./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:47,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:47,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:43:47,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:47,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:47,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:47,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:47,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:47,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:47,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:47,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:47,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:47,803 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:47,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:47,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:47,806 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:47,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:47,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:47,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:47,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:47,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:47,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:47,810 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:47,811 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:47,811 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:47,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:47,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:47,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:47,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:47,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:47,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:47,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:47,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:47,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:47,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:47,818 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:47,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:47,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:47,818 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:47,819 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_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7308dc5f86f1f4eda090a45a8f84359680ddfad7d17e2c5273bd494b2cbe5e [2023-11-19 07:43:48,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:48,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:48,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:48,206 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:48,206 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:48,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2023-11-19 07:43:51,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:52,025 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:52,026 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2023-11-19 07:43:52,042 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/data/947dccec6/b335f48a3d7e43d8a6959aab136468fe/FLAG9316aef25 [2023-11-19 07:43:52,060 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/data/947dccec6/b335f48a3d7e43d8a6959aab136468fe [2023-11-19 07:43:52,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:52,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:52,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:52,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:52,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:52,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea1638e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52, skipping insertion in model container [2023-11-19 07:43:52,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,185 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:52,486 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2023-11-19 07:43:52,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:52,518 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:52,600 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2023-11-19 07:43:52,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:52,635 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:52,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52 WrapperNode [2023-11-19 07:43:52,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:52,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:52,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:52,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:52,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,666 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,737 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 613 [2023-11-19 07:43:52,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:52,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:52,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:52,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:52,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:52,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:52,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:52,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:52,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (1/1) ... [2023-11-19 07:43:52,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:52,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:52,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:52,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:53,087 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:53,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:53,515 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:53,538 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:53,538 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:43:53,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:53 BoogieIcfgContainer [2023-11-19 07:43:53,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:53,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:53,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:53,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:53,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:52" (1/3) ... [2023-11-19 07:43:53,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a63a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:53, skipping insertion in model container [2023-11-19 07:43:53,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:52" (2/3) ... [2023-11-19 07:43:53,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a63a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:53, skipping insertion in model container [2023-11-19 07:43:53,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:53" (3/3) ... [2023-11-19 07:43:53,552 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2023-11-19 07:43:53,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:53,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:43:53,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:53,630 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;@64e89094, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:53,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:43:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 53 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:43:53,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:53,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:53,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:53,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:53,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1627818147, now seen corresponding path program 1 times [2023-11-19 07:43:53,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:53,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628280692] [2023-11-19 07:43:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:53,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:54,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:54,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628280692] [2023-11-19 07:43:54,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628280692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:54,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:54,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:54,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132712508] [2023-11-19 07:43:54,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:54,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:43:54,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:43:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:54,388 INFO L87 Difference]: Start difference. First operand has 54 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 53 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:54,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:54,515 INFO L93 Difference]: Finished difference Result 64 states and 106 transitions. [2023-11-19 07:43:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:54,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-19 07:43:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:54,527 INFO L225 Difference]: With dead ends: 64 [2023-11-19 07:43:54,528 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:43:54,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:43:54,535 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 89 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:54,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 274 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:43:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:43:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 07:43:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2023-11-19 07:43:54,586 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 45 [2023-11-19 07:43:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:54,587 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2023-11-19 07:43:54,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2023-11-19 07:43:54,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:43:54,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:54,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:54,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:54,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:54,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1610807486, now