./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6abe6deda42e5cd6457f2c2e337625778fbe4d0886f20421ed4af9df8a9f44a2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:13:15,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:13:15,343 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:13:15,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:13:15,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:13:15,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:13:15,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:13:15,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:13:15,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:13:15,370 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:13:15,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:13:15,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:13:15,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:13:15,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:13:15,373 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:13:15,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:13:15,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:13:15,375 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:13:15,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:13:15,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:13:15,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:13:15,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:13:15,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:13:15,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:13:15,378 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:13:15,379 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:13:15,379 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:13:15,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:13:15,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:13:15,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:13:15,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:13:15,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:13:15,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:13:15,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:13:15,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:13:15,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:13:15,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:13:15,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:13:15,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:13:15,383 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:13:15,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:13:15,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:13:15,384 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_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6abe6deda42e5cd6457f2c2e337625778fbe4d0886f20421ed4af9df8a9f44a2 [2023-11-29 06:13:15,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:13:15,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:13:15,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:13:15,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:13:15,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:13:15,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem12_label48.c [2023-11-29 06:13:18,411 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:13:18,773 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:13:18,773 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/sv-benchmarks/c/eca-rers2012/Problem12_label48.c [2023-11-29 06:13:18,796 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/data/89ba28619/cc2c935fc4ea40ef81b99b19968032f2/FLAG3144d56b2 [2023-11-29 06:13:18,808 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/data/89ba28619/cc2c935fc4ea40ef81b99b19968032f2 [2023-11-29 06:13:18,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:13:18,812 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:13:18,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:13:18,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:13:18,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:13:18,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:13:18" (1/1) ... [2023-11-29 06:13:18,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f6d289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:18, skipping insertion in model container [2023-11-29 06:13:18,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:13:18" (1/1) ... [2023-11-29 06:13:18,930 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:13:19,100 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_83403b12-4583-482b-89c3-b66074341f52/sv-benchmarks/c/eca-rers2012/Problem12_label48.c[1668,1681] [2023-11-29 06:13:20,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:13:20,063 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:13:20,077 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_83403b12-4583-482b-89c3-b66074341f52/sv-benchmarks/c/eca-rers2012/Problem12_label48.c[1668,1681] [2023-11-29 06:13:20,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:13:20,612 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:13:20,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20 WrapperNode [2023-11-29 06:13:20,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:13:20,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:13:20,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:13:20,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:13:20,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:20,666 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:20,896 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4758 [2023-11-29 06:13:20,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:13:20,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:13:20,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:13:20,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:13:20,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:20,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:21,006 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:21,130 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 06:13:21,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:21,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:21,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:21,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:21,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:21,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:21,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:13:21,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:13:21,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:13:21,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:13:21,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (1/1) ... [2023-11-29 06:13:21,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:13:21,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:13:21,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:13:21,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:13:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:13:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:13:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:13:21,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:13:21,607 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:13:21,611 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:13:25,903 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:13:25,966 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:13:25,967 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:13:25,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:13:25 BoogieIcfgContainer [2023-11-29 06:13:25,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:13:25,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:13:25,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:13:25,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:13:25,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:13:18" (1/3) ... [2023-11-29 06:13:25,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a1313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:13:25, skipping insertion in model container [2023-11-29 06:13:25,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:13:20" (2/3) ... [2023-11-29 06:13:25,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a1313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:13:25, skipping insertion in model container [2023-11-29 06:13:25,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:13:25" (3/3) ... [2023-11-29 06:13:25,976 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2023-11-29 06:13:25,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:13:25,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:13:26,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:13:26,070 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1643f926, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:13:26,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:13:26,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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) [2023-11-29 06:13:26,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 06:13:26,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:26,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:26,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:26,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash 902928907, now seen corresponding path program 1 times [2023-11-29 06:13:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:26,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063707334] [2023-11-29 06:13:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:26,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:26,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:26,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063707334] [2023-11-29 06:13:26,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063707334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:26,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:26,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:13:26,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574672088] [2023-11-29 06:13:26,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:26,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:13:26,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:13:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:13:26,275 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-29 06:13:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:26,356 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-11-29 06:13:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:13:26,358 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-11-29 06:13:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:26,375 INFO L225 Difference]: With dead ends: 1511 [2023-11-29 06:13:26,376 INFO L226 Difference]: Without dead ends: 754 [2023-11-29 06:13:26,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:13:26,385 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:26,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:13:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-29 06:13:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-11-29 06:13:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 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) [2023-11-29 06:13:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-11-29 06:13:26,456 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 9 [2023-11-29 06:13:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:26,457 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-11-29 06:13:26,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-29 06:13:26,457 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-11-29 06:13:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 06:13:26,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:26,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:26,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:13:26,458 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:26,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:26,459 INFO L85 PathProgramCache]: Analyzing trace with hash 995675993, now seen corresponding path program 1 times [2023-11-29 06:13:26,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:26,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069349154] [2023-11-29 06:13:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:26,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:26,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:26,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069349154] [2023-11-29 06:13:26,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069349154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:26,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:26,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:13:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139035928] [2023-11-29 06:13:26,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:26,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:26,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:26,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:26,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:26,535 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-29 06:13:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:29,971 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-11-29 06:13:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:29,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-11-29 06:13:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:29,981 INFO L225 Difference]: With dead ends: 2258 [2023-11-29 06:13:29,982 INFO L226 Difference]: Without dead ends: 1505 [2023-11-29 06:13:29,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:29,984 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 808 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:29,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 426 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 06:13:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-11-29 06:13:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-11-29 06:13:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6389627659574468) internal successors, (2465), 1504 states have internal predecessors, (2465), 