-26 10:44:35,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:35,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 10:44:35,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:35,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 10:44:35,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:44:35,421 INFO L87 Difference]: Start difference. First operand 276 states and 324 transitions. Second operand has 17 states, 16 states have (on average 7.375) internal successors, (118), 15 states have internal predecessors, (118), 9 states have call successors, (19), 1 states have call predecessors, (19), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20)