seen corresponding path program 1 times [2023-11-19 07:43:54,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:54,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950545733] [2023-11-19 07:43:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:54,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:55,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:55,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950545733] [2023-11-19 07:43:55,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950545733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:55,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:55,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:43:55,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075002798] [2023-11-19 07:43:55,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:55,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:43:55,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:55,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:43:55,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:43:55,104 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:55,187 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2023-11-19 07:43:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:43:55,188 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-19 07:43:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:55,190 INFO L225 Difference]: With dead ends: 64 [2023-11-19 07:43:55,190 INFO L226 Difference]: Without dead ends: 57 [2023-11-19 07:43:55,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:43:55,192 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:55,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 106 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:43:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-19 07:43:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2023-11-19 07:43:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2023-11-19 07:43:55,201 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 45 [2023-11-19 07:43:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:55,202 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2023-11-19 07:43:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2023-11-19 07:43:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:43:55,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:55,205 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:55,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:43:55,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:55,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:55,206 INFO L85 PathProgramCache]: Analyzing trace with hash -234002152, now seen corresponding path program 1 times [2023-11-19 07:43:55,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:55,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671175318] [2023-11-19 07:43:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:55,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:55,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671175318] [2023-11-19 07:43:55,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671175318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:55,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:55,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:55,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811129030] [2023-11-19 07:43:55,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:55,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:55,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:55,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:55,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:55,313 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:55,334 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2023-11-19 07:43:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:55,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-19 07:43:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:55,338 INFO L225 Difference]: With dead ends: 67 [2023-11-19 07:43:55,338 INFO L226 Difference]: Without dead ends: 52 [2023-11-19 07:43:55,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:55,353 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:55,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-19 07:43:55,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-19 07:43:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2023-11-19 07:43:55,364 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2023-11-19 07:43:55,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:55,365 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2023-11-19 07:43:55,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2023-11-19 07:43:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:43:55,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:55,367 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:55,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:43:55,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:55,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash -686591427, now seen corresponding path program 1 times [2023-11-19 07:43:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:55,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353927015] [2023-11-19 07:43:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:55,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:55,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353927015] [2023-11-19 07:43:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353927015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421738171] [2023-11-19 07:43:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:55,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:55,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:55,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:43:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:55,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:43:56,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:56,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:56,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421738171] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:56,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:56,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-11-19 07:43:56,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267138463] [2023-11-19 07:43:56,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:56,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 07:43:56,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 07:43:56,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:43:56,594 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:56,757 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2023-11-19 07:43:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:43:56,758 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-19 07:43:56,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:56,765 INFO L225 Difference]: With dead ends: 119 [2023-11-19 07:43:56,765 INFO L226 Difference]: Without dead ends: 112 [2023-11-19 07:43:56,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:43:56,773 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 129 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:56,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 136 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:43:56,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-19 07:43:56,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-19 07:43:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2023-11-19 07:43:56,789 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 50 [2023-11-19 07:43:56,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:56,793 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2023-11-19 07:43:56,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2023-11-19 07:43:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:43:56,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:56,803 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:56,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:43:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:57,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:57,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 723240189, now seen corresponding path program 2 times [2023-11-19 07:43:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157024103] [2023-11-19 07:43:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:57,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:57,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157024103] [2023-11-19 07:43:57,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157024103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:57,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041081781] [2023-11-19 07:43:57,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:43:57,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:57,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:57,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:57,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:43:58,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:43:58,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:43:58,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:43:58,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:58,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041081781] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:59,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:59,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-11-19 07:43:59,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782354815] [2023-11-19 07:43:59,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:59,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-19 07:43:59,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-19 07:43:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 07:43:59,430 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:59,727 INFO L93 Difference]: Finished difference Result 239 states and 264 transitions. [2023-11-19 07:43:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 07:43:59,728 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-11-19 07:43:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:59,733 INFO L225 