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) [2023-11-29 06:13:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2465 transitions. [2023-11-29 06:13:30,031 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2465 transitions. Word has length 9 [2023-11-29 06:13:30,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:30,031 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2465 transitions. [2023-11-29 06:13:30,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-29 06:13:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2465 transitions. [2023-11-29 06:13:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 06:13:30,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:30,035 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:13:30,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:13:30,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:30,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1239332906, now seen corresponding path program 1 times [2023-11-29 06:13:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:30,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468165462] [2023-11-29 06:13:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:30,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:30,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:30,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468165462] [2023-11-29 06:13:30,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468165462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:13:30,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974181834] [2023-11-29 06:13:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:30,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:13:30,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:13:30,355 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:13:30,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:13:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:30,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:13:30,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:13:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:30,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:13:30,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974181834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:30,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:13:30,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 06:13:30,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003497570] [2023-11-29 06:13:30,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:30,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:30,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:13:30,484 INFO L87 Difference]: Start difference. First operand 1505 states and 2465 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:33,938 INFO L93 Difference]: Finished difference Result 4511 states and 7392 transitions. [2023-11-29 06:13:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:33,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 06:13:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:33,956 INFO L225 Difference]: With dead ends: 4511 [2023-11-29 06:13:33,956 INFO L226 Difference]: Without dead ends: 3007 [2023-11-29 06:13:33,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:13:33,960 INFO L413 NwaCegarLoop]: 1381 mSDtfsCounter, 769 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:33,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1388 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 06:13:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2023-11-29 06:13:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2023-11-29 06:13:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.363606121091151) internal successors, (4099), 3006 states have internal predecessors, (4099), 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) [2023-11-29 06:13:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4099 transitions. [2023-11-29 06:13:34,035 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4099 transitions. Word has length 80 [2023-11-29 06:13:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:34,035 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4099 transitions. [2023-11-29 06:13:34,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:13:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4099 transitions. [2023-11-29 06:13:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 06:13:34,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:34,039 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:13:34,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:13:34,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:13:34,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:34,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash -813283492, now seen corresponding path program 1 times [2023-11-29 06:13:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:34,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090964471] [2023-11-29 06:13:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:34,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:34,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:34,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090964471] [2023-11-29 06:13:34,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090964471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:34,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:34,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:13:34,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263055128] [2023-11-29 06:13:34,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:34,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:34,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:34,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:34,402 INFO L87 Difference]: Start difference. First operand 3007 states and 4099 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2023-11-29 06:13:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:37,500 INFO L93 Difference]: Finished difference Result 7515 states and 10660 transitions. [2023-11-29 06:13:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:37,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 83 [2023-11-29 06:13:37,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:37,520 INFO L225 Difference]: With dead ends: 7515 [2023-11-29 06:13:37,521 INFO L226 Difference]: Without dead ends: 4509 [2023-11-29 06:13:37,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:37,525 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 748 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:37,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 518 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 06:13:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2023-11-29 06:13:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4509. [2023-11-29 06:13:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4509 states, 4508 states have (on average 1.3251996450754215) internal successors, (5974), 4508 states have internal predecessors, (5974), 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) [2023-11-29 06:13:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 5974 transitions. [2023-11-29 06:13:37,596 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 5974 transitions. Word has length 83 [2023-11-29 06:13:37,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:37,597 INFO L495 AbstractCegarLoop]: Abstraction has 4509 states and 5974 transitions. [2023-11-29 06:13:37,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2023-11-29 06:13:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 5974 transitions. [2023-11-29 06:13:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 06:13:37,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:37,599 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:13:37,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:13:37,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:37,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1802311801, now seen corresponding path program 1 times [2023-11-29 06:13:37,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:37,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815600379] [2023-11-29 06:13:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:37,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:37,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815600379] [2023-11-29 06:13:37,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815600379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:37,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:37,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:13:37,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600289091] [2023-11-29 06:13:37,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:37,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:13:37,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:37,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:13:37,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:13:37,859 INFO L87 Difference]: Start difference. First operand 4509 states and 5974 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 06:13:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:42,744 INFO L93 Difference]: Finished difference Result 14274 states and 18790 transitions. [2023-11-29 06:13:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:13:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2023-11-29 06:13:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:42,785 INFO L225 Difference]: With dead ends: 14274 [2023-11-29 06:13:42,785 INFO L226 Difference]: Without dead ends: 9766 [2023-11-29 06:13:42,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:13:42,792 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 2161 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4750 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 4750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:42,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 183 Invalid, 5528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 4750 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 06:13:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-11-29 06:13:42,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9015. [2023-11-29 06:13:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 9014 states have (on average 1.3039715997337475) internal successors, (11754), 9014 states have internal predecessors, (11754), 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) [2023-11-29 06:13:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 11754 transitions. [2023-11-29 06:13:42,996 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 11754 transitions. Word has length 94 [2023-11-29 06:13:42,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:42,996 INFO L495 AbstractCegarLoop]: Abstraction has 9015 states and 11754 transitions. [2023-11-29 06:13:42,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 06:13:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 11754 transitions. [2023-11-29 06:13:42,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 06:13:42,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:43,000 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:13:43,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:13:43,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:43,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1274828124, now seen corresponding path program 1 times [2023-11-29 06:13:43,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:43,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499530419] [2023-11-29 06:13:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:43,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:43,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:43,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499530419] [2023-11-29 06:13:43,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499530419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:43,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:43,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:13:43,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660216149] [2023-11-29 06:13:43,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:43,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:13:43,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:43,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:13:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:13:43,312 INFO L87 Difference]: Start difference. First operand 9015 states and 11754 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-11-29 06:13:47,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:47,547 INFO L93 Difference]: Finished difference Result 22574 states and 30208 transitions. [2023-11-29 06:13:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:13:47,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2023-11-29 06:13:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:47,594 INFO L225 Difference]: With dead ends: 22574 [2023-11-29 06:13:47,594 INFO L226 Difference]: Without dead ends: 12772 [2023-11-29 06:13:47,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:13:47,605 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 4470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:47,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 711 Invalid, 4470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3807 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 06:13:47,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2023-11-29 06:13:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 12770. [2023-11-29 06:13:47,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12770 states, 12769 states have (on average 1.2174015193045657) internal successors, (15545), 12769 states have internal predecessors, (15545), 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) [2023-11-29 06:13:47,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12770 states to 12770 states and 15545 transitions. [2023-11-29 06:13:47,930 INFO L78 Accepts]: Start accepts. Automaton has 12770 states and 15545 transitions. Word has length 148 [2023-11-29 06:13:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:47,930 INFO L495 AbstractCegarLoop]: Abstraction has 12770 states and 15545 transitions. [2023-11-29 06:13:47,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-11-29 06:13:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 12770 states and 15545 transitions. [2023-11-29 06:13:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-29 06:13:47,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:47,936 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:13:47,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:13:47,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:47,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash -447595537, now seen corresponding path program 1 times [2023-11-29 06:13:47,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:47,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836623192] [2023-11-29 06:13:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:47,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 41 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:13:48,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:48,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836623192] [2023-11-29 06:13:48,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836623192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:13:48,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032082772] [2023-11-29 06:13:48,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:48,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:13:48,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:13:48,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:13:48,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:13:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:48,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:13:48,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:13:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 06:13:48,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:13:48,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032082772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:48,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:13:48,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-29 06:13:48,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625308083] [2023-11-29 06:13:48,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:48,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:48,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:13:48,648 INFO L87 Difference]: Start difference. First operand 12770 states and 15545 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-11-29 06:13:51,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:51,844 INFO L93 Difference]: Finished difference Result 32298 states and 40260 transitions. [2023-11-29 06:13:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:51,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 239 [2023-11-29 06:13:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:51,877 INFO L225 Difference]: With dead ends: 32298 [2023-11-29 06:13:51,877 INFO L226 Difference]: Without dead ends: 20280 [2023-11-29 06:13:51,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:13:51,888 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 802 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:51,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 969 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 06:13:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2023-11-29 06:13:52,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 18778. [2023-11-29 06:13:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18778 states, 18777 states have (on average 1.2516908984395803) internal successors, (23503), 18777 states have internal predecessors, (23503), 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) [2023-11-29 06:13:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18778 states to 18778 states and 23503 transitions. [2023-11-29 06:13:52,082 INFO L78 Accepts]: Start accepts. Automaton has 18778 states and 23503 transitions. Word has length 239 [2023-11-29 06:13:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:52,083 INFO L495 AbstractCegarLoop]: Abstraction has 18778 states and 23503 transitions. [2023-11-29 06:13:52,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-11-29 06:13:52,084 INFO L276 IsEmpty]: Start isEmpty. Operand 18778 states and 23503 transitions. [2023-11-29 06:13:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-29 06:13:52,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:52,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:13:52,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:13:52,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:13:52,287 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:52,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1383221762, now seen corresponding path program 1 times [2023-11-29 06:13:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:52,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281030340] [2023-11-29 06:13:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:52,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-29 06:13:52,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:52,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281030340] [2023-11-29 06:13:52,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281030340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:52,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:52,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:13:52,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940444932] [2023-11-29 06:13:52,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:52,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:52,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:52,554 INFO L87 Difference]: Start difference. First operand 18778 states and 23503 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-11-29 06:13:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:55,709 INFO L93 Difference]: Finished difference Result 44314 states and 57007 transitions. [2023-11-29 06:13:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:55,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 249 [2023-11-29 06:13:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:55,750 INFO L225 Difference]: With dead ends: 44314 [2023-11-29 06:13:55,750 INFO L226 Difference]: Without dead ends: 26288 [2023-11-29 06:13:55,765 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 [2023-11-29 06:13:55,765 INFO L413 NwaCegarLoop]: 1211 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:55,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1218 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 06:13:55,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2023-11-29 06:13:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 26288. [2023-11-29 06:13:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26288 states, 26287 states have (on average 1.2187012591775401) internal successors, (32036), 26287 states have internal predecessors, (32036), 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) [2023-11-29 06:13:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26288 states to 26288 states and 32036 transitions. [2023-11-29 06:13:56,142 INFO L78 Accepts]: Start accepts. Automaton has 26288 states and 32036 transitions. Word has length 249 [2023-11-29 06:13:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:13:56,143 INFO L495 AbstractCegarLoop]: Abstraction has 26288 states and 32036 transitions. [2023-11-29 06:13:56,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-11-29 06:13:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 26288 states and 32036 transitions. [2023-11-29 06:13:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-29 06:13:56,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:13:56,146 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:13:56,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:13:56,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:13:56,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:13:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1564398950, now seen corresponding path program 1 times [2023-11-29 06:13:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:13:56,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79310189] [2023-11-29 06:13:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:13:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:13:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:13:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 06:13:56,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:56,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79310189] [2023-11-29 06:13:56,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79310189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:13:56,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:13:56,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:13:56,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712839492] [2023-11-29 06:13:56,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:13:56,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:13:56,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:56,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:13:56,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:56,315 INFO L87 Difference]: Start difference. First operand 26288 states and 32036 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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) [2023-11-29 06:13:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:13:59,544 INFO L93 Difference]: Finished difference Result 71352 states and 88216 transitions. [2023-11-29 06:13:59,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:13:59,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 264 [2023-11-29 06:13:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:13:59,578 INFO L225 Difference]: With dead ends: 71352 [2023-11-29 06:13:59,578 INFO L226 Difference]: Without dead ends: 42812 [2023-11-29 06:13:59,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:13:59,593 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:13:59,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 319 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 06:13:59,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42812 states. [2023-11-29 06:13:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42812 to 39806. [2023-11-29 06:13:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39806 states, 39805 states have (on average 1.1773144077377213) internal successors, (46863), 39805 states have internal predecessors, (46863), 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) [2023-11-29 06:14:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39806 states to 39806 states and 46863 transitions. [2023-11-29 06:14:00,122 INFO L78 Accepts]: Start accepts. Automaton has 39806 states and 46863 transitions. Word has length 264 [2023-11-29 06:14:00,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:00,122 INFO L495 AbstractCegarLoop]: Abstraction has 39806 states and 46863 transitions. [2023-11-29 06:14:00,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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) [2023-11-29 06:14:00,122 INFO L276 IsEmpty]: Start isEmpty. Operand 39806 states and 46863 transitions. [2023-11-29 06:14:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-11-29 06:14:00,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:00,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:14:00,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:14:00,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:00,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash 324764373, now seen corresponding path program 1 times [2023-11-29 06:14:00,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:00,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58447522] [2023-11-29 06:14:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:00,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:14:00,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:00,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58447522] [2023-11-29 06:14:00,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58447522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:00,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:14:00,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:14:00,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618926510] [2023-11-29 06:14:00,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:00,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:00,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:00,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:00,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:14:00,361 INFO L87 Difference]: Start difference. First operand 39806 states and 46863 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2023-11-29 06:14:03,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:03,665 INFO L93 Difference]: Finished difference Result 100639 states and 118186 transitions. [2023-11-29 06:14:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:03,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 267 [2023-11-29 06:14:03,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:03,715 INFO L225 Difference]: With dead ends: 100639 [2023-11-29 06:14:03,715 INFO L226 Difference]: Without dead ends: 61585 [2023-11-29 06:14:03,737 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 [2023-11-29 06:14:03,738 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 637 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:03,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1169 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 06:14:03,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61585 states. [2023-11-29 06:14:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61585 to 61585. [2023-11-29 06:14:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61585 states, 61584 states have (on average 1.1574110158482722) internal successors, (71278), 61584 states have internal predecessors, (71278), 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) [2023-11-29 06:14:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61585 states to 61585 states and 71278 transitions. [2023-11-29 06:14:04,538 INFO L78 Accepts]: Start accepts. Automaton has 61585 states and 71278 transitions. Word has length 267 [2023-11-29 06:14:04,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:04,539 INFO L495 AbstractCegarLoop]: Abstraction has 61585 states and 71278 transitions. [2023-11-29 06:14:04,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2023-11-29 06:14:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 61585 states and 71278 transitions. [2023-11-29 06:14:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-11-29 06:14:04,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:04,555 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:14:04,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:14:04,555 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:04,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:04,556 INFO L85 PathProgramCache]: Analyzing trace with hash -680322853, now seen corresponding path program 1 times [2023-11-29 06:14:04,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:04,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104926563] [2023-11-29 06:14:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:04,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 06:14:06,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:06,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104926563] [2023-11-29 06:14:06,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104926563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:06,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:14:06,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:14:06,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806642881] [2023-11-29 06:14:06,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:06,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:14:06,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:06,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:14:06,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:14:06,066 INFO L87 Difference]: Start difference. First operand 61585 states and 71278 transitions. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 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) [2023-11-29 06:14:11,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:11,558 INFO L93 Difference]: Finished difference Result 160719 states and 188665 transitions. [2023-11-29 06:14:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:14:11,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 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 408 [2023-11-29 06:14:11,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:11,662 INFO L225 Difference]: With dead ends: 160719 [2023-11-29 06:14:11,662 INFO L226 Difference]: Without dead ends: 99886 [2023-11-29 06:14:11,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:14:11,693 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1413 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3616 mSolverCounterSat, 1287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 4903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1287 IncrementalHoareTripleChecker+Valid, 3616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:11,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 123 Invalid, 4903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1287 Valid, 3616 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 06:14:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99886 states. [2023-11-29 06:14:12,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99886 to 84115. [2023-11-29 06:14:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84115 states, 84114 states have (on average 1.170364029769123) internal successors, (98444), 84114 states have internal predecessors, (98444), 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) [2023-11-29 06:14:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84115 states to 84115 states and 98444 transitions. [2023-11-29 06:14:12,785 INFO L78 Accepts]: Start accepts. Automaton has 84115 states and 98444 transitions. Word has length 408 [2023-11-29 06:14:12,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:12,786 INFO L495 AbstractCegarLoop]: Abstraction has 84115 states and 98444 transitions. [2023-11-29 06:14:12,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 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) [2023-11-29 06:14:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 84115 states and 98444 transitions. [2023-11-29 06:14:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-11-29 06:14:12,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:12,792 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:14:12,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:14:12,793 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:12,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash -904415285, now seen corresponding path program 1 times [2023-11-29 06:14:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:12,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800684945] [2023-11-29 06:14:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-29 06:14:13,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:13,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800684945] [2023-11-29 06:14:13,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800684945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:14:13,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:14:13,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:14:13,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625800279] [2023-11-29 06:14:13,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:14:13,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:14:13,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:13,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:14:13,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:14:13,250 INFO L87 Difference]: Start difference. First operand 84115 states and 98444 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-11-29 06:14:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:16,896 INFO L93 Difference]: Finished difference Result 202024 states and 237759 transitions. [2023-11-29 06:14:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:14:16,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 423 [2023-11-29 06:14:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:17,008 INFO L225 Difference]: With dead ends: 202024 [2023-11-29 06:14:17,008 INFO L226 Difference]: Without dead ends: 118661 [2023-11-29 06:14:17,147 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 [2023-11-29 06:14:17,148 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 786 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:17,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1241 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 06:14:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118661 states. [2023-11-29 06:14:18,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118661 to 111902. [2023-11-29 06:14:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111902 states, 111901 states have (on average 1.1402042877186085) internal successors, (127590), 111901 states have internal predecessors, (127590), 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) [2023-11-29 06:14:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111902 states to 111902 states and 127590 transitions. [2023-11-29 06:14:18,738 INFO L78 Accepts]: Start accepts. Automaton has 111902 states and 127590 transitions. Word has length 423 [2023-11-29 06:14:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:18,740 INFO L495 AbstractCegarLoop]: Abstraction has 111902 states and 127590 transitions. [2023-11-29 06:14:18,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-11-29 06:14:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 111902 states and 127590 transitions. [2023-11-29 06:14:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-29 06:14:18,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:18,769 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:14:18,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:14:18,769 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:18,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1431888949, now seen corresponding path program 1 times [2023-11-29 06:14:18,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:18,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751538369] [2023-11-29 06:14:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:18,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 373 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 06:14:19,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751538369] [2023-11-29 06:14:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751538369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:14:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372589278] [2023-11-29 06:14:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:19,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:14:19,577 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:14:19,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:14:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:19,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:14:19,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:14:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 373 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 06:14:24,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:14:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 373 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 06:14:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372589278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:14:27,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:14:27,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 06:14:27,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414814203] [2023-11-29 06:14:27,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:14:27,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:14:27,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:14:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:14:27,563 INFO L87 Difference]: Start difference. First operand 111902 states and 127590 transitions. Second operand has 11 states, 11 states have (on average 84.27272727272727) internal successors, (927), 10 states have internal predecessors, (927), 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) [2023-11-29 06:14:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:14:50,090 INFO L93 Difference]: Finished difference Result 263620 states and 300183 transitions. [2023-11-29 06:14:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:14:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 84.27272727272727) internal successors, (927), 10 states have internal predecessors, (927), 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 431 [2023-11-29 06:14:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:14:50,211 INFO L225 Difference]: With dead ends: 263620 [2023-11-29 06:14:50,211 INFO L226 Difference]: Without dead ends: 150217 [2023-11-29 06:14:50,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=357, Unknown=1, NotChecked=0, Total=552 [2023-11-29 06:14:50,235 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 14610 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 18277 mSolverCounterSat, 2772 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14610 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 21055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2772 IncrementalHoareTripleChecker+Valid, 18277 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:14:50,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14610 Valid, 122 Invalid, 21055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2772 Valid, 18277 Invalid, 6 Unknown, 0 Unchecked, 20.5s Time] [2023-11-29 06:14:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150217 states. [2023-11-29 06:14:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150217 to 134432. [2023-11-29 06:14:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134432 states, 134431 states have (on average 1.0703557959101695) internal successors, (143889), 134431 states have internal predecessors, (143889), 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) [2023-11-29 06:14:51,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134432 states to 134432 states and 143889 transitions. [2023-11-29 06:14:51,793 INFO L78 Accepts]: Start accepts. Automaton has 134432 states and 143889 transitions. Word has length 431 [2023-11-29 06:14:51,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:14:51,793 INFO L495 AbstractCegarLoop]: Abstraction has 134432 states and 143889 transitions. [2023-11-29 06:14:51,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 84.27272727272727) internal successors, (927), 10 states have internal predecessors, (927), 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) [2023-11-29 06:14:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 134432 states and 143889 transitions. [2023-11-29 06:14:51,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-29 06:14:51,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:14:51,799 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:14:51,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:14:52,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 06:14:52,000 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:14:52,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:14:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1660231573, now seen corresponding path program 1 times [2023-11-29 06:14:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:14:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400603978] [2023-11-29 06:14:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:14:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 376 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 06:14:53,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:14:53,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400603978] [2023-11-29 06:14:53,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400603978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:14:53,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619352442] [2023-11-29 06:14:53,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:14:53,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:14:53,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:14:53,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:14:53,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:14:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:14:53,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:14:53,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:14:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 376 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 06:14:54,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:14:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 287 proven. 143 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 06:14:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619352442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:14:57,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:14:57,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 06:14:57,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217388883] [2023-11-29 06:14:57,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:14:57,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:14:57,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:14:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:14:57,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:14:57,602 INFO L87 Difference]: Start difference. First operand 134432 states and 143889 transitions. Second operand has 11 states, 11 states have (on average 85.36363636363636) internal successors, (939), 10 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:15:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:15,293 INFO L93 Difference]: Finished difference Result 280881 states and 300094 transitions. [2023-11-29 06:15:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:15:15,293 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 85.36363636363636) internal successors, (939), 10 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 435 [2023-11-29 06:15:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:15,430 INFO L225 Difference]: With dead ends: 280881 [2023-11-29 06:15:15,430 INFO L226 Difference]: Without dead ends: 147201 [2023-11-29 06:15:15,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 863 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=331, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:15:15,466 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12092 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 21420 mSolverCounterSat, 2160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12092 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 23580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2160 IncrementalHoareTripleChecker+Valid, 21420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:15,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12092 Valid, 144 Invalid, 23580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2160 Valid, 21420 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2023-11-29 06:15:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147201 states. [2023-11-29 06:15:16,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147201 to 137436. [2023-11-29 06:15:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137436 states, 137435 states have (on average 1.0606541274056827) internal successors, (145771), 137435 states have internal predecessors, (145771), 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) [2023-11-29 06:15:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137436 states to 137436 states and 145771 transitions. [2023-11-29 06:15:16,911 INFO L78 Accepts]: Start accepts. Automaton has 137436 states and 145771 transitions. Word has length 435 [2023-11-29 06:15:16,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:16,911 INFO L495 AbstractCegarLoop]: Abstraction has 137436 states and 145771 transitions. [2023-11-29 06:15:16,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 85.36363636363636) internal successors, (939), 10 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:15:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 137436 states and 145771 transitions. [2023-11-29 06:15:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 06:15:16,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:16,922 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:15:16,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:15:17,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:15:17,122 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:17,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash 283521577, now seen corresponding path program 1 times [2023-11-29 06:15:17,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:17,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591635045] [2023-11-29 06:15:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:17,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 689 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-29 06:15:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:17,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591635045] [2023-11-29 06:15:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591635045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:17,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:17,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:15:17,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346193577] [2023-11-29 06:15:17,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:17,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:17,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:17,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:17,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:15:17,673 INFO L87 Difference]: Start difference. First operand 137436 states and 145771 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-11-29 06:15:21,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:21,307 INFO L93 Difference]: Finished difference Result 280879 states and 297920 transitions. [2023-11-29 06:15:21,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:15:21,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 516 [2023-11-29 06:15:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:21,444 INFO L225 Difference]: With dead ends: 280879 [2023-11-29 06:15:21,444 INFO L226 Difference]: Without dead ends: 144195 [2023-11-29 06:15:21,487 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 [2023-11-29 06:15:21,488 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 694 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:21,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1183 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 06:15:21,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144195 states. [2023-11-29 06:15:22,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144195 to 138938. [2023-11-29 06:15:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138938 states, 138937 states have (on average 1.0603726869012573) internal successors, (147325), 138937 states have internal predecessors, (147325), 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) [2023-11-29 06:15:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138938 states to 138938 states and 147325 transitions. [2023-11-29 06:15:23,134 INFO L78 Accepts]: Start accepts. Automaton has 138938 states and 147325 transitions. Word has length 516 [2023-11-29 06:15:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:23,134 INFO L495 AbstractCegarLoop]: Abstraction has 138938 states and 147325 transitions. [2023-11-29 06:15:23,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-11-29 06:15:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 138938 states and 147325 transitions. [2023-11-29 06:15:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-11-29 06:15:23,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:23,143 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:15:23,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:15:23,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:23,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:23,144 INFO L85 PathProgramCache]: Analyzing trace with hash 141034466, now seen corresponding path program 1 times [2023-11-29 06:15:23,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:23,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017188784] [2023-11-29 06:15:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:23,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-29 06:15:23,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:23,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017188784] [2023-11-29 06:15:23,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017188784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:23,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:23,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:15:23,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910746832] [2023-11-29 06:15:23,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:23,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:23,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:23,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:15:23,774 INFO L87 Difference]: Start difference. First operand 138938 states and 147325 transitions. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-11-29 06:15:27,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:27,426 INFO L93 Difference]: Finished difference Result 315425 states and 335281 transitions. [2023-11-29 06:15:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:15:27,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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 517 [2023-11-29 06:15:27,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:27,579 INFO L225 Difference]: With dead ends: 315425 [2023-11-29 06:15:27,579 INFO L226 Difference]: Without dead ends: 177239 [2023-11-29 06:15:27,627 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 [2023-11-29 06:15:27,627 INFO L413 NwaCegarLoop]: 1270 mSDtfsCounter, 689 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:27,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1277 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 06:15:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177239 states. [2023-11-29 06:15:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177239 to 172733. [2023-11-29 06:15:29,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172733 states, 172732 states have (on average 1.054512192297895) internal successors, (182148), 172732 states have internal predecessors, (182148), 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) [2023-11-29 06:15:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172733 states to 172733 states and 182148 transitions. [2023-11-29 06:15:29,757 INFO L78 Accepts]: Start accepts. Automaton has 172733 states and 182148 transitions. Word has length 517 [2023-11-29 06:15:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:29,758 INFO L495 AbstractCegarLoop]: Abstraction has 172733 states and 182148 transitions. [2023-11-29 06:15:29,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2023-11-29 06:15:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 172733 states and 182148 transitions. [2023-11-29 06:15:29,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2023-11-29 06:15:29,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:29,769 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:15:29,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:15:29,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:29,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash -68695815, now seen corresponding path program 1 times [2023-11-29 06:15:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170827920] [2023-11-29 06:15:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 06:15:30,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:30,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170827920] [2023-11-29 06:15:30,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170827920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:30,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:30,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:15:30,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351986603] [2023-11-29 06:15:30,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:30,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:30,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:30,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:15:30,410 INFO L87 Difference]: Start difference. First operand 172733 states and 182148 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-11-29 06:15:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:34,289 INFO L93 Difference]: Finished difference Result 375505 states and 397088 transitions. [2023-11-29 06:15:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:15:34,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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 539 [2023-11-29 06:15:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:34,518 INFO L225 Difference]: With dead ends: 375505 [2023-11-29 06:15:34,518 INFO L226 Difference]: Without dead ends: 203524 [2023-11-29 06:15:34,580 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 [2023-11-29 06:15:34,580 INFO L413 NwaCegarLoop]: 1269 mSDtfsCounter, 564 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:34,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1276 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 2221 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 06:15:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203524 states. [2023-11-29 06:15:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203524 to 198267. [2023-11-29 06:15:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198267 states, 198266 states have (on average 1.048031432519948) internal successors, (207789), 198266 states have internal predecessors, (207789), 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) [2023-11-29 06:15:37,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198267 states to 198267 states and 207789 transitions. [2023-11-29 06:15:37,041 INFO L78 Accepts]: Start accepts. Automaton has 198267 states and 207789 transitions. Word has length 539 [2023-11-29 06:15:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:37,042 INFO L495 AbstractCegarLoop]: Abstraction has 198267 states and 207789 transitions. [2023-11-29 06:15:37,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-11-29 06:15:37,042 INFO L276 IsEmpty]: Start isEmpty. Operand 198267 states and 207789 transitions. [2023-11-29 06:15:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2023-11-29 06:15:37,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:37,051 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:15:37,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:15:37,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:37,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:37,052 INFO L85 PathProgramCache]: Analyzing trace with hash -544700843, now seen corresponding path program 1 times [2023-11-29 06:15:37,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:37,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99553877] [2023-11-29 06:15:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:37,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-29 06:15:37,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:37,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99553877] [2023-11-29 06:15:37,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99553877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:37,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:37,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:15:37,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763506675] [2023-11-29 06:15:37,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:37,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:37,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:37,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:15:37,494 INFO L87 Difference]: Start difference. First operand 198267 states and 207789 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2023-11-29 06:15:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:41,280 INFO L93 Difference]: Finished difference Result 407798 states and 427081 transitions. [2023-11-29 06:15:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:15:41,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 563 [2023-11-29 06:15:41,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:41,665 INFO L225 Difference]: With dead ends: 407798 [2023-11-29 06:15:41,665 INFO L226 Difference]: Without dead ends: 210283 [2023-11-29 06:15:41,723 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 [2023-11-29 06:15:41,724 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 721 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:41,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 215 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 06:15:41,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210283 states. [2023-11-29 06:15:43,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210283 to 195263. [2023-11-29 06:15:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195263 states, 195262 states have (on average 1.0474695537278118) internal successors, (204531), 195262 states have internal predecessors, (204531), 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) [2023-11-29 06:15:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195263 states to 195263 states and 204531 transitions. [2023-11-29 06:15:44,203 INFO L78 Accepts]: Start accepts. Automaton has 195263 states and 204531 transitions. Word has length 563 [2023-11-29 06:15:44,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:44,203 INFO L495 AbstractCegarLoop]: Abstraction has 195263 states and 204531 transitions. [2023-11-29 06:15:44,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2023-11-29 06:15:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 195263 states and 204531 transitions. [2023-11-29 06:15:44,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2023-11-29 06:15:44,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:44,218 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-11-29 06:15:44,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:15:44,218 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:44,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:44,219 INFO L85 PathProgramCache]: Analyzing trace with hash -780779536, now seen corresponding path program 1 times [2023-11-29 06:15:44,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:44,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246262972] [2023-11-29 06:15:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:44,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-11-29 06:15:44,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:44,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246262972] [2023-11-29 06:15:44,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246262972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:44,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:44,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:15:44,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691184227] [2023-11-29 06:15:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:44,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:44,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:15:44,523 INFO L87 Difference]: Start difference. First operand 195263 states and 204531 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2023-11-29 06:15:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:48,313 INFO L93 Difference]: Finished difference Result 391276 states and 409758 transitions. [2023-11-29 06:15:48,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:15:48,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 596 [2023-11-29 06:15:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:48,517 INFO L225 Difference]: With dead ends: 391276 [2023-11-29 06:15:48,518 INFO L226 Difference]: Without dead ends: 194512 [2023-11-29 06:15:48,798 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 [2023-11-29 06:15:48,799 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 772 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:48,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1002 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 06:15:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194512 states. [2023-11-29 06:15:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194512 to 184749. [2023-11-29 06:15:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184749 states, 184748 states have (on average 1.036536254790309) internal successors, (191498), 184748 states have internal predecessors, (191498), 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) [2023-11-29 06:15:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184749 states to 184749 states and 191498 transitions. [2023-11-29 06:15:50,718 INFO L78 Accepts]: Start accepts. Automaton has 184749 states and 191498 transitions. Word has length 596 [2023-11-29 06:15:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:50,719 INFO L495 AbstractCegarLoop]: Abstraction has 184749 states and 191498 transitions. [2023-11-29 06:15:50,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2023-11-29 06:15:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 184749 states and 191498 transitions. [2023-11-29 06:15:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2023-11-29 06:15:50,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:50,729 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-29 06:15:50,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:15:50,729 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:50,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash 113271307, now seen corresponding path program 1 times [2023-11-29 06:15:50,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:50,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671253505] [2023-11-29 06:15:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:50,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-29 06:15:51,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:51,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671253505] [2023-11-29 06:15:51,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671253505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:51,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:51,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:15:51,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025981068] [2023-11-29 06:15:51,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:51,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:51,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:51,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:15:51,560 INFO L87 Difference]: Start difference. First operand 184749 states and 191498 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2023-11-29 06:15:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:15:55,741 INFO L93 Difference]: Finished difference Result 386019 states and 400012 transitions. [2023-11-29 06:15:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:15:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 598 [2023-11-29 06:15:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:15:55,934 INFO L225 Difference]: With dead ends: 386019 [2023-11-29 06:15:55,934 INFO L226 Difference]: Without dead ends: 202022 [2023-11-29 06:15:55,990 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 [2023-11-29 06:15:55,991 INFO L413 NwaCegarLoop]: 1189 mSDtfsCounter, 696 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:15:55,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1196 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 06:15:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202022 states. [2023-11-29 06:15:57,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202022 to 196014. [2023-11-29 06:15:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196014 states, 196013 states have (on average 1.032849861998949) internal successors, (202452), 196013 states have internal predecessors, (202452), 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) [2023-11-29 06:15:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196014 states to 196014 states and 202452 transitions. [2023-11-29 06:15:58,328 INFO L78 Accepts]: Start accepts. Automaton has 196014 states and 202452 transitions. Word has length 598 [2023-11-29 06:15:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:15:58,329 INFO L495 AbstractCegarLoop]: Abstraction has 196014 states and 202452 transitions. [2023-11-29 06:15:58,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2023-11-29 06:15:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 196014 states and 202452 transitions. [2023-11-29 06:15:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-11-29 06:15:58,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:15:58,348 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 06:15:58,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:15:58,349 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:15:58,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:15:58,349 INFO L85 PathProgramCache]: Analyzing trace with hash 344276707, now seen corresponding path program 1 times [2023-11-29 06:15:58,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:15:58,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390689415] [2023-11-29 06:15:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:15:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:15:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:15:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 06:15:58,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:15:58,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390689415] [2023-11-29 06:15:58,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390689415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:15:58,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:15:58,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:15:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376463324] [2023-11-29 06:15:58,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:15:58,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:15:58,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:15:58,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:15:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:15:58,894 INFO L87 Difference]: Start difference. First operand 196014 states and 202452 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2023-11-29 06:16:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:03,121 INFO L93 Difference]: Finished difference Result 431079 states and 445445 transitions. [2023-11-29 06:16:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:16:03,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 671 [2023-11-29 06:16:03,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:03,627 INFO L225 Difference]: With dead ends: 431079 [2023-11-29 06:16:03,627 INFO L226 Difference]: Without dead ends: 235817 [2023-11-29 06:16:03,701 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 [2023-11-29 06:16:03,702 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 713 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:03,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1110 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 06:16:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235817 states. [2023-11-29 06:16:05,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235817 to 232062. [2023-11-29 06:16:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232062 states, 232061 states have (on average 1.030539384041265) internal successors, (239148), 232061 states have internal predecessors, (239148), 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) [2023-11-29 06:16:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232062 states to 232062 states and 239148 transitions. [2023-11-29 06:16:06,393 INFO L78 Accepts]: Start accepts. Automaton has 232062 states and 239148 transitions. Word has length 671 [2023-11-29 06:16:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:06,394 INFO L495 AbstractCegarLoop]: Abstraction has 232062 states and 239148 transitions. [2023-11-29 06:16:06,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2023-11-29 06:16:06,394 INFO L276 IsEmpty]: Start isEmpty. Operand 232062 states and 239148 transitions. [2023-11-29 06:16:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 06:16:06,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:06,409 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:06,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 06:16:06,409 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:06,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1466035172, now seen corresponding path program 1 times [2023-11-29 06:16:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346620472] [2023-11-29 06:16:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:06,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2023-11-29 06:16:07,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:07,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346620472] [2023-11-29 06:16:07,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346620472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:07,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:07,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:16:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875499124] [2023-11-29 06:16:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:07,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:16:07,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:07,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:16:07,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:16:07,469 INFO L87 Difference]: Start difference. First operand 232062 states and 239148 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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) [2023-11-29 06:16:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:11,054 INFO L93 Difference]: Finished difference Result 458115 states and 472172 transitions. [2023-11-29 06:16:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:16:11,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 685 [2023-11-29 06:16:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:11,283 INFO L225 Difference]: With dead ends: 458115 [2023-11-29 06:16:11,283 INFO L226 Difference]: Without dead ends: 226805 [2023-11-29 06:16:11,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:16:11,602 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 755 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:11,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 139 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 06:16:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226805 states. [2023-11-29 06:16:13,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226805 to 224552. [2023-11-29 06:16:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224552 states, 224551 states have (on average 1.0253260951855034) internal successors, (230238), 224551 states have internal predecessors, (230238), 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) [2023-11-29 06:16:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224552 states to 224552 states and 230238 transitions. [2023-11-29 06:16:14,209 INFO L78 Accepts]: Start accepts. Automaton has 224552 states and 230238 transitions. Word has length 685 [2023-11-29 06:16:14,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:14,209 INFO L495 AbstractCegarLoop]: Abstraction has 224552 states and 230238 transitions. [2023-11-29 06:16:14,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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) [2023-11-29 06:16:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 224552 states and 230238 transitions. [2023-11-29 06:16:14,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 06:16:14,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:14,227 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:14,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 06:16:14,227 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:14,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2084123950, now seen corresponding path program 1 times [2023-11-29 06:16:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396396049] [2023-11-29 06:16:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 1282 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-11-29 06:16:16,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:16,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396396049] [2023-11-29 06:16:16,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396396049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:16,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:16,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:16:16,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464670103] [2023-11-29 06:16:16,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:16,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:16:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:16:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:16:16,146 INFO L87 Difference]: Start difference. First operand 224552 states and 230238 transitions. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 5 states have internal predecessors, (588), 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) [2023-11-29 06:16:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:23,383 INFO L93 Difference]: Finished difference Result 458997 states and 470542 transitions. [2023-11-29 06:16:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:16:23,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 5 states have internal predecessors, (588), 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 751 [2023-11-29 06:16:23,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:23,606 INFO L225 Difference]: With dead ends: 458997 [2023-11-29 06:16:23,606 INFO L226 Difference]: Without dead ends: 235197 [2023-11-29 06:16:23,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:16:23,685 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 2474 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 7219 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 7686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 7219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:23,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 710 Invalid, 7686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 7219 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-29 06:16:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235197 states. [2023-11-29 06:16:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235197 to 224552. [2023-11-29 06:16:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224552 states, 224551 states have (on average 1.0252815618723585) internal successors, (230228), 224551 states have internal predecessors, (230228), 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) [2023-11-29 06:16:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224552 states to 224552 states and 230228 transitions. [2023-11-29 06:16:26,434 INFO L78 Accepts]: Start accepts. Automaton has 224552 states and 230228 transitions. Word has length 751 [2023-11-29 06:16:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:26,435 INFO L495 AbstractCegarLoop]: Abstraction has 224552 states and 230228 transitions. [2023-11-29 06:16:26,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 5 states have internal predecessors, (588), 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) [2023-11-29 06:16:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 224552 states and 230228 transitions. [2023-11-29 06:16:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-29 06:16:26,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:26,448 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:26,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 06:16:26,448 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:26,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash -318422592, now seen corresponding path program 1 times [2023-11-29 06:16:26,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:26,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402947290] [2023-11-29 06:16:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 920 proven. 0 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2023-11-29 06:16:27,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:27,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402947290] [2023-11-29 06:16:27,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402947290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:27,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:27,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:16:27,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374311218] [2023-11-29 06:16:27,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:27,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:16:27,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:27,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:16:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:16:27,415 INFO L87 Difference]: Start difference. First operand 224552 states and 230228 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-11-29 06:16:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:31,632 INFO L93 Difference]: Finished difference Result 465625 states and 477226 transitions. [2023-11-29 06:16:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:16:31,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 780 [2023-11-29 06:16:31,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:31,903 INFO L225 Difference]: With dead ends: 465625 [2023-11-29 06:16:31,904 INFO L226 Difference]: Without dead ends: 241825 [2023-11-29 06:16:31,992 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 [2023-11-29 06:16:31,993 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 603 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:31,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 494 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 06:16:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241825 states. [2023-11-29 06:16:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241825 to 235817. [2023-11-29 06:16:34,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235817 states, 235816 states have (on average 1.0232045323472538) internal successors, (241288), 235816 states have internal predecessors, (241288), 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) [2023-11-29 06:16:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235817 states to 235817 states and 241288 transitions. [2023-11-29 06:16:35,001 INFO L78 Accepts]: Start accepts. Automaton has 235817 states and 241288 transitions. Word has length 780 [2023-11-29 06:16:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:35,002 INFO L495 AbstractCegarLoop]: Abstraction has 235817 states and 241288 transitions. [2023-11-29 06:16:35,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-11-29 06:16:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 235817 states and 241288 transitions. [2023-11-29 06:16:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2023-11-29 06:16:35,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:35,039 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:16:35,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 06:16:35,040 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:35,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1114657909, now seen corresponding path program 1 times [2023-11-29 06:16:35,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:35,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209999734] [2023-11-29 06:16:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:35,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 1698 trivial. 0 not checked. [2023-11-29 06:16:35,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:35,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209999734] [2023-11-29 06:16:35,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209999734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:35,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:16:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975016885] [2023-11-29 06:16:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:35,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:16:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:16:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:16:35,858 INFO L87 Difference]: Start difference. First operand 235817 states and 241288 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2023-11-29 06:16:39,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:39,911 INFO L93 Difference]: Finished difference Result 470131 states and 481063 transitions. [2023-11-29 06:16:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:16:39,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 807 [2023-11-29 06:16:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:40,175 INFO L225 Difference]: With dead ends: 470131 [2023-11-29 06:16:40,175 INFO L226 Difference]: Without dead ends: 235066 [2023-11-29 06:16:40,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:16:40,250 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 845 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:40,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 894 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 06:16:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235066 states. [2023-11-29 06:16:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235066 to 226805. [2023-11-29 06:16:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226805 states, 226804 states have (on average 1.021035784201337) internal successors, (231575), 226804 states have internal predecessors, (231575), 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) [2023-11-29 06:16:42,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226805 states to 226805 states and 231575 transitions. [2023-11-29 06:16:42,690 INFO L78 Accepts]: Start accepts. Automaton has 226805 states and 231575 transitions. Word has length 807 [2023-11-29 06:16:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:42,691 INFO L495 AbstractCegarLoop]: Abstraction has 226805 states and 231575 transitions. [2023-11-29 06:16:42,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2023-11-29 06:16:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 226805 states and 231575 transitions. [2023-11-29 06:16:42,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2023-11-29 06:16:42,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:42,712 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-29 06:16:42,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 06:16:42,712 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:42,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash 50634408, now seen corresponding path program 1 times [2023-11-29 06:16:42,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:42,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836740747] [2023-11-29 06:16:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:42,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1730 backedges. 933 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2023-11-29 06:16:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:43,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836740747] [2023-11-29 06:16:43,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836740747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:43,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:43,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:16:43,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498879480] [2023-11-29 06:16:43,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:43,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:16:43,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:16:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:16:43,079 INFO L87 Difference]: Start difference. First operand 226805 states and 231575 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2023-11-29 06:16:47,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:47,557 INFO L93 Difference]: Finished difference Result 472384 states and 482422 transitions. [2023-11-29 06:16:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:16:47,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 859 [2023-11-29 06:16:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:47,814 INFO L225 Difference]: With dead ends: 472384 [2023-11-29 06:16:47,814 INFO L226 Difference]: Without dead ends: 241074 [2023-11-29 06:16:47,866 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 [2023-11-29 06:16:47,867 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 786 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:47,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 326 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2087 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 06:16:48,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241074 states. [2023-11-29 06:16:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241074 to 168227. [2023-11-29 06:16:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168227 states, 168226 states have (on average 1.0158536730350838) internal successors, (170893), 168226 states have internal predecessors, (170893), 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) [2023-11-29 06:16:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168227 states to 168227 states and 170893 transitions. [2023-11-29 06:16:50,127 INFO L78 Accepts]: Start accepts. Automaton has 168227 states and 170893 transitions. Word has length 859 [2023-11-29 06:16:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:50,128 INFO L495 AbstractCegarLoop]: Abstraction has 168227 states and 170893 transitions. [2023-11-29 06:16:50,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2023-11-29 06:16:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 168227 states and 170893 transitions. [2023-11-29 06:16:50,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2023-11-29 06:16:50,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:50,148 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:16:50,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 06:16:50,148 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:50,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:50,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1719374784, now seen corresponding path program 1 times [2023-11-29 06:16:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:50,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101078394] [2023-11-29 06:16:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 752 proven. 68 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-29 06:16:53,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101078394] [2023-11-29 06:16:53,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101078394] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:16:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819047356] [2023-11-29 06:16:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:53,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:53,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:53,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:53,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:16:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:53,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:16:54,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2023-11-29 06:16:55,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819047356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:55,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:16:55,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 06:16:55,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793969034] [2023-11-29 06:16:55,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:55,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:16:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:16:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:16:55,021 INFO L87 Difference]: Start difference. First operand 168227 states and 170893 transitions. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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) [2023-11-29 06:16:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:58,296 INFO L93 Difference]: Finished difference Result 346216 states and 351772 transitions. [2023-11-29 06:16:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:16:58,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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 873 [2023-11-29 06:16:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:58,454 INFO L225 Difference]: With dead ends: 346216 [2023-11-29 06:16:58,455 INFO L226 Difference]: Without dead ends: 178741 [2023-11-29 06:16:58,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:16:58,517 INFO L413 NwaCegarLoop]: 1178 mSDtfsCounter, 686 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:58,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1185 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 06:16:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178741 states. [2023-11-29 06:17:00,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178741 to 170480. [2023-11-29 06:17:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170480 states, 170479 states have (on average 1.015515107432587) internal successors, (173124), 170479 states have internal predecessors, (173124), 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) [2023-11-29 06:17:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170480 states to 170480 states and 173124 transitions. [2023-11-29 06:17:00,429 INFO L78 Accepts]: Start accepts. Automaton has 170480 states and 173124 transitions. Word has length 873 [2023-11-29 06:17:00,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:17:00,430 INFO L495 AbstractCegarLoop]: Abstraction has 170480 states and 173124 transitions. [2023-11-29 06:17:00,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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) [2023-11-29 06:17:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 170480 states and 173124 transitions. [2023-11-29 06:17:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2023-11-29 06:17:00,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:17:00,450 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-11-29 06:17:00,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:17:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83403b12-4583-482b-89c3-b66074341f52/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 06:17:00,651 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:17:00,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:17:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1816386260, now seen corresponding path program 1 times [2023-11-29 06:17:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:17:00,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357954039] [2023-11-29 06:17:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:17:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:17:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 831 proven. 0 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2023-11-29 06:17:01,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:17:01,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357954039] [2023-11-29 06:17:01,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357954039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:17:01,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:17:01,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:17:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312356904] [2023-11-29 06:17:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:17:01,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:17:01,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:17:01,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:17:01,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:17:01,855 INFO L87 Difference]: Start difference. First operand 170480 states and 173124 transitions. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2023-11-29 06:17:04,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:17:04,885 INFO L93 Difference]: Finished difference Result 346216 states and 351563 transitions. [2023-11-29 06:17:04,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:17:04,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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 881 [2023-11-29 06:17:04,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:17:05,020 INFO L225 Difference]: With dead ends: 346216 [2023-11-29 06:17:05,020 INFO L226 Difference]: Without dead ends: 176488 [2023-11-29 06:17:05,069 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 [2023-11-29 06:17:05,070 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 605 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:17:05,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1202 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 06:17:05,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176488 states. [2023-11-29 06:17:06,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176488 to 171982. [2023-11-29 06:17:06,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171982 states, 171981 states have (on average 1.0152226118001406) internal successors, (174599), 171981 states have internal predecessors, (174599), 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) [2023-11-29 06:17:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171982 states to 171982 states and 174599 transitions. [2023-11-29 06:17:07,035 INFO L78 Accepts]: Start accepts. Automaton has 171982 states and 174599 transitions. Word has length 881 [2023-11-29 06:17:07,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:17:07,036 INFO L495 AbstractCegarLoop]: Abstraction has 171982 states and 174599 transitions. [2023-11-29 06:17:07,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2023-11-29 06:17:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 171982 states and 174599 transitions. [2023-11-29 06:17:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2023-11-29 06:17:07,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:17:07,057 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-11-29 06:17:07,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 06:17:07,058 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:17:07,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:17:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash 782917094, now seen corresponding path program 1 times [2023-11-29 06:17:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:17:07,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152433600] [2023-11-29 06:17:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:17:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:17:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:17:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 1602 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2023-11-29 06:17:08,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:17:08,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152433600] [2023-11-29 06:17:08,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152433600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:17:08,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:17:08,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:17:08,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330146021] [2023-11-29 06:17:08,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:17:08,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:17:08,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:17:08,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:17:08,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:17:08,029 INFO L87 Difference]: Start difference. First operand 171982 states and 174599 transitions. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:17:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:17:11,178 INFO L93 Difference]: Finished difference Result 353726 states and 359103 transitions. [2023-11-29 06:17:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:17:11,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 886 [2023-11-29 06:17:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:17:11,589 INFO L225 Difference]: With dead ends: 353726 [2023-11-29 06:17:11,589 INFO L226 Difference]: Without dead ends: 182496 [2023-11-29 06:17:11,652 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 [2023-11-29 06:17:11,653 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 581 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:17:11,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1160 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time]