./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme --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 0451b84ecb7a9b49daa0d007f78b5b7787a8fa890fb4c838a3b9a1c5be28a03a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:43:43,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:43:43,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:43:43,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:43:43,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:43:43,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:43:43,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:43:43,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:43:43,512 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:43:43,513 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:43:43,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:43:43,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:43:43,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:43:43,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:43:43,517 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:43:43,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:43:43,518 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:43:43,518 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:43:43,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:43:43,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:43:43,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:43:43,521 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:43:43,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:43:43,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:43:43,522 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:43:43,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:43:43,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:43:43,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:43:43,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:43:43,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:43:43,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:43:43,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:43:43,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:43:43,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:43:43,527 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:43:43,527 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:43:43,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:43:43,528 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:43:43,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:43:43,528 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:43:43,528 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:43:43,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:43:43,529 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_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0451b84ecb7a9b49daa0d007f78b5b7787a8fa890fb4c838a3b9a1c5be28a03a [2023-11-26 11:43:43,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:43:43,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:43:43,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:43:43,875 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:43:43,876 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:43:43,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-26 11:43:47,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:43:47,310 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:43:47,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-26 11:43:47,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/data/e442dde9a/ad19e4c3a708468ca6c1aafa7bd7b5f0/FLAG128490034 [2023-11-26 11:43:47,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/data/e442dde9a/ad19e4c3a708468ca6c1aafa7bd7b5f0 [2023-11-26 11:43:47,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:43:47,343 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:43:47,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:47,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:43:47,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:43:47,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a4c611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47, skipping insertion in model container [2023-11-26 11:43:47,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,392 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:43:47,677 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_2c5610b8-1ce9-49d9-a54c-c0584758072f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2023-11-26 11:43:47,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:47,745 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:43:47,780 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_2c5610b8-1ce9-49d9-a54c-c0584758072f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2023-11-26 11:43:47,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:47,815 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:43:47,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47 WrapperNode [2023-11-26 11:43:47,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:47,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:47,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:43:47,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:43:47,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,871 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 342 [2023-11-26 11:43:47,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:47,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:43:47,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:43:47,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:43:47,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,889 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,906 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]. [2023-11-26 11:43:47,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:43:47,929 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:43:47,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:43:47,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:43:47,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:43:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:47,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:43:47,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:43:48,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:43:48,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:43:48,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:43:48,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:43:48,179 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:43:48,181 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:43:48,665 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:43:48,719 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:43:48,720 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:43:48,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:43:48 BoogieIcfgContainer [2023-11-26 11:43:48,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:43:48,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:43:48,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:43:48,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:43:48,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:43:47" (1/3) ... [2023-11-26 11:43:48,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d18b3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:43:48, skipping insertion in model container [2023-11-26 11:43:48,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (2/3) ... [2023-11-26 11:43:48,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d18b3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:43:48, skipping insertion in model container [2023-11-26 11:43:48,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:43:48" (3/3) ... [2023-11-26 11:43:48,732 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-26 11:43:48,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:43:48,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:43:48,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:43:48,811 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;@5193bede, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:43:48,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:43:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:43:48,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:48,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:48,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:48,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -544712237, now seen corresponding path program 1 times [2023-11-26 11:43:48,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:48,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454507140] [2023-11-26 11:43:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:48,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:49,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:49,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454507140] [2023-11-26 11:43:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454507140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:49,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:49,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:43:49,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371176639] [2023-11-26 11:43:49,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:49,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:43:49,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:43:49,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:43:49,370 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:49,431 INFO L93 Difference]: Finished difference Result 186 states and 296 transitions. [2023-11-26 11:43:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:43:49,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-26 11:43:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:49,449 INFO L225 Difference]: With dead ends: 186 [2023-11-26 11:43:49,449 INFO L226 Difference]: Without dead ends: 121 [2023-11-26 11:43:49,453 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 [2023-11-26 11:43:49,457 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 86 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:49,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 259 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:43:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-26 11:43:49,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-11-26 11:43:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.5) internal successors, (177), 118 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 177 transitions. [2023-11-26 11:43:49,509 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 177 transitions. Word has length 36 [2023-11-26 11:43:49,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:49,510 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 177 transitions. [2023-11-26 11:43:49,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:49,510 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 177 transitions. [2023-11-26 11:43:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 11:43:49,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:49,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:49,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:43:49,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:49,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1387798961, now seen corresponding path program 1 times [2023-11-26 11:43:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:49,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118805109] [2023-11-26 11:43:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:49,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118805109] [2023-11-26 11:43:49,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118805109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:49,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:49,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:43:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843247938] [2023-11-26 11:43:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:43:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:49,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:43:49,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:43:49,664 INFO L87 Difference]: Start difference. First operand 119 states and 177 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:49,696 INFO L93 Difference]: Finished difference Result 287 states and 441 transitions. [2023-11-26 11:43:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:43:49,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-26 11:43:49,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:49,700 INFO L225 Difference]: With dead ends: 287 [2023-11-26 11:43:49,700 INFO L226 Difference]: Without dead ends: 187 [2023-11-26 11:43:49,701 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 [2023-11-26 11:43:49,703 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 72 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:49,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:43:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-26 11:43:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2023-11-26 11:43:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.5217391304347827) internal successors, (280), 184 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 280 transitions. [2023-11-26 11:43:49,724 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 280 transitions. Word has length 37 [2023-11-26 11:43:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:49,725 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 280 transitions. [2023-11-26 11:43:49,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 280 transitions. [2023-11-26 11:43:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 11:43:49,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:49,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:49,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:43:49,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:49,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash -312459046, now seen corresponding path program 1 times [2023-11-26 11:43:49,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:49,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214197131] [2023-11-26 11:43:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:49,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:50,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:50,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214197131] [2023-11-26 11:43:50,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214197131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:50,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:50,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:43:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042880353] [2023-11-26 11:43:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:50,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:43:50,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:50,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:43:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:43:50,035 INFO L87 Difference]: Start difference. First operand 185 states and 280 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:50,200 INFO L93 Difference]: Finished difference Result 849 states and 1324 transitions. [2023-11-26 11:43:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:43:50,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-11-26 11:43:50,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:50,211 INFO L225 Difference]: With dead ends: 849 [2023-11-26 11:43:50,212 INFO L226 Difference]: Without dead ends: 683 [2023-11-26 11:43:50,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:43:50,221 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 462 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:50,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 618 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:43:50,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-11-26 11:43:50,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 349. [2023-11-26 11:43:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.528735632183908) internal successors, (532), 348 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 532 transitions. [2023-11-26 11:43:50,284 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 532 transitions. Word has length 38 [2023-11-26 11:43:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:50,287 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 532 transitions. [2023-11-26 11:43:50,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 532 transitions. [2023-11-26 11:43:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 11:43:50,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:50,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:50,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:43:50,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:50,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:50,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1115752148, now seen corresponding path program 1 times [2023-11-26 11:43:50,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:50,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982299026] [2023-11-26 11:43:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:50,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:50,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:50,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982299026] [2023-11-26 11:43:50,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982299026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:50,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:50,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:43:50,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032735226] [2023-11-26 11:43:50,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:50,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:43:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:50,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:43:50,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:43:50,514 INFO L87 Difference]: Start difference. First operand 349 states and 532 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:50,619 INFO L93 Difference]: Finished difference Result 1227 states and 1887 transitions. [2023-11-26 11:43:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:43:50,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2023-11-26 11:43:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:50,627 INFO L225 Difference]: With dead ends: 1227 [2023-11-26 11:43:50,627 INFO L226 Difference]: Without dead ends: 897 [2023-11-26 11:43:50,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:43:50,640 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 228 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:50,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 330 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:43:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-11-26 11:43:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 893. [2023-11-26 11:43:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.5291479820627802) internal successors, (1364), 892 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1364 transitions. [2023-11-26 11:43:50,679 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1364 transitions. Word has length 39 [2023-11-26 11:43:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:50,681 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1364 transitions. [2023-11-26 11:43:50,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1364 transitions. [2023-11-26 11:43:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-26 11:43:50,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:50,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:50,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:43:50,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:50,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash -91127901, now seen corresponding path program 1 times [2023-11-26 11:43:50,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:50,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271156429] [2023-11-26 11:43:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:50,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:50,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271156429] [2023-11-26 11:43:50,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271156429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:50,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:50,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:43:50,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951086565] [2023-11-26 11:43:50,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:50,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:43:50,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:43:50,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:43:50,795 INFO L87 Difference]: Start difference. First operand 893 states and 1364 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:50,968 INFO L93 Difference]: Finished difference Result 2641 states and 4054 transitions. [2023-11-26 11:43:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:43:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-11-26 11:43:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:50,980 INFO L225 Difference]: With dead ends: 2641 [2023-11-26 11:43:50,980 INFO L226 Difference]: Without dead ends: 1767 [2023-11-26 11:43:50,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:43:50,983 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 472 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:50,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 135 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:43:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2023-11-26 11:43:51,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1765. [2023-11-26 11:43:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1764 states have (on average 1.526077097505669) internal successors, (2692), 1764 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2692 transitions. [2023-11-26 11:43:51,036 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2692 transitions. Word has length 41 [2023-11-26 11:43:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:51,036 INFO L495 AbstractCegarLoop]: Abstraction has 1765 states and 2692 transitions. [2023-11-26 11:43:51,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2692 transitions. [2023-11-26 11:43:51,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-26 11:43:51,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:51,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:51,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:43:51,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:51,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1535036766, now seen corresponding path program 1 times [2023-11-26 11:43:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993360062] [2023-11-26 11:43:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:51,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:51,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:51,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993360062] [2023-11-26 11:43:51,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993360062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:51,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:51,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:43:51,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375681189] [2023-11-26 11:43:51,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:51,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:43:51,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:51,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:43:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:43:51,317 INFO L87 Difference]: Start difference. First operand 1765 states and 2692 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:51,395 INFO L93 Difference]: Finished difference Result 3607 states and 5461 transitions. [2023-11-26 11:43:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:43:51,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-11-26 11:43:51,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:51,416 INFO L225 Difference]: With dead ends: 3607 [2023-11-26 11:43:51,420 INFO L226 Difference]: Without dead ends: 3605 [2023-11-26 11:43:51,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:43:51,423 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 174 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:51,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 562 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:43:51,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2023-11-26 11:43:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 1861. [2023-11-26 11:43:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 1.4989247311827958) internal successors, (2788), 1860 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2788 transitions. [2023-11-26 11:43:51,497 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2788 transitions. Word has length 41 [2023-11-26 11:43:51,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:51,498 INFO L495 AbstractCegarLoop]: Abstraction has 1861 states and 2788 transitions. [2023-11-26 11:43:51,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2788 transitions. [2023-11-26 11:43:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 11:43:51,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:51,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:51,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:43:51,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:51,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash 352072504, now seen corresponding path program 1 times [2023-11-26 11:43:51,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:51,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467678166] [2023-11-26 11:43:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:51,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:51,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:51,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467678166] [2023-11-26 11:43:51,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467678166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:51,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:51,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:43:51,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373017435] [2023-11-26 11:43:51,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:51,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:43:51,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:51,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:43:51,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:43:51,598 INFO L87 Difference]: Start difference. First operand 1861 states and 2788 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:51,644 INFO L93 Difference]: Finished difference Result 4961 states and 7384 transitions. [2023-11-26 11:43:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:43:51,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-11-26 11:43:51,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:51,662 INFO L225 Difference]: With dead ends: 4961 [2023-11-26 11:43:51,662 INFO L226 Difference]: Without dead ends: 3119 [2023-11-26 11:43:51,665 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 [2023-11-26 11:43:51,666 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 61 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:51,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 199 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:43:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2023-11-26 11:43:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3077. [2023-11-26 11:43:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3076 states have (on average 1.4609882964889467) internal successors, (4494), 3076 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4494 transitions. [2023-11-26 11:43:51,812 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4494 transitions. Word has length 42 [2023-11-26 11:43:51,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:51,812 INFO L495 AbstractCegarLoop]: Abstraction has 3077 states and 4494 transitions. [2023-11-26 11:43:51,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4494 transitions. [2023-11-26 11:43:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 11:43:51,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:51,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:51,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:43:51,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:51,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1282227984, now seen corresponding path program 1 times [2023-11-26 11:43:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:51,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426388424] [2023-11-26 11:43:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:51,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426388424] [2023-11-26 11:43:51,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426388424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:51,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:51,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:43:51,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947983595] [2023-11-26 11:43:51,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:51,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:43:51,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:43:51,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:43:51,879 INFO L87 Difference]: Start difference. First operand 3077 states and 4494 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:51,932 INFO L93 Difference]: Finished difference Result 6140 states and 9028 transitions. [2023-11-26 11:43:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:43:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-11-26 11:43:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:51,958 INFO L225 Difference]: With dead ends: 6140 [2023-11-26 11:43:51,959 INFO L226 Difference]: Without dead ends: 4297 [2023-11-26 11:43:51,963 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 [2023-11-26 11:43:51,965 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 78 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:51,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 262 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:43:51,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2023-11-26 11:43:52,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4295. [2023-11-26 11:43:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4295 states, 4294 states have (on average 1.4457382394038192) internal successors, (6208), 4294 states have internal predecessors, (6208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 6208 transitions. [2023-11-26 11:43:52,113 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 6208 transitions. Word has length 42 [2023-11-26 11:43:52,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:52,113 INFO L495 AbstractCegarLoop]: Abstraction has 4295 states and 6208 transitions. [2023-11-26 11:43:52,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,114 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 6208 transitions. [2023-11-26 11:43:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:43:52,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:52,117 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:43:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:43:52,117 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:52,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash 957083373, now seen corresponding path program 1 times [2023-11-26 11:43:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:52,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366369655] [2023-11-26 11:43:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 11:43:52,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:52,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366369655] [2023-11-26 11:43:52,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366369655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:52,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:52,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:43:52,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394166855] [2023-11-26 11:43:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:52,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:43:52,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:43:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:43:52,247 INFO L87 Difference]: Start difference. First operand 4295 states and 6208 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:52,360 INFO L93 Difference]: Finished difference Result 7675 states and 11194 transitions. [2023-11-26 11:43:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:43:52,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 60 [2023-11-26 11:43:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:52,393 INFO L225 Difference]: With dead ends: 7675 [2023-11-26 11:43:52,394 INFO L226 Difference]: Without dead ends: 6121 [2023-11-26 11:43:52,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:43:52,398 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 324 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:52,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 537 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:43:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2023-11-26 11:43:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 5571. [2023-11-26 11:43:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5571 states, 5570 states have (on average 1.444883303411131) internal successors, (8048), 5570 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5571 states to 5571 states and 8048 transitions. [2023-11-26 11:43:52,587 INFO L78 Accepts]: Start accepts. Automaton has 5571 states and 8048 transitions. Word has length 60 [2023-11-26 11:43:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:52,588 INFO L495 AbstractCegarLoop]: Abstraction has 5571 states and 8048 transitions. [2023-11-26 11:43:52,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5571 states and 8048 transitions. [2023-11-26 11:43:52,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:43:52,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:52,593 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:43:52,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:43:52,593 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:52,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash -919599404, now seen corresponding path program 1 times [2023-11-26 11:43:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:52,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855557404] [2023-11-26 11:43:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:52,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:52,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:52,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855557404] [2023-11-26 11:43:52,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855557404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:52,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:52,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:43:52,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980883002] [2023-11-26 11:43:52,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:52,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:43:52,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:43:52,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:43:52,685 INFO L87 Difference]: Start difference. First operand 5571 states and 8048 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:52,748 INFO L93 Difference]: Finished difference Result 9014 states and 12954 transitions. [2023-11-26 11:43:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:43:52,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-11-26 11:43:52,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:52,798 INFO L225 Difference]: With dead ends: 9014 [2023-11-26 11:43:52,798 INFO L226 Difference]: Without dead ends: 5861 [2023-11-26 11:43:52,802 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 [2023-11-26 11:43:52,803 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 62 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:52,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 241 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:43:52,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2023-11-26 11:43:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 5635. [2023-11-26 11:43:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5635 states, 5634 states have (on average 1.4176428824991125) internal successors, (7987), 5634 states have internal predecessors, (7987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5635 states to 5635 states and 7987 transitions. [2023-11-26 11:43:52,952 INFO L78 Accepts]: Start accepts. Automaton has 5635 states and 7987 transitions. Word has length 60 [2023-11-26 11:43:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:52,952 INFO L495 AbstractCegarLoop]: Abstraction has 5635 states and 7987 transitions. [2023-11-26 11:43:52,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5635 states and 7987 transitions. [2023-11-26 11:43:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:43:52,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:52,955 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:43:52,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:43:52,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:52,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:52,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1832135133, now seen corresponding path program 1 times [2023-11-26 11:43:52,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:52,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017078929] [2023-11-26 11:43:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:52,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 11:43:53,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:53,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017078929] [2023-11-26 11:43:53,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017078929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:53,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:53,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:43:53,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437310317] [2023-11-26 11:43:53,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:53,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:43:53,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:53,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:43:53,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:43:53,097 INFO L87 Difference]: Start difference. First operand 5635 states and 7987 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:53,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:43:53,230 INFO L93 Difference]: Finished difference Result 7818 states and 11178 transitions. [2023-11-26 11:43:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:43:53,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-26 11:43:53,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:43:53,247 INFO L225 Difference]: With dead ends: 7818 [2023-11-26 11:43:53,247 INFO L226 Difference]: Without dead ends: 7004 [2023-11-26 11:43:53,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:43:53,251 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 331 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:43:53,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 499 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:43:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7004 states. [2023-11-26 11:43:53,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7004 to 6431. [2023-11-26 11:43:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6431 states, 6430 states have (on average 1.4194401244167962) internal successors, (9127), 6430 states have internal predecessors, (9127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6431 states to 6431 states and 9127 transitions. [2023-11-26 11:43:53,397 INFO L78 Accepts]: Start accepts. Automaton has 6431 states and 9127 transitions. Word has length 60 [2023-11-26 11:43:53,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:43:53,397 INFO L495 AbstractCegarLoop]: Abstraction has 6431 states and 9127 transitions. [2023-11-26 11:43:53,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 6431 states and 9127 transitions. [2023-11-26 11:43:53,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:43:53,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:43:53,401 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] [2023-11-26 11:43:53,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:43:53,402 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:43:53,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1920820192, now seen corresponding path program 1 times [2023-11-26 11:43:53,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:53,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601849303] [2023-11-26 11:43:53,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:53,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:53,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:53,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601849303] [2023-11-26 11:43:53,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601849303] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:53,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014934046] [2023-11-26 11:43:53,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:53,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:53,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:53,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:53,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:43:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:53,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:43:53,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:43:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:43:54,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:43:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:43:54,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014934046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:43:54,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:43:54,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2023-11-26 11:43:54,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047398789] [2023-11-26 11:43:54,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:43:54,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:43:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:43:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:43:54,379 INFO L87 Difference]: Start difference. First operand 6431 states and 9127 transitions. Second operand has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 13 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:00,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:00,480 INFO L93 Difference]: Finished difference Result 62407 states and 87294 transitions. [2023-11-26 11:44:00,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-11-26 11:44:00,481 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 13 states have internal predecessors, (172), 0 states have call successors, (0), 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 61 [2023-11-26 11:44:00,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:00,613 INFO L225 Difference]: With dead ends: 62407 [2023-11-26 11:44:00,614 INFO L226 Difference]: Without dead ends: 56275 [2023-11-26 11:44:00,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5917 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2322, Invalid=11720, Unknown=0, NotChecked=0, Total=14042 [2023-11-26 11:44:00,636 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 4436 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4436 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:00,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4436 Valid, 2016 Invalid, 2292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 11:44:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56275 states. [2023-11-26 11:44:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56275 to 23733. [2023-11-26 11:44:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23733 states, 23732 states have (on average 1.3861874262599023) internal successors, (32897), 23732 states have internal predecessors, (32897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23733 states to 23733 states and 32897 transitions. [2023-11-26 11:44:01,619 INFO L78 Accepts]: Start accepts. Automaton has 23733 states and 32897 transitions. Word has length 61 [2023-11-26 11:44:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:01,619 INFO L495 AbstractCegarLoop]: Abstraction has 23733 states and 32897 transitions. [2023-11-26 11:44:01,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 13 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 23733 states and 32897 transitions. [2023-11-26 11:44:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:44:01,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:01,625 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:01,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:01,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:44:01,833 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:01,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:01,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1136505805, now seen corresponding path program 1 times [2023-11-26 11:44:01,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:01,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023520106] [2023-11-26 11:44:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:01,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:01,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:01,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023520106] [2023-11-26 11:44:01,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023520106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:01,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:01,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:44:01,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475043107] [2023-11-26 11:44:01,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:01,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:01,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:01,906 INFO L87 Difference]: Start difference. First operand 23733 states and 32897 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:02,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:02,231 INFO L93 Difference]: Finished difference Result 62926 states and 86754 transitions. [2023-11-26 11:44:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:02,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-11-26 11:44:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:02,410 INFO L225 Difference]: With dead ends: 62926 [2023-11-26 11:44:02,410 INFO L226 Difference]: Without dead ends: 42201 [2023-11-26 11:44:02,458 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 [2023-11-26 11:44:02,459 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 57 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:02,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 221 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:44:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42201 states. [2023-11-26 11:44:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42201 to 42150. [2023-11-26 11:44:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42150 states, 42149 states have (on average 1.3608863792735295) internal successors, (57360), 42149 states have internal predecessors, (57360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42150 states to 42150 states and 57360 transitions. [2023-11-26 11:44:03,274 INFO L78 Accepts]: Start accepts. Automaton has 42150 states and 57360 transitions. Word has length 62 [2023-11-26 11:44:03,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:03,275 INFO L495 AbstractCegarLoop]: Abstraction has 42150 states and 57360 transitions. [2023-11-26 11:44:03,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 42150 states and 57360 transitions. [2023-11-26 11:44:03,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-26 11:44:03,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:03,286 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:03,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:44:03,286 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:03,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:03,287 INFO L85 PathProgramCache]: Analyzing trace with hash 618868237, now seen corresponding path program 1 times [2023-11-26 11:44:03,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:03,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454341565] [2023-11-26 11:44:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:03,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:44:03,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:03,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454341565] [2023-11-26 11:44:03,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454341565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:03,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:03,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:44:03,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898789788] [2023-11-26 11:44:03,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:03,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:44:03,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:44:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:44:03,432 INFO L87 Difference]: Start difference. First operand 42150 states and 57360 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:03,971 INFO L93 Difference]: Finished difference Result 65759 states and 90223 transitions. [2023-11-26 11:44:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:44:03,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 63 [2023-11-26 11:44:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:04,118 INFO L225 Difference]: With dead ends: 65759 [2023-11-26 11:44:04,118 INFO L226 Difference]: Without dead ends: 55868 [2023-11-26 11:44:04,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:44:04,148 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 317 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:04,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 552 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:44:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55868 states. [2023-11-26 11:44:05,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55868 to 50962. [2023-11-26 11:44:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50962 states, 50961 states have (on average 1.3574301917152332) internal successors, (69176), 50961 states have internal predecessors, (69176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50962 states to 50962 states and 69176 transitions. [2023-11-26 11:44:05,373 INFO L78 Accepts]: Start accepts. Automaton has 50962 states and 69176 transitions. Word has length 63 [2023-11-26 11:44:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:05,374 INFO L495 AbstractCegarLoop]: Abstraction has 50962 states and 69176 transitions. [2023-11-26 11:44:05,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 50962 states and 69176 transitions. [2023-11-26 11:44:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-26 11:44:05,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:05,527 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:05,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:44:05,527 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:05,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:05,528 INFO L85 PathProgramCache]: Analyzing trace with hash -23816856, now seen corresponding path program 1 times [2023-11-26 11:44:05,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:05,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172370020] [2023-11-26 11:44:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:05,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:05,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172370020] [2023-11-26 11:44:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172370020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:05,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:05,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:44:05,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720164516] [2023-11-26 11:44:05,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:05,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:05,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:05,611 INFO L87 Difference]: Start difference. First operand 50962 states and 69176 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:06,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:06,153 INFO L93 Difference]: Finished difference Result 107653 states and 145657 transitions. [2023-11-26 11:44:06,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:06,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-26 11:44:06,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:06,268 INFO L225 Difference]: With dead ends: 107653 [2023-11-26 11:44:06,268 INFO L226 Difference]: Without dead ends: 58836 [2023-11-26 11:44:06,322 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 [2023-11-26 11:44:06,324 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 59 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:06,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 251 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:44:06,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58836 states. [2023-11-26 11:44:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58836 to 50004. [2023-11-26 11:44:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50004 states, 50003 states have (on average 1.3393996360218388) internal successors, (66974), 50003 states have internal predecessors, (66974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50004 states to 50004 states and 66974 transitions. [2023-11-26 11:44:07,332 INFO L78 Accepts]: Start accepts. Automaton has 50004 states and 66974 transitions. Word has length 63 [2023-11-26 11:44:07,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:07,332 INFO L495 AbstractCegarLoop]: Abstraction has 50004 states and 66974 transitions. [2023-11-26 11:44:07,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 50004 states and 66974 transitions. [2023-11-26 11:44:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 11:44:07,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:07,346 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:07,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:44:07,347 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:07,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:07,347 INFO L85 PathProgramCache]: Analyzing trace with hash 549942170, now seen corresponding path program 1 times [2023-11-26 11:44:07,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:07,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877258656] [2023-11-26 11:44:07,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:07,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:44:07,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877258656] [2023-11-26 11:44:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877258656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:07,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:44:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035028179] [2023-11-26 11:44:07,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:07,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:44:07,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:44:07,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:44:07,448 INFO L87 Difference]: Start difference. First operand 50004 states and 66974 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:08,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:08,219 INFO L93 Difference]: Finished difference Result 116853 states and 156222 transitions. [2023-11-26 11:44:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:44:08,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 65 [2023-11-26 11:44:08,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:08,307 INFO L225 Difference]: With dead ends: 116853 [2023-11-26 11:44:08,307 INFO L226 Difference]: Without dead ends: 66918 [2023-11-26 11:44:08,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:44:08,336 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 428 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:08,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 139 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:44:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66918 states. [2023-11-26 11:44:09,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66918 to 66334. [2023-11-26 11:44:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66334 states, 66333 states have (on average 1.3238508736224806) internal successors, (87815), 66333 states have internal predecessors, (87815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66334 states to 66334 states and 87815 transitions. [2023-11-26 11:44:09,505 INFO L78 Accepts]: Start accepts. Automaton has 66334 states and 87815 transitions. Word has length 65 [2023-11-26 11:44:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:09,506 INFO L495 AbstractCegarLoop]: Abstraction has 66334 states and 87815 transitions. [2023-11-26 11:44:09,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 66334 states and 87815 transitions. [2023-11-26 11:44:09,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 11:44:09,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:09,516 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:09,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:44:09,517 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:09,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:09,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1894911169, now seen corresponding path program 1 times [2023-11-26 11:44:09,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:09,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585960900] [2023-11-26 11:44:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:09,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:09,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585960900] [2023-11-26 11:44:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585960900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311362125] [2023-11-26 11:44:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:09,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:09,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:09,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:09,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:44:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:09,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:44:09,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:10,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:44:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:10,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311362125] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:44:10,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:44:10,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-26 11:44:10,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947595065] [2023-11-26 11:44:10,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:44:10,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:44:10,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:10,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:44:10,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:44:10,229 INFO L87 Difference]: Start difference. First operand 66334 states and 87815 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:11,071 INFO L93 Difference]: Finished difference Result 151940 states and 201183 transitions. [2023-11-26 11:44:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:44:11,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-26 11:44:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:11,226 INFO L225 Difference]: With dead ends: 151940 [2023-11-26 11:44:11,227 INFO L226 Difference]: Without dead ends: 112361 [2023-11-26 11:44:11,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:44:11,271 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 1878 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:11,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 296 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:44:11,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112361 states. [2023-11-26 11:44:12,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112361 to 67593. [2023-11-26 11:44:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67593 states, 67592 states have (on average 1.3339892294946147) internal successors, (90167), 67592 states have internal predecessors, (90167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67593 states to 67593 states and 90167 transitions. [2023-11-26 11:44:12,843 INFO L78 Accepts]: Start accepts. Automaton has 67593 states and 90167 transitions. Word has length 65 [2023-11-26 11:44:12,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:12,843 INFO L495 AbstractCegarLoop]: Abstraction has 67593 states and 90167 transitions. [2023-11-26 11:44:12,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:12,843 INFO L276 IsEmpty]: Start isEmpty. Operand 67593 states and 90167 transitions. [2023-11-26 11:44:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:44:12,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:12,853 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:12,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:13,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:44:13,059 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:13,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1364153390, now seen corresponding path program 1 times [2023-11-26 11:44:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915301634] [2023-11-26 11:44:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:13,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:13,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:13,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915301634] [2023-11-26 11:44:13,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915301634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:13,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:13,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:44:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781588330] [2023-11-26 11:44:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:13,125 INFO L87 Difference]: Start difference. First operand 67593 states and 90167 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:13,337 INFO L93 Difference]: Finished difference Result 74861 states and 99259 transitions. [2023-11-26 11:44:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:13,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-11-26 11:44:13,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:13,388 INFO L225 Difference]: With dead ends: 74861 [2023-11-26 11:44:13,388 INFO L226 Difference]: Without dead ends: 48199 [2023-11-26 11:44:13,404 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 [2023-11-26 11:44:13,405 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 63 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:13,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 271 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:44:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48199 states. [2023-11-26 11:44:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48199 to 48180. [2023-11-26 11:44:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48180 states, 48179 states have (on average 1.3121069345565495) internal successors, (63216), 48179 states have internal predecessors, (63216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48180 states to 48180 states and 63216 transitions. [2023-11-26 11:44:14,263 INFO L78 Accepts]: Start accepts. Automaton has 48180 states and 63216 transitions. Word has length 68 [2023-11-26 11:44:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:14,263 INFO L495 AbstractCegarLoop]: Abstraction has 48180 states and 63216 transitions. [2023-11-26 11:44:14,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:14,263 INFO L276 IsEmpty]: Start isEmpty. Operand 48180 states and 63216 transitions. [2023-11-26 11:44:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:44:14,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:14,272 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:14,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:44:14,272 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:14,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1300390239, now seen corresponding path program 1 times [2023-11-26 11:44:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207731750] [2023-11-26 11:44:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 11:44:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:14,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207731750] [2023-11-26 11:44:14,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207731750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:14,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:14,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:44:14,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025537101] [2023-11-26 11:44:14,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:14,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:44:14,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:44:14,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:44:14,363 INFO L87 Difference]: Start difference. First operand 48180 states and 63216 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:14,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:14,712 INFO L93 Difference]: Finished difference Result 95234 states and 125035 transitions. [2023-11-26 11:44:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:44:14,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 68 [2023-11-26 11:44:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:14,789 INFO L225 Difference]: With dead ends: 95234 [2023-11-26 11:44:14,789 INFO L226 Difference]: Without dead ends: 54299 [2023-11-26 11:44:14,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:44:14,815 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 447 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:14,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 124 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:44:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54299 states. [2023-11-26 11:44:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54299 to 48180. [2023-11-26 11:44:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48180 states, 48179 states have (on average 1.2937794474771165) internal successors, (62333), 48179 states have internal predecessors, (62333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48180 states to 48180 states and 62333 transitions. [2023-11-26 11:44:16,042 INFO L78 Accepts]: Start accepts. Automaton has 48180 states and 62333 transitions. Word has length 68 [2023-11-26 11:44:16,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:16,043 INFO L495 AbstractCegarLoop]: Abstraction has 48180 states and 62333 transitions. [2023-11-26 11:44:16,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:16,043 INFO L276 IsEmpty]: Start isEmpty. Operand 48180 states and 62333 transitions. [2023-11-26 11:44:16,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:44:16,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:16,052 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:16,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:44:16,053 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:16,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:16,053 INFO L85 PathProgramCache]: Analyzing trace with hash 225057860, now seen corresponding path program 1 times [2023-11-26 11:44:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:16,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169880715] [2023-11-26 11:44:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:16,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:16,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169880715] [2023-11-26 11:44:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169880715] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753368611] [2023-11-26 11:44:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:16,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:16,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:16,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:16,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:44:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:16,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:44:16,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:16,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:44:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:16,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753368611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:44:16,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:44:16,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-26 11:44:16,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277844273] [2023-11-26 11:44:16,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:44:16,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:44:16,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:16,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:44:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:44:16,705 INFO L87 Difference]: Start difference. First operand 48180 states and 62333 transitions. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:17,374 INFO L93 Difference]: Finished difference Result 108066 states and 139202 transitions. [2023-11-26 11:44:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:44:17,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-26 11:44:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:17,514 INFO L225 Difference]: With dead ends: 108066 [2023-11-26 11:44:17,514 INFO L226 Difference]: Without dead ends: 83870 [2023-11-26 11:44:17,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:44:17,551 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 1171 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:17,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 385 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:44:17,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83870 states. [2023-11-26 11:44:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83870 to 52982. [2023-11-26 11:44:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52982 states, 52981 states have (on average 1.294331930314641) internal successors, (68575), 52981 states have internal predecessors, (68575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52982 states to 52982 states and 68575 transitions. [2023-11-26 11:44:18,805 INFO L78 Accepts]: Start accepts. Automaton has 52982 states and 68575 transitions. Word has length 68 [2023-11-26 11:44:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:18,806 INFO L495 AbstractCegarLoop]: Abstraction has 52982 states and 68575 transitions. [2023-11-26 11:44:18,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 52982 states and 68575 transitions. [2023-11-26 11:44:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 11:44:18,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:18,813 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:18,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:19,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:19,020 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:19,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:19,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1517615394, now seen corresponding path program 1 times [2023-11-26 11:44:19,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:19,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121774544] [2023-11-26 11:44:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:19,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:19,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:19,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121774544] [2023-11-26 11:44:19,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121774544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:19,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401355037] [2023-11-26 11:44:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:19,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:19,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:19,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:19,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:44:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:19,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:44:19,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:19,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:44:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:19,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401355037] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:44:19,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:44:19,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-26 11:44:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779704912] [2023-11-26 11:44:19,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:44:19,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:44:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:19,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:44:19,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:44:19,608 INFO L87 Difference]: Start difference. First operand 52982 states and 68575 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:20,503 INFO L93 Difference]: Finished difference Result 113844 states and 146920 transitions. [2023-11-26 11:44:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:44:20,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 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 69 [2023-11-26 11:44:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:20,581 INFO L225 Difference]: With dead ends: 113844 [2023-11-26 11:44:20,581 INFO L226 Difference]: Without dead ends: 76165 [2023-11-26 11:44:20,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:44:20,604 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1064 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:20,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 279 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:44:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76165 states. [2023-11-26 11:44:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76165 to 53950. [2023-11-26 11:44:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53950 states, 53949 states have (on average 1.2844353000055608) internal successors, (69294), 53949 states have internal predecessors, (69294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53950 states to 53950 states and 69294 transitions. [2023-11-26 11:44:21,809 INFO L78 Accepts]: Start accepts. Automaton has 53950 states and 69294 transitions. Word has length 69 [2023-11-26 11:44:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:21,809 INFO L495 AbstractCegarLoop]: Abstraction has 53950 states and 69294 transitions. [2023-11-26 11:44:21,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 53950 states and 69294 transitions. [2023-11-26 11:44:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-26 11:44:21,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:21,816 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:21,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:22,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-26 11:44:22,021 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:22,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2004446986, now seen corresponding path program 1 times [2023-11-26 11:44:22,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:22,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580377612] [2023-11-26 11:44:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:22,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:22,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:22,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580377612] [2023-11-26 11:44:22,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580377612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:22,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533858307] [2023-11-26 11:44:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:22,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:22,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:22,365 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:22,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:44:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:22,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:44:22,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:23,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:44:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:23,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533858307] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:44:23,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:44:23,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-26 11:44:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428399179] [2023-11-26 11:44:23,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:44:23,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 11:44:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:23,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 11:44:23,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:44:23,620 INFO L87 Difference]: Start difference. First operand 53950 states and 69294 transitions. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:44:27,063 INFO L93 Difference]: Finished difference Result 275047 states and 350593 transitions. [2023-11-26 11:44:27,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-26 11:44:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 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 70 [2023-11-26 11:44:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:44:27,423 INFO L225 Difference]: With dead ends: 275047 [2023-11-26 11:44:27,423 INFO L226 Difference]: Without dead ends: 229620 [2023-11-26 11:44:27,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=782, Invalid=2298, Unknown=0, NotChecked=0, Total=3080 [2023-11-26 11:44:27,480 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1765 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:44:27,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 2088 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:44:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229620 states. [2023-11-26 11:44:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229620 to 112020. [2023-11-26 11:44:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112020 states, 112019 states have (on average 1.2830234156705558) internal successors, (143723), 112019 states have internal predecessors, (143723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112020 states to 112020 states and 143723 transitions. [2023-11-26 11:44:30,586 INFO L78 Accepts]: Start accepts. Automaton has 112020 states and 143723 transitions. Word has length 70 [2023-11-26 11:44:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:44:30,586 INFO L495 AbstractCegarLoop]: Abstraction has 112020 states and 143723 transitions. [2023-11-26 11:44:30,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 112020 states and 143723 transitions. [2023-11-26 11:44:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-26 11:44:30,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:30,597 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:44:30,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:44:30,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-26 11:44:30,799 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:30,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1916377881, now seen corresponding path program 1 times [2023-11-26 11:44:30,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:30,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994932592] [2023-11-26 11:44:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:31,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:31,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994932592] [2023-11-26 11:44:31,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994932592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081652087] [2023-11-26 11:44:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:31,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:31,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:31,128 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:31,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c5610b8-1ce9-49d9-a54c-c0584758072f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:44:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:31,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:44:31,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:31,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:31,712 INFO L327 TraceCheckSpWp]: Computing backward predicates...