Difference]: With dead ends: 239 [2023-11-19 07:43:59,733 INFO L226 Difference]: Without dead ends: 232 [2023-11-19 07:43:59,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 07:43:59,735 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 77 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:59,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 225 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:43:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-19 07:43:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2023-11-19 07:43:59,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 231 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2023-11-19 07:43:59,769 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 110 [2023-11-19 07:43:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:59,770 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2023-11-19 07:43:59,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:43:59,771 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2023-11-19 07:43:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-11-19 07:43:59,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:59,778 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:59,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:59,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:59,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:59,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash -54490499, now seen corresponding path program 3 times [2023-11-19 07:43:59,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:59,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454962525] [2023-11-19 07:43:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:59,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:03,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:03,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454962525] [2023-11-19 07:44:03,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454962525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:03,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311097028] [2023-11-19 07:44:03,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:44:03,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:03,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:03,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:03,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:44:03,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2023-11-19 07:44:03,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:44:03,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 07:44:03,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:04,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:08,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311097028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:08,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:08,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2023-11-19 07:44:08,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420888998] [2023-11-19 07:44:08,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:08,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-11-19 07:44:08,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-11-19 07:44:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-19 07:44:08,016 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 97 states, 97 states have (on average 4.731958762886598) internal successors, (459), 97 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:08,745 INFO L93 Difference]: Finished difference Result 479 states and 528 transitions. [2023-11-19 07:44:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-19 07:44:08,746 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 4.731958762886598) internal successors, (459), 97 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2023-11-19 07:44:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:08,749 INFO L225 Difference]: With dead ends: 479 [2023-11-19 07:44:08,750 INFO L226 Difference]: Without dead ends: 472 [2023-11-19 07:44:08,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-19 07:44:08,755 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 133 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:08,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 370 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:44:08,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-11-19 07:44:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2023-11-19 07:44:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.0042462845010616) internal successors, (473), 471 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 473 transitions. [2023-11-19 07:44:08,771 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 473 transitions. Word has length 230 [2023-11-19 07:44:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:08,771 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 473 transitions. [2023-11-19 07:44:08,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 4.731958762886598) internal successors, (459), 97 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 473 transitions. [2023-11-19 07:44:08,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-11-19 07:44:08,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:08,780 INFO L195 NwaCegarLoop]: trace histogram [86, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:08,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:08,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:08,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:08,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1315269251, now seen corresponding path program 4 times [2023-11-19 07:44:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:08,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921751610] [2023-11-19 07:44:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:08,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:19,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:19,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921751610] [2023-11-19 07:44:19,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921751610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:44:19,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973893523] [2023-11-19 07:44:19,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:44:19,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:19,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:19,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:44:19,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:44:20,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:44:20,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:44:20,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 3850 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-19 07:44:20,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:21,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:44:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973893523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:33,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:44:33,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2023-11-19 07:44:33,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854954463] [2023-11-19 07:44:33,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:33,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2023-11-19 07:44:33,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2023-11-19 07:44:33,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2023-11-19 07:44:33,131 INFO L87 Difference]: Start difference. First operand 472 states and 473 transitions. Second operand has 193 states, 193 states have (on average 4.865284974093265) internal successors, (939), 193 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:35,345 INFO L93 Difference]: Finished difference Result 959 states and 1056 transitions. [2023-11-19 07:44:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-11-19 07:44:35,346 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.865284974093265) internal successors, (939), 193 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 470 [2023-11-19 07:44:35,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:35,352 INFO L225 Difference]: With dead ends: 959 [2023-11-19 07:44:35,352 INFO L226 Difference]: Without dead ends: 952 [2023-11-19 07:44:35,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2023-11-19 07:44:35,360 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 90 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:35,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 676 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:44:35,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-11-19 07:44:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2023-11-19 07:44:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 1.0021030494216614) internal successors, (953), 951 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 953 transitions. [2023-11-19 07:44:35,381 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 953 transitions. Word has length 470 [2023-11-19 07:44:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:35,382 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 953 transitions. [2023-11-19 07:44:35,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.865284974093265) internal successors, (939), 193 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:44:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 953 transitions. [2023-11-19 07:44:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2023-11-19 07:44:35,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:35,420 INFO L195 NwaCegarLoop]: trace histogram [182, 181, 181, 181, 181, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:35,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:35,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a0a7fa2-fda9-4116-9ec0-b9a0fff50a0b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:44:35,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:44:35,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2073078653, now seen corresponding path program 5 times [2023-11-19 07:44:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:35,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483887218] [2023-11-19 07:44:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat