./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/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_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/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_19e90936-be26-4835-b849-d0723c6971b6/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 a44e961521da9b8f4535724e185f402d94bec27d495ab6df10e2b3c1ffa4513a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:29,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:29,428 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:59:29,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:29,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:29,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:29,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:29,476 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:29,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:29,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:29,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:29,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:29,481 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:29,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:29,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:29,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:29,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:29,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:29,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:29,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:29,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:29,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:29,495 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:29,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:29,496 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:29,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:29,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:29,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:29,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:29,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:29,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:29,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:29,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:29,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:29,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:29,500 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:29,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:29,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:29,501 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:29,501 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_19e90936-be26-4835-b849-d0723c6971b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a44e961521da9b8f4535724e185f402d94bec27d495ab6df10e2b3c1ffa4513a [2023-11-19 07:59:29,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:29,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:29,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:29,868 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:29,868 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:29,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2023-11-19 07:59:32,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:33,354 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:33,355 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2023-11-19 07:59:33,379 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/data/1cd715d3c/d1793f782d284c44ac6d7b8b77251149/FLAG55ce3782a [2023-11-19 07:59:33,395 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/data/1cd715d3c/d1793f782d284c44ac6d7b8b77251149 [2023-11-19 07:59:33,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:33,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:33,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:33,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:33,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:33,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:33,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247087ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33, skipping insertion in model container [2023-11-19 07:59:33,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:33,482 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:33,789 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_19e90936-be26-4835-b849-d0723c6971b6/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2023-11-19 07:59:33,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:33,810 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:33,910 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_19e90936-be26-4835-b849-d0723c6971b6/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2023-11-19 07:59:33,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:33,932 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:33,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33 WrapperNode [2023-11-19 07:59:33,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:33,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:33,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:33,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:33,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:33,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,006 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 443 [2023-11-19 07:59:34,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:34,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:34,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:34,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:34,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:34,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:34,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:34,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:34,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:34,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:34,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:34,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:34,391 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:34,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:35,142 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:35,153 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:35,153 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:59:35,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:35 BoogieIcfgContainer [2023-11-19 07:59:35,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:35,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:35,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:35,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:35,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:33" (1/3) ... [2023-11-19 07:59:35,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eebdc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:35, skipping insertion in model container [2023-11-19 07:59:35,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (2/3) ... [2023-11-19 07:59:35,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eebdc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:35, skipping insertion in model container [2023-11-19 07:59:35,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:35" (3/3) ... [2023-11-19 07:59:35,171 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2023-11-19 07:59:35,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:35,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:59:35,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:35,259 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;@737e3825, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:35,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:59:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 119 states have (on average 1.7647058823529411) internal successors, (210), 120 states have internal predecessors, (210), 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 07:59:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:59:35,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:35,304 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] [2023-11-19 07:59:35,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:35,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash 89596463, now seen corresponding path program 1 times [2023-11-19 07:59:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:35,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738024834] [2023-11-19 07:59:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:36,052 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 07:59:36,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:36,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738024834] [2023-11-19 07:59:36,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738024834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:36,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:36,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103388268] [2023-11-19 07:59:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:36,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:36,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:36,112 INFO L87 Difference]: Start difference. First operand has 121 states, 119 states have (on average 1.7647058823529411) internal successors, (210), 120 states have internal predecessors, (210), 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 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 07:59:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:36,319 INFO L93 Difference]: Finished difference Result 199 states and 336 transitions. [2023-11-19 07:59:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:36,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2023-11-19 07:59:36,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:36,339 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:59:36,339 INFO L226 Difference]: Without