./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e4a14a6af4061d17c8fde5475e0f3a38fede87663f764ff2ccff752f7727295 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:47,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:47,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:48:47,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:47,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:47,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:47,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:47,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:47,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:47,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:47,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:47,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:47,951 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:47,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:47,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:48:47,954 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:47,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:48:47,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:47,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:47,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:48:47,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:47,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:48:47,957 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:47,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:48:47,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:47,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:47,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:47,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:47,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:47,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:47,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:47,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:48:47,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:48:47,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:48:47,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:47,962 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:48:47,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:47,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:47,962 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:47,962 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_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e4a14a6af4061d17c8fde5475e0f3a38fede87663f764ff2ccff752f7727295 [2023-11-06 22:48:48,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:48,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:48,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:48,302 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:48,302 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:48,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-06 22:48:51,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:51,820 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:51,821 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-06 22:48:51,855 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/data/4226a624a/0fc6fa6228214250b43229654bdb60b5/FLAGb2cafe2cc [2023-11-06 22:48:51,877 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/data/4226a624a/0fc6fa6228214250b43229654bdb60b5 [2023-11-06 22:48:51,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:51,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:51,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:51,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:51,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:51,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:51" (1/1) ... [2023-11-06 22:48:51,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd3eeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:51, skipping insertion in model container [2023-11-06 22:48:51,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:51" (1/1) ... [2023-11-06 22:48:51,987 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:52,303 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_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13338,13351] [2023-11-06 22:48:52,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:52,425 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:52,530 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_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13338,13351] [2023-11-06 22:48:52,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:52,612 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:52,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52 WrapperNode [2023-11-06 22:48:52,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:52,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:52,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:52,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:52,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,728 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1391 [2023-11-06 22:48:52,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:52,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:52,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:52,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:52,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,783 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:52,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:52,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:52,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:52,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (1/1) ... [2023-11-06 22:48:52,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:52,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:52,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:52,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07e7ab8c-5e06-45cc-a211-f608a42ef1ba/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:48:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:53,173 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:53,175 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:54,337 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:54,349 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:54,349 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:48:54,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:54 BoogieIcfgContainer [2023-11-06 22:48:54,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:54,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:54,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:54,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:54,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:51" (1/3) ... [2023-11-06 22:48:54,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fb2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:54, skipping insertion in model container [2023-11-06 22:48:54,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:52" (2/3) ... [2023-11-06 22:48:54,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fb2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:54, skipping insertion in model container [2023-11-06 22:48:54,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:54" (3/3) ... [2023-11-06 22:48:54,362 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-06 22:48:54,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:54,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:48:54,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:54,486 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ac180b6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:54,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:48:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 337 states, 328 states have (on average 1.7896341463414633) internal successors, (587), 336 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-06 22:48:54,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:54,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:54,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:54,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash 767655198, now seen corresponding path program 1 times [2023-11-06 22:48:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:54,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613076918] [2023-11-06 22:48:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:54,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:55,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613076918] [2023-11-06 22:48:55,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613076918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:55,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:55,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:55,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047497390] [2023-11-06 22:48:55,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:55,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:55,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:55,348 INFO L87 Difference]: Start difference. First operand has 337 states, 328 states have (on average 1.7896341463414633) internal successors, (587), 336 states have internal predecessors, (587), 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 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2023-11-06 22:48:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:55,528 INFO L93 Difference]: Finished difference Result 635 states and 1067 transitions. [2023-11-06 22:48:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:55,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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 106 [2023-11-06 22:48:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:55,552 INFO L225 Difference]: With dead ends: 635 [2023-11-06 22:48:55,552 INFO L226 Difference]: Without dead ends: 460 [2023-11-06 22:48:55,557 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 [2023-11-06 22:48:55,561 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 244 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:55,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1108 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:48:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-06 22:48:55,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2023-11-06 22:48:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.6477024070021882) internal successors, (753), 457 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 753 transitions. [2023-11-06 22:48:55,635 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 753 transitions. Word has length 106 [2023-11-06 22:48:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:55,636 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 753 transitions. [2023-11-06 22:48:55,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2023-11-06 22:48:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 753 transitions. [2023-11-06 22:48:55,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 22:48:55,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:55,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:55,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:48:55,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:55,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash -383361066, now seen corresponding path program 1 times [2023-11-06 22:48:55,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:55,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841202026] [2023-11-06 22:48:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:55,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:55,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:55,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841202026] [2023-11-06 22:48:55,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841202026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:55,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:55,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773068508] [2023-11-06 22:48:55,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:55,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:55,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:55,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:55,891 INFO L87 Difference]: Start difference. First operand 458 states and 753 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:55,941 INFO L93 Difference]: Finished difference Result 992 states and 1621 transitions. [2023-11-06 22:48:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:55,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2023-11-06 22:48:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:55,947 INFO L225 Difference]: With dead ends: 992 [2023-11-06 22:48:55,947 INFO L226 Difference]: Without dead ends: 715 [2023-11-06 22:48:55,950 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 [2023-11-06 22:48:55,951 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 209 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:55,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1045 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:48:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-06 22:48:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 713. [2023-11-06 22:48:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.6376404494382022) internal successors, (1166), 712 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1166 transitions. [2023-11-06 22:48:56,007 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1166 transitions. Word has length 109 [2023-11-06 22:48:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:56,008 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1166 transitions. [2023-11-06 22:48:56,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1166 transitions. [2023-11-06 22:48:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 22:48:56,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:56,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:48:56,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:56,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1484591587, now seen corresponding path program 1 times [2023-11-06 22:48:56,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:56,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11969046] [2023-11-06 22:48:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:56,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:56,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11969046] [2023-11-06 22:48:56,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11969046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:56,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:56,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152266955] [2023-11-06 22:48:56,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:56,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:56,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:56,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:56,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:56,264 INFO L87 Difference]: Start difference. First operand 713 states and 1166 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:56,353 INFO L93 Difference]: Finished difference Result 1737 states and 2824 transitions. [2023-11-06 22:48:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:56,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2023-11-06 22:48:56,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:56,364 INFO L225 Difference]: With dead ends: 1737 [2023-11-06 22:48:56,364 INFO L226 Difference]: Without dead ends: 1205 [2023-11-06 22:48:56,370 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 [2023-11-06 22:48:56,374 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 202 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:56,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1046 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:48:56,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-11-06 22:48:56,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1203. [2023-11-06 22:48:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.6256239600665559) internal successors, (1954), 1202 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1954 transitions. [2023-11-06 22:48:56,464 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1954 transitions. Word has length 112 [2023-11-06 22:48:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:56,469 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1954 transitions. [2023-11-06 22:48:56,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1954 transitions. [2023-11-06 22:48:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-06 22:48:56,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:56,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:56,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:48:56,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:56,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2071299369, now seen corresponding path program 1 times [2023-11-06 22:48:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:56,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566236014] [2023-11-06 22:48:56,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:56,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:56,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:56,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566236014] [2023-11-06 22:48:56,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566236014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:56,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:56,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:48:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261531996] [2023-11-06 22:48:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:56,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:56,703 INFO L87 Difference]: Start difference. First operand 1203 states and 1954 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:56,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:56,859 INFO L93 Difference]: Finished difference Result 3167 states and 5116 transitions. [2023-11-06 22:48:56,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:56,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2023-11-06 22:48:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:56,876 INFO L225 Difference]: With dead ends: 3167 [2023-11-06 22:48:56,876 INFO L226 Difference]: Without dead ends: 2145 [2023-11-06 22:48:56,878 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 [2023-11-06 22:48:56,880 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 195 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:56,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1047 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:48:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2023-11-06 22:48:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2143. [2023-11-06 22:48:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2143 states, 2142 states have (on average 1.6125116713352008) internal successors, (3454), 2142 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 3454 transitions. [2023-11-06 22:48:57,006 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 3454 transitions. Word has length 115 [2023-11-06 22:48:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:57,007 INFO L495 AbstractCegarLoop]: Abstraction has 2143 states and 3454 transitions. [2023-11-06 22:48:57,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 3454 transitions. [2023-11-06 22:48:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 22:48:57,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:57,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:57,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:48:57,012 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:57,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:57,013 INFO L85 PathProgramCache]: Analyzing trace with hash 895641604, now seen corresponding path program 1 times [2023-11-06 22:48:57,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:57,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233038384] [2023-11-06 22:48:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:57,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:57,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:57,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233038384] [2023-11-06 22:48:57,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233038384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:57,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:57,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:48:57,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001082690] [2023-11-06 22:48:57,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:57,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:48:57,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:48:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:57,302 INFO L87 Difference]: Start difference. First operand 2143 states and 3454 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:58,674 INFO L93 Difference]: Finished difference Result 11219 states and 18162 transitions. [2023-11-06 22:48:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:48:58,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 118 [2023-11-06 22:48:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:58,741 INFO L225 Difference]: With dead ends: 11219 [2023-11-06 22:48:58,742 INFO L226 Difference]: Without dead ends: 9233 [2023-11-06 22:48:58,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:48:58,752 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 2040 mSDsluCounter, 4296 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 4835 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:58,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 4835 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:48:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9233 states. [2023-11-06 22:48:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9233 to 3922. [2023-11-06 22:48:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3921 states have (on average 1.6184646773782199) internal successors, (6346), 3921 states have internal predecessors, (6346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6346 transitions. [2023-11-06 22:48:59,346 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6346 transitions. Word has length 118 [2023-11-06 22:48:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:59,347 INFO L495 AbstractCegarLoop]: Abstraction has 3922 states and 6346 transitions. [2023-11-06 22:48:59,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:48:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6346 transitions. [2023-11-06 22:48:59,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 22:48:59,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:59,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:59,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:48:59,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:59,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1928023900, now seen corresponding path program 1 times [2023-11-06 22:48:59,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:59,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315626790] [2023-11-06 22:48:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:59,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:59,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:59,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315626790] [2023-11-06 22:48:59,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315626790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:59,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:59,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:48:59,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392308099] [2023-11-06 22:48:59,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:59,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:48:59,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:59,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:48:59,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:48:59,518 INFO L87 Difference]: Start difference. First operand 3922 states and 6346 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:00,518 INFO L93 Difference]: Finished difference Result 11507 states and 18643 transitions. [2023-11-06 22:49:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:49:00,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2023-11-06 22:49:00,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:00,564 INFO L225 Difference]: With dead ends: 11507 [2023-11-06 22:49:00,564 INFO L226 Difference]: Without dead ends: 7766 [2023-11-06 22:49:00,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:00,572 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 690 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:00,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1801 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:00,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2023-11-06 22:49:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 5820. [2023-11-06 22:49:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5820 states, 5819 states have (on average 1.6160852380134043) internal successors, (9404), 5819 states have internal predecessors, (9404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 9404 transitions. [2023-11-06 22:49:01,389 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 9404 transitions. Word has length 119 [2023-11-06 22:49:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:01,390 INFO L495 AbstractCegarLoop]: Abstraction has 5820 states and 9404 transitions. [2023-11-06 22:49:01,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 9404 transitions. [2023-11-06 22:49:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:49:01,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:01,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:01,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:49:01,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:01,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:01,398 INFO L85 PathProgramCache]: Analyzing trace with hash -230071643, now seen corresponding path program 1 times [2023-11-06 22:49:01,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:01,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106764174] [2023-11-06 22:49:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:01,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:01,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:01,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106764174] [2023-11-06 22:49:01,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106764174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:01,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:01,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:01,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528375149] [2023-11-06 22:49:01,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:01,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:01,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:01,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:01,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:01,542 INFO L87 Difference]: Start difference. First operand 5820 states and 9404 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:02,900 INFO L93 Difference]: Finished difference Result 12785 states and 20626 transitions. [2023-11-06 22:49:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:02,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 120 [2023-11-06 22:49:02,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:02,951 INFO L225 Difference]: With dead ends: 12785 [2023-11-06 22:49:02,958 INFO L226 Difference]: Without dead ends: 8846 [2023-11-06 22:49:02,967 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 [2023-11-06 22:49:02,970 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 217 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1209 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 [2023-11-06 22:49:02,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1209 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:02,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8846 states. [2023-11-06 22:49:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8846 to 8844. [2023-11-06 22:49:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8844 states, 8843 states have (on average 1.606694560669456) internal successors, (14208), 8843 states have internal predecessors, (14208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8844 states to 8844 states and 14208 transitions. [2023-11-06 22:49:04,119 INFO L78 Accepts]: Start accepts. Automaton has 8844 states and 14208 transitions. Word has length 120 [2023-11-06 22:49:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:04,119 INFO L495 AbstractCegarLoop]: Abstraction has 8844 states and 14208 transitions. [2023-11-06 22:49:04,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 8844 states and 14208 transitions. [2023-11-06 22:49:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:49:04,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:04,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:04,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:49:04,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:04,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:04,124 INFO L85 PathProgramCache]: Analyzing trace with hash -93787815, now seen corresponding path program 1 times [2023-11-06 22:49:04,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:04,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754324342] [2023-11-06 22:49:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:04,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:04,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:04,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754324342] [2023-11-06 22:49:04,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754324342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:04,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:04,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:04,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764390189] [2023-11-06 22:49:04,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:04,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:04,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:04,242 INFO L87 Difference]: Start difference. First operand 8844 states and 14208 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:05,955 INFO L93 Difference]: Finished difference Result 17051 states and 27377 transitions. [2023-11-06 22:49:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:05,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 120 [2023-11-06 22:49:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:05,991 INFO L225 Difference]: With dead ends: 17051 [2023-11-06 22:49:05,991 INFO L226 Difference]: Without dead ends: 12377 [2023-11-06 22:49:06,001 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 [2023-11-06 22:49:06,003 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 203 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1129 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 [2023-11-06 22:49:06,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1129 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12377 states. [2023-11-06 22:49:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12377 to 12375. [2023-11-06 22:49:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12375 states, 12374 states have (on average 1.5981897527072895) internal successors, (19776), 12374 states have internal predecessors, (19776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12375 states to 12375 states and 19776 transitions. [2023-11-06 22:49:07,484 INFO L78 Accepts]: Start accepts. Automaton has 12375 states and 19776 transitions. Word has length 120 [2023-11-06 22:49:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:07,485 INFO L495 AbstractCegarLoop]: Abstraction has 12375 states and 19776 transitions. [2023-11-06 22:49:07,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 12375 states and 19776 transitions. [2023-11-06 22:49:07,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:49:07,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:07,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:07,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:49:07,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:07,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:07,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2090250357, now seen corresponding path program 1 times [2023-11-06 22:49:07,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:07,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220272715] [2023-11-06 22:49:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:07,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:07,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220272715] [2023-11-06 22:49:07,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220272715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:07,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:07,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:07,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012555046] [2023-11-06 22:49:07,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:07,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:07,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:07,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:07,619 INFO L87 Difference]: Start difference. First operand 12375 states and 19776 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:09,686 INFO L93 Difference]: Finished difference Result 23661 states and 37791 transitions. [2023-11-06 22:49:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 120 [2023-11-06 22:49:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:09,738 INFO L225 Difference]: With dead ends: 23661 [2023-11-06 22:49:09,738 INFO L226 Difference]: Without dead ends: 17151 [2023-11-06 22:49:09,750 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 [2023-11-06 22:49:09,750 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 196 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1096 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 [2023-11-06 22:49:09,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1096 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17151 states. [2023-11-06 22:49:11,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17151 to 17149. [2023-11-06 22:49:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17149 states, 17148 states have (on average 1.5886400746442735) internal successors, (27242), 17148 states have internal predecessors, (27242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17149 states to 17149 states and 27242 transitions. [2023-11-06 22:49:11,931 INFO L78 Accepts]: Start accepts. Automaton has 17149 states and 27242 transitions. Word has length 120 [2023-11-06 22:49:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:11,931 INFO L495 AbstractCegarLoop]: Abstraction has 17149 states and 27242 transitions. [2023-11-06 22:49:11,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 17149 states and 27242 transitions. [2023-11-06 22:49:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:49:11,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:11,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:11,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:49:11,934 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:11,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1191149015, now seen corresponding path program 1 times [2023-11-06 22:49:11,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:11,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918139443] [2023-11-06 22:49:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:11,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:12,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:12,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918139443] [2023-11-06 22:49:12,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918139443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:12,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:12,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:12,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207476617] [2023-11-06 22:49:12,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:12,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:12,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:12,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:12,037 INFO L87 Difference]: Start difference. First operand 17149 states and 27242 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:14,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:14,490 INFO L93 Difference]: Finished difference Result 32477 states and 51556 transitions. [2023-11-06 22:49:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:14,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 120 [2023-11-06 22:49:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:14,558 INFO L225 Difference]: With dead ends: 32477 [2023-11-06 22:49:14,558 INFO L226 Difference]: Without dead ends: 23404 [2023-11-06 22:49:14,577 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 [2023-11-06 22:49:14,577 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 210 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1181 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 [2023-11-06 22:49:14,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1181 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23404 states. [2023-11-06 22:49:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23404 to 23402. [2023-11-06 22:49:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23402 states, 23401 states have (on average 1.5777530874748942) internal successors, (36921), 23401 states have internal predecessors, (36921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23402 states to 23402 states and 36921 transitions. [2023-11-06 22:49:17,284 INFO L78 Accepts]: Start accepts. Automaton has 23402 states and 36921 transitions. Word has length 120 [2023-11-06 22:49:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:17,284 INFO L495 AbstractCegarLoop]: Abstraction has 23402 states and 36921 transitions. [2023-11-06 22:49:17,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 23402 states and 36921 transitions. [2023-11-06 22:49:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-06 22:49:17,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:17,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:17,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:49:17,288 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:17,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2138040448, now seen corresponding path program 1 times [2023-11-06 22:49:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:17,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850025701] [2023-11-06 22:49:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:17,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:17,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850025701] [2023-11-06 22:49:17,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850025701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:17,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:17,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:49:17,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022377904] [2023-11-06 22:49:17,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:17,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:17,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:17,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:17,878 INFO L87 Difference]: Start difference. First operand 23402 states and 36921 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:23,076 INFO L93 Difference]: Finished difference Result 38753 states and 60760 transitions. [2023-11-06 22:49:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:49:23,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 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 128 [2023-11-06 22:49:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:23,189 INFO L225 Difference]: With dead ends: 38753 [2023-11-06 22:49:23,190 INFO L226 Difference]: Without dead ends: 38751 [2023-11-06 22:49:23,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:23,207 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 453 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:23,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 2450 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38751 states. [2023-11-06 22:49:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38751 to 23722. [2023-11-06 22:49:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23722 states, 23721 states have (on average 1.566544412124278) internal successors, (37160), 23721 states have internal predecessors, (37160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23722 states to 23722 states and 37160 transitions. [2023-11-06 22:49:26,293 INFO L78 Accepts]: Start accepts. Automaton has 23722 states and 37160 transitions. Word has length 128 [2023-11-06 22:49:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:26,293 INFO L495 AbstractCegarLoop]: Abstraction has 23722 states and 37160 transitions. [2023-11-06 22:49:26,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 23722 states and 37160 transitions. [2023-11-06 22:49:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-06 22:49:26,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:26,299 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:26,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:49:26,300 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:26,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash -813457913, now seen corresponding path program 1 times [2023-11-06 22:49:26,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:26,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541941759] [2023-11-06 22:49:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:26,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:49:26,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541941759] [2023-11-06 22:49:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541941759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:26,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:49:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141482746] [2023-11-06 22:49:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:26,717 INFO L87 Difference]: Start difference. First operand 23722 states and 37160 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:37,415 INFO L93 Difference]: Finished difference Result 78066 states and 122325 transitions. [2023-11-06 22:49:37,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:49:37,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 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 162 [2023-11-06 22:49:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:37,547 INFO L225 Difference]: With dead ends: 78066 [2023-11-06 22:49:37,547 INFO L226 Difference]: Without dead ends: 68452 [2023-11-06 22:49:37,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:49:37,575 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 1395 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:37,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 2859 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:49:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68452 states. [2023-11-06 22:49:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68452 to 39798. [2023-11-06 22:49:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39798 states, 39797 states have (on average 1.5623288187551825) internal successors, (62176), 39797 states have internal predecessors, (62176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39798 states to 39798 states and 62176 transitions. [2023-11-06 22:49:44,258 INFO L78 Accepts]: Start accepts. Automaton has 39798 states and 62176 transitions. Word has length 162 [2023-11-06 22:49:44,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:44,258 INFO L495 AbstractCegarLoop]: Abstraction has 39798 states and 62176 transitions. [2023-11-06 22:49:44,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:44,259 INFO L276 IsEmpty]: Start isEmpty. Operand 39798 states and 62176 transitions. [2023-11-06 22:49:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-06 22:49:44,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:44,268 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:44,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:49:44,269 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:44,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:44,270 INFO L85 PathProgramCache]: Analyzing trace with hash -677174085, now seen corresponding path program 1 times [2023-11-06 22:49:44,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:44,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847827034] [2023-11-06 22:49:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:44,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:49:44,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:44,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847827034] [2023-11-06 22:49:44,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847827034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:44,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:44,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:49:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627564989] [2023-11-06 22:49:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:44,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:44,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:44,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:44,603 INFO L87 Difference]: Start difference. First operand 39798 states and 62176 transitions. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:56,936 INFO L93 Difference]: Finished difference Result 91887 states and 143906 transitions. [2023-11-06 22:49:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:49:56,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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 162 [2023-11-06 22:49:56,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:57,094 INFO L225 Difference]: With dead ends: 91887 [2023-11-06 22:49:57,094 INFO L226 Difference]: Without dead ends: 76345 [2023-11-06 22:49:57,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:49:57,132 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 1502 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:57,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 2988 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:49:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76345 states.