./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.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_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6a7b66d62d8261743d542694624b328b551f76289ee08b3039b7ca01c3c317e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:58:23,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:58:23,530 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:58:23,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:58:23,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:58:23,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:58:23,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:58:23,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:58:23,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:58:23,560 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:58:23,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:58:23,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:58:23,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:58:23,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:58:23,563 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:58:23,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:58:23,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:58:23,564 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:58:23,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:58:23,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:58:23,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:58:23,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:58:23,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:58:23,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:58:23,568 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:58:23,568 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:58:23,569 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:58:23,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:58:23,570 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:58:23,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:58:23,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:58:23,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:58:23,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:58:23,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:58:23,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:58:23,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:58:23,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:58:23,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:58:23,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:58:23,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:58:23,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:58:23,573 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:58:23,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:58:23,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:58:23,574 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_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a7b66d62d8261743d542694624b328b551f76289ee08b3039b7ca01c3c317e [2023-11-29 03:58:23,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:58:23,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:58:23,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:58:23,813 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:58:23,814 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:58:23,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c [2023-11-29 03:58:26,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:58:26,747 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:58:26,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c [2023-11-29 03:58:26,755 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/data/20137755a/204da07d37bf49319e76902985896991/FLAG2c2e1963f [2023-11-29 03:58:26,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/data/20137755a/204da07d37bf49319e76902985896991 [2023-11-29 03:58:26,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:58:26,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:58:26,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:58:26,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:58:26,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:58:26,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:58:26" (1/1) ... [2023-11-29 03:58:26,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62afef8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:26, skipping insertion in model container [2023-11-29 03:58:26,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:58:26" (1/1) ... [2023-11-29 03:58:26,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:58:26,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:58:26,985 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:58:27,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:58:27,021 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:58:27,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27 WrapperNode [2023-11-29 03:58:27,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:58:27,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:58:27,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:58:27,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:58:27,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,060 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-11-29 03:58:27,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:58:27,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:58:27,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:58:27,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:58:27,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,087 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]. [2023-11-29 03:58:27,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:58:27,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:58:27,100 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:58:27,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:58:27,101 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (1/1) ... [2023-11-29 03:58:27,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:58:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:27,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:58:27,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:58:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:58:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:58:27,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:58:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:58:27,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:58:27,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:58:27,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 03:58:27,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 03:58:27,235 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:58:27,237 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:58:27,546 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:58:27,570 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:58:27,571 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:58:27,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:58:27 BoogieIcfgContainer [2023-11-29 03:58:27,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:58:27,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:58:27,575 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:58:27,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:58:27,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:58:26" (1/3) ... [2023-11-29 03:58:27,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54720594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:58:27, skipping insertion in model container [2023-11-29 03:58:27,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:27" (2/3) ... [2023-11-29 03:58:27,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54720594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:58:27, skipping insertion in model container [2023-11-29 03:58:27,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:58:27" (3/3) ... [2023-11-29 03:58:27,581 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound20.c [2023-11-29 03:58:27,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:58:27,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-29 03:58:27,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:58:27,648 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;@27c49d0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:58:27,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-29 03:58:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 57 states have (on average 1.8771929824561404) internal successors, (107), 99 states have internal predecessors, (107), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:58:27,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 03:58:27,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:27,660 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:27,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:27,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:27,666 INFO L85 PathProgramCache]: Analyzing trace with hash -639812028, now seen corresponding path program 1 times [2023-11-29 03:58:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127671288] [2023-11-29 03:58:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:27,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:27,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127671288] [2023-11-29 03:58:27,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 03:58:27,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148748076] [2023-11-29 03:58:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:27,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:27,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:27,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:27,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:58:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:27,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:58:27,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:58:27,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:27,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148748076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:27,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:27,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:58:27,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497998541] [2023-11-29 03:58:27,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:27,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:58:27,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:58:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:58:27,908 INFO L87 Difference]: Start difference. First operand has 108 states, 57 states have (on average 1.8771929824561404) internal successors, (107), 99 states have internal predecessors, (107), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:58:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:27,942 INFO L93 Difference]: Finished difference Result 214 states and 241 transitions. [2023-11-29 03:58:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:58:27,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-29 03:58:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:27,952 INFO L225 Difference]: With dead ends: 214 [2023-11-29 03:58:27,953 INFO L226 Difference]: Without dead ends: 105 [2023-11-29 03:58:27,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:58:27,959 INFO L413 NwaCegarLoop]: 113 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, 113 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 [2023-11-29 03:58:27,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:58:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-29 03:58:28,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-11-29 03:58:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 56 states have (on average 1.8035714285714286) internal successors, (101), 97 states have internal predecessors, (101), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 03:58:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2023-11-29 03:58:28,023 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 20 [2023-11-29 03:58:28,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:28,023 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2023-11-29 03:58:28,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:58:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2023-11-29 03:58:28,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 03:58:28,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:28,026 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:28,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:28,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:28,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:28,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:28,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1469837050, now seen corresponding path program 1 times [2023-11-29 03:58:28,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:28,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617914227] [2023-11-29 03:58:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:28,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:28,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:28,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457220132] [2023-11-29 03:58:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:28,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:28,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:28,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:28,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:58:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:28,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:58:28,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:58:28,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:29,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:29,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617914227] [2023-11-29 03:58:29,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:29,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457220132] [2023-11-29 03:58:29,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457220132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:29,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:58:29,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 03:58:29,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053270111] [2023-11-29 03:58:29,038 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:29,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:58:29,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:29,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:58:29,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:58:29,040 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:58:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:29,385 INFO L93 Difference]: Finished difference Result 154 states and 167 transitions. [2023-11-29 03:58:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:58:29,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-29 03:58:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:29,388 INFO L225 Difference]: With dead ends: 154 [2023-11-29 03:58:29,389 INFO L226 Difference]: Without dead ends: 145 [2023-11-29 03:58:29,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:58:29,391 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 307 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:29,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 201 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:58:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-29 03:58:29,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2023-11-29 03:58:29,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.705128205128205) internal successors, (133), 117 states have internal predecessors, (133), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 03:58:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2023-11-29 03:58:29,410 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 20 [2023-11-29 03:58:29,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:29,412 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2023-11-29 03:58:29,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:58:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2023-11-29 03:58:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 03:58:29,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:29,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:29,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:58:29,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:29,615 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:29,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:29,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1679691756, now seen corresponding path program 1 times [2023-11-29 03:58:29,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:29,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470875807] [2023-11-29 03:58:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:29,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:29,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:29,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839292467] [2023-11-29 03:58:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:29,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:29,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:29,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:29,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:58:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:29,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:58:29,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:29,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:29,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:29,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470875807] [2023-11-29 03:58:29,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:29,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839292467] [2023-11-29 03:58:29,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839292467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:29,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:58:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078415436] [2023-11-29 03:58:29,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:29,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:58:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:58:29,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:58:29,805 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:58:30,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:30,140 INFO L93 Difference]: Finished difference Result 186 states and 213 transitions. [2023-11-29 03:58:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:58:30,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2023-11-29 03:58:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:30,142 INFO L225 Difference]: With dead ends: 186 [2023-11-29 03:58:30,142 INFO L226 Difference]: Without dead ends: 168 [2023-11-29 03:58:30,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:58:30,144 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 180 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:30,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 200 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:58:30,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-29 03:58:30,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2023-11-29 03:58:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 104 states have (on average 1.6153846153846154) internal successors, (168), 141 states have internal predecessors, (168), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:58:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 184 transitions. [2023-11-29 03:58:30,161 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 184 transitions. Word has length 21 [2023-11-29 03:58:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:30,161 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 184 transitions. [2023-11-29 03:58:30,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:58:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 184 transitions. [2023-11-29 03:58:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 03:58:30,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:30,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:30,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:58:30,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 03:58:30,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:30,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash 530836936, now seen corresponding path program 1 times [2023-11-29 03:58:30,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:30,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834722754] [2023-11-29 03:58:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:30,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:30,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:30,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365677070] [2023-11-29 03:58:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:30,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:30,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:30,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:30,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:58:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:30,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:58:30,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:58:30,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:30,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:30,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834722754] [2023-11-29 03:58:30,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:30,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365677070] [2023-11-29 03:58:30,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365677070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:30,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:58:30,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 03:58:30,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571108375] [2023-11-29 03:58:30,857 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:30,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:58:30,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:58:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:58:30,858 INFO L87 Difference]: Start difference. First operand 152 states and 184 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:58:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:31,432 INFO L93 Difference]: Finished difference Result 163 states and 191 transitions. [2023-11-29 03:58:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:58:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-11-29 03:58:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:31,435 INFO L225 Difference]: With dead ends: 163 [2023-11-29 03:58:31,435 INFO L226 Difference]: Without dead ends: 162 [2023-11-29 03:58:31,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:58:31,436 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 141 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:31,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 237 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:58:31,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-29 03:58:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 152. [2023-11-29 03:58:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 104 states have (on average 1.6057692307692308) internal successors, (167), 141 states have internal predecessors, (167), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:58:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2023-11-29 03:58:31,450 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 183 transitions. Word has length 22 [2023-11-29 03:58:31,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:31,450 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 183 transitions. [2023-11-29 03:58:31,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:58:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 183 transitions. [2023-11-29 03:58:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 03:58:31,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:31,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:31,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:58:31,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:31,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:31,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash -723924114, now seen corresponding path program 1 times [2023-11-29 03:58:31,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:31,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771004282] [2023-11-29 03:58:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:31,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:31,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:31,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636713618] [2023-11-29 03:58:31,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:31,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:31,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:31,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:31,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:58:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:31,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:58:31,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:31,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:31,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771004282] [2023-11-29 03:58:31,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:31,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636713618] [2023-11-29 03:58:31,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636713618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:31,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:31,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:31,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165718976] [2023-11-29 03:58:31,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:31,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:31,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:31,739 INFO L87 Difference]: Start difference. First operand 152 states and 183 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 03:58:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:32,153 INFO L93 Difference]: Finished difference Result 239 states and 275 transitions. [2023-11-29 03:58:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:32,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-11-29 03:58:32,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:32,156 INFO L225 Difference]: With dead ends: 239 [2023-11-29 03:58:32,156 INFO L226 Difference]: Without dead ends: 234 [2023-11-29 03:58:32,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:32,157 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 115 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:32,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 116 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:58:32,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-29 03:58:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 196. [2023-11-29 03:58:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 147 states have (on average 1.6666666666666667) internal successors, (245), 184 states have internal predecessors, (245), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 03:58:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 263 transitions. [2023-11-29 03:58:32,173 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 263 transitions. Word has length 23 [2023-11-29 03:58:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:32,174 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 263 transitions. [2023-11-29 03:58:32,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 03:58:32,174 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 263 transitions. [2023-11-29 03:58:32,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 03:58:32,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:32,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:32,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:58:32,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:32,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:32,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:32,376 INFO L85 PathProgramCache]: Analyzing trace with hash -966810998, now seen corresponding path program 1 times [2023-11-29 03:58:32,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447624523] [2023-11-29 03:58:32,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:32,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:32,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:32,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841331213] [2023-11-29 03:58:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:32,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:32,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:32,389 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:32,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:58:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:32,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:58:32,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:32,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:32,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:32,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447624523] [2023-11-29 03:58:32,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:32,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841331213] [2023-11-29 03:58:32,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841331213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:32,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:32,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422451097] [2023-11-29 03:58:32,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:32,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:32,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:32,451 INFO L87 Difference]: Start difference. First operand 196 states and 263 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 03:58:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:33,091 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2023-11-29 03:58:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:33,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-29 03:58:33,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:33,094 INFO L225 Difference]: With dead ends: 310 [2023-11-29 03:58:33,094 INFO L226 Difference]: Without dead ends: 309 [2023-11-29 03:58:33,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:33,095 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 77 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:33,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 167 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:58:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-29 03:58:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 219. [2023-11-29 03:58:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 169 states have (on average 1.650887573964497) internal successors, (279), 206 states have internal predecessors, (279), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 03:58:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 299 transitions. [2023-11-29 03:58:33,111 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 299 transitions. Word has length 24 [2023-11-29 03:58:33,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:33,111 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 299 transitions. [2023-11-29 03:58:33,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 03:58:33,111 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 299 transitions. [2023-11-29 03:58:33,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 03:58:33,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:33,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:33,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:33,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:33,315 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:33,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash 93630192, now seen corresponding path program 1 times [2023-11-29 03:58:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:33,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891647564] [2023-11-29 03:58:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:33,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:33,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:33,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889534716] [2023-11-29 03:58:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:33,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:33,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:33,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:33,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:58:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:33,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:58:33,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:33,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:33,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:33,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891647564] [2023-11-29 03:58:33,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:33,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889534716] [2023-11-29 03:58:33,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889534716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:33,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:33,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:33,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58239563] [2023-11-29 03:58:33,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:33,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:33,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:33,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:33,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:33,398 INFO L87 Difference]: Start difference. First operand 219 states and 299 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 03:58:34,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:34,723 INFO L93 Difference]: Finished difference Result 309 states and 396 transitions. [2023-11-29 03:58:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:34,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-29 03:58:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:34,726 INFO L225 Difference]: With dead ends: 309 [2023-11-29 03:58:34,726 INFO L226 Difference]: Without dead ends: 308 [2023-11-29 03:58:34,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:34,727 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 74 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:34,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 170 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 03:58:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-29 03:58:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 219. [2023-11-29 03:58:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 169 states have (on average 1.6390532544378698) internal successors, (277), 206 states have internal predecessors, (277), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 03:58:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 297 transitions. [2023-11-29 03:58:34,737 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 297 transitions. Word has length 25 [2023-11-29 03:58:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:34,737 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 297 transitions. [2023-11-29 03:58:34,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 03:58:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 297 transitions. [2023-11-29 03:58:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 03:58:34,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:34,738 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:34,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:58:34,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:34,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:34,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash 591387408, now seen corresponding path program 1 times [2023-11-29 03:58:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:34,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531184262] [2023-11-29 03:58:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:34,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:34,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342926778] [2023-11-29 03:58:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:34,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:34,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:34,956 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:34,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:58:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:34,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:58:34,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:58:35,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:35,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531184262] [2023-11-29 03:58:35,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342926778] [2023-11-29 03:58:35,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342926778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:35,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:35,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:58:35,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729495470] [2023-11-29 03:58:35,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:35,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:58:35,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:35,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:58:35,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:58:35,081 INFO L87 Difference]: Start difference. First operand 219 states and 297 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:35,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:35,332 INFO L93 Difference]: Finished difference Result 235 states and 302 transitions. [2023-11-29 03:58:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:58:35,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-29 03:58:35,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:35,335 INFO L225 Difference]: With dead ends: 235 [2023-11-29 03:58:35,335 INFO L226 Difference]: Without dead ends: 234 [2023-11-29 03:58:35,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:58:35,336 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 164 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:35,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 227 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:35,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-29 03:58:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 219. [2023-11-29 03:58:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 169 states have (on average 1.6331360946745561) internal successors, (276), 206 states have internal predecessors, (276), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 03:58:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 296 transitions. [2023-11-29 03:58:35,349 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 296 transitions. Word has length 38 [2023-11-29 03:58:35,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:35,349 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 296 transitions. [2023-11-29 03:58:35,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 296 transitions. [2023-11-29 03:58:35,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 03:58:35,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:35,351 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:35,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:58:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:35,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:35,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1166531614, now seen corresponding path program 1 times [2023-11-29 03:58:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:35,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136860861] [2023-11-29 03:58:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:35,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:35,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32238001] [2023-11-29 03:58:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:35,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:35,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:35,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:35,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:58:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:35,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:58:35,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:58:35,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:35,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:35,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136860861] [2023-11-29 03:58:35,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:35,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32238001] [2023-11-29 03:58:35,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32238001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:35,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:58:35,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 03:58:35,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070992560] [2023-11-29 03:58:35,840 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:35,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:58:35,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:35,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:58:35,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:58:35,842 INFO L87 Difference]: Start difference. First operand 219 states and 296 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:36,469 INFO L93 Difference]: Finished difference Result 252 states and 345 transitions. [2023-11-29 03:58:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:58:36,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2023-11-29 03:58:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:36,471 INFO L225 Difference]: With dead ends: 252 [2023-11-29 03:58:36,471 INFO L226 Difference]: Without dead ends: 247 [2023-11-29 03:58:36,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:58:36,473 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 159 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:36,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 130 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:58:36,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-29 03:58:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 210. [2023-11-29 03:58:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 165 states have (on average 1.5515151515151515) internal successors, (256), 197 states have internal predecessors, (256), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 03:58:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 276 transitions. [2023-11-29 03:58:36,486 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 276 transitions. Word has length 39 [2023-11-29 03:58:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:36,486 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 276 transitions. [2023-11-29 03:58:36,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 276 transitions. [2023-11-29 03:58:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 03:58:36,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:36,488 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:36,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:58:36,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:36,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:36,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:36,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1153140560, now seen corresponding path program 1 times [2023-11-29 03:58:36,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:36,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241312716] [2023-11-29 03:58:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:36,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:36,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:36,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677495311] [2023-11-29 03:58:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:36,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:36,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:36,707 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:36,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:58:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:36,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:58:36,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:36,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:36,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:36,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241312716] [2023-11-29 03:58:36,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:36,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677495311] [2023-11-29 03:58:36,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677495311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:36,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:36,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:36,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629445805] [2023-11-29 03:58:36,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:36,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:36,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:36,838 INFO L87 Difference]: Start difference. First operand 210 states and 276 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:37,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:37,269 INFO L93 Difference]: Finished difference Result 240 states and 276 transitions. [2023-11-29 03:58:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:37,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2023-11-29 03:58:37,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:37,271 INFO L225 Difference]: With dead ends: 240 [2023-11-29 03:58:37,271 INFO L226 Difference]: Without dead ends: 236 [2023-11-29 03:58:37,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:37,272 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 202 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:37,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 88 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:58:37,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-29 03:58:37,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 207. [2023-11-29 03:58:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 194 states have internal predecessors, (248), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 03:58:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 268 transitions. [2023-11-29 03:58:37,284 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 268 transitions. Word has length 39 [2023-11-29 03:58:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:37,284 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 268 transitions. [2023-11-29 03:58:37,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:37,284 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 268 transitions. [2023-11-29 03:58:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 03:58:37,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:37,285 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:37,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:58:37,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:58:37,486 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:37,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1802741779, now seen corresponding path program 1 times [2023-11-29 03:58:37,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:37,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422694950] [2023-11-29 03:58:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:37,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:37,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:37,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729598266] [2023-11-29 03:58:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:37,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:37,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:37,498 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:37,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:58:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:37,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:58:37,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:58:37,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:37,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:37,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422694950] [2023-11-29 03:58:37,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:37,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729598266] [2023-11-29 03:58:37,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729598266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:37,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:58:37,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 03:58:37,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644485816] [2023-11-29 03:58:37,800 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:37,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:58:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:37,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:58:37,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:58:37,801 INFO L87 Difference]: Start difference. First operand 207 states and 268 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:38,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:38,437 INFO L93 Difference]: Finished difference Result 250 states and 291 transitions. [2023-11-29 03:58:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:58:38,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 40 [2023-11-29 03:58:38,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:38,439 INFO L225 Difference]: With dead ends: 250 [2023-11-29 03:58:38,439 INFO L226 Difference]: Without dead ends: 246 [2023-11-29 03:58:38,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:58:38,440 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 239 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:38,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 161 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:58:38,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-29 03:58:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 207. [2023-11-29 03:58:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 162 states have (on average 1.5061728395061729) internal successors, (244), 194 states have internal predecessors, (244), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 03:58:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 264 transitions. [2023-11-29 03:58:38,452 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 264 transitions. Word has length 40 [2023-11-29 03:58:38,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:38,452 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 264 transitions. [2023-11-29 03:58:38,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 264 transitions. [2023-11-29 03:58:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 03:58:38,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:38,453 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:38,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:58:38,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 03:58:38,659 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:38,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:38,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1387619090, now seen corresponding path program 1 times [2023-11-29 03:58:38,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:38,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214079945] [2023-11-29 03:58:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:38,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:38,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:38,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173535311] [2023-11-29 03:58:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:38,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:38,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:38,668 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:38,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:58:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:38,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:58:38,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:38,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:38,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214079945] [2023-11-29 03:58:38,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173535311] [2023-11-29 03:58:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173535311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:38,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:38,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973198115] [2023-11-29 03:58:38,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:38,738 INFO L87 Difference]: Start difference. First operand 207 states and 264 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:39,269 INFO L93 Difference]: Finished difference Result 295 states and 360 transitions. [2023-11-29 03:58:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:39,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-11-29 03:58:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:39,272 INFO L225 Difference]: With dead ends: 295 [2023-11-29 03:58:39,272 INFO L226 Difference]: Without dead ends: 294 [2023-11-29 03:58:39,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:39,272 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 64 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:39,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 193 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:58:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-29 03:58:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 219. [2023-11-29 03:58:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 174 states have (on average 1.5) internal successors, (261), 206 states have internal predecessors, (261), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 03:58:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 281 transitions. [2023-11-29 03:58:39,281 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 281 transitions. Word has length 40 [2023-11-29 03:58:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:39,281 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 281 transitions. [2023-11-29 03:58:39,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 281 transitions. [2023-11-29 03:58:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 03:58:39,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:39,282 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:39,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:58:39,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 03:58:39,483 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:39,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:39,483 INFO L85 PathProgramCache]: Analyzing trace with hash 464588800, now seen corresponding path program 1 times [2023-11-29 03:58:39,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:39,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893762753] [2023-11-29 03:58:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:39,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:39,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:39,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993240003] [2023-11-29 03:58:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:39,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:39,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:39,492 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:39,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:58:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:39,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:58:39,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:39,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:39,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893762753] [2023-11-29 03:58:39,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:39,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993240003] [2023-11-29 03:58:39,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993240003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:39,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:39,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:58:39,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217220396] [2023-11-29 03:58:39,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:39,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:58:39,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:39,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:58:39,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:58:39,637 INFO L87 Difference]: Start difference. First operand 219 states and 281 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:41,067 INFO L93 Difference]: Finished difference Result 427 states and 547 transitions. [2023-11-29 03:58:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:58:41,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2023-11-29 03:58:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:41,069 INFO L225 Difference]: With dead ends: 427 [2023-11-29 03:58:41,069 INFO L226 Difference]: Without dead ends: 422 [2023-11-29 03:58:41,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:58:41,070 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 340 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:41,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 90 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:58:41,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-29 03:58:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2023-11-29 03:58:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 270 states have (on average 1.5444444444444445) internal successors, (417), 302 states have internal predecessors, (417), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 03:58:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 443 transitions. [2023-11-29 03:58:41,084 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 443 transitions. Word has length 41 [2023-11-29 03:58:41,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:41,084 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 443 transitions. [2023-11-29 03:58:41,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 443 transitions. [2023-11-29 03:58:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 03:58:41,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:41,086 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:41,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:41,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:58:41,286 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:41,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash 50420416, now seen corresponding path program 1 times [2023-11-29 03:58:41,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:41,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918676078] [2023-11-29 03:58:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:41,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:41,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:41,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599553944] [2023-11-29 03:58:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:41,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:41,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:41,297 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:41,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:58:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:41,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:58:41,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:41,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:41,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:41,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918676078] [2023-11-29 03:58:41,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:41,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599553944] [2023-11-29 03:58:41,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599553944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:41,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:41,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32757450] [2023-11-29 03:58:41,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:41,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:41,378 INFO L87 Difference]: Start difference. First operand 318 states and 443 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:41,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:41,801 INFO L93 Difference]: Finished difference Result 375 states and 494 transitions. [2023-11-29 03:58:41,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:41,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-11-29 03:58:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:41,803 INFO L225 Difference]: With dead ends: 375 [2023-11-29 03:58:41,803 INFO L226 Difference]: Without dead ends: 374 [2023-11-29 03:58:41,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:41,804 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 54 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:41,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 203 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:58:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-29 03:58:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 329. [2023-11-29 03:58:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 281 states have (on average 1.5338078291814947) internal successors, (431), 313 states have internal predecessors, (431), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 03:58:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 457 transitions. [2023-11-29 03:58:41,819 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 457 transitions. Word has length 41 [2023-11-29 03:58:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:41,819 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 457 transitions. [2023-11-29 03:58:41,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 457 transitions. [2023-11-29 03:58:41,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 03:58:41,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:41,820 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:41,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:58:42,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:58:42,021 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:42,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash 66518930, now seen corresponding path program 1 times [2023-11-29 03:58:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:42,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106951436] [2023-11-29 03:58:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:42,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:42,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555898526] [2023-11-29 03:58:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:42,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:42,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:42,031 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:42,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:58:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:42,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:58:42,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:42,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:42,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:42,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106951436] [2023-11-29 03:58:42,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:42,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555898526] [2023-11-29 03:58:42,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555898526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:42,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:42,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:42,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093082024] [2023-11-29 03:58:42,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:42,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:42,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:42,109 INFO L87 Difference]: Start difference. First operand 329 states and 457 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:42,655 INFO L93 Difference]: Finished difference Result 374 states and 492 transitions. [2023-11-29 03:58:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:42,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-11-29 03:58:42,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:42,658 INFO L225 Difference]: With dead ends: 374 [2023-11-29 03:58:42,658 INFO L226 Difference]: Without dead ends: 373 [2023-11-29 03:58:42,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:42,659 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 53 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:42,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 196 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:58:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-29 03:58:42,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 331. [2023-11-29 03:58:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 283 states have (on average 1.530035335689046) internal successors, (433), 315 states have internal predecessors, (433), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 03:58:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 459 transitions. [2023-11-29 03:58:42,678 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 459 transitions. Word has length 41 [2023-11-29 03:58:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:42,679 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 459 transitions. [2023-11-29 03:58:42,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 459 transitions. [2023-11-29 03:58:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 03:58:42,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:42,680 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:42,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:58:42,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:58:42,880 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:42,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:42,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1517351043, now seen corresponding path program 1 times [2023-11-29 03:58:42,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:42,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415720118] [2023-11-29 03:58:42,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:42,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:42,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:42,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936132047] [2023-11-29 03:58:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:42,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:42,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:42,889 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:42,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:58:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:42,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:58:42,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:43,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:43,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415720118] [2023-11-29 03:58:43,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936132047] [2023-11-29 03:58:43,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936132047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:43,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:43,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:58:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843777466] [2023-11-29 03:58:43,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:43,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:58:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:43,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:58:43,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:58:43,031 INFO L87 Difference]: Start difference. First operand 331 states and 459 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:43,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:43,440 INFO L93 Difference]: Finished difference Result 360 states and 493 transitions. [2023-11-29 03:58:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:58:43,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2023-11-29 03:58:43,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:43,448 INFO L225 Difference]: With dead ends: 360 [2023-11-29 03:58:43,448 INFO L226 Difference]: Without dead ends: 352 [2023-11-29 03:58:43,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:58:43,449 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 224 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:43,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 88 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:58:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-29 03:58:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 323. [2023-11-29 03:58:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 283 states have (on average 1.4452296819787986) internal successors, (409), 307 states have internal predecessors, (409), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 03:58:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 435 transitions. [2023-11-29 03:58:43,469 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 435 transitions. Word has length 42 [2023-11-29 03:58:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:43,469 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 435 transitions. [2023-11-29 03:58:43,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:58:43,470 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 435 transitions. [2023-11-29 03:58:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 03:58:43,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:43,470 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 03:58:43,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:58:43,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:58:43,671 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:43,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1563033013, now seen corresponding path program 1 times [2023-11-29 03:58:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:43,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460909253] [2023-11-29 03:58:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:43,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:43,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:43,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956848312] [2023-11-29 03:58:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:43,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:43,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:43,682 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:43,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:58:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:43,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:58:43,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:58:43,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:43,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:43,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460909253] [2023-11-29 03:58:43,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:43,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956848312] [2023-11-29 03:58:43,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956848312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:43,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:43,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:43,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513262557] [2023-11-29 03:58:43,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:43,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:43,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:43,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:43,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:43,762 INFO L87 Difference]: Start difference. First operand 323 states and 435 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:44,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:44,259 INFO L93 Difference]: Finished difference Result 357 states and 462 transitions. [2023-11-29 03:58:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:44,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-29 03:58:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:44,262 INFO L225 Difference]: With dead ends: 357 [2023-11-29 03:58:44,262 INFO L226 Difference]: Without dead ends: 356 [2023-11-29 03:58:44,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:44,263 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 43 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:44,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 170 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:58:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-29 03:58:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 325. [2023-11-29 03:58:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 285 states have (on average 1.4421052631578948) internal successors, (411), 309 states have internal predecessors, (411), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 03:58:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 437 transitions. [2023-11-29 03:58:44,277 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 437 transitions. Word has length 42 [2023-11-29 03:58:44,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:44,277 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 437 transitions. [2023-11-29 03:58:44,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:58:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 437 transitions. [2023-11-29 03:58:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 03:58:44,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:44,278 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-29 03:58:44,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:58:44,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:58:44,480 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:44,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:44,480 INFO L85 PathProgramCache]: Analyzing trace with hash 352887974, now seen corresponding path program 1 times [2023-11-29 03:58:44,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:44,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819507347] [2023-11-29 03:58:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:44,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:44,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:44,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882797901] [2023-11-29 03:58:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:44,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:44,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:44,489 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:44,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:58:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:44,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:58:44,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:58:44,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:48,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:48,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819507347] [2023-11-29 03:58:48,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:48,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882797901] [2023-11-29 03:58:48,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882797901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:48,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:58:48,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 03:58:48,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674889507] [2023-11-29 03:58:48,151 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:48,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:58:48,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:48,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:58:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:58:48,153 INFO L87 Difference]: Start difference. First operand 325 states and 437 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 03:58:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:49,158 INFO L93 Difference]: Finished difference Result 453 states and 596 transitions. [2023-11-29 03:58:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:58:49,158 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 42 [2023-11-29 03:58:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:49,161 INFO L225 Difference]: With dead ends: 453 [2023-11-29 03:58:49,161 INFO L226 Difference]: Without dead ends: 436 [2023-11-29 03:58:49,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:58:49,162 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 216 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:49,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 186 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:58:49,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-29 03:58:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 409. [2023-11-29 03:58:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 365 states have (on average 1.4328767123287671) internal successors, (523), 389 states have internal predecessors, (523), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-29 03:58:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 557 transitions. [2023-11-29 03:58:49,188 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 557 transitions. Word has length 42 [2023-11-29 03:58:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:49,188 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 557 transitions. [2023-11-29 03:58:49,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 03:58:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 557 transitions. [2023-11-29 03:58:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 03:58:49,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:49,189 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-29 03:58:49,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:58:49,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:58:49,392 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:49,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1945374644, now seen corresponding path program 1 times [2023-11-29 03:58:49,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:49,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324872383] [2023-11-29 03:58:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:49,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:49,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083487775] [2023-11-29 03:58:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:49,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:49,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:49,402 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:49,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:58:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:49,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:58:49,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:58:49,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324872383] [2023-11-29 03:58:51,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:58:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083487775] [2023-11-29 03:58:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083487775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:51,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:58:51,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 03:58:51,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867785358] [2023-11-29 03:58:51,118 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:51,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:58:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:51,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:58:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:58:51,119 INFO L87 Difference]: Start difference. First operand 409 states and 557 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 03:58:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:52,446 INFO L93 Difference]: Finished difference Result 821 states and 1132 transitions. [2023-11-29 03:58:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:58:52,446 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 43 [2023-11-29 03:58:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:52,449 INFO L225 Difference]: With dead ends: 821 [2023-11-29 03:58:52,449 INFO L226 Difference]: Without dead ends: 616 [2023-11-29 03:58:52,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:58:52,451 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 369 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:52,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 112 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:58:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-11-29 03:58:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 472. [2023-11-29 03:58:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 431 states have (on average 1.4385150812064966) internal successors, (620), 450 states have internal predecessors, (620), 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) [2023-11-29 03:58:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 658 transitions. [2023-11-29 03:58:52,474 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 658 transitions. Word has length 43 [2023-11-29 03:58:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:52,474 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 658 transitions. [2023-11-29 03:58:52,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 03:58:52,475 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 658 transitions. [2023-11-29 03:58:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 03:58:52,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:52,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-29 03:58:52,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:58:52,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:52,676 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 03:58:52,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:52,676 INFO L85 PathProgramCache]: Analyzing trace with hash -177071768, now seen corresponding path program 1 times [2023-11-29 03:58:52,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:52,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767099802] [2023-11-29 03:58:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:52,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:58:52,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208452039] [2023-11-29 03:58:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:52,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:52,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:52,684 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:52,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 03:58:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:52,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 03:58:52,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:58:53,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:59:41,347 WARN L293 SmtUtils]: Spent 40.71s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:59:59,532 WARN L293 SmtUtils]: Spent 12.32s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:00:07,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767099802] [2023-11-29 04:00:07,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208452039] [2023-11-29 04:00:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208452039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:07,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:00:07,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 04:00:07,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631386554] [2023-11-29 04:00:07,156 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:07,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:00:07,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:00:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=221, Unknown=1, NotChecked=0, Total=306 [2023-11-29 04:00:07,157 INFO L87 Difference]: Start difference. First operand 472 states and 658 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:00:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:07,828 INFO L93 Difference]: Finished difference Result 514 states and 686 transitions. [2023-11-29 04:00:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:00:07,828 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2023-11-29 04:00:07,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:07,830 INFO L225 Difference]: With dead ends: 514 [2023-11-29 04:00:07,830 INFO L226 Difference]: Without dead ends: 512 [2023-11-29 04:00:07,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 69.0s TimeCoverageRelationStatistics Valid=204, Invalid=445, Unknown=1, NotChecked=0, Total=650 [2023-11-29 04:00:07,831 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 302 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:07,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 154 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:00:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-29 04:00:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 453. [2023-11-29 04:00:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 413 states have (on average 1.4188861985472154) internal successors, (586), 432 states have internal predecessors, (586), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 04:00:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 622 transitions. [2023-11-29 04:00:07,861 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 622 transitions. Word has length 44 [2023-11-29 04:00:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:07,861 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 622 transitions. [2023-11-29 04:00:07,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:00:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 622 transitions. [2023-11-29 04:00:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:00:07,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:07,862 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 04:00:07,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 04:00:08,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:08,063 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:08,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:08,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1125736252, now seen corresponding path program 1 times [2023-11-29 04:00:08,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:08,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906751010] [2023-11-29 04:00:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:08,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:08,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:08,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452053167] [2023-11-29 04:00:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:08,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:08,072 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:08,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:00:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:08,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:00:08,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:08,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:08,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:08,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906751010] [2023-11-29 04:00:08,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:08,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452053167] [2023-11-29 04:00:08,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452053167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:08,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:08,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 04:00:08,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736004652] [2023-11-29 04:00:08,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:08,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:00:08,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:08,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:00:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:00:08,512 INFO L87 Difference]: Start difference. First operand 453 states and 622 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 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) [2023-11-29 04:00:14,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:00:15,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:15,905 INFO L93 Difference]: Finished difference Result 1039 states and 1376 transitions. [2023-11-29 04:00:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:00:15,906 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 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 45 [2023-11-29 04:00:15,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:15,910 INFO L225 Difference]: With dead ends: 1039 [2023-11-29 04:00:15,911 INFO L226 Difference]: Without dead ends: 1032 [2023-11-29 04:00:15,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:00:15,912 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1024 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:15,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 157 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 935 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2023-11-29 04:00:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2023-11-29 04:00:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 570. [2023-11-29 04:00:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 524 states have (on average 1.400763358778626) internal successors, (734), 543 states have internal predecessors, (734), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 04:00:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 782 transitions. [2023-11-29 04:00:15,947 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 782 transitions. Word has length 45 [2023-11-29 04:00:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:15,947 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 782 transitions. [2023-11-29 04:00:15,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 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) [2023-11-29 04:00:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 782 transitions. [2023-11-29 04:00:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:00:15,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:15,948 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2023-11-29 04:00:15,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 04:00:16,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:16,149 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:16,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1194257458, now seen corresponding path program 1 times [2023-11-29 04:00:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:16,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897164710] [2023-11-29 04:00:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:16,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:16,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:16,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019144900] [2023-11-29 04:00:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:16,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:16,158 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:16,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 04:00:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:16,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:00:16,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:16,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:19,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897164710] [2023-11-29 04:00:19,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:19,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019144900] [2023-11-29 04:00:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019144900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:19,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:00:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 04:00:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422687750] [2023-11-29 04:00:19,576 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:19,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:00:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:00:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:00:19,577 INFO L87 Difference]: Start difference. First operand 570 states and 782 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:00:20,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:20,315 INFO L93 Difference]: Finished difference Result 772 states and 1031 transitions. [2023-11-29 04:00:20,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:00:20,315 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2023-11-29 04:00:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:20,318 INFO L225 Difference]: With dead ends: 772 [2023-11-29 04:00:20,318 INFO L226 Difference]: Without dead ends: 769 [2023-11-29 04:00:20,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:00:20,319 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 256 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:20,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 179 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:00:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-11-29 04:00:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 663. [2023-11-29 04:00:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 612 states have (on average 1.3986928104575163) internal successors, (856), 631 states have internal predecessors, (856), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 04:00:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 914 transitions. [2023-11-29 04:00:20,374 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 914 transitions. Word has length 45 [2023-11-29 04:00:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:20,375 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 914 transitions. [2023-11-29 04:00:20,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:00:20,375 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 914 transitions. [2023-11-29 04:00:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 04:00:20,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:20,376 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 04:00:20,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 04:00:20,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:20,576 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:20,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:20,577 INFO L85 PathProgramCache]: Analyzing trace with hash 499224870, now seen corresponding path program 1 times [2023-11-29 04:00:20,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:20,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008039501] [2023-11-29 04:00:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:20,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:20,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261140813] [2023-11-29 04:00:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:20,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:20,583 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:20,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 04:00:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:20,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:00:20,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:00:20,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:00:20,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:20,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008039501] [2023-11-29 04:00:20,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:20,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261140813] [2023-11-29 04:00:20,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261140813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:00:20,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:00:20,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:00:20,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128206559] [2023-11-29 04:00:20,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:00:20,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:00:20,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:20,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:00:20,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:00:20,674 INFO L87 Difference]: Start difference. First operand 663 states and 914 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:00:21,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:21,327 INFO L93 Difference]: Finished difference Result 692 states and 939 transitions. [2023-11-29 04:00:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:00:21,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-11-29 04:00:21,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:21,331 INFO L225 Difference]: With dead ends: 692 [2023-11-29 04:00:21,331 INFO L226 Difference]: Without dead ends: 691 [2023-11-29 04:00:21,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:00:21,332 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 27 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:21,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:00:21,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-11-29 04:00:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 683. [2023-11-29 04:00:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 632 states have (on average 1.3876582278481013) internal successors, (877), 651 states have internal predecessors, (877), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 04:00:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 935 transitions. [2023-11-29 04:00:21,369 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 935 transitions. Word has length 47 [2023-11-29 04:00:21,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:21,369 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 935 transitions. [2023-11-29 04:00:21,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:00:21,369 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 935 transitions. [2023-11-29 04:00:21,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 04:00:21,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:21,370 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2023-11-29 04:00:21,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 04:00:21,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:21,570 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:21,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:21,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2063309992, now seen corresponding path program 1 times [2023-11-29 04:00:21,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:21,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738252817] [2023-11-29 04:00:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:21,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:21,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:21,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834339674] [2023-11-29 04:00:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:21,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:21,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:21,579 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:21,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 04:00:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:21,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:00:21,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:22,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:00:22,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:22,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738252817] [2023-11-29 04:00:22,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:22,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834339674] [2023-11-29 04:00:22,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834339674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:00:22,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:00:22,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:00:22,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547448041] [2023-11-29 04:00:22,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:00:22,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:00:22,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:00:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:00:22,449 INFO L87 Difference]: Start difference. First operand 683 states and 935 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:00:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:23,828 INFO L93 Difference]: Finished difference Result 717 states and 973 transitions. [2023-11-29 04:00:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:00:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-11-29 04:00:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:23,832 INFO L225 Difference]: With dead ends: 717 [2023-11-29 04:00:23,832 INFO L226 Difference]: Without dead ends: 715 [2023-11-29 04:00:23,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:00:23,833 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 158 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:23,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 214 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:00:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-29 04:00:23,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 702. [2023-11-29 04:00:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 650 states have (on average 1.383076923076923) internal successors, (899), 669 states have internal predecessors, (899), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 04:00:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 959 transitions. [2023-11-29 04:00:23,871 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 959 transitions. Word has length 47 [2023-11-29 04:00:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:23,871 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 959 transitions. [2023-11-29 04:00:23,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:00:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 959 transitions. [2023-11-29 04:00:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 04:00:23,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:23,872 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 04:00:23,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 04:00:24,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:24,078 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:24,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:24,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1703898071, now seen corresponding path program 1 times [2023-11-29 04:00:24,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:24,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244095836] [2023-11-29 04:00:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:24,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:24,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:24,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582501666] [2023-11-29 04:00:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:24,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:24,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:24,086 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:24,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 04:00:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:24,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:00:24,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:00:24,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:00:24,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:24,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244095836] [2023-11-29 04:00:24,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:24,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582501666] [2023-11-29 04:00:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582501666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:00:24,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:00:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:00:24,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417450897] [2023-11-29 04:00:24,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:00:24,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:00:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:00:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:00:24,159 INFO L87 Difference]: Start difference. First operand 702 states and 959 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:00:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:24,571 INFO L93 Difference]: Finished difference Result 710 states and 961 transitions. [2023-11-29 04:00:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:00:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2023-11-29 04:00:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:24,574 INFO L225 Difference]: With dead ends: 710 [2023-11-29 04:00:24,574 INFO L226 Difference]: Without dead ends: 709 [2023-11-29 04:00:24,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:00:24,575 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 25 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:24,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 152 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:00:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2023-11-29 04:00:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 703. [2023-11-29 04:00:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 651 states have (on average 1.380952380952381) internal successors, (899), 670 states have internal predecessors, (899), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 04:00:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 959 transitions. [2023-11-29 04:00:24,613 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 959 transitions. Word has length 48 [2023-11-29 04:00:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:24,613 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 959 transitions. [2023-11-29 04:00:24,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:00:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 959 transitions. [2023-11-29 04:00:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 04:00:24,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:24,614 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2023-11-29 04:00:24,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 04:00:24,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:24,819 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:24,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1526397755, now seen corresponding path program 1 times [2023-11-29 04:00:24,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:24,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701175777] [2023-11-29 04:00:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:24,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:24,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:24,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189371218] [2023-11-29 04:00:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:24,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:24,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:24,828 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:24,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 04:00:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:24,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:00:24,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:25,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:30,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701175777] [2023-11-29 04:00:30,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189371218] [2023-11-29 04:00:30,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189371218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:30,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:00:30,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 04:00:30,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766498337] [2023-11-29 04:00:30,380 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:30,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:00:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:00:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2023-11-29 04:00:30,381 INFO L87 Difference]: Start difference. First operand 703 states and 959 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:00:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:33,017 INFO L93 Difference]: Finished difference Result 901 states and 1206 transitions. [2023-11-29 04:00:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:00:33,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2023-11-29 04:00:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:33,021 INFO L225 Difference]: With dead ends: 901 [2023-11-29 04:00:33,021 INFO L226 Difference]: Without dead ends: 899 [2023-11-29 04:00:33,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=88, Invalid=217, Unknown=1, NotChecked=0, Total=306 [2023-11-29 04:00:33,022 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 214 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:33,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 144 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 04:00:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2023-11-29 04:00:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 803. [2023-11-29 04:00:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 746 states have (on average 1.3699731903485255) internal successors, (1022), 765 states have internal predecessors, (1022), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:00:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1092 transitions. [2023-11-29 04:00:33,090 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1092 transitions. Word has length 48 [2023-11-29 04:00:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:33,090 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1092 transitions. [2023-11-29 04:00:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:00:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1092 transitions. [2023-11-29 04:00:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 04:00:33,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:33,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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] [2023-11-29 04:00:33,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 04:00:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:33,292 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:33,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 461899746, now seen corresponding path program 1 times [2023-11-29 04:00:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865608701] [2023-11-29 04:00:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:33,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:33,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:33,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774471438] [2023-11-29 04:00:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:33,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:33,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:33,300 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:33,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 04:00:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:33,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:00:33,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:33,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:35,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:35,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865608701] [2023-11-29 04:00:35,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:35,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774471438] [2023-11-29 04:00:35,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774471438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:35,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:00:35,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 04:00:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845268063] [2023-11-29 04:00:35,349 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:35,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:00:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:00:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:00:35,350 INFO L87 Difference]: Start difference. First operand 803 states and 1092 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:00:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:36,417 INFO L93 Difference]: Finished difference Result 1243 states and 1708 transitions. [2023-11-29 04:00:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:00:36,417 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 48 [2023-11-29 04:00:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:36,420 INFO L225 Difference]: With dead ends: 1243 [2023-11-29 04:00:36,420 INFO L226 Difference]: Without dead ends: 804 [2023-11-29 04:00:36,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:00:36,422 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 128 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:36,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 222 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:00:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2023-11-29 04:00:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 797. [2023-11-29 04:00:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 740 states have (on average 1.3689189189189188) internal successors, (1013), 759 states have internal predecessors, (1013), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:00:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1083 transitions. [2023-11-29 04:00:36,484 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1083 transitions. Word has length 48 [2023-11-29 04:00:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:36,484 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1083 transitions. [2023-11-29 04:00:36,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:00:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1083 transitions. [2023-11-29 04:00:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 04:00:36,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:36,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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] [2023-11-29 04:00:36,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 04:00:36,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:36,686 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:36,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash 73690207, now seen corresponding path program 1 times [2023-11-29 04:00:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:36,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108605863] [2023-11-29 04:00:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:36,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:36,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779342057] [2023-11-29 04:00:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:36,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:36,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:36,694 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:36,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 04:00:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:36,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:00:36,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:37,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:37,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108605863] [2023-11-29 04:00:37,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779342057] [2023-11-29 04:00:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779342057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:37,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:00:37,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 04:00:37,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620807039] [2023-11-29 04:00:37,265 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:37,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:00:37,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:00:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:00:37,265 INFO L87 Difference]: Start difference. First operand 797 states and 1083 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:00:38,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:38,176 INFO L93 Difference]: Finished difference Result 806 states and 1091 transitions. [2023-11-29 04:00:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:00:38,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2023-11-29 04:00:38,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:38,180 INFO L225 Difference]: With dead ends: 806 [2023-11-29 04:00:38,180 INFO L226 Difference]: Without dead ends: 805 [2023-11-29 04:00:38,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:00:38,181 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 260 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:38,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 201 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:00:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-11-29 04:00:38,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 797. [2023-11-29 04:00:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 740 states have (on average 1.3675675675675676) internal successors, (1012), 759 states have internal predecessors, (1012), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:00:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1082 transitions. [2023-11-29 04:00:38,222 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1082 transitions. Word has length 49 [2023-11-29 04:00:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:38,222 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1082 transitions. [2023-11-29 04:00:38,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:00:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1082 transitions. [2023-11-29 04:00:38,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 04:00:38,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:38,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-29 04:00:38,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-29 04:00:38,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:38,424 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:38,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:38,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1063504981, now seen corresponding path program 1 times [2023-11-29 04:00:38,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:38,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868714200] [2023-11-29 04:00:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:38,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:38,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:38,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356364377] [2023-11-29 04:00:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:38,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:38,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:38,432 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:38,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 04:00:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:38,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:00:38,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:38,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:38,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:38,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868714200] [2023-11-29 04:00:38,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:38,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356364377] [2023-11-29 04:00:38,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356364377] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:38,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:38,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2023-11-29 04:00:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511065282] [2023-11-29 04:00:38,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:38,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:00:38,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:00:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:00:38,862 INFO L87 Difference]: Start difference. First operand 797 states and 1082 transitions. Second operand has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 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) [2023-11-29 04:00:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:39,544 INFO L93 Difference]: Finished difference Result 930 states and 1276 transitions. [2023-11-29 04:00:39,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:00:39,544 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 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 50 [2023-11-29 04:00:39,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:39,548 INFO L225 Difference]: With dead ends: 930 [2023-11-29 04:00:39,548 INFO L226 Difference]: Without dead ends: 914 [2023-11-29 04:00:39,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-11-29 04:00:39,549 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 205 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:39,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 100 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:00:39,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-11-29 04:00:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 677. [2023-11-29 04:00:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 630 states have (on average 1.2984126984126985) internal successors, (818), 645 states have internal predecessors, (818), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 04:00:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 876 transitions. [2023-11-29 04:00:39,588 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 876 transitions. Word has length 50 [2023-11-29 04:00:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:39,588 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 876 transitions. [2023-11-29 04:00:39,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 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) [2023-11-29 04:00:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 876 transitions. [2023-11-29 04:00:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 04:00:39,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:39,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-29 04:00:39,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 04:00:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 04:00:39,789 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:39,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash 173931309, now seen corresponding path program 1 times [2023-11-29 04:00:39,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:39,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276375718] [2023-11-29 04:00:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:39,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:39,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:39,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564891158] [2023-11-29 04:00:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:39,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:39,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:39,796 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:39,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 04:00:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:39,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:00:39,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:40,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:41,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:41,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276375718] [2023-11-29 04:00:41,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:41,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564891158] [2023-11-29 04:00:41,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564891158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:41,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:00:41,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 04:00:41,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943742664] [2023-11-29 04:00:41,058 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:41,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:00:41,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:41,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:00:41,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:00:41,058 INFO L87 Difference]: Start difference. First operand 677 states and 876 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:00:41,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:41,491 INFO L93 Difference]: Finished difference Result 745 states and 965 transitions. [2023-11-29 04:00:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:00:41,492 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 52 [2023-11-29 04:00:41,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:41,496 INFO L225 Difference]: With dead ends: 745 [2023-11-29 04:00:41,496 INFO L226 Difference]: Without dead ends: 742 [2023-11-29 04:00:41,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:00:41,497 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 114 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:41,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 66 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:00:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-11-29 04:00:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 419. [2023-11-29 04:00:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 386 states have (on average 1.2487046632124352) internal successors, (482), 398 states have internal predecessors, (482), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 04:00:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 518 transitions. [2023-11-29 04:00:41,530 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 518 transitions. Word has length 52 [2023-11-29 04:00:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:41,531 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 518 transitions. [2023-11-29 04:00:41,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:00:41,531 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 518 transitions. [2023-11-29 04:00:41,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 04:00:41,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:41,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2023-11-29 04:00:41,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 04:00:41,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:41,732 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:41,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash -355734865, now seen corresponding path program 1 times [2023-11-29 04:00:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:41,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873756299] [2023-11-29 04:00:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:41,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:41,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:41,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846445037] [2023-11-29 04:00:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:41,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:41,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:41,739 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:41,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 04:00:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:41,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:00:41,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:42,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:47,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:47,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873756299] [2023-11-29 04:00:47,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846445037] [2023-11-29 04:00:47,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846445037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:47,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:00:47,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 04:00:47,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138349494] [2023-11-29 04:00:47,606 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:47,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:00:47,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:00:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=177, Unknown=1, NotChecked=0, Total=240 [2023-11-29 04:00:47,607 INFO L87 Difference]: Start difference. First operand 419 states and 518 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:00:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:49,304 INFO L93 Difference]: Finished difference Result 607 states and 756 transitions. [2023-11-29 04:00:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:00:49,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 54 [2023-11-29 04:00:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:49,307 INFO L225 Difference]: With dead ends: 607 [2023-11-29 04:00:49,307 INFO L226 Difference]: Without dead ends: 603 [2023-11-29 04:00:49,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=153, Invalid=352, Unknown=1, NotChecked=0, Total=506 [2023-11-29 04:00:49,308 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 246 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:49,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 72 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:00:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-11-29 04:00:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 317. [2023-11-29 04:00:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 293 states have (on average 1.1843003412969284) internal successors, (347), 301 states have internal predecessors, (347), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:00:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 373 transitions. [2023-11-29 04:00:49,329 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 373 transitions. Word has length 54 [2023-11-29 04:00:49,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:49,329 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 373 transitions. [2023-11-29 04:00:49,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:00:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 373 transitions. [2023-11-29 04:00:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:00:49,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:49,330 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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] [2023-11-29 04:00:49,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-29 04:00:49,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 04:00:49,530 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:49,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:49,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1857121131, now seen corresponding path program 1 times [2023-11-29 04:00:49,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:49,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352572472] [2023-11-29 04:00:49,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:49,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:49,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:49,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842055546] [2023-11-29 04:00:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:49,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:49,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:49,539 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:49,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 04:00:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:49,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:00:49,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:00:49,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:50,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352572472] [2023-11-29 04:00:50,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842055546] [2023-11-29 04:00:50,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842055546] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:50,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:00:50,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 04:00:50,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465034526] [2023-11-29 04:00:50,253 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:50,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:00:50,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:50,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:00:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:00:50,254 INFO L87 Difference]: Start difference. First operand 317 states and 373 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:00:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:51,446 INFO L93 Difference]: Finished difference Result 340 states and 400 transitions. [2023-11-29 04:00:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:00:51,447 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2023-11-29 04:00:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:51,449 INFO L225 Difference]: With dead ends: 340 [2023-11-29 04:00:51,449 INFO L226 Difference]: Without dead ends: 339 [2023-11-29 04:00:51,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:00:51,450 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 227 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:51,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 136 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:00:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-29 04:00:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 317. [2023-11-29 04:00:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 293 states have (on average 1.1843003412969284) internal successors, (347), 301 states have internal predecessors, (347), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:00:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 373 transitions. [2023-11-29 04:00:51,473 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 373 transitions. Word has length 55 [2023-11-29 04:00:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:51,473 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 373 transitions. [2023-11-29 04:00:51,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:00:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 373 transitions. [2023-11-29 04:00:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 04:00:51,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:51,474 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:00:51,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 04:00:51,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 04:00:51,674 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:51,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:51,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1624641456, now seen corresponding path program 1 times [2023-11-29 04:00:51,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:51,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363285963] [2023-11-29 04:00:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:51,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:51,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:51,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549730061] [2023-11-29 04:00:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:51,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:51,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:51,681 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:51,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 04:00:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:51,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:00:51,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:00:52,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:00:52,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:52,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363285963] [2023-11-29 04:00:52,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:52,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549730061] [2023-11-29 04:00:52,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549730061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:00:52,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:00:52,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:00:52,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686590443] [2023-11-29 04:00:52,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:00:52,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:00:52,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:52,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:00:52,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:00:52,456 INFO L87 Difference]: Start difference. First operand 317 states and 373 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:00:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:54,536 INFO L93 Difference]: Finished difference Result 667 states and 785 transitions. [2023-11-29 04:00:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:00:54,536 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 61 [2023-11-29 04:00:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:54,538 INFO L225 Difference]: With dead ends: 667 [2023-11-29 04:00:54,538 INFO L226 Difference]: Without dead ends: 488 [2023-11-29 04:00:54,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:00:54,539 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 243 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:54,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 247 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 04:00:54,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-29 04:00:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 437. [2023-11-29 04:00:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 408 states have (on average 1.1838235294117647) internal successors, (483), 416 states have internal predecessors, (483), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 04:00:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 519 transitions. [2023-11-29 04:00:54,574 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 519 transitions. Word has length 61 [2023-11-29 04:00:54,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:54,574 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 519 transitions. [2023-11-29 04:00:54,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:00:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 519 transitions. [2023-11-29 04:00:54,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 04:00:54,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:54,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:54,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 04:00:54,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 04:00:54,776 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:54,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1159623804, now seen corresponding path program 1 times [2023-11-29 04:00:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:54,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659434415] [2023-11-29 04:00:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:54,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:54,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:54,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471327301] [2023-11-29 04:00:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:54,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:54,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:54,783 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:54,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 04:00:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:54,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:00:54,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:00:54,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:00:54,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:54,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659434415] [2023-11-29 04:00:54,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:54,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471327301] [2023-11-29 04:00:54,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471327301] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:54,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:54,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 04:00:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617245449] [2023-11-29 04:00:54,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:54,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:00:54,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:00:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:00:54,906 INFO L87 Difference]: Start difference. First operand 437 states and 519 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 5 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 04:00:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:56,187 INFO L93 Difference]: Finished difference Result 1008 states and 1198 transitions. [2023-11-29 04:00:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:00:56,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 5 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 62 [2023-11-29 04:00:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:56,192 INFO L225 Difference]: With dead ends: 1008 [2023-11-29 04:00:56,192 INFO L226 Difference]: Without dead ends: 1007 [2023-11-29 04:00:56,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:00:56,192 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 285 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:56,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 172 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:00:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2023-11-29 04:00:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 979. [2023-11-29 04:00:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 933 states have (on average 1.1993569131832797) internal successors, (1119), 941 states have internal predecessors, (1119), 35 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-29 04:00:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1189 transitions. [2023-11-29 04:00:56,262 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1189 transitions. Word has length 62 [2023-11-29 04:00:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:56,263 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1189 transitions. [2023-11-29 04:00:56,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 5 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 04:00:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1189 transitions. [2023-11-29 04:00:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 04:00:56,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:56,263 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:00:56,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 04:00:56,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 04:00:56,464 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:56,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash -413925631, now seen corresponding path program 1 times [2023-11-29 04:00:56,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:56,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954333352] [2023-11-29 04:00:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:56,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:56,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:56,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119919329] [2023-11-29 04:00:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:56,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:56,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:56,471 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:56,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 04:00:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:56,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:00:56,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:00:56,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:00:56,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954333352] [2023-11-29 04:00:56,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119919329] [2023-11-29 04:00:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119919329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:00:56,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:00:56,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:00:56,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073996406] [2023-11-29 04:00:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:00:56,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:00:56,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:56,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:00:56,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:00:56,579 INFO L87 Difference]: Start difference. First operand 979 states and 1189 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:00:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:56,865 INFO L93 Difference]: Finished difference Result 1515 states and 1866 transitions. [2023-11-29 04:00:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:00:56,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2023-11-29 04:00:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:56,871 INFO L225 Difference]: With dead ends: 1515 [2023-11-29 04:00:56,871 INFO L226 Difference]: Without dead ends: 1069 [2023-11-29 04:00:56,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:00:56,872 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:56,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 100 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:00:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-11-29 04:00:56,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1051. [2023-11-29 04:00:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1000 states have (on average 1.199) internal successors, (1199), 1008 states have internal predecessors, (1199), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-29 04:00:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1279 transitions. [2023-11-29 04:00:56,959 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1279 transitions. Word has length 65 [2023-11-29 04:00:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:56,959 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1279 transitions. [2023-11-29 04:00:56,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:00:56,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1279 transitions. [2023-11-29 04:00:56,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 04:00:56,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:56,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:56,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 04:00:57,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 04:00:57,161 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:57,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash -445846490, now seen corresponding path program 1 times [2023-11-29 04:00:57,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:57,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272364759] [2023-11-29 04:00:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:57,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:57,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:57,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13944595] [2023-11-29 04:00:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:57,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:57,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:57,168 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:57,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 04:00:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:57,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:00:57,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:00:57,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:00:57,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:00:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272364759] [2023-11-29 04:00:57,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:00:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13944595] [2023-11-29 04:00:57,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13944595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:00:57,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:00:57,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:00:57,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954118528] [2023-11-29 04:00:57,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:00:57,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:00:57,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:00:57,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:00:57,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:00:57,298 INFO L87 Difference]: Start difference. First operand 1051 states and 1279 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:00:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:57,802 INFO L93 Difference]: Finished difference Result 1610 states and 1973 transitions. [2023-11-29 04:00:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:00:57,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2023-11-29 04:00:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:57,809 INFO L225 Difference]: With dead ends: 1610 [2023-11-29 04:00:57,809 INFO L226 Difference]: Without dead ends: 1099 [2023-11-29 04:00:57,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:00:57,810 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 12 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:57,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 147 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:00:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2023-11-29 04:00:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1048. [2023-11-29 04:00:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 998 states have (on average 1.1973947895791583) internal successors, (1195), 1006 states have internal predecessors, (1195), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 04:00:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1273 transitions. [2023-11-29 04:00:57,905 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1273 transitions. Word has length 66 [2023-11-29 04:00:57,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:57,905 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1273 transitions. [2023-11-29 04:00:57,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:00:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1273 transitions. [2023-11-29 04:00:57,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 04:00:57,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:57,907 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:57,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-29 04:00:58,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 04:00:58,107 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:00:58,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash -12856274, now seen corresponding path program 2 times [2023-11-29 04:00:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:00:58,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834608774] [2023-11-29 04:00:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:58,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:00:58,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:00:58,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687660438] [2023-11-29 04:00:58,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:00:58,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:00:58,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:00:58,116 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:00:58,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 04:00:58,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:00:58,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:00:58,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 04:00:58,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:00:58,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:01:23,370 WARN L293 SmtUtils]: Spent 13.41s on a formula simplification. DAG size of input: 53 DAG size of output: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:02:11,381 WARN L293 SmtUtils]: Spent 7.80s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:02:21,638 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:03:31,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:03:31,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834608774] [2023-11-29 04:03:31,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:03:31,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687660438] [2023-11-29 04:03:31,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687660438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:03:31,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:03:31,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-29 04:03:31,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243551771] [2023-11-29 04:03:31,834 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:03:31,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:03:31,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:03:31,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:03:31,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=678, Unknown=5, NotChecked=0, Total=870 [2023-11-29 04:03:31,836 INFO L87 Difference]: Start difference. First operand 1048 states and 1273 transitions. Second operand has 17 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 04:03:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:03:32,909 INFO L93 Difference]: Finished difference Result 1110 states and 1343 transitions. [2023-11-29 04:03:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:03:32,910 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 67 [2023-11-29 04:03:32,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:03:32,914 INFO L225 Difference]: With dead ends: 1110 [2023-11-29 04:03:32,914 INFO L226 Difference]: Without dead ends: 1109 [2023-11-29 04:03:32,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 46.8s TimeCoverageRelationStatistics Valid=390, Invalid=1245, Unknown=5, NotChecked=0, Total=1640 [2023-11-29 04:03:32,915 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 240 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:03:32,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 218 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:03:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2023-11-29 04:03:33,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1072. [2023-11-29 04:03:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1021 states have (on average 1.1939275220372183) internal successors, (1219), 1029 states have internal predecessors, (1219), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-29 04:03:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1299 transitions. [2023-11-29 04:03:33,002 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1299 transitions. Word has length 67 [2023-11-29 04:03:33,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:03:33,002 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1299 transitions. [2023-11-29 04:03:33,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 04:03:33,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1299 transitions. [2023-11-29 04:03:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 04:03:33,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:03:33,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:03:33,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 04:03:33,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 04:03:33,204 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:03:33,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:03:33,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1725613031, now seen corresponding path program 1 times [2023-11-29 04:03:33,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:03:33,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742230718] [2023-11-29 04:03:33,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:03:33,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:03:33,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:03:33,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148970607] [2023-11-29 04:03:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:03:33,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:03:33,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:03:33,213 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:03:33,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 04:03:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:03:33,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 04:03:33,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:03:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:03:33,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:03:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:03:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742230718] [2023-11-29 04:03:33,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:03:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148970607] [2023-11-29 04:03:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148970607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:03:33,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:03:33,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 04:03:33,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108329903] [2023-11-29 04:03:33,828 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:03:33,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:03:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:03:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:03:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:03:33,829 INFO L87 Difference]: Start difference. First operand 1072 states and 1299 transitions. Second operand has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 04:03:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:03:35,041 INFO L93 Difference]: Finished difference Result 1231 states and 1482 transitions. [2023-11-29 04:03:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:03:35,041 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 68 [2023-11-29 04:03:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:03:35,046 INFO L225 Difference]: With dead ends: 1231 [2023-11-29 04:03:35,046 INFO L226 Difference]: Without dead ends: 1227 [2023-11-29 04:03:35,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:03:35,047 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 303 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:03:35,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 294 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:03:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-11-29 04:03:35,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1169. [2023-11-29 04:03:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1114 states have (on average 1.1921005385996408) internal successors, (1328), 1122 states have internal predecessors, (1328), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 04:03:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1416 transitions. [2023-11-29 04:03:35,194 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1416 transitions. Word has length 68 [2023-11-29 04:03:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:03:35,195 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1416 transitions. [2023-11-29 04:03:35,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 04:03:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1416 transitions. [2023-11-29 04:03:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 04:03:35,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:03:35,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:03:35,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 04:03:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 04:03:35,397 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:03:35,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:03:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash -971008318, now seen corresponding path program 1 times [2023-11-29 04:03:35,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:03:35,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928827678] [2023-11-29 04:03:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:03:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:03:35,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:03:35,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976562591] [2023-11-29 04:03:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:03:35,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:03:35,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:03:35,404 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:03:35,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 04:03:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:03:35,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:03:35,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:03:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:03:36,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:04:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:04:01,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:04:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928827678] [2023-11-29 04:04:01,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:04:01,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976562591] [2023-11-29 04:04:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976562591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:04:01,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:04:01,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2023-11-29 04:04:01,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119749195] [2023-11-29 04:04:01,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:04:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 04:04:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:04:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 04:04:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:04:01,026 INFO L87 Difference]: Start difference. First operand 1169 states and 1416 transitions. Second operand has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 22 states have internal predecessors, (99), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:04:08,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:04:11,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:04:13,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:04:25,521 WARN L293 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 88 DAG size of output: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:04:34,675 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 97 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:04:58,596 WARN L293 SmtUtils]: Spent 12.30s on a formula simplification. DAG size of input: 102 DAG size of output: 93 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:05:01,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:05:17,960 WARN L293 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 84 DAG size of output: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:05:26,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:05:28,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:05:31,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:05:35,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:05:38,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:05:40,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:05:49,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:05:52,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:06:04,555 WARN L293 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 101 DAG size of output: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:06:05,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:06:08,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:06:11,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:06:14,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:06:16,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:06:21,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:06:25,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:06:28,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:06:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:29,730 INFO L93 Difference]: Finished difference Result 1415 states and 1721 transitions. [2023-11-29 04:06:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 04:06:29,731 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 22 states have internal predecessors, (99), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 70 [2023-11-29 04:06:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:29,736 INFO L225 Difference]: With dead ends: 1415 [2023-11-29 04:06:29,736 INFO L226 Difference]: Without dead ends: 1414 [2023-11-29 04:06:29,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 90.8s TimeCoverageRelationStatistics Valid=597, Invalid=2480, Unknown=3, NotChecked=0, Total=3080 [2023-11-29 04:06:29,737 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 555 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 98 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:29,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 215 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1615 Invalid, 3 Unknown, 0 Unchecked, 63.6s Time] [2023-11-29 04:06:29,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2023-11-29 04:06:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1201. [2023-11-29 04:06:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1146 states have (on average 1.1867364746945899) internal successors, (1360), 1154 states have internal predecessors, (1360), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 04:06:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1448 transitions. [2023-11-29 04:06:29,870 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1448 transitions. Word has length 70 [2023-11-29 04:06:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:29,870 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1448 transitions. [2023-11-29 04:06:29,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 22 states have internal predecessors, (99), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:06:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1448 transitions. [2023-11-29 04:06:29,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 04:06:29,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:29,871 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:06:29,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 04:06:30,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 04:06:30,071 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:06:30,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1672418430, now seen corresponding path program 2 times [2023-11-29 04:06:30,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:30,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253685636] [2023-11-29 04:06:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:30,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:06:30,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094194908] [2023-11-29 04:06:30,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:06:30,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:30,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:30,079 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:30,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 04:06:30,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:06:30,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:06:30,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:06:30,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:06:30,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:06:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:06:32,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:32,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253685636] [2023-11-29 04:06:32,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:06:32,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094194908] [2023-11-29 04:06:32,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094194908] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:06:32,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:06:32,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-11-29 04:06:32,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974616271] [2023-11-29 04:06:32,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:32,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:06:32,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:32,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:06:32,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:06:32,839 INFO L87 Difference]: Start difference. First operand 1201 states and 1448 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:06:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:39,753 INFO L93 Difference]: Finished difference Result 1344 states and 1622 transitions. [2023-11-29 04:06:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:06:39,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 70 [2023-11-29 04:06:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:39,759 INFO L225 Difference]: With dead ends: 1344 [2023-11-29 04:06:39,760 INFO L226 Difference]: Without dead ends: 1343 [2023-11-29 04:06:39,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:06:39,760 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 50 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:39,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 134 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-29 04:06:39,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2023-11-29 04:06:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1236. [2023-11-29 04:06:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1181 states have (on average 1.1761219305673158) internal successors, (1389), 1189 states have internal predecessors, (1389), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-29 04:06:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1477 transitions. [2023-11-29 04:06:39,926 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1477 transitions. Word has length 70 [2023-11-29 04:06:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:39,927 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1477 transitions. [2023-11-29 04:06:39,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:06:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1477 transitions. [2023-11-29 04:06:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 04:06:39,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:39,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:06:39,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 04:06:40,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 04:06:40,128 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:06:40,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash 901342733, now seen corresponding path program 1 times [2023-11-29 04:06:40,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:40,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725090456] [2023-11-29 04:06:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:40,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:40,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:06:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097254026] [2023-11-29 04:06:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:40,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:40,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:40,135 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:40,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 04:06:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:40,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:06:40,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:06:40,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:06:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:06:40,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:40,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725090456] [2023-11-29 04:06:40,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:06:40,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097254026] [2023-11-29 04:06:40,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097254026] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:06:40,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:06:40,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-11-29 04:06:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437617398] [2023-11-29 04:06:40,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:06:40,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:06:40,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:40,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:06:40,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:06:40,587 INFO L87 Difference]: Start difference. First operand 1236 states and 1477 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:06:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:43,081 INFO L93 Difference]: Finished difference Result 3344 states and 4074 transitions. [2023-11-29 04:06:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 04:06:43,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 71 [2023-11-29 04:06:43,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:43,091 INFO L225 Difference]: With dead ends: 3344 [2023-11-29 04:06:43,091 INFO L226 Difference]: Without dead ends: 2385 [2023-11-29 04:06:43,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=432, Invalid=1460, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 04:06:43,093 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 523 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:43,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 240 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 04:06:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2023-11-29 04:06:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2122. [2023-11-29 04:06:43,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2028 states have (on average 1.180966469428008) internal successors, (2395), 2036 states have internal predecessors, (2395), 83 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-29 04:06:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 2561 transitions. [2023-11-29 04:06:43,405 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 2561 transitions. Word has length 71 [2023-11-29 04:06:43,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:43,405 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 2561 transitions. [2023-11-29 04:06:43,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:06:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 2561 transitions. [2023-11-29 04:06:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 04:06:43,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:43,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:06:43,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 04:06:43,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-29 04:06:43,607 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:06:43,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:43,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1665663809, now seen corresponding path program 1 times [2023-11-29 04:06:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:43,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904466232] [2023-11-29 04:06:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:43,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:43,613 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:06:43,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239793925] [2023-11-29 04:06:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:43,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:43,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:43,614 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:43,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 04:06:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:43,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 04:06:43,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:06:44,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:06:48,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904466232] [2023-11-29 04:06:48,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:06:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239793925] [2023-11-29 04:06:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239793925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:06:48,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:06:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-29 04:06:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228439413] [2023-11-29 04:06:48,240 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:06:48,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:06:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:48,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:06:48,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:06:48,241 INFO L87 Difference]: Start difference. First operand 2122 states and 2561 transitions. Second operand has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 04:06:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:49,739 INFO L93 Difference]: Finished difference Result 2141 states and 2582 transitions. [2023-11-29 04:06:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:06:49,740 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 71 [2023-11-29 04:06:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:49,745 INFO L225 Difference]: With dead ends: 2141 [2023-11-29 04:06:49,745 INFO L226 Difference]: Without dead ends: 2140 [2023-11-29 04:06:49,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:06:49,746 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 228 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:49,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 239 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:06:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2023-11-29 04:06:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2129. [2023-11-29 04:06:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2035 states have (on average 1.1803439803439804) internal successors, (2402), 2043 states have internal predecessors, (2402), 83 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-29 04:06:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2568 transitions. [2023-11-29 04:06:50,059 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2568 transitions. Word has length 71 [2023-11-29 04:06:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:50,060 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 2568 transitions. [2023-11-29 04:06:50,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 04:06:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2568 transitions. [2023-11-29 04:06:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 04:06:50,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:50,061 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:06:50,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 04:06:50,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 04:06:50,262 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:06:50,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1672767130, now seen corresponding path program 1 times [2023-11-29 04:06:50,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:50,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548511214] [2023-11-29 04:06:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:50,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:50,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:06:50,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034675472] [2023-11-29 04:06:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:50,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:50,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:50,270 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:50,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 04:06:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:50,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:06:50,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:06:50,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:06:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:06:50,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:50,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548511214] [2023-11-29 04:06:50,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:06:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034675472] [2023-11-29 04:06:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034675472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:06:50,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:06:50,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-11-29 04:06:50,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981287490] [2023-11-29 04:06:50,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:06:50,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:06:50,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:50,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:06:50,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:06:50,763 INFO L87 Difference]: Start difference. First operand 2129 states and 2568 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 04:06:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:52,648 INFO L93 Difference]: Finished difference Result 3837 states and 4644 transitions. [2023-11-29 04:06:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:06:52,649 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) Word has length 72 [2023-11-29 04:06:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:52,653 INFO L225 Difference]: With dead ends: 3837 [2023-11-29 04:06:52,653 INFO L226 Difference]: Without dead ends: 2095 [2023-11-29 04:06:52,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:06:52,655 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 444 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:52,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 217 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:06:52,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2023-11-29 04:06:52,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1746. [2023-11-29 04:06:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1670 states have (on average 1.1712574850299402) internal successors, (1956), 1678 states have internal predecessors, (1956), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-29 04:06:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2086 transitions. [2023-11-29 04:06:52,918 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2086 transitions. Word has length 72 [2023-11-29 04:06:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:52,919 INFO L495 AbstractCegarLoop]: Abstraction has 1746 states and 2086 transitions. [2023-11-29 04:06:52,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 04:06:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2086 transitions. [2023-11-29 04:06:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 04:06:52,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:52,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:06:52,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 04:06:53,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:53,120 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:06:53,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1804651573, now seen corresponding path program 1 times [2023-11-29 04:06:53,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:53,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988216603] [2023-11-29 04:06:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:53,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:53,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:06:53,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370574836] [2023-11-29 04:06:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:53,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:53,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:53,128 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:53,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 04:06:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:53,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 04:06:53,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:06:53,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:07:03,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:03,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988216603] [2023-11-29 04:07:03,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:07:03,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370574836] [2023-11-29 04:07:03,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370574836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:07:03,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:07:03,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 04:07:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096438363] [2023-11-29 04:07:03,445 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:07:03,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:07:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:07:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:07:03,446 INFO L87 Difference]: Start difference. First operand 1746 states and 2086 transitions. Second operand has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 04:07:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:04,988 INFO L93 Difference]: Finished difference Result 1765 states and 2107 transitions. [2023-11-29 04:07:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:07:04,989 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 77 [2023-11-29 04:07:04,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:04,992 INFO L225 Difference]: With dead ends: 1765 [2023-11-29 04:07:04,992 INFO L226 Difference]: Without dead ends: 1764 [2023-11-29 04:07:04,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 04:07:04,993 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 231 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:04,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 251 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:07:04,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-11-29 04:07:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1753. [2023-11-29 04:07:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1677 states have (on average 1.1705426356589148) internal successors, (1963), 1685 states have internal predecessors, (1963), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-29 04:07:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2093 transitions. [2023-11-29 04:07:05,268 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2093 transitions. Word has length 77 [2023-11-29 04:07:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:05,269 INFO L495 AbstractCegarLoop]: Abstraction has 1753 states and 2093 transitions. [2023-11-29 04:07:05,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 04:07:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2093 transitions. [2023-11-29 04:07:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 04:07:05,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:05,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:07:05,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 04:07:05,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:05,471 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:07:05,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:05,471 INFO L85 PathProgramCache]: Analyzing trace with hash -343933618, now seen corresponding path program 1 times [2023-11-29 04:07:05,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:05,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66977305] [2023-11-29 04:07:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:05,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:05,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:07:05,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570124550] [2023-11-29 04:07:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:05,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:05,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:05,481 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:05,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 04:07:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:05,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:07:05,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:07:05,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:07:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:07:06,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:06,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66977305] [2023-11-29 04:07:06,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:07:06,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570124550] [2023-11-29 04:07:06,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570124550] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:07:06,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:07:06,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 23 [2023-11-29 04:07:06,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984053492] [2023-11-29 04:07:06,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:06,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:07:06,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:06,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:07:06,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:07:06,573 INFO L87 Difference]: Start difference. First operand 1753 states and 2093 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:07:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:07,825 INFO L93 Difference]: Finished difference Result 2008 states and 2393 transitions. [2023-11-29 04:07:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:07:07,826 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 78 [2023-11-29 04:07:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:07,828 INFO L225 Difference]: With dead ends: 2008 [2023-11-29 04:07:07,829 INFO L226 Difference]: Without dead ends: 1469 [2023-11-29 04:07:07,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:07:07,830 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 137 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:07,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 91 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:07:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-11-29 04:07:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1437. [2023-11-29 04:07:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1371 states have (on average 1.1706783369803064) internal successors, (1605), 1379 states have internal predecessors, (1605), 55 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-29 04:07:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1715 transitions. [2023-11-29 04:07:08,059 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1715 transitions. Word has length 78 [2023-11-29 04:07:08,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:08,059 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1715 transitions. [2023-11-29 04:07:08,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:07:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1715 transitions. [2023-11-29 04:07:08,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 04:07:08,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:08,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:07:08,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-29 04:07:08,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:08,261 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:07:08,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash 231487315, now seen corresponding path program 1 times [2023-11-29 04:07:08,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:08,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862752269] [2023-11-29 04:07:08,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:08,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:08,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:07:08,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89809114] [2023-11-29 04:07:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:08,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:08,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:08,270 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:08,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 04:07:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:08,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:07:08,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:07:08,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:07:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:07:44,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:44,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862752269] [2023-11-29 04:07:44,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:07:44,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89809114] [2023-11-29 04:07:44,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89809114] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:07:44,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:07:44,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2023-11-29 04:07:44,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210349521] [2023-11-29 04:07:44,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:07:44,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 04:07:44,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:44,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 04:07:44,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:07:44,497 INFO L87 Difference]: Start difference. First operand 1437 states and 1715 transitions. Second operand has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 22 states have internal predecessors, (118), 9 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 04:08:02,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:08:25,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:08:28,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:08:32,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:08:46,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:08:46,683 INFO L93 Difference]: Finished difference Result 2670 states and 3183 transitions. [2023-11-29 04:08:46,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 04:08:46,683 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 22 states have internal predecessors, (118), 9 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) Word has length 84 [2023-11-29 04:08:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:08:46,687 INFO L225 Difference]: With dead ends: 2670 [2023-11-29 04:08:46,687 INFO L226 Difference]: Without dead ends: 2669 [2023-11-29 04:08:46,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=485, Invalid=1405, Unknown=2, NotChecked=0, Total=1892 [2023-11-29 04:08:46,688 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 820 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:08:46,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 349 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 35.0s Time] [2023-11-29 04:08:46,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2023-11-29 04:08:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2309. [2023-11-29 04:08:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2201 states have (on average 1.178555202180827) internal successors, (2594), 2209 states have internal predecessors, (2594), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 04:08:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2788 transitions. [2023-11-29 04:08:47,120 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2788 transitions. Word has length 84 [2023-11-29 04:08:47,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:08:47,120 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 2788 transitions. [2023-11-29 04:08:47,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 22 states have internal predecessors, (118), 9 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 04:08:47,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2788 transitions. [2023-11-29 04:08:47,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 04:08:47,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:08:47,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 04:08:47,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-29 04:08:47,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:08:47,322 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:08:47,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:08:47,323 INFO L85 PathProgramCache]: Analyzing trace with hash -787480161, now seen corresponding path program 1 times [2023-11-29 04:08:47,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:08:47,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684214356] [2023-11-29 04:08:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:47,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:08:47,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:08:47,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749262148] [2023-11-29 04:08:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:47,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:08:47,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:08:47,332 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:08:47,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 04:08:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:08:47,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:08:47,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:08:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:08:47,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:08:52,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:08:52,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684214356] [2023-11-29 04:08:52,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:08:52,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749262148] [2023-11-29 04:08:52,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749262148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:08:52,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:08:52,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 04:08:52,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517361582] [2023-11-29 04:08:52,955 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:08:52,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:08:52,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:08:52,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:08:52,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:08:52,956 INFO L87 Difference]: Start difference. First operand 2309 states and 2788 transitions. Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:08:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:08:53,998 INFO L93 Difference]: Finished difference Result 2340 states and 2820 transitions. [2023-11-29 04:08:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:08:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 85 [2023-11-29 04:08:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:08:54,001 INFO L225 Difference]: With dead ends: 2340 [2023-11-29 04:08:54,002 INFO L226 Difference]: Without dead ends: 2339 [2023-11-29 04:08:54,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:08:54,002 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 151 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:08:54,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 213 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:08:54,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2023-11-29 04:08:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2313. [2023-11-29 04:08:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2205 states have (on average 1.1782312925170069) internal successors, (2598), 2213 states have internal predecessors, (2598), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 04:08:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 2792 transitions. [2023-11-29 04:08:54,407 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 2792 transitions. Word has length 85 [2023-11-29 04:08:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:08:54,408 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 2792 transitions. [2023-11-29 04:08:54,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 10 states have internal predecessors, (61), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:08:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 2792 transitions. [2023-11-29 04:08:54,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 04:08:54,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:08:54,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:08:54,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-29 04:08:54,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:08:54,609 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:08:54,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:08:54,610 INFO L85 PathProgramCache]: Analyzing trace with hash -483654812, now seen corresponding path program 1 times [2023-11-29 04:08:54,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:08:54,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719913206] [2023-11-29 04:08:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:54,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:08:54,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:08:54,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030649817] [2023-11-29 04:08:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:54,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:08:54,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:08:54,617 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:08:54,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 04:08:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:08:54,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 04:08:54,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:09:06,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:09:08,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:09:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719913206] [2023-11-29 04:09:08,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:09:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030649817] [2023-11-29 04:09:08,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030649817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:09:08,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:09:08,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 04:09:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959320099] [2023-11-29 04:09:08,812 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:09:08,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:09:08,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:09:08,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:09:08,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:09:08,813 INFO L87 Difference]: Start difference. First operand 2313 states and 2792 transitions. Second operand has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 04:09:48,042 WARN L293 SmtUtils]: Spent 17.28s on a formula simplification. DAG size of input: 68 DAG size of output: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:09:51,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:09:57,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:10:02,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:10:16,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:10:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:18,934 INFO L93 Difference]: Finished difference Result 2316 states and 2794 transitions. [2023-11-29 04:10:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:10:18,934 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 86 [2023-11-29 04:10:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:18,937 INFO L225 Difference]: With dead ends: 2316 [2023-11-29 04:10:18,937 INFO L226 Difference]: Without dead ends: 2315 [2023-11-29 04:10:18,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=122, Invalid=688, Unknown=2, NotChecked=0, Total=812 [2023-11-29 04:10:18,938 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 103 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:18,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 310 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1300 Invalid, 1 Unknown, 0 Unchecked, 25.0s Time] [2023-11-29 04:10:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2023-11-29 04:10:19,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2307. [2023-11-29 04:10:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2199 states have (on average 1.178262846748522) internal successors, (2591), 2207 states have internal predecessors, (2591), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 04:10:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2785 transitions. [2023-11-29 04:10:19,358 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2785 transitions. Word has length 86 [2023-11-29 04:10:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:19,359 INFO L495 AbstractCegarLoop]: Abstraction has 2307 states and 2785 transitions. [2023-11-29 04:10:19,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 4 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 04:10:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2785 transitions. [2023-11-29 04:10:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 04:10:19,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:19,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 04:10:19,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:19,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 04:10:19,561 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:10:19,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:19,561 INFO L85 PathProgramCache]: Analyzing trace with hash -854187487, now seen corresponding path program 1 times [2023-11-29 04:10:19,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:19,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119835586] [2023-11-29 04:10:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:19,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:19,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:19,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800341805] [2023-11-29 04:10:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:19,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:19,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:19,570 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:19,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 04:10:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:19,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 04:10:19,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:10:20,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:48,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:48,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119835586] [2023-11-29 04:10:48,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:48,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800341805] [2023-11-29 04:10:48,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800341805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:48,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:10:48,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-29 04:10:48,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487341354] [2023-11-29 04:10:48,713 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:48,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:10:48,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:48,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:10:48,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=561, Unknown=1, NotChecked=0, Total=702 [2023-11-29 04:10:48,715 INFO L87 Difference]: Start difference. First operand 2307 states and 2785 transitions. Second operand has 16 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 04:10:50,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:50,568 INFO L93 Difference]: Finished difference Result 2318 states and 2796 transitions. [2023-11-29 04:10:50,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:10:50,568 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 87 [2023-11-29 04:10:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:50,571 INFO L225 Difference]: With dead ends: 2318 [2023-11-29 04:10:50,571 INFO L226 Difference]: Without dead ends: 2317 [2023-11-29 04:10:50,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=174, Invalid=755, Unknown=1, NotChecked=0, Total=930 [2023-11-29 04:10:50,573 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 155 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:50,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 253 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:10:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2023-11-29 04:10:51,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2309. [2023-11-29 04:10:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2201 states have (on average 1.17810086324398) internal successors, (2593), 2209 states have internal predecessors, (2593), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 04:10:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2787 transitions. [2023-11-29 04:10:51,006 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2787 transitions. Word has length 87 [2023-11-29 04:10:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:51,006 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 2787 transitions. [2023-11-29 04:10:51,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 04:10:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2787 transitions. [2023-11-29 04:10:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 04:10:51,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:51,008 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 04:10:51,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:51,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 04:10:51,208 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-29 04:10:51,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:51,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1687516195, now seen corresponding path program 1 times [2023-11-29 04:10:51,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:51,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250928062] [2023-11-29 04:10:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:51,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:51,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:51,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262752204] [2023-11-29 04:10:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:51,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:51,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:51,216 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:51,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac4c07ca-8998-4c9c-81db-5ee7109538e3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 04:10:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:51,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:10:51,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:11:17,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:22,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:22,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250928062] [2023-11-29 04:11:22,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:11:22,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262752204] [2023-11-29 04:11:22,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262752204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:22,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:11:22,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 04:11:22,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144398353] [2023-11-29 04:11:22,787 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:22,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:11:22,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:11:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:11:22,788 INFO L87 Difference]: Start difference. First operand 2309 states and 2787 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 04:11:26,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:11:29,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:11:33,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:11:38,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:11:42,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:11:46,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:11:50,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:11:55,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:11:59,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:03,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:07,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:11,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:15,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:19,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:23,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:30,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:44,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:48,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:52,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:12:57,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:13:04,116 WARN L293 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 86 DAG size of output: 90 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:13:14,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]