dead ends: 117 [2023-11-19 07:59:36,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:36,349 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:36,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 774 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-19 07:59:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-19 07:59:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.396551724137931) internal successors, (162), 116 states have internal predecessors, (162), 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 07:59:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 162 transitions. [2023-11-19 07:59:36,427 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 162 transitions. Word has length 37 [2023-11-19 07:59:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:36,427 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 162 transitions. [2023-11-19 07:59:36,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 07:59:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 162 transitions. [2023-11-19 07:59:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:59:36,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:36,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:36,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:59:36,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:36,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash 446628089, now seen corresponding path program 1 times [2023-11-19 07:59:36,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:36,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978605614] [2023-11-19 07:59:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:36,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:36,717 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 07:59:36,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:36,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978605614] [2023-11-19 07:59:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978605614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:36,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:36,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:36,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927398742] [2023-11-19 07:59:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:36,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:36,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:36,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:36,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:36,723 INFO L87 Difference]: Start difference. First operand 117 states and 162 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 07:59:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:36,753 INFO L93 Difference]: Finished difference Result 249 states and 378 transitions. [2023-11-19 07:59:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:36,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-11-19 07:59:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:36,756 INFO L225 Difference]: With dead ends: 249 [2023-11-19 07:59:36,756 INFO L226 Difference]: Without dead ends: 179 [2023-11-19 07:59:36,757 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 07:59:36,759 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 91 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:36,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-19 07:59:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2023-11-19 07:59:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4829545454545454) internal successors, (261), 176 states have internal predecessors, (261), 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 07:59:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 261 transitions. [2023-11-19 07:59:36,778 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 261 transitions. Word has length 77 [2023-11-19 07:59:36,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:36,779 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 261 transitions. [2023-11-19 07:59:36,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 07:59:36,780 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 261 transitions. [2023-11-19 07:59:36,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:59:36,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:36,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:36,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:59:36,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:36,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1625058746, now seen corresponding path program 1 times [2023-11-19 07:59:36,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:36,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953734135] [2023-11-19 07:59:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:36,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:37,297 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 07:59:37,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:37,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953734135] [2023-11-19 07:59:37,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953734135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:37,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:37,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:37,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843024722] [2023-11-19 07:59:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:37,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:37,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:37,305 INFO L87 Difference]: Start difference. First operand 177 states and 261 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 07:59:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:37,606 INFO L93 Difference]: Finished difference Result 1087 states and 1759 transitions. [2023-11-19 07:59:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:59:37,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 77 [2023-11-19 07:59:37,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:37,620 INFO L225 Difference]: With dead ends: 1087 [2023-11-19 07:59:37,621 INFO L226 Difference]: Without dead ends: 957 [2023-11-19 07:59:37,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:37,635 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 2030 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:37,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 1179 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:37,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-11-19 07:59:37,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 305. [2023-11-19 07:59:37,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.5460526315789473) internal successors, (470), 304 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 470 transitions. [2023-11-19 07:59:37,715 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 470 transitions. Word has length 77 [2023-11-19 07:59:37,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:37,717 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 470 transitions. [2023-11-19 07:59:37,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 07:59:37,717 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 470 transitions. [2023-11-19 07:59:37,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:59:37,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:37,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:37,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:59:37,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:37,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:37,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1546109612, now seen corresponding path program 1 times [2023-11-19 07:59:37,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:37,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749132930] [2023-11-19 07:59:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:38,203 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 07:59:38,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:38,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749132930] [2023-11-19 07:59:38,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749132930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:38,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:38,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288224860] [2023-11-19 07:59:38,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:38,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:38,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:38,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:38,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:38,208 INFO L87 Difference]: Start difference. First operand 305 states and 470 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 07:59:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:38,280 INFO L93 Difference]: Finished difference Result 551 states and 873 transitions. [2023-11-19 07:59:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:38,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 78 [2023-11-19 07:59:38,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:38,289 INFO L225 Difference]: With dead ends: 551 [2023-11-19 07:59:38,289 INFO L226 Difference]: Without dead ends: 549 [2023-11-19 07:59:38,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:38,302 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 107 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:38,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 907 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-11-19 07:59:38,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 317. [2023-11-19 07:59:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.5253164556962024) internal successors, (482), 316 states have internal predecessors, (482), 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 07:59:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 482 transitions. [2023-11-19 07:59:38,336 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 482 transitions. Word has length 78 [2023-11-19 07:59:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:38,337 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 482 transitions. [2023-11-19 07:59:38,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 07:59:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 482 transitions. [2023-11-19 07:59:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:59:38,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:38,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:38,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:59:38,348 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:38,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash -632178990, now seen corresponding path program 1 times [2023-11-19 07:59:38,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:38,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858497464] [2023-11-19 07:59:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:38,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:38,496 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 07:59:38,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:38,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858497464] [2023-11-19 07:59:38,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858497464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:38,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:38,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:38,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615198716] [2023-11-19 07:59:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:38,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:38,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:38,501 INFO L87 Difference]: Start difference. First operand 317 states and 482 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 07:59:38,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:38,528 INFO L93 Difference]: Finished difference Result 827 states and 1302 transitions. [2023-11-19 07:59:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:38,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2023-11-19 07:59:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:38,535 INFO L225 Difference]: With dead ends: 827 [2023-11-19 07:59:38,535 INFO L226 Difference]: Without dead ends: 557 [2023-11-19 07:59:38,537 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 07:59:38,538 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 76 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:38,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 274 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-19 07:59:38,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 555. [2023-11-19 07:59:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 1.555956678700361) internal successors, (862), 554 states have internal predecessors, (862), 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 07:59:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 862 transitions. [2023-11-19 07:59:38,564 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 862 transitions. Word has length 79 [2023-11-19 07:59:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:38,566 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 862 transitions. [2023-11-19 07:59:38,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 07:59:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 862 transitions. [2023-11-19 07:59:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:59:38,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:38,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:38,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:59:38,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:38,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1939222481, now seen corresponding path program 1 times [2023-11-19 07:59:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:38,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443658936] [2023-11-19 07:59:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:38,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:38,676 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 07:59:38,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:38,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443658936] [2023-11-19 07:59:38,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443658936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:38,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:38,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:38,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279067225] [2023-11-19 07:59:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:38,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:38,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:38,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:38,679 INFO L87 Difference]: Start difference. First operand 555 states and 862 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 07:59:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:38,710 INFO L93 Difference]: Finished difference Result 1065 states and 1679 transitions. [2023-11-19 07:59:38,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:38,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2023-11-19 07:59:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:38,716 INFO L225 Difference]: With dead ends: 1065 [2023-11-19 07:59:38,716 INFO L226 Difference]: Without dead ends: 795 [2023-11-19 07:59:38,717 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 07:59:38,718 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 103 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:38,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 368 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-11-19 07:59:38,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2023-11-19 07:59:38,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.5631313131313131) internal successors, (1238), 792 states have internal predecessors, (1238), 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 07:59:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1238 transitions. [2023-11-19 07:59:38,750 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1238 transitions. Word has length 79 [2023-11-19 07:59:38,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:38,750 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1238 transitions. [2023-11-19 07:59:38,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 07:59:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1238 transitions. [2023-11-19 07:59:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:59:38,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:38,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:38,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:59:38,763 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:38,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:38,764 INFO L85 PathProgramCache]: Analyzing trace with hash 843177357, now seen corresponding path program 1 times [2023-11-19 07:59:38,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:38,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360327795] [2023-11-19 07:59:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:38,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:38,855 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 07:59:38,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:38,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360327795] [2023-11-19 07:59:38,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360327795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:38,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:38,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:38,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822026169] [2023-11-19 07:59:38,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:38,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:38,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:38,860 INFO L87 Difference]: Start difference. First operand 793 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:59:38,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:38,914 INFO L93 Difference]: Finished difference Result 2185 states and 3448 transitions. [2023-11-19 07:59:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:38,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2023-11-19 07:59:38,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:38,924 INFO L225 Difference]: With dead ends: 2185 [2023-11-19 07:59:38,924 INFO L226 Difference]: Without dead ends: 1441 [2023-11-19 07:59:38,925 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 07:59:38,926 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 83 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:38,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 326 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2023-11-19 07:59:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1439. [2023-11-19 07:59:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 1.5618915159944367) internal successors, (2246), 1438 states have internal predecessors, (2246), 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 07:59:39,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2246 transitions. [2023-11-19 07:59:39,015 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2246 transitions. Word has length 80 [2023-11-19 07:59:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:39,015 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 2246 transitions. [2023-11-19 07:59:39,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:59:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2246 transitions. [2023-11-19 07:59:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:59:39,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:39,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:39,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:59:39,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:39,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:39,018 INFO L85 PathProgramCache]: Analyzing trace with hash -957511571, now seen corresponding path program 1 times [2023-11-19 07:59:39,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:39,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765794543] [2023-11-19 07:59:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:39,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:39,124 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 07:59:39,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:39,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765794543] [2023-11-19 07:59:39,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765794543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:39,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:39,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:39,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274021675] [2023-11-19 07:59:39,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:39,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:39,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:39,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:39,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:39,127 INFO L87 Difference]: Start difference. First operand 1439 states and 2246 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:59:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:39,219 INFO L93 Difference]: Finished difference Result 4027 states and 6304 transitions. [2023-11-19 07:59:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2023-11-19 07:59:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:39,235 INFO L225 Difference]: With dead ends: 4027 [2023-11-19 07:59:39,235 INFO L226 Difference]: Without dead ends: 2637 [2023-11-19 07:59:39,237 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 07:59:39,238 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 87 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:39,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 339 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:39,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2023-11-19 07:59:39,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2635. [2023-11-19 07:59:39,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.5497342444950646) internal successors, (4082), 2634 states have internal predecessors, (4082), 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 07:59:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 4082 transitions. [2023-11-19 07:59:39,357 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 4082 transitions. Word has length 80 [2023-11-19 07:59:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:39,357 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 4082 transitions. [2023-11-19 07:59:39,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:59:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 4082 transitions. [2023-11-19 07:59:39,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:59:39,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:39,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:39,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:59:39,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:39,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1565232685, now seen corresponding path program 1 times [2023-11-19 07:59:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:39,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036861306] [2023-11-19 07:59:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:39,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:39,447 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 07:59:39,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:39,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036861306] [2023-11-19 07:59:39,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036861306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:39,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:39,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:39,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968088779] [2023-11-19 07:59:39,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:39,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:39,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:39,450 INFO L87 Difference]: Start difference. First operand 2635 states and 4082 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:59:39,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:39,622 INFO L93 Difference]: Finished difference Result 7423 states and 11476 transitions. [2023-11-19 07:59:39,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:39,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2023-11-19 07:59:39,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:39,653 INFO L225 Difference]: With dead ends: 7423 [2023-11-19 07:59:39,653 INFO L226 Difference]: Without dead ends: 4837 [2023-11-19 07:59:39,657 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 07:59:39,658 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 95 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:39,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 355 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4837 states. [2023-11-19 07:59:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4837 to 4835. [2023-11-19 07:59:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4835 states, 4834 states have (on average 1.5295821266032272) internal successors, (7394), 4834 states have internal predecessors, (7394), 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 07:59:39,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 7394 transitions. [2023-11-19 07:59:39,879 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 7394 transitions. Word has length 80 [2023-11-19 07:59:39,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:39,880 INFO L495 AbstractCegarLoop]: Abstraction has 4835 states and 7394 transitions. [2023-11-19 07:59:39,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:59:39,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 7394 transitions. [2023-11-19 07:59:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:59:39,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:39,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:39,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:59:39,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:39,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash -26351347, now seen corresponding path program 1 times [2023-11-19 07:59:39,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:39,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984270059] [2023-11-19 07:59:39,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:39,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:39,962 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 07:59:39,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:39,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984270059] [2023-11-19 07:59:39,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984270059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:39,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:39,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:39,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297773289] [2023-11-19 07:59:39,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:39,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:39,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:39,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:39,965 INFO L87 Difference]: Start difference. First operand 4835 states and 7394 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:59:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:40,243 INFO L93 Difference]: Finished difference Result 13639 states and 20740 transitions. [2023-11-19 07:59:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:40,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2023-11-19 07:59:40,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:40,294 INFO L225 Difference]: With dead ends: 13639 [2023-11-19 07:59:40,294 INFO L226 Difference]: Without dead ends: 8853 [2023-11-19 07:59:40,301 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 07:59:40,302 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 99 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:40,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 368 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2023-11-19 07:59:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 8851. [2023-11-19 07:59:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8851 states, 8850 states have (on average 1.5025988700564972) internal successors, (13298), 8850 states have internal predecessors, (13298), 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 07:59:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8851 states to 8851 states and 13298 transitions. [2023-11-19 07:59:40,817 INFO L78 Accepts]: Start accepts. Automaton has 8851 states and 13298 transitions. Word has length 80 [2023-11-19 07:59:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:40,817 INFO L495 AbstractCegarLoop]: Abstraction has 8851 states and 13298 transitions. [2023-11-19 07:59:40,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 07:59:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 8851 states and 13298 transitions. [2023-11-19 07:59:40,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:59:40,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:40,826 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:40,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:59:40,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:40,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:40,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1785241918, now seen corresponding path program 1 times [2023-11-19 07:59:40,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:40,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668158615] [2023-11-19 07:59:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:40,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:41,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:41,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668158615] [2023-11-19 07:59:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668158615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:41,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:41,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:41,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926042198] [2023-11-19 07:59:41,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:41,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:41,097 INFO L87 Difference]: Start difference. First operand 8851 states and 13298 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:41,436 INFO L93 Difference]: Finished difference Result 17655 states and 26548 transitions. [2023-11-19 07:59:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:41,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:41,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:41,479 INFO L225 Difference]: With dead ends: 17655 [2023-11-19 07:59:41,479 INFO L226 Difference]: Without dead ends: 8853 [2023-11-19 07:59:41,491 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 07:59:41,494 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 80 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:41,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 362 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2023-11-19 07:59:41,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 8851. [2023-11-19 07:59:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8851 states, 8850 states have (on average 1.4917514124293785) internal successors, (13202), 8850 states have internal predecessors, (13202), 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 07:59:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8851 states to 8851 states and 13202 transitions. [2023-11-19 07:59:42,039 INFO L78 Accepts]: Start accepts. Automaton has 8851 states and 13202 transitions. Word has length 110 [2023-11-19 07:59:42,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:42,039 INFO L495 AbstractCegarLoop]: Abstraction has 8851 states and 13202 transitions. [2023-11-19 07:59:42,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8851 states and 13202 transitions. [2023-11-19 07:59:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:59:42,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:42,045 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:42,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:59:42,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:42,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:42,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2076585793, now seen corresponding path program 1 times [2023-11-19 07:59:42,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:42,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463171697] [2023-11-19 07:59:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:42,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463171697] [2023-11-19 07:59:42,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463171697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:42,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:42,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:42,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499561418] [2023-11-19 07:59:42,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:42,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:42,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:42,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:42,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:42,253 INFO L87 Difference]: Start difference. First operand 8851 states and 13202 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:42,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:42,449 INFO L93 Difference]: Finished difference Result 13255 states and 19780 transitions. [2023-11-19 07:59:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:42,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:42,461 INFO L225 Difference]: With dead ends: 13255 [2023-11-19 07:59:42,461 INFO L226 Difference]: Without dead ends: 4453 [2023-11-19 07:59:42,471 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 07:59:42,471 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 74 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:42,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 343 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2023-11-19 07:59:42,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 4451. [2023-11-19 07:59:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 4450 states have (on average 1.4782022471910112) internal successors, (6578), 4450 states have internal predecessors, (6578), 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 07:59:42,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 6578 transitions. [2023-11-19 07:59:42,690 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 6578 transitions. Word has length 110 [2023-11-19 07:59:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:42,690 INFO L495 AbstractCegarLoop]: Abstraction has 4451 states and 6578 transitions. [2023-11-19 07:59:42,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 6578 transitions. [2023-11-19 07:59:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:59:42,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:42,695 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:42,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:59:42,695 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:42,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1799940288, now seen corresponding path program 1 times [2023-11-19 07:59:42,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:42,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160813962] [2023-11-19 07:59:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:42,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:42,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:42,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160813962] [2023-11-19 07:59:42,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160813962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:42,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:42,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:42,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449889855] [2023-11-19 07:59:42,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:42,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:42,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:42,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:42,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:42,908 INFO L87 Difference]: Start difference. First operand 4451 states and 6578 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:43,068 INFO L93 Difference]: Finished difference Result 6655 states and 9844 transitions. [2023-11-19 07:59:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:43,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:43,073 INFO L225 Difference]: With dead ends: 6655 [2023-11-19 07:59:43,074 INFO L226 Difference]: Without dead ends: 2253 [2023-11-19 07:59:43,078 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 07:59:43,079 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 68 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:43,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 321 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:43,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2023-11-19 07:59:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2251. [2023-11-19 07:59:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2250 states have (on average 1.4622222222222223) internal successors, (3290), 2250 states have internal predecessors, (3290), 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 07:59:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3290 transitions. [2023-11-19 07:59:43,177 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3290 transitions. Word has length 110 [2023-11-19 07:59:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:43,177 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3290 transitions. [2023-11-19 07:59:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3290 transitions. [2023-11-19 07:59:43,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:59:43,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:43,180 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:43,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:59:43,181 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:43,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1010003519, now seen corresponding path program 1 times [2023-11-19 07:59:43,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:43,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945670800] [2023-11-19 07:59:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:43,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:43,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:43,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945670800] [2023-11-19 07:59:43,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945670800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:43,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:43,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:43,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687571502] [2023-11-19 