./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX --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 3da1085986a33686aa7ffc74caa759bc9bd987d241f97554ff5ad69a436a7e40 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:51:15,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:51:15,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:51:15,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:51:15,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:51:15,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:51:15,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:51:15,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:51:15,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:51:15,665 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:51:15,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:51:15,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:51:15,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:51:15,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:51:15,670 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:51:15,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:51:15,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:51:15,671 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:51:15,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:51:15,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:51:15,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:51:15,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:51:15,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:51:15,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:51:15,674 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:51:15,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:51:15,675 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:51:15,675 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:51:15,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:51:15,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:51:15,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:51:15,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:51:15,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:51:15,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:51:15,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:51:15,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:51:15,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:51:15,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:51:15,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:51:15,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:51:15,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:51:15,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:51:15,680 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_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3da1085986a33686aa7ffc74caa759bc9bd987d241f97554ff5ad69a436a7e40 [2024-11-08 17:51:16,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:51:16,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:51:16,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:51:16,043 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:51:16,043 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:51:16,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-08 17:51:17,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:51:18,197 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:51:18,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-08 17:51:18,212 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/data/eced8e4f4/448403f076684b35a18b4d8e557d6d77/FLAGee3f0e760 [2024-11-08 17:51:18,230 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/data/eced8e4f4/448403f076684b35a18b4d8e557d6d77 [2024-11-08 17:51:18,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:51:18,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:51:18,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:51:18,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:51:18,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:51:18,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bca77a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18, skipping insertion in model container [2024-11-08 17:51:18,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,294 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:51:18,569 WARN L250 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_cb81aff6-44ba-4e91-921a-f043cc404e17/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2024-11-08 17:51:18,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:51:18,613 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:51:18,648 WARN L250 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_cb81aff6-44ba-4e91-921a-f043cc404e17/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2024-11-08 17:51:18,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:51:18,685 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:51:18,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18 WrapperNode [2024-11-08 17:51:18,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:51:18,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:51:18,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:51:18,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:51:18,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,741 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 367 [2024-11-08 17:51:18,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:51:18,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:51:18,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:51:18,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:51:18,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,775 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]. [2024-11-08 17:51:18,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,783 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,791 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:51:18,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:51:18,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:51:18,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:51:18,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (1/1) ... [2024-11-08 17:51:18,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:51:18,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:18,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:51:18,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:51:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:51:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:51:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:51:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:51:19,013 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:51:19,016 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:51:19,567 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-08 17:51:19,568 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:51:19,585 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:51:19,585 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:51:19,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:51:19 BoogieIcfgContainer [2024-11-08 17:51:19,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:51:19,591 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:51:19,591 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:51:19,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:51:19,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:51:18" (1/3) ... [2024-11-08 17:51:19,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73771f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:51:19, skipping insertion in model container [2024-11-08 17:51:19,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:51:18" (2/3) ... [2024-11-08 17:51:19,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73771f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:51:19, skipping insertion in model container [2024-11-08 17:51:19,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:51:19" (3/3) ... [2024-11-08 17:51:19,598 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-08 17:51:19,616 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:51:19,616 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:51:19,685 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:51:19,692 INFO L333 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, 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;@2434f02c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:51:19,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:51:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 17:51:19,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:19,706 INFO L215 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] [2024-11-08 17:51:19,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:19,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:19,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1258202004, now seen corresponding path program 1 times [2024-11-08 17:51:19,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:19,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142266249] [2024-11-08 17:51:19,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:19,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142266249] [2024-11-08 17:51:20,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142266249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:20,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:20,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:51:20,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131033400] [2024-11-08 17:51:20,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:20,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:51:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:20,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:51:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:51:20,226 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 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 12.333333333333334) 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) [2024-11-08 17:51:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:20,299 INFO L93 Difference]: Finished difference Result 199 states and 318 transitions. [2024-11-08 17:51:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:51:20,302 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 [2024-11-08 17:51:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:20,315 INFO L225 Difference]: With dead ends: 199 [2024-11-08 17:51:20,317 INFO L226 Difference]: Without dead ends: 128 [2024-11-08 17:51:20,321 INFO L431 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 [2024-11-08 17:51:20,326 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 101 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:20,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 300 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-08 17:51:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2024-11-08 17:51:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.504) internal successors, (188), 125 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 188 transitions. [2024-11-08 17:51:20,388 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 188 transitions. Word has length 37 [2024-11-08 17:51:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:20,388 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 188 transitions. [2024-11-08 17:51:20,389 INFO L472 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) [2024-11-08 17:51:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 188 transitions. [2024-11-08 17:51:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 17:51:20,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:20,390 INFO L215 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] [2024-11-08 17:51:20,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:51:20,391 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:20,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2004783502, now seen corresponding path program 1 times [2024-11-08 17:51:20,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:20,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145716610] [2024-11-08 17:51:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:20,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:20,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:20,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145716610] [2024-11-08 17:51:20,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145716610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:20,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:20,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:51:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144205148] [2024-11-08 17:51:20,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:20,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:51:20,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:51:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:51:20,629 INFO L87 Difference]: Start difference. First operand 126 states and 188 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2024-11-08 17:51:20,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:20,706 INFO L93 Difference]: Finished difference Result 306 states and 472 transitions. [2024-11-08 17:51:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:51:20,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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 [2024-11-08 17:51:20,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:20,720 INFO L225 Difference]: With dead ends: 306 [2024-11-08 17:51:20,720 INFO L226 Difference]: Without dead ends: 200 [2024-11-08 17:51:20,721 INFO L431 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 [2024-11-08 17:51:20,725 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 81 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:20,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 254 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-08 17:51:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2024-11-08 17:51:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 197 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 301 transitions. [2024-11-08 17:51:20,771 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 301 transitions. Word has length 38 [2024-11-08 17:51:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:20,772 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 301 transitions. [2024-11-08 17:51:20,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2024-11-08 17:51:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 301 transitions. [2024-11-08 17:51:20,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 17:51:20,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:20,774 INFO L215 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] [2024-11-08 17:51:20,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:51:20,774 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:20,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 337157617, now seen corresponding path program 1 times [2024-11-08 17:51:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:20,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364464552] [2024-11-08 17:51:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:20,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:20,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:20,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364464552] [2024-11-08 17:51:20,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364464552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:20,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:20,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:51:20,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687066390] [2024-11-08 17:51:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:20,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:51:20,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:20,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:51:20,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:51:20,943 INFO L87 Difference]: Start difference. First operand 198 states and 301 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) [2024-11-08 17:51:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:20,977 INFO L93 Difference]: Finished difference Result 490 states and 759 transitions. [2024-11-08 17:51:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:51:20,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 [2024-11-08 17:51:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:20,980 INFO L225 Difference]: With dead ends: 490 [2024-11-08 17:51:20,980 INFO L226 Difference]: Without dead ends: 312 [2024-11-08 17:51:20,981 INFO L431 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 [2024-11-08 17:51:20,982 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 76 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:20,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 239 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:20,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-08 17:51:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2024-11-08 17:51:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.5307443365695792) internal successors, (473), 309 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 473 transitions. [2024-11-08 17:51:21,005 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 473 transitions. Word has length 39 [2024-11-08 17:51:21,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:21,006 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 473 transitions. [2024-11-08 17:51:21,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) [2024-11-08 17:51:21,006 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 473 transitions. [2024-11-08 17:51:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 17:51:21,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:21,008 INFO L215 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] [2024-11-08 17:51:21,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:51:21,009 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:21,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:21,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1621587317, now seen corresponding path program 1 times [2024-11-08 17:51:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:21,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838448349] [2024-11-08 17:51:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:21,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:21,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:21,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838448349] [2024-11-08 17:51:21,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838448349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:21,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:21,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:51:21,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055964426] [2024-11-08 17:51:21,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:21,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:51:21,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:51:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:51:21,219 INFO L87 Difference]: Start difference. First operand 310 states and 473 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:21,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:21,343 INFO L93 Difference]: Finished difference Result 1470 states and 2285 transitions. [2024-11-08 17:51:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:51:21,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-08 17:51:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:21,349 INFO L225 Difference]: With dead ends: 1470 [2024-11-08 17:51:21,349 INFO L226 Difference]: Without dead ends: 1180 [2024-11-08 17:51:21,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:51:21,355 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 486 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:21,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 660 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:51:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2024-11-08 17:51:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 598. [2024-11-08 17:51:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.5226130653266332) internal successors, (909), 597 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 909 transitions. [2024-11-08 17:51:21,412 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 909 transitions. Word has length 40 [2024-11-08 17:51:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:21,413 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 909 transitions. [2024-11-08 17:51:21,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 909 transitions. [2024-11-08 17:51:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 17:51:21,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:21,414 INFO L215 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] [2024-11-08 17:51:21,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:51:21,415 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:21,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:21,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1289857042, now seen corresponding path program 1 times [2024-11-08 17:51:21,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:21,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084428691] [2024-11-08 17:51:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:21,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:21,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:21,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084428691] [2024-11-08 17:51:21,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084428691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:21,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:21,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:51:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977220886] [2024-11-08 17:51:21,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:21,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:51:21,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:21,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:51:21,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:51:21,633 INFO L87 Difference]: Start difference. First operand 598 states and 909 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) [2024-11-08 17:51:21,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:21,720 INFO L93 Difference]: Finished difference Result 2068 states and 3144 transitions. [2024-11-08 17:51:21,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:51:21,721 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 [2024-11-08 17:51:21,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:21,729 INFO L225 Difference]: With dead ends: 2068 [2024-11-08 17:51:21,729 INFO L226 Difference]: Without dead ends: 1490 [2024-11-08 17:51:21,730 INFO L431 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 [2024-11-08 17:51:21,733 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 323 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:21,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 330 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:51:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2024-11-08 17:51:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1486. [2024-11-08 17:51:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 1.5063973063973064) internal successors, (2237), 1485 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2237 transitions. [2024-11-08 17:51:21,796 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2237 transitions. Word has length 41 [2024-11-08 17:51:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:21,797 INFO L471 AbstractCegarLoop]: Abstraction has 1486 states and 2237 transitions. [2024-11-08 17:51:21,798 INFO L472 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) [2024-11-08 17:51:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2237 transitions. [2024-11-08 17:51:21,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 17:51:21,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:21,802 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:51:21,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:51:21,802 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:21,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash 97793413, now seen corresponding path program 1 times [2024-11-08 17:51:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:21,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689756131] [2024-11-08 17:51:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:21,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:21,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:21,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689756131] [2024-11-08 17:51:21,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689756131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:21,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:21,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:51:21,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152951121] [2024-11-08 17:51:21,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:21,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:51:21,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:21,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:51:21,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:51:21,979 INFO L87 Difference]: Start difference. First operand 1486 states and 2237 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:22,195 INFO L93 Difference]: Finished difference Result 4418 states and 6671 transitions. [2024-11-08 17:51:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:51:22,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-08 17:51:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:22,206 INFO L225 Difference]: With dead ends: 4418 [2024-11-08 17:51:22,206 INFO L226 Difference]: Without dead ends: 2952 [2024-11-08 17:51:22,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:51:22,209 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:22,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 139 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:51:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2024-11-08 17:51:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2950. [2024-11-08 17:51:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2949 states have (on average 1.4991522550016956) internal successors, (4421), 2949 states have internal predecessors, (4421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 4421 transitions. [2024-11-08 17:51:22,287 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 4421 transitions. Word has length 43 [2024-11-08 17:51:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:22,287 INFO L471 AbstractCegarLoop]: Abstraction has 2950 states and 4421 transitions. [2024-11-08 17:51:22,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 4421 transitions. [2024-11-08 17:51:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 17:51:22,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:22,289 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:51:22,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:51:22,289 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:22,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:22,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1723958080, now seen corresponding path program 1 times [2024-11-08 17:51:22,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:22,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874020697] [2024-11-08 17:51:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:22,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:22,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:22,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874020697] [2024-11-08 17:51:22,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874020697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:22,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:22,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:51:22,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918057237] [2024-11-08 17:51:22,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:22,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:51:22,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:22,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:51:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:51:22,694 INFO L87 Difference]: Start difference. First operand 2950 states and 4421 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:22,750 INFO L93 Difference]: Finished difference Result 3144 states and 4710 transitions. [2024-11-08 17:51:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:51:22,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-08 17:51:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:22,761 INFO L225 Difference]: With dead ends: 3144 [2024-11-08 17:51:22,761 INFO L226 Difference]: Without dead ends: 3142 [2024-11-08 17:51:22,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:51:22,765 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:22,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2024-11-08 17:51:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 3142. [2024-11-08 17:51:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.4686405603311048) internal successors, (4613), 3141 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4613 transitions. [2024-11-08 17:51:22,845 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4613 transitions. Word has length 43 [2024-11-08 17:51:22,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:22,846 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4613 transitions. [2024-11-08 17:51:22,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4613 transitions. [2024-11-08 17:51:22,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 17:51:22,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:22,850 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:51:22,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:51:22,850 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:22,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1913665939, now seen corresponding path program 1 times [2024-11-08 17:51:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284625835] [2024-11-08 17:51:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:22,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:22,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284625835] [2024-11-08 17:51:22,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284625835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:22,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:22,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:51:22,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460761523] [2024-11-08 17:51:22,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:22,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:51:22,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:22,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:51:22,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:51:22,956 INFO L87 Difference]: Start difference. First operand 3142 states and 4613 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:23,049 INFO L93 Difference]: Finished difference Result 7604 states and 11171 transitions. [2024-11-08 17:51:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:51:23,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-11-08 17:51:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:23,063 INFO L225 Difference]: With dead ends: 7604 [2024-11-08 17:51:23,063 INFO L226 Difference]: Without dead ends: 4482 [2024-11-08 17:51:23,067 INFO L431 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 [2024-11-08 17:51:23,070 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 66 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:23,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 236 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2024-11-08 17:51:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4480. [2024-11-08 17:51:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4479 states have (on average 1.4594775619557938) internal successors, (6537), 4479 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6537 transitions. [2024-11-08 17:51:23,175 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6537 transitions. Word has length 44 [2024-11-08 17:51:23,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:23,176 INFO L471 AbstractCegarLoop]: Abstraction has 4480 states and 6537 transitions. [2024-11-08 17:51:23,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6537 transitions. [2024-11-08 17:51:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 17:51:23,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:23,180 INFO L215 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] [2024-11-08 17:51:23,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:51:23,180 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:23,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:23,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1827424966, now seen corresponding path program 1 times [2024-11-08 17:51:23,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:23,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909947246] [2024-11-08 17:51:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:23,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:51:23,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909947246] [2024-11-08 17:51:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909947246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:51:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322053856] [2024-11-08 17:51:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:23,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:23,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:23,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:51:23,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:51:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:23,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:51:23,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:51:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:24,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:51:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:25,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322053856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:51:25,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:51:25,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-11-08 17:51:25,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96015086] [2024-11-08 17:51:25,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:51:25,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 17:51:25,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 17:51:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:51:25,347 INFO L87 Difference]: Start difference. First operand 4480 states and 6537 transitions. Second operand has 20 states, 20 states have (on average 8.5) internal successors, (170), 20 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:28,562 INFO L93 Difference]: Finished difference Result 25984 states and 37635 transitions. [2024-11-08 17:51:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-08 17:51:28,563 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.5) internal successors, (170), 20 states have internal predecessors, (170), 0 states have call successors, (0), 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 [2024-11-08 17:51:28,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:28,623 INFO L225 Difference]: With dead ends: 25984 [2024-11-08 17:51:28,624 INFO L226 Difference]: Without dead ends: 22010 [2024-11-08 17:51:28,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1910 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1239, Invalid=4923, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 17:51:28,634 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 2750 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2750 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:28,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2750 Valid, 1218 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 17:51:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22010 states. [2024-11-08 17:51:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22010 to 12320. [2024-11-08 17:51:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12320 states, 12319 states have (on average 1.4385096192872797) internal successors, (17721), 12319 states have internal predecessors, (17721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12320 states to 12320 states and 17721 transitions. [2024-11-08 17:51:28,998 INFO L78 Accepts]: Start accepts. Automaton has 12320 states and 17721 transitions. Word has length 61 [2024-11-08 17:51:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:28,999 INFO L471 AbstractCegarLoop]: Abstraction has 12320 states and 17721 transitions. [2024-11-08 17:51:28,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.5) internal successors, (170), 20 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 12320 states and 17721 transitions. [2024-11-08 17:51:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:51:29,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:29,002 INFO L215 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] [2024-11-08 17:51:29,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:51:29,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:29,203 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:29,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash 621000165, now seen corresponding path program 1 times [2024-11-08 17:51:29,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:29,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113857036] [2024-11-08 17:51:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:29,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:29,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:29,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113857036] [2024-11-08 17:51:29,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113857036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:29,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:29,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:51:29,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322983927] [2024-11-08 17:51:29,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:29,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:51:29,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:51:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:51:29,282 INFO L87 Difference]: Start difference. First operand 12320 states and 17721 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) [2024-11-08 17:51:29,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:29,351 INFO L93 Difference]: Finished difference Result 19232 states and 27527 transitions. [2024-11-08 17:51:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:51:29,351 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 [2024-11-08 17:51:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:29,379 INFO L225 Difference]: With dead ends: 19232 [2024-11-08 17:51:29,380 INFO L226 Difference]: Without dead ends: 12751 [2024-11-08 17:51:29,388 INFO L431 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 [2024-11-08 17:51:29,389 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 67 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:29,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 265 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12751 states. [2024-11-08 17:51:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12751 to 12409. [2024-11-08 17:51:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12409 states, 12408 states have (on average 1.4104609929078014) internal successors, (17501), 12408 states have internal predecessors, (17501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12409 states to 12409 states and 17501 transitions. [2024-11-08 17:51:29,762 INFO L78 Accepts]: Start accepts. Automaton has 12409 states and 17501 transitions. Word has length 62 [2024-11-08 17:51:29,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:29,763 INFO L471 AbstractCegarLoop]: Abstraction has 12409 states and 17501 transitions. [2024-11-08 17:51:29,763 INFO L472 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) [2024-11-08 17:51:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 12409 states and 17501 transitions. [2024-11-08 17:51:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:51:29,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:29,766 INFO L215 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] [2024-11-08 17:51:29,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:51:29,767 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:29,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2941002, now seen corresponding path program 1 times [2024-11-08 17:51:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404929458] [2024-11-08 17:51:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:29,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:29,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404929458] [2024-11-08 17:51:29,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404929458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:29,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:29,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:51:29,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006306814] [2024-11-08 17:51:29,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:29,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:51:29,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:29,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:51:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:51:29,844 INFO L87 Difference]: Start difference. First operand 12409 states and 17501 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) [2024-11-08 17:51:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:29,937 INFO L93 Difference]: Finished difference Result 29480 states and 41367 transitions. [2024-11-08 17:51:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:51:29,938 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 [2024-11-08 17:51:29,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:29,974 INFO L225 Difference]: With dead ends: 29480 [2024-11-08 17:51:29,975 INFO L226 Difference]: Without dead ends: 20145 [2024-11-08 17:51:29,987 INFO L431 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 [2024-11-08 17:51:29,988 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 63 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:29,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 222 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20145 states. [2024-11-08 17:51:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20145 to 20094. [2024-11-08 17:51:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20094 states, 20093 states have (on average 1.3845120191111333) internal successors, (27819), 20093 states have internal predecessors, (27819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20094 states to 20094 states and 27819 transitions. [2024-11-08 17:51:30,473 INFO L78 Accepts]: Start accepts. Automaton has 20094 states and 27819 transitions. Word has length 62 [2024-11-08 17:51:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:30,474 INFO L471 AbstractCegarLoop]: Abstraction has 20094 states and 27819 transitions. [2024-11-08 17:51:30,474 INFO L472 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) [2024-11-08 17:51:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 20094 states and 27819 transitions. [2024-11-08 17:51:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:51:30,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:30,478 INFO L215 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] [2024-11-08 17:51:30,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:51:30,478 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:30,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:30,479 INFO L85 PathProgramCache]: Analyzing trace with hash 954450183, now seen corresponding path program 1 times [2024-11-08 17:51:30,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:30,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057355760] [2024-11-08 17:51:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:30,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:30,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:30,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057355760] [2024-11-08 17:51:30,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057355760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:30,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:30,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:51:30,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723617605] [2024-11-08 17:51:30,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:30,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:51:30,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:30,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:51:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:51:30,555 INFO L87 Difference]: Start difference. First operand 20094 states and 27819 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) [2024-11-08 17:51:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:30,712 INFO L93 Difference]: Finished difference Result 40449 states and 55859 transitions. [2024-11-08 17:51:30,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:51:30,713 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 [2024-11-08 17:51:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:30,843 INFO L225 Difference]: With dead ends: 40449 [2024-11-08 17:51:30,844 INFO L226 Difference]: Without dead ends: 22776 [2024-11-08 17:51:30,861 INFO L431 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 [2024-11-08 17:51:30,861 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 64 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:30,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 266 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:30,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22776 states. [2024-11-08 17:51:31,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22776 to 18973. [2024-11-08 17:51:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18973 states, 18972 states have (on average 1.3664874551971327) internal successors, (25925), 18972 states have internal predecessors, (25925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18973 states to 18973 states and 25925 transitions. [2024-11-08 17:51:31,258 INFO L78 Accepts]: Start accepts. Automaton has 18973 states and 25925 transitions. Word has length 62 [2024-11-08 17:51:31,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:31,259 INFO L471 AbstractCegarLoop]: Abstraction has 18973 states and 25925 transitions. [2024-11-08 17:51:31,259 INFO L472 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) [2024-11-08 17:51:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 18973 states and 25925 transitions. [2024-11-08 17:51:31,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:51:31,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:31,265 INFO L215 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] [2024-11-08 17:51:31,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:51:31,266 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:31,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:31,266 INFO L85 PathProgramCache]: Analyzing trace with hash -922232594, now seen corresponding path program 1 times [2024-11-08 17:51:31,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:31,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636466048] [2024-11-08 17:51:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:31,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:51:31,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:31,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636466048] [2024-11-08 17:51:31,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636466048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:31,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:31,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:51:31,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301396134] [2024-11-08 17:51:31,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:31,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:51:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:51:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:51:31,418 INFO L87 Difference]: Start difference. First operand 18973 states and 25925 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:31,715 INFO L93 Difference]: Finished difference Result 35411 states and 48911 transitions. [2024-11-08 17:51:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:51:31,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 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 [2024-11-08 17:51:31,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:31,763 INFO L225 Difference]: With dead ends: 35411 [2024-11-08 17:51:31,763 INFO L226 Difference]: Without dead ends: 29996 [2024-11-08 17:51:31,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:51:31,844 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 341 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:31,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 538 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:51:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29996 states. [2024-11-08 17:51:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29996 to 24182. [2024-11-08 17:51:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24182 states, 24181 states have (on average 1.3661966006368635) internal successors, (33036), 24181 states have internal predecessors, (33036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24182 states to 24182 states and 33036 transitions. [2024-11-08 17:51:32,225 INFO L78 Accepts]: Start accepts. Automaton has 24182 states and 33036 transitions. Word has length 62 [2024-11-08 17:51:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:32,225 INFO L471 AbstractCegarLoop]: Abstraction has 24182 states and 33036 transitions. [2024-11-08 17:51:32,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 24182 states and 33036 transitions. [2024-11-08 17:51:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:51:32,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:32,230 INFO L215 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] [2024-11-08 17:51:32,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:51:32,231 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:32,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:32,231 INFO L85 PathProgramCache]: Analyzing trace with hash -237073659, now seen corresponding path program 1 times [2024-11-08 17:51:32,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:32,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97088984] [2024-11-08 17:51:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:32,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:51:32,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:32,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97088984] [2024-11-08 17:51:32,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97088984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:32,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:32,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:51:32,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974451061] [2024-11-08 17:51:32,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:32,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:51:32,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:32,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:51:32,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:51:32,349 INFO L87 Difference]: Start difference. First operand 24182 states and 33036 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:32,702 INFO L93 Difference]: Finished difference Result 39768 states and 54850 transitions. [2024-11-08 17:51:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:51:32,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2024-11-08 17:51:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:32,764 INFO L225 Difference]: With dead ends: 39768 [2024-11-08 17:51:32,764 INFO L226 Difference]: Without dead ends: 33516 [2024-11-08 17:51:32,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:51:32,780 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 334 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:32,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 590 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:51:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33516 states. [2024-11-08 17:51:33,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33516 to 29608. [2024-11-08 17:51:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29608 states, 29607 states have (on average 1.3639004289526127) internal successors, (40381), 29607 states have internal predecessors, (40381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:33,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29608 states to 29608 states and 40381 transitions. [2024-11-08 17:51:33,366 INFO L78 Accepts]: Start accepts. Automaton has 29608 states and 40381 transitions. Word has length 62 [2024-11-08 17:51:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:33,367 INFO L471 AbstractCegarLoop]: Abstraction has 29608 states and 40381 transitions. [2024-11-08 17:51:33,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 29608 states and 40381 transitions. [2024-11-08 17:51:33,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 17:51:33,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:33,373 INFO L215 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] [2024-11-08 17:51:33,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:51:33,374 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:33,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:33,374 INFO L85 PathProgramCache]: Analyzing trace with hash 901849755, now seen corresponding path program 1 times [2024-11-08 17:51:33,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:33,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168637212] [2024-11-08 17:51:33,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:33,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:51:33,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168637212] [2024-11-08 17:51:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168637212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:51:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17945578] [2024-11-08 17:51:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:33,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:51:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:51:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:51:33,590 INFO L87 Difference]: Start difference. First operand 29608 states and 40381 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) [2024-11-08 17:51:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:33,788 INFO L93 Difference]: Finished difference Result 57010 states and 77803 transitions. [2024-11-08 17:51:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:51:33,789 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 63 [2024-11-08 17:51:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:33,824 INFO L225 Difference]: With dead ends: 57010 [2024-11-08 17:51:33,824 INFO L226 Difference]: Without dead ends: 27459 [2024-11-08 17:51:33,848 INFO L431 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 [2024-11-08 17:51:33,848 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:33,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 126 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:51:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27459 states. [2024-11-08 17:51:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27459 to 26424. [2024-11-08 17:51:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26424 states, 26423 states have (on average 1.3475381296597662) internal successors, (35606), 26423 states have internal predecessors, (35606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:34,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 35606 transitions. [2024-11-08 17:51:34,396 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 35606 transitions. Word has length 63 [2024-11-08 17:51:34,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:34,396 INFO L471 AbstractCegarLoop]: Abstraction has 26424 states and 35606 transitions. [2024-11-08 17:51:34,396 INFO L472 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) [2024-11-08 17:51:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 35606 transitions. [2024-11-08 17:51:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 17:51:34,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:34,402 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:51:34,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:51:34,402 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:34,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:34,403 INFO L85 PathProgramCache]: Analyzing trace with hash -121604344, now seen corresponding path program 1 times [2024-11-08 17:51:34,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:34,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550082778] [2024-11-08 17:51:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:34,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:51:34,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:34,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550082778] [2024-11-08 17:51:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550082778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:34,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:51:34,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228093928] [2024-11-08 17:51:34,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:34,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:51:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:51:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:51:34,678 INFO L87 Difference]: Start difference. First operand 26424 states and 35606 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:34,836 INFO L93 Difference]: Finished difference Result 43644 states and 59363 transitions. [2024-11-08 17:51:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:51:34,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2024-11-08 17:51:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:34,878 INFO L225 Difference]: With dead ends: 43644 [2024-11-08 17:51:34,879 INFO L226 Difference]: Without dead ends: 36266 [2024-11-08 17:51:34,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:51:34,892 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 323 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:34,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 534 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:34,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36266 states. [2024-11-08 17:51:35,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36266 to 32000. [2024-11-08 17:51:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32000 states, 31999 states have (on average 1.345760805025157) internal successors, (43063), 31999 states have internal predecessors, (43063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32000 states to 32000 states and 43063 transitions. [2024-11-08 17:51:35,328 INFO L78 Accepts]: Start accepts. Automaton has 32000 states and 43063 transitions. Word has length 63 [2024-11-08 17:51:35,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:35,328 INFO L471 AbstractCegarLoop]: Abstraction has 32000 states and 43063 transitions. [2024-11-08 17:51:35,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand 32000 states and 43063 transitions. [2024-11-08 17:51:35,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:51:35,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:35,334 INFO L215 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] [2024-11-08 17:51:35,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 17:51:35,334 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:35,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:35,334 INFO L85 PathProgramCache]: Analyzing trace with hash 746654310, now seen corresponding path program 1 times [2024-11-08 17:51:35,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:35,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139524635] [2024-11-08 17:51:35,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:35,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:51:35,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:35,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139524635] [2024-11-08 17:51:35,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139524635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:35,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:35,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:51:35,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104991474] [2024-11-08 17:51:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:35,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:51:35,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:51:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:51:35,441 INFO L87 Difference]: Start difference. First operand 32000 states and 43063 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:35,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:35,891 INFO L93 Difference]: Finished difference Result 73686 states and 98989 transitions. [2024-11-08 17:51:35,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:51:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 67 [2024-11-08 17:51:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:35,934 INFO L225 Difference]: With dead ends: 73686 [2024-11-08 17:51:35,934 INFO L226 Difference]: Without dead ends: 41748 [2024-11-08 17:51:35,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:51:35,953 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 437 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:35,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 141 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:51:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41748 states. [2024-11-08 17:51:36,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41748 to 41290. [2024-11-08 17:51:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41290 states, 41289 states have (on average 1.3309598198067283) internal successors, (54954), 41289 states have internal predecessors, (54954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41290 states to 41290 states and 54954 transitions. [2024-11-08 17:51:36,630 INFO L78 Accepts]: Start accepts. Automaton has 41290 states and 54954 transitions. Word has length 67 [2024-11-08 17:51:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:36,631 INFO L471 AbstractCegarLoop]: Abstraction has 41290 states and 54954 transitions. [2024-11-08 17:51:36,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:36,631 INFO L276 IsEmpty]: Start isEmpty. Operand 41290 states and 54954 transitions. [2024-11-08 17:51:36,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:51:36,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:36,637 INFO L215 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] [2024-11-08 17:51:36,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:51:36,638 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:36,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:36,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1698199029, now seen corresponding path program 1 times [2024-11-08 17:51:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:36,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349775798] [2024-11-08 17:51:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:36,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:36,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349775798] [2024-11-08 17:51:36,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349775798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:51:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077729986] [2024-11-08 17:51:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:36,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:36,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:36,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:51:36,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:51:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:36,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:51:36,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:51:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:37,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:51:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:37,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077729986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:51:37,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:51:37,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 17:51:37,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927352842] [2024-11-08 17:51:37,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:51:37,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:51:37,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:37,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:51:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:51:37,397 INFO L87 Difference]: Start difference. First operand 41290 states and 54954 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:38,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:38,012 INFO L93 Difference]: Finished difference Result 95797 states and 127788 transitions. [2024-11-08 17:51:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:51:38,013 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-08 17:51:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:38,089 INFO L225 Difference]: With dead ends: 95797 [2024-11-08 17:51:38,089 INFO L226 Difference]: Without dead ends: 71523 [2024-11-08 17:51:38,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:51:38,119 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 836 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:38,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 349 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:51:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71523 states. [2024-11-08 17:51:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71523 to 49309. [2024-11-08 17:51:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49309 states, 49308 states have (on average 1.3309604932262513) internal successors, (65627), 49308 states have internal predecessors, (65627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49309 states to 49309 states and 65627 transitions. [2024-11-08 17:51:38,971 INFO L78 Accepts]: Start accepts. Automaton has 49309 states and 65627 transitions. Word has length 67 [2024-11-08 17:51:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:38,971 INFO L471 AbstractCegarLoop]: Abstraction has 49309 states and 65627 transitions. [2024-11-08 17:51:38,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 49309 states and 65627 transitions. [2024-11-08 17:51:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:51:38,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:38,977 INFO L215 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] [2024-11-08 17:51:38,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:51:39,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 17:51:39,182 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:39,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:39,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2073252700, now seen corresponding path program 1 times [2024-11-08 17:51:39,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:39,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646051923] [2024-11-08 17:51:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:39,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:39,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646051923] [2024-11-08 17:51:39,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646051923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:51:39,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413527273] [2024-11-08 17:51:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:39,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:39,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:39,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:51:39,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:51:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:39,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:51:39,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:51:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:40,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:51:40,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:40,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413527273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:51:40,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:51:40,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 17:51:40,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64782830] [2024-11-08 17:51:40,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:51:40,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:51:40,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:40,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:51:40,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:51:40,184 INFO L87 Difference]: Start difference. First operand 49309 states and 65627 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:40,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:40,643 INFO L93 Difference]: Finished difference Result 90142 states and 119455 transitions. [2024-11-08 17:51:40,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:51:40,643 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 67 [2024-11-08 17:51:40,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:40,704 INFO L225 Difference]: With dead ends: 90142 [2024-11-08 17:51:40,704 INFO L226 Difference]: Without dead ends: 65208 [2024-11-08 17:51:40,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:51:40,729 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 421 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:40,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 428 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:51:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65208 states. [2024-11-08 17:51:41,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65208 to 53463. [2024-11-08 17:51:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53463 states, 53462 states have (on average 1.3266806329729528) internal successors, (70927), 53462 states have internal predecessors, (70927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53463 states to 53463 states and 70927 transitions. [2024-11-08 17:51:41,445 INFO L78 Accepts]: Start accepts. Automaton has 53463 states and 70927 transitions. Word has length 67 [2024-11-08 17:51:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:41,446 INFO L471 AbstractCegarLoop]: Abstraction has 53463 states and 70927 transitions. [2024-11-08 17:51:41,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:41,446 INFO L276 IsEmpty]: Start isEmpty. Operand 53463 states and 70927 transitions. [2024-11-08 17:51:41,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:51:41,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:41,449 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:51:41,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:51:41,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:41,650 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:41,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1010003109, now seen corresponding path program 1 times [2024-11-08 17:51:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:41,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130071795] [2024-11-08 17:51:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:41,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:41,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130071795] [2024-11-08 17:51:41,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130071795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:51:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037445060] [2024-11-08 17:51:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:41,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:41,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:41,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:51:41,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:51:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:41,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:51:41,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:51:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:42,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:51:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:42,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037445060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:51:42,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:51:42,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 17:51:42,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48951005] [2024-11-08 17:51:42,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:51:42,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:51:42,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:42,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:51:42,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:51:42,250 INFO L87 Difference]: Start difference. First operand 53463 states and 70927 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:43,095 INFO L93 Difference]: Finished difference Result 102816 states and 135980 transitions. [2024-11-08 17:51:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:51:43,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 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 [2024-11-08 17:51:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:43,181 INFO L225 Difference]: With dead ends: 102816 [2024-11-08 17:51:43,181 INFO L226 Difference]: Without dead ends: 62867 [2024-11-08 17:51:43,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:51:43,199 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 651 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:43,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 276 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:51:43,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62867 states. [2024-11-08 17:51:43,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62867 to 53856. [2024-11-08 17:51:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53856 states, 53855 states have (on average 1.3217528548881254) internal successors, (71183), 53855 states have internal predecessors, (71183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53856 states to 53856 states and 71183 transitions. [2024-11-08 17:51:43,950 INFO L78 Accepts]: Start accepts. Automaton has 53856 states and 71183 transitions. Word has length 68 [2024-11-08 17:51:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:43,950 INFO L471 AbstractCegarLoop]: Abstraction has 53856 states and 71183 transitions. [2024-11-08 17:51:43,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 53856 states and 71183 transitions. [2024-11-08 17:51:43,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 17:51:43,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:43,956 INFO L215 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] [2024-11-08 17:51:43,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:51:44,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:44,157 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:44,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1497418122, now seen corresponding path program 1 times [2024-11-08 17:51:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:44,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771249734] [2024-11-08 17:51:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:44,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:45,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:45,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771249734] [2024-11-08 17:51:45,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771249734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:51:45,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987289891] [2024-11-08 17:51:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:45,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:45,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:45,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:51:45,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:51:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:45,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:51:45,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:51:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:45,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:51:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:46,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987289891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:51:46,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:51:46,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-08 17:51:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549926672] [2024-11-08 17:51:46,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:51:46,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:51:46,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:51:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:51:46,198 INFO L87 Difference]: Start difference. First operand 53856 states and 71183 transitions. Second operand has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:47,788 INFO L93 Difference]: Finished difference Result 230774 states and 304555 transitions. [2024-11-08 17:51:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 17:51:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 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 [2024-11-08 17:51:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:48,379 INFO L225 Difference]: With dead ends: 230774 [2024-11-08 17:51:48,379 INFO L226 Difference]: Without dead ends: 176805 [2024-11-08 17:51:48,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1294, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 17:51:48,417 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 1228 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:48,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1002 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:51:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176805 states. [2024-11-08 17:51:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176805 to 105934. [2024-11-08 17:51:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105934 states, 105933 states have (on average 1.3084119207423561) internal successors, (138604), 105933 states have internal predecessors, (138604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105934 states to 105934 states and 138604 transitions. [2024-11-08 17:51:49,942 INFO L78 Accepts]: Start accepts. Automaton has 105934 states and 138604 transitions. Word has length 69 [2024-11-08 17:51:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:49,942 INFO L471 AbstractCegarLoop]: Abstraction has 105934 states and 138604 transitions. [2024-11-08 17:51:49,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 105934 states and 138604 transitions. [2024-11-08 17:51:49,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 17:51:49,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:49,948 INFO L215 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] [2024-11-08 17:51:49,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:51:50,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 17:51:50,149 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:50,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:50,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1871560551, now seen corresponding path program 1 times [2024-11-08 17:51:50,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:50,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587383313] [2024-11-08 17:51:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:50,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:51,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:51,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587383313] [2024-11-08 17:51:51,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587383313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:51:51,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794510948] [2024-11-08 17:51:51,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:51,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:51,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:51,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:51:51,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:51:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:51,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:51:51,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:51:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:51,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:51:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:52,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794510948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:51:52,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:51:52,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-08 17:51:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674468990] [2024-11-08 17:51:52,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:51:52,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:51:52,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:52,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:51:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:51:52,547 INFO L87 Difference]: Start difference. First operand 105934 states and 138604 transitions. Second operand has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 20 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:54,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:54,071 INFO L93 Difference]: Finished difference Result 238028 states and 310649 transitions. [2024-11-08 17:51:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 17:51:54,072 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 20 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-08 17:51:54,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:54,783 INFO L225 Difference]: With dead ends: 238028 [2024-11-08 17:51:54,783 INFO L226 Difference]: Without dead ends: 199694 [2024-11-08 17:51:54,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 17:51:54,808 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 627 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:54,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 951 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:51:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199694 states. [2024-11-08 17:51:56,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199694 to 169469. [2024-11-08 17:51:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169469 states, 169468 states have (on average 1.3076273986829372) internal successors, (221601), 169468 states have internal predecessors, (221601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169469 states to 169469 states and 221601 transitions. [2024-11-08 17:51:57,365 INFO L78 Accepts]: Start accepts. Automaton has 169469 states and 221601 transitions. Word has length 69 [2024-11-08 17:51:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:51:57,365 INFO L471 AbstractCegarLoop]: Abstraction has 169469 states and 221601 transitions. [2024-11-08 17:51:57,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 20 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:51:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 169469 states and 221601 transitions. [2024-11-08 17:51:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:51:57,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:51:57,375 INFO L215 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] [2024-11-08 17:51:57,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:51:57,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb81aff6-44ba-4e91-921a-f043cc404e17/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 17:51:57,575 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:51:57,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1988307597, now seen corresponding path program 1 times [2024-11-08 17:51:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:57,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72421770] [2024-11-08 17:51:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:51:57,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:57,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72421770] [2024-11-08 17:51:57,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72421770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:51:57,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:51:57,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:51:57,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109866993] [2024-11-08 17:51:57,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:51:57,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:51:57,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:51:57,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:51:57,636 INFO L87 Difference]: Start difference. First operand 169469 states and 221601 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) [2024-11-08 17:51:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:51:58,342 INFO L93 Difference]: Finished difference Result 327334 states and 428600 transitions. [2024-11-08 17:51:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:51:58,343 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 70 [2024-11-08 17:51:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:51:58,537 INFO L225 Difference]: With dead ends: 327334 [2024-11-08 17:51:58,537 INFO L226 Difference]: Without dead ends: 157966 [2024-11-08 17:51:58,607 INFO L431 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 [2024-11-08 17:51:58,608 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 69 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:51:58,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 97 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:51:59,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157966 states. [2024-11-08 17:52:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157966 to 157506. [2024-11-08 17:52:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157506 states, 157505 states have (on average 1.2972286594076379) internal successors, (204320), 157505 states have internal predecessors, (204320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157506 states to 157506 states and 204320 transitions. [2024-11-08 17:52:01,610 INFO L78 Accepts]: Start accepts. Automaton has 157506 states and 204320 transitions. Word has length 70 [2024-11-08 17:52:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:01,610 INFO L471 AbstractCegarLoop]: Abstraction has 157506 states and 204320 transitions. [2024-11-08 17:52:01,610 INFO L472 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) [2024-11-08 17:52:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 157506 states and 204320 transitions. [2024-11-08 17:52:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:52:01,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:01,615 INFO L215 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, 1, 1] [2024-11-08 17:52:01,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 17:52:01,615 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:01,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash -65493609, now seen corresponding path program 1 times [2024-11-08 17:52:01,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:01,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593056426] [2024-11-08 17:52:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:01,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:01,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593056426] [2024-11-08 17:52:01,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593056426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:01,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:01,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:52:01,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617692684] [2024-11-08 17:52:01,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:01,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:52:01,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:01,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:52:01,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:52:01,692 INFO L87 Difference]: Start difference. First operand 157506 states and 204320 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:03,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:03,082 INFO L93 Difference]: Finished difference Result 211828 states and 274237 transitions. [2024-11-08 17:52:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:52:03,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2024-11-08 17:52:03,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:03,255 INFO L225 Difference]: With dead ends: 211828 [2024-11-08 17:52:03,255 INFO L226 Difference]: Without dead ends: 142737 [2024-11-08 17:52:03,292 INFO L431 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 [2024-11-08 17:52:03,293 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 54 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 264 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 [2024-11-08 17:52:03,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 264 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:52:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142737 states. [2024-11-08 17:52:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142737 to 142719. [2024-11-08 17:52:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142719 states, 142718 states have (on average 1.2773931809582533) internal successors, (182307), 142718 states have internal predecessors, (182307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142719 states to 142719 states and 182307 transitions. [2024-11-08 17:52:05,023 INFO L78 Accepts]: Start accepts. Automaton has 142719 states and 182307 transitions. Word has length 70 [2024-11-08 17:52:05,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:05,024 INFO L471 AbstractCegarLoop]: Abstraction has 142719 states and 182307 transitions. [2024-11-08 17:52:05,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:05,024 INFO L276 IsEmpty]: Start isEmpty. Operand 142719 states and 182307 transitions. [2024-11-08 17:52:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:52:05,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:05,028 INFO L215 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, 1, 1] [2024-11-08 17:52:05,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 17:52:05,029 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:05,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash -303813183, now seen corresponding path program 1 times [2024-11-08 17:52:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:05,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177729474] [2024-11-08 17:52:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:05,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:05,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177729474] [2024-11-08 17:52:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177729474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:05,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:05,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:52:05,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126839797] [2024-11-08 17:52:05,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:05,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:52:05,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:52:05,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:52:05,094 INFO L87 Difference]: Start difference. First operand 142719 states and 182307 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:06,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:06,271 INFO L93 Difference]: Finished difference Result 174209 states and 222077 transitions. [2024-11-08 17:52:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:52:06,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2024-11-08 17:52:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:06,433 INFO L225 Difference]: With dead ends: 174209 [2024-11-08 17:52:06,433 INFO L226 Difference]: Without dead ends: 121563 [2024-11-08 17:52:06,475 INFO L431 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 [2024-11-08 17:52:06,476 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 242 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 [2024-11-08 17:52:06,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 242 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:52:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121563 states. [2024-11-08 17:52:08,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121563 to 121561. [2024-11-08 17:52:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121561 states, 121560 states have (on average 1.258390918065153) internal successors, (152970), 121560 states have internal predecessors, (152970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121561 states to 121561 states and 152970 transitions. [2024-11-08 17:52:08,316 INFO L78 Accepts]: Start accepts. Automaton has 121561 states and 152970 transitions. Word has length 70 [2024-11-08 17:52:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:08,316 INFO L471 AbstractCegarLoop]: Abstraction has 121561 states and 152970 transitions. [2024-11-08 17:52:08,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 121561 states and 152970 transitions. [2024-11-08 17:52:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:52:08,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:08,321 INFO L215 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] [2024-11-08 17:52:08,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 17:52:08,321 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:08,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:08,322 INFO L85 PathProgramCache]: Analyzing trace with hash 30251444, now seen corresponding path program 1 times [2024-11-08 17:52:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:08,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339678943] [2024-11-08 17:52:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:08,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:52:08,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:08,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339678943] [2024-11-08 17:52:08,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339678943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:08,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:08,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:52:08,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232110262] [2024-11-08 17:52:08,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:08,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:52:08,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:08,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:52:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:52:08,370 INFO L87 Difference]: Start difference. First operand 121561 states and 152970 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:52:09,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:09,000 INFO L93 Difference]: Finished difference Result 228207 states and 287768 transitions. [2024-11-08 17:52:09,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:52:09,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 [2024-11-08 17:52:09,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:09,866 INFO L225 Difference]: With dead ends: 228207 [2024-11-08 17:52:09,873 INFO L226 Difference]: Without dead ends: 106709 [2024-11-08 17:52:09,953 INFO L431 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 [2024-11-08 17:52:09,954 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 81 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:09,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 128 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:52:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106709 states.