07:59:43,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:43,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:43,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:43,351 INFO L87 Difference]: Start difference. First operand 2251 states and 3290 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:43,400 INFO L93 Difference]: Finished difference Result 3355 states and 4912 transitions. [2023-11-19 07:59:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:43,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:43,403 INFO L225 Difference]: With dead ends: 3355 [2023-11-19 07:59:43,403 INFO L226 Difference]: Without dead ends: 1153 [2023-11-19 07:59:43,406 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 07:59:43,407 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 62 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:43,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 302 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2023-11-19 07:59:43,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1151. [2023-11-19 07:59:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 1.4417391304347826) internal successors, (1658), 1150 states have internal predecessors, (1658), 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 07:59:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1658 transitions. [2023-11-19 07:59:43,452 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1658 transitions. Word has length 110 [2023-11-19 07:59:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:43,453 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1658 transitions. [2023-11-19 07:59:43,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:59:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1658 transitions. [2023-11-19 07:59:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:59:43,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:43,456 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:43,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:59:43,456 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:43,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:43,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1396251838, now seen corresponding path program 1 times [2023-11-19 07:59:43,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:43,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626437666] [2023-11-19 07:59:43,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:43,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:45,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626437666] [2023-11-19 07:59:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626437666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663553698] [2023-11-19 07:59:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:45,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:45,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:45,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:45,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:59:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:59:45,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:46,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663553698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:49,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:49,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-19 07:59:49,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027945234] [2023-11-19 07:59:49,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:49,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-19 07:59:49,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:49,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-19 07:59:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-11-19 07:59:49,682 INFO L87 Difference]: Start difference. First operand 1151 states and 1658 transitions. Second operand has 28 states, 28 states have (on average 10.392857142857142) internal successors, (291), 27 states have internal predecessors, (291), 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 07:59:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:53,496 INFO L93 Difference]: Finished difference Result 7151 states and 10249 transitions. [2023-11-19 07:59:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-19 07:59:53,497 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.392857142857142) internal successors, (291), 27 states have internal predecessors, (291), 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 07:59:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:53,510 INFO L225 Difference]: With dead ends: 7151 [2023-11-19 07:59:53,511 INFO L226 Difference]: Without dead ends: 6397 [2023-11-19 07:59:53,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=835, Invalid=3325, Unknown=0, NotChecked=0, Total=4160 [2023-11-19 07:59:53,516 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 5149 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5149 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:53,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5149 Valid, 1884 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 07:59:53,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2023-11-19 07:59:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 4949. [2023-11-19 07:59:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4949 states, 4948 states have (on average 1.4417946645109134) internal successors, (7134), 4948 states have internal predecessors, (7134), 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 07:59:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4949 states to 4949 states and 7134 transitions. [2023-11-19 07:59:53,745 INFO L78 Accepts]: Start accepts. Automaton has 4949 states and 7134 transitions. Word has length 110 [2023-11-19 07:59:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:53,746 INFO L495 AbstractCegarLoop]: Abstraction has 4949 states and 7134 transitions. [2023-11-19 07:59:53,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.392857142857142) internal successors, (291), 27 states have internal predecessors, (291), 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 07:59:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4949 states and 7134 transitions. [2023-11-19 07:59:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 07:59:53,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:53,749 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:53,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:53,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e90936-be26-4835-b849-d0723c6971b6/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:59:53,964 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:53,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1668141927, now seen corresponding path program 1 times [2023-11-19 07:59:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:53,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799076160] [2023-11-19 07:59:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:53,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:59:54,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:54,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799076160] [2023-11-19 07:59:54,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799076160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:54,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:54,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844722200] [2023-11-19 07:59:54,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:54,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:54,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:54,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:54,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:54,238 INFO L87 Difference]: Start difference. First operand 4949 states and 7134 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 07:59:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:55,042 INFO L93 Difference]: Finished difference Result 18981 states and 27705 transitions. [2023-11-19 07:59:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:59:55,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 111 [2023-11-19 07:59:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:55,086 INFO L225 Difference]: With dead ends: 18981 [2023-11-19 07:59:55,086 INFO L226 Difference]: Without dead ends: 16497 [2023-11-19 07:59:55,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:55,096 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1263 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:55,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1427 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16497 states. [2023-11-19 07:59:55,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16497 to 7365. [2023-11-19 07:59:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7365 states, 7364 states have (on average 1.4422868006518197) internal successors, (10621), 7364 states have internal predecessors, (10621), 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 07:59:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7365 states to 7365 states and 10621 transitions. [2023-11-19 07:59:55,591 INFO L78 Accepts]: Start accepts. Automaton has 7365 states and 10621 transitions. Word has length 111 [2023-11-19 07:59:55,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:55,592 INFO L495 AbstractCegarLoop]: Abstraction has 7365 states and 10621 transitions. [2023-11-19 07:59:55,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 07:59:55,592 INFO L276 IsEmpty]: Start isEmpty. Operand 7365 states and 10621 transitions. [2023-11-19 07:59:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 07:59:55,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:55,596 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:55,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:59:55,597 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:55,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 12117595, now seen corresponding path program 1 times [2023-11-19 07:59:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378021120] [2023-11-19 07:59:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:59:55,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378021120] [2023-11-19 07:59:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378021120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:55,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:55,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059887704] [2023-11-19 07:59:55,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:55,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:55,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:55,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:55,891 INFO L87 Difference]: Start difference. First operand 7365 states and 10621 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 07:59:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:56,816 INFO L93 Difference]: Finished difference Result 21397 states and 31192 transitions. [2023-11-19 07:59:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:59:56,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 111 [2023-11-19 07:59:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:56,864 INFO L225 Difference]: With dead ends: 21397 [2023-11-19 07:59:56,864 INFO L226 Difference]: Without dead ends: 18913 [2023-11-19 07:59:56,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:56,873 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1340 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:56,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 1333 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18913 states. [2023-11-19 07:59:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18913 to 9781. [2023-11-19 07:59:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9781 states, 9780 states have (on average 1.4425357873210634) internal successors, (14108), 9780 states have internal predecessors, (14108), 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 07:59:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 14108 transitions. [2023-11-19 07:59:57,540 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 14108 transitions. Word has length 111 [2023-11-19 07:59:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:57,541 INFO L495 AbstractCegarLoop]: Abstraction has 9781 states and 14108 transitions. [2023-11-19 07:59:57,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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 07:59:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 14108 transitions. [2023-11-19 07:59:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 07:59:57,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:57,545 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:57,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:59:57,546 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:57,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:57,546 INFO L85 PathProgramCache]: Analyzing trace with hash -13184739, now seen corresponding path program 1 times [2023-11-19 07:59:57,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:57,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103045448] [2023-11-19 07:59:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:57,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:59:57,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:57,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103045448] [2023-11-19 07:59:57,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103045448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:57,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:57,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:57,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955204986] [2023-11-19 07:59:57,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:57,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:57,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:57,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:57,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:57,801 INFO L87 Difference]: Start difference. First operand 9781 states and 14108 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:59:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:58,664 INFO L93 Difference]: Finished difference Result 23813 states and 34679 transitions. [2023-11-19 07:59:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:59:58,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 111 [2023-11-19 07:59:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:58,780 INFO L225 Difference]: With dead ends: 23813 [2023-11-19 07:59:58,781 INFO L226 Difference]: Without dead ends: 21329 [2023-11-19 07:59:58,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:58,786 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1428 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:58,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 1344 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21329 states. [2023-11-19 07:59:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21329 to 12197. [2023-11-19 07:59:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12197 states, 12196 states have (on average 1.4426861265988848) internal successors, (17595), 12196 states have internal predecessors, (17595), 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 07:59:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12197 states to 12197 states and 17595 transitions. [2023-11-19 07:59:59,541 INFO L78 Accepts]: Start accepts. Automaton has 12197 states and 17595 transitions. Word has length 111 [2023-11-19 07:59:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:59,542 INFO L495 AbstractCegarLoop]: Abstraction has 12197 states and 17595 transitions. [2023-11-19 07:59:59,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 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 07:59:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 12197 states and 17595 transitions. [2023-11-19 07:59:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 07:59:59,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:59,547 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:59,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:59:59,547 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:59,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2102160607, now seen corresponding path program 1 times [2023-11-19 07:59:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:59,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120232493] [2023-11-19 07:59:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:59,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:59:59,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120232493] [2023-11-19 07:59:59,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120232493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:59,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:59,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:59,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050359715] [2023-11-19 07:59:59,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:59,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:59,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:59,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:59,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:59,802 INFO L87 Difference]: Start difference. First operand 12197 states and 17595 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 08:00:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:01,236 INFO L93 Difference]: Finished difference Result 26229 states and 38166 transitions. [2023-11-19 08:00:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:00:01,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 111 [2023-11-19 08:00:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:01,295 INFO L225 Difference]: With dead ends: 26229 [2023-11-19 08:00:01,295 INFO L226 Difference]: Without dead ends: 23745 [2023-11-19 08:00:01,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:00:01,306 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1240 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:01,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1536 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23745 states. [2023-11-19 08:00:02,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23745 to 14613. [2023-11-19 08:00:02,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14613 states, 14612 states have (on average 1.4427867506159322) internal successors, (21082), 14612 states have internal predecessors, (21082), 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 08:00:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14613 states to 14613 states and 21082 transitions. [2023-11-19 08:00:02,297 INFO L78 Accepts]: Start accepts. Automaton has 14613 states and 21082 transitions. Word has length 111 [2023-11-19 08:00:02,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:02,298 INFO L495 AbstractCegarLoop]: Abstraction has 14613 states and 21082 transitions. [2023-11-19 08:00:02,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 08:00:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 14613 states and 21082 transitions. [2023-11-19 08:00:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 08:00:02,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:02,302 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:02,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 08:00:02,302 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:02,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2117983273, now seen corresponding path program 1 times [2023-11-19 08:00:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834837662] [2023-11-19 08:00:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:00:02,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:02,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834837662] [2023-11-19 08:00:02,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834837662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:02,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:02,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:00:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003181099] [2023-11-19 08:00:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:02,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:00:02,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:02,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:00:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:00:02,512 INFO L87 Difference]: Start difference. First operand 14613 states and 21082 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 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 08:00:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:03,597 INFO L93 Difference]: Finished difference Result 28645 states and 41653 transitions. [2023-11-19 08:00:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:00:03,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 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 111 [2023-11-19 08:00:03,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:03,659 INFO L225 Difference]: With dead ends: 28645 [2023-11-19 08:00:03,659 INFO L226 Difference]: Without dead ends: 26161 [2023-11-19 08:00:03,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:00:03,669 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1175 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:03,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1876 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26161 states. [2023-11-19 08:00:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26161 to 17029. [2023-11-19 08:00:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17029 states, 17028 states have (on average 1.4428588207657975) internal successors, (24569), 17028 states have internal predecessors, (24569), 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 08:00:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17029 states to 17029 states and 24569 transitions. [2023-11-19 08:00:04,648 INFO L78 Accepts]: Start accepts. Automaton has 17029 states and 24569 transitions. Word has length 111 [2023-11-19 08:00:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:04,649 INFO L495 AbstractCegarLoop]: Abstraction has 17029 states and 24569 transitions. [2023-11-19 08:00:04,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 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 08:00:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 17029 states and 24569 transitions. [2023-11-19 08:00:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 08:00:04,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:04,654 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:04,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 08:00:04,655 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:04,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash -697947676, now seen corresponding path program 1 times [2023-11-19 08:00:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:04,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75744237] [2023-11-19 08:00:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:04,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:04,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75744237] [2023-11-19 08:00:04,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75744237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:04,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:04,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:04,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141619263] [2023-11-19 08:00:04,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:04,732 INFO L87 Difference]: Start difference. First operand 17029 states and 24569 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 08:00:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:05,969 INFO L93 Difference]: Finished difference Result 50541 states and 72713 transitions. [2023-11-19 08:00:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:05,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2023-11-19 08:00:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:06,032 INFO L225 Difference]: With dead ends: 50541 [2023-11-19 08:00:06,032 INFO L226 Difference]: Without dead ends: 33561 [2023-11-19 08:00:06,055 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 08:00:06,056 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 79 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:06,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 314 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:06,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33561 states. [2023-11-19 08:00:07,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33561 to 33559. [2023-11-19 08:00:07,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33559 states, 33558 states have (on average 1.4260682996602896) internal successors, (47856), 33558 states have internal predecessors, (47856), 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 08:00:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33559 states to 33559 states and 47856 transitions. [2023-11-19 08:00:07,895 INFO L78 Accepts]: Start accepts. Automaton has 33559 states and 47856 transitions. Word has length 111 [2023-11-19 08:00:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:07,896 INFO L495 AbstractCegarLoop]: Abstraction has 33559 states and 47856 transitions. [2023-11-19 08:00:07,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 08:00:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 33559 states and 47856 transitions. [2023-11-19 08:00:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 08:00:07,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:07,903 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:07,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 08:00:07,903 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:07,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1657991926, now seen corresponding path program 1 times [2023-11-19 08:00:07,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:07,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422601161] [2023-11-19 08:00:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:07,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:08,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:08,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422601161] [2023-11-19 08:00:08,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422601161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:08,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:08,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:00:08,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892019876] [2023-11-19 08:00:08,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:08,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:00:08,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:08,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:00:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:00:08,210 INFO L87 Difference]: Start difference. First operand 33559 states and 47856 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 08:00:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:10,160 INFO L93 Difference]: Finished difference Result 53247 states and 76384 transitions. [2023-11-19 08:00:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:00:10,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 111 [2023-11-19 08:00:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:10,247 INFO L225 Difference]: With dead ends: 53247 [2023-11-19 08:00:10,248 INFO L226 Difference]: Without dead ends: 51587 [2023-11-19 08:00:10,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:00:10,256 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1172 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:10,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1660 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51587 states. [2023-11-19 08:00:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51587 to 35217. [2023-11-19 08:00:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35217 states, 35216 states have (on average 1.4263686960472512) internal successors, (50231), 35216 states have internal predecessors, (50231), 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 08:00:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35217 states to 35217 states and 50231 transitions. [2023-11-19 08:00:11,962 INFO L78 Accepts]: Start accepts. Automaton has 35217 states and 50231 transitions. Word has length 111 [2023-11-19 08:00:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:11,962 INFO L495 AbstractCegarLoop]: Abstraction has 35217 states and 50231 transitions. [2023-11-19 08:00:11,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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 08:00:11,963 INFO L276 IsEmpty]: Start isEmpty. Operand 35217 states and 50231 transitions. [2023-11-19 08:00:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 08:00:11,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:11,970 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:11,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 08:00:11,970 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:11,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:11,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1924571766, now seen corresponding path program 1 times [2023-11-19 08:00:11,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:11,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422785490] [2023-11-19 08:00:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:11,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat