./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.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_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/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_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/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_d3df578c-6030-40c5-92a9-e49c21652e62/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 38d85b6b5a04cb96dc69842531ed31487f7945c34d1c701c72adfae91c235e8c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:55:37,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:55:37,621 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:55:37,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:55:37,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:55:37,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:55:37,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:55:37,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:55:37,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:55:37,670 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:55:37,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:55:37,671 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:55:37,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:55:37,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:55:37,675 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:55:37,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:55:37,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:55:37,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:55:37,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:55:37,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:55:37,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:55:37,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:55:37,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:55:37,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:55:37,681 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:55:37,681 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:55:37,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:55:37,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:55:37,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:55:37,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:55:37,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:55:37,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:55:37,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:55:37,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:55:37,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:55:37,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:55:37,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:55:37,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:55:37,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:55:37,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:55:37,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:55:37,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:55:37,691 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_d3df578c-6030-40c5-92a9-e49c21652e62/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38d85b6b5a04cb96dc69842531ed31487f7945c34d1c701c72adfae91c235e8c [2024-11-08 18:55:37,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:55:37,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:55:37,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:55:37,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:55:37,975 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:55:37,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c Unable to find full path for "g++" [2024-11-08 18:55:40,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:55:40,541 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:55:40,543 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-11-08 18:55:40,586 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/data/d8915555e/b73f37eb4c1e4728925111e0204c9d9f/FLAGe95f1605b [2024-11-08 18:55:40,607 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/data/d8915555e/b73f37eb4c1e4728925111e0204c9d9f [2024-11-08 18:55:40,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:55:40,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:55:40,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:55:40,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:55:40,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:55:40,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:55:40" (1/1) ... [2024-11-08 18:55:40,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c6ad43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:40, skipping insertion in model container [2024-11-08 18:55:40,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:55:40" (1/1) ... [2024-11-08 18:55:40,778 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:55:41,202 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_d3df578c-6030-40c5-92a9-e49c21652e62/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[8749,8762] [2024-11-08 18:55:41,286 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_d3df578c-6030-40c5-92a9-e49c21652e62/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15685,15698] [2024-11-08 18:55:42,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:55:42,318 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:55:42,372 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_d3df578c-6030-40c5-92a9-e49c21652e62/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[8749,8762] [2024-11-08 18:55:42,406 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_d3df578c-6030-40c5-92a9-e49c21652e62/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15685,15698] [2024-11-08 18:55:42,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:55:43,028 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:55:43,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43 WrapperNode [2024-11-08 18:55:43,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:55:43,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:55:43,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:55:43,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:55:43,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,492 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5038 [2024-11-08 18:55:43,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:55:43,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:55:43,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:55:43,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:55:43,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,560 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,762 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 18:55:43,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:43,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:44,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:55:44,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:55:44,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:55:44,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:55:44,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (1/1) ... [2024-11-08 18:55:44,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:55:44,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:44,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:55:44,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:55:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:55:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:55:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:55:44,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:55:44,482 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:55:44,485 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:55:50,272 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-08 18:55:50,272 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:55:50,308 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:55:50,309 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 18:55:50,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:55:50 BoogieIcfgContainer [2024-11-08 18:55:50,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:55:50,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:55:50,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:55:50,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:55:50,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:55:40" (1/3) ... [2024-11-08 18:55:50,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20187656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:55:50, skipping insertion in model container [2024-11-08 18:55:50,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:55:43" (2/3) ... [2024-11-08 18:55:50,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20187656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:55:50, skipping insertion in model container [2024-11-08 18:55:50,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:55:50" (3/3) ... [2024-11-08 18:55:50,323 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-11-08 18:55:50,342 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:55:50,342 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 18:55:50,457 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:55:50,466 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;@6f3aa922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:55:50,466 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:55:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 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 18:55:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 18:55:50,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:50,489 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] [2024-11-08 18:55:50,490 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:50,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1890096235, now seen corresponding path program 1 times [2024-11-08 18:55:50,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:50,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556461890] [2024-11-08 18:55:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:50,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:50,820 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 18:55:50,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:50,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556461890] [2024-11-08 18:55:50,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556461890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:50,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:50,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:55:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734976122] [2024-11-08 18:55:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:50,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:55:50,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:50,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:55:50,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:55:50,868 INFO L87 Difference]: Start difference. First operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 18:55:50,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:50,980 INFO L93 Difference]: Finished difference Result 1743 states and 3312 transitions. [2024-11-08 18:55:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:55:50,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-08 18:55:50,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:51,000 INFO L225 Difference]: With dead ends: 1743 [2024-11-08 18:55:51,000 INFO L226 Difference]: Without dead ends: 821 [2024-11-08 18:55:51,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:55:51,016 INFO L432 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:51,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:55:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-08 18:55:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-11-08 18:55:51,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8937728937728937) internal successors, (1551), 820 states have internal predecessors, (1551), 0 states have call successors, (0), 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 18:55:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1551 transitions. [2024-11-08 18:55:51,106 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1551 transitions. Word has length 22 [2024-11-08 18:55:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:51,107 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1551 transitions. [2024-11-08 18:55:51,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 18:55:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1551 transitions. [2024-11-08 18:55:51,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 18:55:51,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:51,109 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] [2024-11-08 18:55:51,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:55:51,109 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:51,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1383802707, now seen corresponding path program 1 times [2024-11-08 18:55:51,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:51,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148384227] [2024-11-08 18:55:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:51,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:51,408 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 18:55:51,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148384227] [2024-11-08 18:55:51,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148384227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:51,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:51,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:55:51,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658329821] [2024-11-08 18:55:51,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:51,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:55:51,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:55:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:55:51,416 INFO L87 Difference]: Start difference. First operand 821 states and 1551 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 18:55:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:51,537 INFO L93 Difference]: Finished difference Result 863 states and 1615 transitions. [2024-11-08 18:55:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:55:51,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-08 18:55:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:51,542 INFO L225 Difference]: With dead ends: 863 [2024-11-08 18:55:51,542 INFO L226 Difference]: Without dead ends: 821 [2024-11-08 18:55:51,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 18:55:51,545 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 0 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6168 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:51,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6168 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:55:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-08 18:55:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-11-08 18:55:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8656898656898657) internal successors, (1528), 820 states have internal predecessors, (1528), 0 states have call successors, (0), 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 18:55:51,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1528 transitions. [2024-11-08 18:55:51,577 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1528 transitions. Word has length 22 [2024-11-08 18:55:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:51,577 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1528 transitions. [2024-11-08 18:55:51,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 18:55:51,578 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1528 transitions. [2024-11-08 18:55:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 18:55:51,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:51,579 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 18:55:51,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:55:51,580 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:51,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1814202574, now seen corresponding path program 1 times [2024-11-08 18:55:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805049499] [2024-11-08 18:55:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:51,757 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 18:55:51,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805049499] [2024-11-08 18:55:51,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805049499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:51,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:55:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317559786] [2024-11-08 18:55:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:51,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:55:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:55:51,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:55:51,765 INFO L87 Difference]: Start difference. First operand 821 states and 1528 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 18:55:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:52,006 INFO L93 Difference]: Finished difference Result 1125 states and 2008 transitions. [2024-11-08 18:55:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:55:52,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 18:55:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:52,012 INFO L225 Difference]: With dead ends: 1125 [2024-11-08 18:55:52,012 INFO L226 Difference]: Without dead ends: 1087 [2024-11-08 18:55:52,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:55:52,014 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 6332 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6332 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:52,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6332 Valid, 2095 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:55:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-08 18:55:52,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 857. [2024-11-08 18:55:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 855 states have (on average 1.8538011695906433) internal successors, (1585), 856 states have internal predecessors, (1585), 0 states have call successors, (0), 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 18:55:52,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1585 transitions. [2024-11-08 18:55:52,044 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1585 transitions. Word has length 44 [2024-11-08 18:55:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:52,044 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1585 transitions. [2024-11-08 18:55:52,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 18:55:52,045 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1585 transitions. [2024-11-08 18:55:52,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 18:55:52,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:52,047 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, 1, 1] [2024-11-08 18:55:52,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:55:52,047 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:52,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1723747522, now seen corresponding path program 1 times [2024-11-08 18:55:52,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:52,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994547939] [2024-11-08 18:55:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:52,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:52,196 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 18:55:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994547939] [2024-11-08 18:55:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994547939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:52,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:52,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:55:52,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535616442] [2024-11-08 18:55:52,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:52,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:55:52,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:52,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:55:52,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:55:52,200 INFO L87 Difference]: Start difference. First operand 857 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 18:55:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:52,259 INFO L93 Difference]: Finished difference Result 994 states and 1800 transitions. [2024-11-08 18:55:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:55:52,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-08 18:55:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:52,265 INFO L225 Difference]: With dead ends: 994 [2024-11-08 18:55:52,266 INFO L226 Difference]: Without dead ends: 920 [2024-11-08 18:55:52,267 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 18:55:52,270 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 1476 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:52,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1577 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:55:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-08 18:55:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 916. [2024-11-08 18:55:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8326039387308535) internal successors, (1675), 915 states have internal predecessors, (1675), 0 states have call successors, (0), 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 18:55:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1675 transitions. [2024-11-08 18:55:52,302 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1675 transitions. Word has length 46 [2024-11-08 18:55:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:52,302 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1675 transitions. [2024-11-08 18:55:52,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 18:55:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1675 transitions. [2024-11-08 18:55:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 18:55:52,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:52,310 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, 1, 1] [2024-11-08 18:55:52,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:55:52,311 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:52,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1657254010, now seen corresponding path program 1 times [2024-11-08 18:55:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:52,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517699783] [2024-11-08 18:55:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:52,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:52,646 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 18:55:52,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:52,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517699783] [2024-11-08 18:55:52,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517699783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:52,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:52,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:55:52,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402209265] [2024-11-08 18:55:52,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:52,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:55:52,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:55:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:55:52,649 INFO L87 Difference]: Start difference. First operand 916 states and 1675 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 18:55:52,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:52,867 INFO L93 Difference]: Finished difference Result 1051 states and 1883 transitions. [2024-11-08 18:55:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:55:52,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-08 18:55:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:52,874 INFO L225 Difference]: With dead ends: 1051 [2024-11-08 18:55:52,874 INFO L226 Difference]: Without dead ends: 918 [2024-11-08 18:55:52,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:55:52,877 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 1493 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:52,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1748 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:55:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-11-08 18:55:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 916. [2024-11-08 18:55:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8304157549234135) internal successors, (1673), 915 states have internal predecessors, (1673), 0 states have call successors, (0), 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 18:55:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1673 transitions. [2024-11-08 18:55:52,954 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1673 transitions. Word has length 46 [2024-11-08 18:55:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:52,954 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1673 transitions. [2024-11-08 18:55:52,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 18:55:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1673 transitions. [2024-11-08 18:55:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 18:55:52,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:52,956 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, 1, 1, 1] [2024-11-08 18:55:52,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:55:52,960 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:52,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:52,960 INFO L85 PathProgramCache]: Analyzing trace with hash -249989905, now seen corresponding path program 1 times [2024-11-08 18:55:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:52,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111616160] [2024-11-08 18:55:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:52,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:53,264 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 18:55:53,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:53,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111616160] [2024-11-08 18:55:53,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111616160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:53,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:53,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:55:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158074650] [2024-11-08 18:55:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:53,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:55:53,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:53,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:55:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:55:53,268 INFO L87 Difference]: Start difference. First operand 916 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 18:55:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:53,324 INFO L93 Difference]: Finished difference Result 924 states and 1682 transitions. [2024-11-08 18:55:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:55:53,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-08 18:55:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:53,332 INFO L225 Difference]: With dead ends: 924 [2024-11-08 18:55:53,332 INFO L226 Difference]: Without dead ends: 922 [2024-11-08 18:55:53,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 18:55:53,335 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6091 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:53,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6091 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:55:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-08 18:55:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2024-11-08 18:55:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.8239130434782609) internal successors, (1678), 921 states have internal predecessors, (1678), 0 states have call successors, (0), 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 18:55:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1678 transitions. [2024-11-08 18:55:53,365 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1678 transitions. Word has length 47 [2024-11-08 18:55:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:53,366 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1678 transitions. [2024-11-08 18:55:53,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 18:55:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1678 transitions. [2024-11-08 18:55:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 18:55:53,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:53,367 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, 1, 1, 1, 1] [2024-11-08 18:55:53,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:55:53,368 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:53,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:53,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1579154810, now seen corresponding path program 1 times [2024-11-08 18:55:53,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:53,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637866236] [2024-11-08 18:55:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:53,457 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 18:55:53,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:53,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637866236] [2024-11-08 18:55:53,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637866236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:53,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:53,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:55:53,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728819595] [2024-11-08 18:55:53,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:53,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:55:53,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:53,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:55:53,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:55:53,461 INFO L87 Difference]: Start difference. First operand 922 states and 1678 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:55:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:53,496 INFO L93 Difference]: Finished difference Result 1184 states and 2070 transitions. [2024-11-08 18:55:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:55:53,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-08 18:55:53,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:53,502 INFO L225 Difference]: With dead ends: 1184 [2024-11-08 18:55:53,502 INFO L226 Difference]: Without dead ends: 1045 [2024-11-08 18:55:53,503 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 18:55:53,504 INFO L432 NwaCegarLoop]: 1565 mSDtfsCounter, 1487 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:53,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1630 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:55:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-11-08 18:55:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1043. [2024-11-08 18:55:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1041 states have (on average 1.781940441882805) internal successors, (1855), 1042 states have internal predecessors, (1855), 0 states have call successors, (0), 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 18:55:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1855 transitions. [2024-11-08 18:55:53,534 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1855 transitions. Word has length 48 [2024-11-08 18:55:53,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:53,535 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1855 transitions. [2024-11-08 18:55:53,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:55:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1855 transitions. [2024-11-08 18:55:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 18:55:53,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:53,536 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, 1, 1, 1, 1] [2024-11-08 18:55:53,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:55:53,537 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:53,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2013690746, now seen corresponding path program 1 times [2024-11-08 18:55:53,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:53,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035468259] [2024-11-08 18:55:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:53,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:53,609 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 18:55:53,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:53,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035468259] [2024-11-08 18:55:53,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035468259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:53,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:53,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:55:53,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150965829] [2024-11-08 18:55:53,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:53,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:55:53,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:53,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:55:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:55:53,612 INFO L87 Difference]: Start difference. First operand 1043 states and 1855 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:55:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:53,652 INFO L93 Difference]: Finished difference Result 1531 states and 2573 transitions. [2024-11-08 18:55:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:55:53,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-08 18:55:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:53,658 INFO L225 Difference]: With dead ends: 1531 [2024-11-08 18:55:53,659 INFO L226 Difference]: Without dead ends: 1271 [2024-11-08 18:55:53,660 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 18:55:53,660 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 1483 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:53,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1626 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:55:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-08 18:55:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2024-11-08 18:55:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1267 states have (on average 1.718232044198895) internal successors, (2177), 1268 states have internal predecessors, (2177), 0 states have call successors, (0), 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 18:55:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2177 transitions. [2024-11-08 18:55:53,702 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2177 transitions. Word has length 48 [2024-11-08 18:55:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:53,702 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 2177 transitions. [2024-11-08 18:55:53,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:55:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2177 transitions. [2024-11-08 18:55:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 18:55:53,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:53,704 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, 1, 1, 1, 1] [2024-11-08 18:55:53,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:55:53,704 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:53,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:53,705 INFO L85 PathProgramCache]: Analyzing trace with hash 500343686, now seen corresponding path program 1 times [2024-11-08 18:55:53,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:53,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544482233] [2024-11-08 18:55:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:53,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:53,805 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 18:55:53,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:53,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544482233] [2024-11-08 18:55:53,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544482233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:53,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:53,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:55:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932481196] [2024-11-08 18:55:53,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:53,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:55:53,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:55:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:55:53,807 INFO L87 Difference]: Start difference. First operand 1269 states and 2177 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:55:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:53,854 INFO L93 Difference]: Finished difference Result 2177 states and 3483 transitions. [2024-11-08 18:55:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:55:53,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-08 18:55:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:53,862 INFO L225 Difference]: With dead ends: 2177 [2024-11-08 18:55:53,862 INFO L226 Difference]: Without dead ends: 1691 [2024-11-08 18:55:53,864 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 18:55:53,865 INFO L432 NwaCegarLoop]: 1563 mSDtfsCounter, 1485 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:53,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1632 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:55:53,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2024-11-08 18:55:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2024-11-08 18:55:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.6342620035566093) internal successors, (2757), 1688 states have internal predecessors, (2757), 0 states have call successors, (0), 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 18:55:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2757 transitions. [2024-11-08 18:55:53,915 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2757 transitions. Word has length 48 [2024-11-08 18:55:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:53,916 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2757 transitions. [2024-11-08 18:55:53,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:55:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2757 transitions. [2024-11-08 18:55:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 18:55:53,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:53,917 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, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:53,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:55:53,918 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:53,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1957276961, now seen corresponding path program 1 times [2024-11-08 18:55:53,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:53,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661531904] [2024-11-08 18:55:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:53,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:53,994 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 18:55:53,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:53,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661531904] [2024-11-08 18:55:53,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661531904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:53,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:53,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:55:53,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440884462] [2024-11-08 18:55:53,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:53,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:55:53,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:53,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:55:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:55:53,996 INFO L87 Difference]: Start difference. First operand 1689 states and 2757 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 18:55:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:55:54,052 INFO L93 Difference]: Finished difference Result 2656 states and 4155 transitions. [2024-11-08 18:55:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:55:54,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-08 18:55:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:55:54,061 INFO L225 Difference]: With dead ends: 2656 [2024-11-08 18:55:54,061 INFO L226 Difference]: Without dead ends: 2125 [2024-11-08 18:55:54,062 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 18:55:54,063 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 1486 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:55:54,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:55:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2024-11-08 18:55:54,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2123. [2024-11-08 18:55:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2121 states have (on average 1.5836869401225837) internal successors, (3359), 2122 states have internal predecessors, (3359), 0 states have call successors, (0), 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 18:55:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3359 transitions. [2024-11-08 18:55:54,123 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3359 transitions. Word has length 50 [2024-11-08 18:55:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:55:54,123 INFO L471 AbstractCegarLoop]: Abstraction has 2123 states and 3359 transitions. [2024-11-08 18:55:54,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 18:55:54,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3359 transitions. [2024-11-08 18:55:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:55:54,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:55:54,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:54,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:55:54,125 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:55:54,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:54,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1972195708, now seen corresponding path program 1 times [2024-11-08 18:55:54,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:54,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312710428] [2024-11-08 18:55:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:54,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:54,356 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 18:55:54,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:54,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312710428] [2024-11-08 18:55:54,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312710428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:54,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:54,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:55:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532529584] [2024-11-08 18:55:54,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:54,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:55:54,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:54,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:55:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:55:54,358 INFO L87 Difference]: Start difference. First operand 2123 states and 3359 transitions. Second operand has 4 states, 4 states have (on average 15.0) 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 18:56:03,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:03,313 INFO L93 Difference]: Finished difference Result 4378 states and 7668 transitions. [2024-11-08 18:56:03,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:56:03,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 18:56:03,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:03,328 INFO L225 Difference]: With dead ends: 4378 [2024-11-08 18:56:03,328 INFO L226 Difference]: Without dead ends: 3625 [2024-11-08 18:56:03,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:56:03,331 INFO L432 NwaCegarLoop]: 782 mSDtfsCounter, 2377 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:03,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 800 Invalid, 6399 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-11-08 18:56:03,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2024-11-08 18:56:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 3625. [2024-11-08 18:56:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3623 states have (on average 1.472536571901739) internal successors, (5335), 3624 states have internal predecessors, (5335), 0 states have call successors, (0), 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 18:56:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5335 transitions. [2024-11-08 18:56:03,453 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5335 transitions. Word has length 60 [2024-11-08 18:56:03,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:03,453 INFO L471 AbstractCegarLoop]: Abstraction has 3625 states and 5335 transitions. [2024-11-08 18:56:03,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) 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 18:56:03,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5335 transitions. [2024-11-08 18:56:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:56:03,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:03,456 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:03,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:56:03,456 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:03,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1732029494, now seen corresponding path program 1 times [2024-11-08 18:56:03,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:03,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390379610] [2024-11-08 18:56:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:03,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:03,674 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 18:56:03,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:03,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390379610] [2024-11-08 18:56:03,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390379610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:03,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:03,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:03,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151988928] [2024-11-08 18:56:03,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:03,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:03,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:03,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:03,678 INFO L87 Difference]: Start difference. First operand 3625 states and 5335 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 18:56:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:03,963 INFO L93 Difference]: Finished difference Result 9275 states and 13292 transitions. [2024-11-08 18:56:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:03,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 65 [2024-11-08 18:56:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:03,990 INFO L225 Difference]: With dead ends: 9275 [2024-11-08 18:56:03,992 INFO L226 Difference]: Without dead ends: 7937 [2024-11-08 18:56:03,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:56:03,996 INFO L432 NwaCegarLoop]: 1579 mSDtfsCounter, 4708 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:03,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4708 Valid, 3312 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2024-11-08 18:56:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 4961. [2024-11-08 18:56:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4961 states, 4959 states have (on average 1.451703972575116) internal successors, (7199), 4960 states have internal predecessors, (7199), 0 states have call successors, (0), 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 18:56:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4961 states to 4961 states and 7199 transitions. [2024-11-08 18:56:04,210 INFO L78 Accepts]: Start accepts. Automaton has 4961 states and 7199 transitions. Word has length 65 [2024-11-08 18:56:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:04,210 INFO L471 AbstractCegarLoop]: Abstraction has 4961 states and 7199 transitions. [2024-11-08 18:56:04,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 18:56:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4961 states and 7199 transitions. [2024-11-08 18:56:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:56:04,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:04,212 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:04,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:56:04,212 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:04,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2128401866, now seen corresponding path program 1 times [2024-11-08 18:56:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:04,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193840822] [2024-11-08 18:56:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:56:04,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:04,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193840822] [2024-11-08 18:56:04,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193840822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:04,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:04,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:04,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926285853] [2024-11-08 18:56:04,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:04,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:04,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:04,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:04,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:04,387 INFO L87 Difference]: Start difference. First operand 4961 states and 7199 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 18:56:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:04,675 INFO L93 Difference]: Finished difference Result 10611 states and 15156 transitions. [2024-11-08 18:56:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:04,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-08 18:56:04,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:04,718 INFO L225 Difference]: With dead ends: 10611 [2024-11-08 18:56:04,719 INFO L226 Difference]: Without dead ends: 9273 [2024-11-08 18:56:04,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:56:04,726 INFO L432 NwaCegarLoop]: 1578 mSDtfsCounter, 4700 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:04,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 3309 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2024-11-08 18:56:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 6969. [2024-11-08 18:56:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6969 states, 6967 states have (on average 1.431749677048945) internal successors, (9975), 6968 states have internal predecessors, (9975), 0 states have call successors, (0), 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 18:56:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 9975 transitions. [2024-11-08 18:56:05,046 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 9975 transitions. Word has length 65 [2024-11-08 18:56:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:05,046 INFO L471 AbstractCegarLoop]: Abstraction has 6969 states and 9975 transitions. [2024-11-08 18:56:05,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 18:56:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 9975 transitions. [2024-11-08 18:56:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:56:05,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:05,051 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:05,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:56:05,052 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:05,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:05,052 INFO L85 PathProgramCache]: Analyzing trace with hash 347469002, now seen corresponding path program 1 times [2024-11-08 18:56:05,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:05,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129678983] [2024-11-08 18:56:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:05,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:56:05,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:05,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129678983] [2024-11-08 18:56:05,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129678983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:05,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:05,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:05,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440774442] [2024-11-08 18:56:05,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:05,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:05,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:05,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:05,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:05,210 INFO L87 Difference]: Start difference. First operand 6969 states and 9975 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 18:56:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:05,521 INFO L93 Difference]: Finished difference Result 11947 states and 17020 transitions. [2024-11-08 18:56:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:05,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 65 [2024-11-08 18:56:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:05,542 INFO L225 Difference]: With dead ends: 11947 [2024-11-08 18:56:05,542 INFO L226 Difference]: Without dead ends: 10609 [2024-11-08 18:56:05,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:56:05,547 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 4667 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:05,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3361 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2024-11-08 18:56:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 8305. [2024-11-08 18:56:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8305 states, 8303 states have (on average 1.4258701674093701) internal successors, (11839), 8304 states have internal predecessors, (11839), 0 states have call successors, (0), 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 18:56:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8305 states to 8305 states and 11839 transitions. [2024-11-08 18:56:05,904 INFO L78 Accepts]: Start accepts. Automaton has 8305 states and 11839 transitions. Word has length 65 [2024-11-08 18:56:05,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:05,904 INFO L471 AbstractCegarLoop]: Abstraction has 8305 states and 11839 transitions. [2024-11-08 18:56:05,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 18:56:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8305 states and 11839 transitions. [2024-11-08 18:56:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 18:56:05,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:05,907 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:05,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:56:05,908 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:05,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:05,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1073593701, now seen corresponding path program 1 times [2024-11-08 18:56:05,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:05,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929493539] [2024-11-08 18:56:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:05,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:56:06,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:06,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929493539] [2024-11-08 18:56:06,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929493539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:06,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:06,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:06,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031158427] [2024-11-08 18:56:06,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:06,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:06,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:06,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:06,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:06,069 INFO L87 Difference]: Start difference. First operand 8305 states and 11839 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 18:56:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:06,395 INFO L93 Difference]: Finished difference Result 12531 states and 17860 transitions. [2024-11-08 18:56:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:06,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 67 [2024-11-08 18:56:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:06,418 INFO L225 Difference]: With dead ends: 12531 [2024-11-08 18:56:06,419 INFO L226 Difference]: Without dead ends: 11569 [2024-11-08 18:56:06,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:56:06,426 INFO L432 NwaCegarLoop]: 1582 mSDtfsCounter, 4701 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4701 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:06,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4701 Valid, 3363 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2024-11-08 18:56:06,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 9265. [2024-11-08 18:56:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9265 states, 9263 states have (on average 1.4249163338011444) internal successors, (13199), 9264 states have internal predecessors, (13199), 0 states have call successors, (0), 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 18:56:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 13199 transitions. [2024-11-08 18:56:06,741 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 13199 transitions. Word has length 67 [2024-11-08 18:56:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:06,741 INFO L471 AbstractCegarLoop]: Abstraction has 9265 states and 13199 transitions. [2024-11-08 18:56:06,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 18:56:06,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 13199 transitions. [2024-11-08 18:56:06,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 18:56:06,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:06,744 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:06,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:56:06,744 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:06,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:06,745 INFO L85 PathProgramCache]: Analyzing trace with hash 617761666, now seen corresponding path program 1 times [2024-11-08 18:56:06,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:06,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738626134] [2024-11-08 18:56:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:06,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:06,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:06,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738626134] [2024-11-08 18:56:06,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738626134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:06,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:06,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:06,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587827934] [2024-11-08 18:56:06,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:06,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:06,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:06,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:06,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:06,869 INFO L87 Difference]: Start difference. First operand 9265 states and 13199 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 18:56:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:07,030 INFO L93 Difference]: Finished difference Result 14567 states and 20700 transitions. [2024-11-08 18:56:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:07,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 18:56:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:07,045 INFO L225 Difference]: With dead ends: 14567 [2024-11-08 18:56:07,045 INFO L226 Difference]: Without dead ends: 7589 [2024-11-08 18:56:07,053 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 18:56:07,054 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 42 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:07,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3073 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2024-11-08 18:56:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 7587. [2024-11-08 18:56:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7585 states have (on average 1.4313777191825972) internal successors, (10857), 7586 states have internal predecessors, (10857), 0 states have call successors, (0), 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 18:56:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 10857 transitions. [2024-11-08 18:56:07,345 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 10857 transitions. Word has length 67 [2024-11-08 18:56:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:07,345 INFO L471 AbstractCegarLoop]: Abstraction has 7587 states and 10857 transitions. [2024-11-08 18:56:07,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 18:56:07,346 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 10857 transitions. [2024-11-08 18:56:07,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 18:56:07,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:07,347 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:07,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:56:07,348 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:07,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:07,348 INFO L85 PathProgramCache]: Analyzing trace with hash 722057953, now seen corresponding path program 1 times [2024-11-08 18:56:07,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:07,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909214211] [2024-11-08 18:56:07,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:07,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:07,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:07,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909214211] [2024-11-08 18:56:07,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909214211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:07,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:07,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:07,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651282710] [2024-11-08 18:56:07,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:07,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:07,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:07,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:07,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:07,456 INFO L87 Difference]: Start difference. First operand 7587 states and 10857 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 18:56:07,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:07,554 INFO L93 Difference]: Finished difference Result 10231 states and 14555 transitions. [2024-11-08 18:56:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:07,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-08 18:56:07,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:07,566 INFO L225 Difference]: With dead ends: 10231 [2024-11-08 18:56:07,566 INFO L226 Difference]: Without dead ends: 4949 [2024-11-08 18:56:07,571 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 18:56:07,572 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:07,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3058 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2024-11-08 18:56:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4947. [2024-11-08 18:56:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4947 states, 4945 states have (on average 1.439231547017189) internal successors, (7117), 4946 states have internal predecessors, (7117), 0 states have call successors, (0), 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 18:56:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7117 transitions. [2024-11-08 18:56:07,700 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7117 transitions. Word has length 68 [2024-11-08 18:56:07,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:07,701 INFO L471 AbstractCegarLoop]: Abstraction has 4947 states and 7117 transitions. [2024-11-08 18:56:07,701 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 18:56:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7117 transitions. [2024-11-08 18:56:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 18:56:07,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:07,702 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:07,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:56:07,703 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:07,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1602623827, now seen corresponding path program 1 times [2024-11-08 18:56:07,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:07,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130639933] [2024-11-08 18:56:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:07,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:07,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:07,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130639933] [2024-11-08 18:56:07,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130639933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:07,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:07,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:07,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496714821] [2024-11-08 18:56:07,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:07,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:07,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:07,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:07,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:07,811 INFO L87 Difference]: Start difference. First operand 4947 states and 7117 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 18:56:07,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:07,875 INFO L93 Difference]: Finished difference Result 6271 states and 8945 transitions. [2024-11-08 18:56:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:07,876 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 18:56:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:07,883 INFO L225 Difference]: With dead ends: 6271 [2024-11-08 18:56:07,884 INFO L226 Difference]: Without dead ends: 3629 [2024-11-08 18:56:07,887 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 18:56:07,888 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 34 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:07,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2024-11-08 18:56:07,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3627. [2024-11-08 18:56:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3625 states have (on average 1.4535172413793103) internal successors, (5269), 3626 states have internal predecessors, (5269), 0 states have call successors, (0), 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 18:56:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 5269 transitions. [2024-11-08 18:56:07,973 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 5269 transitions. Word has length 70 [2024-11-08 18:56:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:07,973 INFO L471 AbstractCegarLoop]: Abstraction has 3627 states and 5269 transitions. [2024-11-08 18:56:07,973 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 18:56:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 5269 transitions. [2024-11-08 18:56:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 18:56:07,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:07,975 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, 1, 1, 1, 1] [2024-11-08 18:56:07,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 18:56:07,975 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:07,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash 772693573, now seen corresponding path program 1 times [2024-11-08 18:56:07,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:07,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781826789] [2024-11-08 18:56:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:08,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:08,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781826789] [2024-11-08 18:56:08,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781826789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:08,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:08,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:08,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078342027] [2024-11-08 18:56:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:08,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:08,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:08,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:08,090 INFO L87 Difference]: Start difference. First operand 3627 states and 5269 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 18:56:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:08,138 INFO L93 Difference]: Finished difference Result 4291 states and 6173 transitions. [2024-11-08 18:56:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:08,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-11-08 18:56:08,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:08,144 INFO L225 Difference]: With dead ends: 4291 [2024-11-08 18:56:08,144 INFO L226 Difference]: Without dead ends: 2969 [2024-11-08 18:56:08,146 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 18:56:08,147 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 31 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:08,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:08,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2024-11-08 18:56:08,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2967. [2024-11-08 18:56:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2965 states have (on average 1.4691399662731872) internal successors, (4356), 2966 states have internal predecessors, (4356), 0 states have call successors, (0), 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 18:56:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4356 transitions. [2024-11-08 18:56:08,210 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4356 transitions. Word has length 72 [2024-11-08 18:56:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:08,211 INFO L471 AbstractCegarLoop]: Abstraction has 2967 states and 4356 transitions. [2024-11-08 18:56:08,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 18:56:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4356 transitions. [2024-11-08 18:56:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 18:56:08,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:08,212 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:08,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 18:56:08,213 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:08,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash 141928887, now seen corresponding path program 1 times [2024-11-08 18:56:08,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:08,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506363568] [2024-11-08 18:56:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:08,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:10,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:10,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506363568] [2024-11-08 18:56:10,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506363568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:10,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167236933] [2024-11-08 18:56:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:10,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:10,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:10,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:10,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:56:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:10,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:56:10,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:11,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:11,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167236933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:11,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:11,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-08 18:56:11,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167045365] [2024-11-08 18:56:11,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:11,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 18:56:11,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:11,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 18:56:11,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:56:11,418 INFO L87 Difference]: Start difference. First operand 2967 states and 4356 transitions. Second operand has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 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 18:56:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:19,255 INFO L93 Difference]: Finished difference Result 8877 states and 12148 transitions. [2024-11-08 18:56:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-08 18:56:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 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 74 [2024-11-08 18:56:19,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:19,270 INFO L225 Difference]: With dead ends: 8877 [2024-11-08 18:56:19,271 INFO L226 Difference]: Without dead ends: 8141 [2024-11-08 18:56:19,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4087 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1855, Invalid=9487, Unknown=0, NotChecked=0, Total=11342 [2024-11-08 18:56:19,277 INFO L432 NwaCegarLoop]: 1511 mSDtfsCounter, 15809 mSDsluCounter, 7884 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15809 SdHoareTripleChecker+Valid, 9395 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:19,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15809 Valid, 9395 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 18:56:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8141 states. [2024-11-08 18:56:19,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8141 to 7559. [2024-11-08 18:56:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7559 states, 7557 states have (on average 1.3616514489876936) internal successors, (10290), 7558 states have internal predecessors, (10290), 0 states have call successors, (0), 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 18:56:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7559 states to 7559 states and 10290 transitions. [2024-11-08 18:56:19,575 INFO L78 Accepts]: Start accepts. Automaton has 7559 states and 10290 transitions. Word has length 74 [2024-11-08 18:56:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:19,576 INFO L471 AbstractCegarLoop]: Abstraction has 7559 states and 10290 transitions. [2024-11-08 18:56:19,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 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 18:56:19,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7559 states and 10290 transitions. [2024-11-08 18:56:19,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 18:56:19,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:19,577 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:19,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 18:56:19,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:19,780 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:19,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:19,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1045727047, now seen corresponding path program 1 times [2024-11-08 18:56:19,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:19,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776940604] [2024-11-08 18:56:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:19,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:21,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:21,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776940604] [2024-11-08 18:56:21,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776940604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:21,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711510378] [2024-11-08 18:56:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:21,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:21,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:21,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:21,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:56:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:21,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:56:21,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:22,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:23,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711510378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:23,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:23,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-11-08 18:56:23,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63664917] [2024-11-08 18:56:23,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:23,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 18:56:23,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:23,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 18:56:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:56:23,633 INFO L87 Difference]: Start difference. First operand 7559 states and 10290 transitions. Second operand has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 28 states have internal predecessors, (197), 0 states have call successors, (0), 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 18:56:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:26,724 INFO L93 Difference]: Finished difference Result 29795 states and 39332 transitions. [2024-11-08 18:56:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 18:56:26,725 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 28 states have internal predecessors, (197), 0 states have call successors, (0), 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 75 [2024-11-08 18:56:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:26,762 INFO L225 Difference]: With dead ends: 29795 [2024-11-08 18:56:26,762 INFO L226 Difference]: Without dead ends: 24621 [2024-11-08 18:56:26,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=957, Invalid=3735, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 18:56:26,773 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 20225 mSDsluCounter, 6411 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20225 SdHoareTripleChecker+Valid, 7908 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:26,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20225 Valid, 7908 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:56:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24621 states. [2024-11-08 18:56:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24621 to 24337. [2024-11-08 18:56:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24337 states, 24335 states have (on average 1.2940209574686665) internal successors, (31490), 24336 states have internal predecessors, (31490), 0 states have call successors, (0), 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 18:56:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24337 states to 24337 states and 31490 transitions. [2024-11-08 18:56:27,741 INFO L78 Accepts]: Start accepts. Automaton has 24337 states and 31490 transitions. Word has length 75 [2024-11-08 18:56:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:27,742 INFO L471 AbstractCegarLoop]: Abstraction has 24337 states and 31490 transitions. [2024-11-08 18:56:27,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 28 states have internal predecessors, (197), 0 states have call successors, (0), 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 18:56:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 24337 states and 31490 transitions. [2024-11-08 18:56:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 18:56:27,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:27,745 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, 1, 1, 1, 1, 1] [2024-11-08 18:56:27,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:56:27,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 18:56:27,946 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:27,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:27,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1702612039, now seen corresponding path program 1 times [2024-11-08 18:56:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:27,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85527209] [2024-11-08 18:56:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:27,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:28,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85527209] [2024-11-08 18:56:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85527209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:28,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246508339] [2024-11-08 18:56:28,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:28,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:28,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:28,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:28,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:56:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:28,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 18:56:28,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:29,440 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 18:56:29,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:31,352 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 18:56:31,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246508339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:31,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:31,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-11-08 18:56:31,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662202877] [2024-11-08 18:56:31,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:31,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 18:56:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 18:56:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:56:31,355 INFO L87 Difference]: Start difference. First operand 24337 states and 31490 transitions. Second operand has 28 states, 28 states have (on average 6.821428571428571) internal successors, (191), 28 states have internal predecessors, (191), 0 states have call successors, (0), 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 18:56:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:35,086 INFO L93 Difference]: Finished difference Result 57365 states and 73618 transitions. [2024-11-08 18:56:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:56:35,087 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.821428571428571) internal successors, (191), 28 states have internal predecessors, (191), 0 states have call successors, (0), 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 75 [2024-11-08 18:56:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:35,139 INFO L225 Difference]: With dead ends: 57365 [2024-11-08 18:56:35,139 INFO L226 Difference]: Without dead ends: 42531 [2024-11-08 18:56:35,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=665, Invalid=2641, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 18:56:35,155 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 13264 mSDsluCounter, 13720 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13264 SdHoareTripleChecker+Valid, 15225 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:35,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13264 Valid, 15225 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:56:35,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42531 states. [2024-11-08 18:56:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42531 to 41615. [2024-11-08 18:56:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41615 states, 41613 states have (on average 1.2722706846418186) internal successors, (52943), 41614 states have internal predecessors, (52943), 0 states have call successors, (0), 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 18:56:36,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41615 states to 41615 states and 52943 transitions. [2024-11-08 18:56:36,828 INFO L78 Accepts]: Start accepts. Automaton has 41615 states and 52943 transitions. Word has length 75 [2024-11-08 18:56:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:36,828 INFO L471 AbstractCegarLoop]: Abstraction has 41615 states and 52943 transitions. [2024-11-08 18:56:36,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.821428571428571) internal successors, (191), 28 states have internal predecessors, (191), 0 states have call successors, (0), 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 18:56:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 41615 states and 52943 transitions. [2024-11-08 18:56:36,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 18:56:36,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:36,831 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, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:36,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 18:56:37,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 18:56:37,036 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:37,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:37,036 INFO L85 PathProgramCache]: Analyzing trace with hash 662065529, now seen corresponding path program 1 times [2024-11-08 18:56:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:37,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741350862] [2024-11-08 18:56:37,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:37,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:37,532 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 18:56:37,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:37,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741350862] [2024-11-08 18:56:37,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741350862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614022260] [2024-11-08 18:56:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:37,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:37,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:37,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:37,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:56:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:37,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 18:56:37,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:38,160 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 18:56:38,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:39,130 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 18:56:39,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614022260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:39,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:39,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-08 18:56:39,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068530293] [2024-11-08 18:56:39,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:39,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:56:39,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:39,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:56:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:56:39,132 INFO L87 Difference]: Start difference. First operand 41615 states and 52943 transitions. Second operand has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 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 18:56:40,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:40,333 INFO L93 Difference]: Finished difference Result 59513 states and 75889 transitions. [2024-11-08 18:56:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:56:40,333 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 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 76 [2024-11-08 18:56:40,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:40,364 INFO L225 Difference]: With dead ends: 59513 [2024-11-08 18:56:40,364 INFO L226 Difference]: Without dead ends: 21307 [2024-11-08 18:56:40,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2024-11-08 18:56:40,385 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 13780 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13780 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:40,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13780 Valid, 4784 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:56:40,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21307 states. [2024-11-08 18:56:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21307 to 21303. [2024-11-08 18:56:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21303 states, 21301 states have (on average 1.2982019623491854) internal successors, (27653), 21302 states have internal predecessors, (27653), 0 states have call successors, (0), 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 18:56:41,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21303 states to 21303 states and 27653 transitions. [2024-11-08 18:56:41,413 INFO L78 Accepts]: Start accepts. Automaton has 21303 states and 27653 transitions. Word has length 76 [2024-11-08 18:56:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:41,414 INFO L471 AbstractCegarLoop]: Abstraction has 21303 states and 27653 transitions. [2024-11-08 18:56:41,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 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 18:56:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 21303 states and 27653 transitions. [2024-11-08 18:56:41,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 18:56:41,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:41,416 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, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:41,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:56:41,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:41,617 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:41,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash 681976073, now seen corresponding path program 1 times [2024-11-08 18:56:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:41,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645129332] [2024-11-08 18:56:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:41,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:42,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:42,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645129332] [2024-11-08 18:56:42,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645129332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:42,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124130559] [2024-11-08 18:56:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:42,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:42,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:42,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:42,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:56:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:42,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 18:56:42,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:43,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:44,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124130559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:44,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:44,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-08 18:56:44,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195163079] [2024-11-08 18:56:44,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:44,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 18:56:44,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:44,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 18:56:44,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-08 18:56:44,589 INFO L87 Difference]: Start difference. First operand 21303 states and 27653 transitions. Second operand has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 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 18:56:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:53,100 INFO L93 Difference]: Finished difference Result 72041 states and 92529 transitions. [2024-11-08 18:56:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-08 18:56:53,100 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 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 76 [2024-11-08 18:56:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:53,171 INFO L225 Difference]: With dead ends: 72041 [2024-11-08 18:56:53,171 INFO L226 Difference]: Without dead ends: 54249 [2024-11-08 18:56:53,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3362 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1805, Invalid=9537, Unknown=0, NotChecked=0, Total=11342 [2024-11-08 18:56:53,194 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 20131 mSDsluCounter, 15493 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20131 SdHoareTripleChecker+Valid, 16988 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:53,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20131 Valid, 16988 Invalid, 1517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:56:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54249 states. [2024-11-08 18:56:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54249 to 20257. [2024-11-08 18:56:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20257 states, 20255 states have (on average 1.2871389780301161) internal successors, (26071), 20256 states have internal predecessors, (26071), 0 states have call successors, (0), 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 18:56:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20257 states to 20257 states and 26071 transitions. [2024-11-08 18:56:54,346 INFO L78 Accepts]: Start accepts. Automaton has 20257 states and 26071 transitions. Word has length 76 [2024-11-08 18:56:54,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:54,347 INFO L471 AbstractCegarLoop]: Abstraction has 20257 states and 26071 transitions. [2024-11-08 18:56:54,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 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 18:56:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 20257 states and 26071 transitions. [2024-11-08 18:56:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 18:56:54,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:54,348 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:54,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:56:54,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:54,549 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:54,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:54,549 INFO L85 PathProgramCache]: Analyzing trace with hash 651834409, now seen corresponding path program 1 times [2024-11-08 18:56:54,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:54,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972755869] [2024-11-08 18:56:54,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:54,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:55,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:55,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972755869] [2024-11-08 18:56:55,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972755869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:55,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064920014] [2024-11-08 18:56:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:55,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:55,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:55,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:55,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:56:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:55,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 18:56:55,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:56,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:57,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064920014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:57,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:57,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-08 18:56:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567719383] [2024-11-08 18:56:57,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:57,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 18:56:57,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:57,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 18:56:57,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 18:56:57,698 INFO L87 Difference]: Start difference. First operand 20257 states and 26071 transitions. Second operand has 33 states, 33 states have (on average 6.333333333333333) internal successors, (209), 33 states have internal predecessors, (209), 0 states have call successors, (0), 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 18:57:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:57:04,422 INFO L93 Difference]: Finished difference Result 36101 states and 45940 transitions. [2024-11-08 18:57:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 18:57:04,422 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.333333333333333) internal successors, (209), 33 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-08 18:57:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:57:04,446 INFO L225 Difference]: With dead ends: 36101 [2024-11-08 18:57:04,446 INFO L226 Difference]: Without dead ends: 25627 [2024-11-08 18:57:04,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2219 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1571, Invalid=6261, Unknown=0, NotChecked=0, Total=7832 [2024-11-08 18:57:04,457 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 7439 mSDsluCounter, 21963 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7439 SdHoareTripleChecker+Valid, 23506 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:57:04,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7439 Valid, 23506 Invalid, 1703 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 18:57:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25627 states. [2024-11-08 18:57:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25627 to 16526. [2024-11-08 18:57:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16526 states, 16524 states have (on average 1.290728637133866) internal successors, (21328), 16525 states have internal predecessors, (21328), 0 states have call successors, (0), 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 18:57:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 21328 transitions. [2024-11-08 18:57:05,394 INFO L78 Accepts]: Start accepts. Automaton has 16526 states and 21328 transitions. Word has length 77 [2024-11-08 18:57:05,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:57:05,394 INFO L471 AbstractCegarLoop]: Abstraction has 16526 states and 21328 transitions. [2024-11-08 18:57:05,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.333333333333333) internal successors, (209), 33 states have internal predecessors, (209), 0 states have call successors, (0), 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 18:57:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 16526 states and 21328 transitions. [2024-11-08 18:57:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-08 18:57:05,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:57:05,398 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:57:05,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:57:05,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 18:57:05,598 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:57:05,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:57:05,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1550402566, now seen corresponding path program 1 times [2024-11-08 18:57:05,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:57:05,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588758690] [2024-11-08 18:57:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:57:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 22 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:06,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:57:06,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588758690] [2024-11-08 18:57:06,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588758690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:57:06,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864414822] [2024-11-08 18:57:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:06,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:06,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:57:06,687 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:57:06,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:57:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:06,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:57:06,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:57:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 30 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:10,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 30 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:14,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864414822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:57:14,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:57:14,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 45 [2024-11-08 18:57:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573735854] [2024-11-08 18:57:14,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:57:14,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-08 18:57:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:57:14,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-08 18:57:14,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 18:57:14,642 INFO L87 Difference]: Start difference. First operand 16526 states and 21328 transitions. Second operand has 45 states, 45 states have (on average 7.533333333333333) internal successors, (339), 45 states have internal predecessors, (339), 0 states have call successors, (0), 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 18:57:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:57:36,896 INFO L93 Difference]: Finished difference Result 30389 states and 38940 transitions. [2024-11-08 18:57:36,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-08 18:57:36,897 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 7.533333333333333) internal successors, (339), 45 states have internal predecessors, (339), 0 states have call successors, (0), 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 123 [2024-11-08 18:57:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:57:36,923 INFO L225 Difference]: With dead ends: 30389 [2024-11-08 18:57:36,923 INFO L226 Difference]: Without dead ends: 23214 [2024-11-08 18:57:36,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5500 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=3251, Invalid=16489, Unknown=0, NotChecked=0, Total=19740 [2024-11-08 18:57:36,934 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 23279 mSDsluCounter, 21086 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23279 SdHoareTripleChecker+Valid, 22660 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:57:36,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23279 Valid, 22660 Invalid, 2637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 18:57:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23214 states. [2024-11-08 18:57:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23214 to 19767. [2024-11-08 18:57:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19767 states, 19765 states have (on average 1.2696180116367315) internal successors, (25094), 19766 states have internal predecessors, (25094), 0 states have call successors, (0), 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 18:57:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19767 states to 19767 states and 25094 transitions. [2024-11-08 18:57:38,234 INFO L78 Accepts]: Start accepts. Automaton has 19767 states and 25094 transitions. Word has length 123 [2024-11-08 18:57:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:57:38,235 INFO L471 AbstractCegarLoop]: Abstraction has 19767 states and 25094 transitions. [2024-11-08 18:57:38,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 7.533333333333333) internal successors, (339), 45 states have internal predecessors, (339), 0 states have call successors, (0), 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 18:57:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 19767 states and 25094 transitions. [2024-11-08 18:57:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-08 18:57:38,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:57:38,237 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 18:57:38,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:57:38,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 18:57:38,438 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:57:38,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:57:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash 891654180, now seen corresponding path program 1 times [2024-11-08 18:57:38,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:57:38,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14724953] [2024-11-08 18:57:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:38,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:57:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 40 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:39,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:57:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14724953] [2024-11-08 18:57:39,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14724953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:57:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080077516] [2024-11-08 18:57:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:39,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:39,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:57:39,564 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:57:39,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:57:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:39,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:57:39,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:57:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 42 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:40,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 40 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:42,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080077516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:57:42,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:57:42,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-08 18:57:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805253770] [2024-11-08 18:57:42,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:57:42,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 18:57:42,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:57:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 18:57:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-08 18:57:42,890 INFO L87 Difference]: Start difference. First operand 19767 states and 25094 transitions. Second operand has 27 states, 27 states have (on average 9.962962962962964) internal successors, (269), 26 states have internal predecessors, (269), 0 states have call successors, (0), 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 18:57:45,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:57:45,720 INFO L93 Difference]: Finished difference Result 59842 states and 75329 transitions. [2024-11-08 18:57:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:57:45,720 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.962962962962964) internal successors, (269), 26 states have internal predecessors, (269), 0 states have call successors, (0), 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 124 [2024-11-08 18:57:45,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:57:45,758 INFO L225 Difference]: With dead ends: 59842 [2024-11-08 18:57:45,758 INFO L226 Difference]: Without dead ends: 44969 [2024-11-08 18:57:45,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=379, Invalid=1343, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:57:45,770 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 21105 mSDsluCounter, 9350 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21105 SdHoareTripleChecker+Valid, 10880 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:57:45,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21105 Valid, 10880 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:57:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44969 states. [2024-11-08 18:57:48,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44969 to 39111. [2024-11-08 18:57:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39111 states, 39109 states have (on average 1.2427318520033752) internal successors, (48602), 39110 states have internal predecessors, (48602), 0 states have call successors, (0), 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 18:57:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39111 states to 39111 states and 48602 transitions. [2024-11-08 18:57:48,184 INFO L78 Accepts]: Start accepts. Automaton has 39111 states and 48602 transitions. Word has length 124 [2024-11-08 18:57:48,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:57:48,184 INFO L471 AbstractCegarLoop]: Abstraction has 39111 states and 48602 transitions. [2024-11-08 18:57:48,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.962962962962964) internal successors, (269), 26 states have internal predecessors, (269), 0 states have call successors, (0), 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 18:57:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 39111 states and 48602 transitions. [2024-11-08 18:57:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-08 18:57:48,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:57:48,191 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:57:48,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:57:48,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 18:57:48,392 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:57:48,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:57:48,393 INFO L85 PathProgramCache]: Analyzing trace with hash 32182786, now seen corresponding path program 1 times [2024-11-08 18:57:48,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:57:48,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120337263] [2024-11-08 18:57:48,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:48,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:57:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 43 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:49,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:57:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120337263] [2024-11-08 18:57:49,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120337263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:57:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27332749] [2024-11-08 18:57:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:49,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:57:49,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:57:49,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:57:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:49,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 18:57:49,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:58:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 67 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 18:58:01,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:58:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 34 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:58:13,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27332749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:58:13,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:58:13,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 29, 28] total 67 [2024-11-08 18:58:13,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619213212] [2024-11-08 18:58:13,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:58:13,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-08 18:58:13,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:58:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-08 18:58:13,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=3864, Unknown=1, NotChecked=0, Total=4422 [2024-11-08 18:58:13,498 INFO L87 Difference]: Start difference. First operand 39111 states and 48602 transitions. Second operand has 67 states, 67 states have (on average 4.6716417910447765) internal successors, (313), 67 states have internal predecessors, (313), 0 states have call successors, (0), 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 19:01:05,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:01:05,195 INFO L93 Difference]: Finished difference Result 93327 states and 115623 transitions. [2024-11-08 19:01:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2024-11-08 19:01:05,195 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.6716417910447765) internal successors, (313), 67 states have internal predecessors, (313), 0 states have call successors, (0), 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 124 [2024-11-08 19:01:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:01:05,256 INFO L225 Difference]: With dead ends: 93327 [2024-11-08 19:01:05,256 INFO L226 Difference]: Without dead ends: 67817 [2024-11-08 19:01:05,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23179 ImplicationChecksByTransitivity, 170.2s TimeCoverageRelationStatistics Valid=8426, Invalid=59955, Unknown=1, NotChecked=0, Total=68382 [2024-11-08 19:01:05,276 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 37595 mSDsluCounter, 22581 mSDsCounter, 0 mSdLazyCounter, 4015 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37595 SdHoareTripleChecker+Valid, 24141 SdHoareTripleChecker+Invalid, 4302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 4015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-08 19:01:05,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37595 Valid, 24141 Invalid, 4302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [287 Valid, 4015 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-08 19:01:05,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67817 states. [2024-11-08 19:01:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67817 to 42493. [2024-11-08 19:01:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42493 states, 42491 states have (on average 1.2335788755265822) internal successors, (52416), 42492 states have internal predecessors, (52416), 0 states have call successors, (0), 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 19:01:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42493 states to 42493 states and 52416 transitions. [2024-11-08 19:01:09,279 INFO L78 Accepts]: Start accepts. Automaton has 42493 states and 52416 transitions. Word has length 124 [2024-11-08 19:01:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:01:09,279 INFO L471 AbstractCegarLoop]: Abstraction has 42493 states and 52416 transitions. [2024-11-08 19:01:09,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.6716417910447765) internal successors, (313), 67 states have internal predecessors, (313), 0 states have call successors, (0), 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 19:01:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 42493 states and 52416 transitions. [2024-11-08 19:01:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 19:01:09,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:01:09,292 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:01:09,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 19:01:09,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 19:01:09,495 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:01:09,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:09,496 INFO L85 PathProgramCache]: Analyzing trace with hash 809845466, now seen corresponding path program 1 times [2024-11-08 19:01:09,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:09,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135990302] [2024-11-08 19:01:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:09,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 34 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:11,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:11,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135990302] [2024-11-08 19:01:11,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135990302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:01:11,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254655810] [2024-11-08 19:01:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:11,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:01:11,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:01:11,156 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:01:11,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:01:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:11,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 19:01:11,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:01:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 36 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:13,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:01:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 54 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:14,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254655810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:01:14,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:01:14,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 33 [2024-11-08 19:01:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052632135] [2024-11-08 19:01:14,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:01:14,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 19:01:14,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 19:01:14,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 19:01:14,661 INFO L87 Difference]: Start difference. First operand 42493 states and 52416 transitions. Second operand has 33 states, 33 states have (on average 9.121212121212121) internal successors, (301), 33 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 19:01:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:01:27,370 INFO L93 Difference]: Finished difference Result 90057 states and 110994 transitions. [2024-11-08 19:01:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-08 19:01:27,370 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.121212121212121) internal successors, (301), 33 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) Word has length 125 [2024-11-08 19:01:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:01:27,445 INFO L225 Difference]: With dead ends: 90057 [2024-11-08 19:01:27,445 INFO L226 Difference]: Without dead ends: 57909 [2024-11-08 19:01:27,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1877, Invalid=8629, Unknown=0, NotChecked=0, Total=10506 [2024-11-08 19:01:27,460 INFO L432 NwaCegarLoop]: 1655 mSDtfsCounter, 23086 mSDsluCounter, 15966 mSDsCounter, 0 mSdLazyCounter, 3151 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23086 SdHoareTripleChecker+Valid, 17621 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:01:27,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23086 Valid, 17621 Invalid, 3208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 3151 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 19:01:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57909 states. [2024-11-08 19:01:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57909 to 21529. [2024-11-08 19:01:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21529 states, 21527 states have (on average 1.245459190783667) internal successors, (26811), 21528 states have internal predecessors, (26811), 0 states have call successors, (0), 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 19:01:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21529 states to 21529 states and 26811 transitions. [2024-11-08 19:01:30,007 INFO L78 Accepts]: Start accepts. Automaton has 21529 states and 26811 transitions. Word has length 125 [2024-11-08 19:01:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:01:30,007 INFO L471 AbstractCegarLoop]: Abstraction has 21529 states and 26811 transitions. [2024-11-08 19:01:30,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.121212121212121) internal successors, (301), 33 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 19:01:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 21529 states and 26811 transitions. [2024-11-08 19:01:30,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 19:01:30,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:01:30,012 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:30,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 19:01:30,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 19:01:30,216 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:01:30,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:30,217 INFO L85 PathProgramCache]: Analyzing trace with hash 695015072, now seen corresponding path program 1 times [2024-11-08 19:01:30,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:30,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485771034] [2024-11-08 19:01:30,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:30,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 44 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:31,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:31,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485771034] [2024-11-08 19:01:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485771034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:01:31,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591071157] [2024-11-08 19:01:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:31,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:01:31,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:01:31,701 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:01:31,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 19:01:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:31,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-08 19:01:31,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:01:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 44 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:40,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:01:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:58,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591071157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:01:58,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:01:58,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 33, 31] total 80 [2024-11-08 19:01:58,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608704819] [2024-11-08 19:01:58,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:01:58,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-08 19:01:58,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:58,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-08 19:01:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=5744, Unknown=0, NotChecked=0, Total=6320 [2024-11-08 19:01:58,803 INFO L87 Difference]: Start difference. First operand 21529 states and 26811 transitions. Second operand has 80 states, 80 states have (on average 4.325) internal successors, (346), 80 states have internal predecessors, (346), 0 states have call successors, (0), 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 19:08:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:31,121 INFO L93 Difference]: Finished difference Result 123665 states and 150375 transitions. [2024-11-08 19:08:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 495 states. [2024-11-08 19:08:31,121 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.325) internal successors, (346), 80 states have internal predecessors, (346), 0 states have call successors, (0), 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 126 [2024-11-08 19:08:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:31,239 INFO L225 Difference]: With dead ends: 123665 [2024-11-08 19:08:31,239 INFO L226 Difference]: Without dead ends: 115623 [2024-11-08 19:08:31,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142649 ImplicationChecksByTransitivity, 370.1s TimeCoverageRelationStatistics Valid=38493, Invalid=283563, Unknown=0, NotChecked=0, Total=322056 [2024-11-08 19:08:31,271 INFO L432 NwaCegarLoop]: 1626 mSDtfsCounter, 35264 mSDsluCounter, 48945 mSDsCounter, 0 mSdLazyCounter, 8138 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35264 SdHoareTripleChecker+Valid, 50571 SdHoareTripleChecker+Invalid, 8500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 8138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:31,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35264 Valid, 50571 Invalid, 8500 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [362 Valid, 8138 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2024-11-08 19:08:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115623 states. [2024-11-08 19:08:36,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115623 to 41392. [2024-11-08 19:08:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41392 states, 41390 states have (on average 1.2341870016912297) internal successors, (51083), 41391 states have internal predecessors, (51083), 0 states have call successors, (0), 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 19:08:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41392 states to 41392 states and 51083 transitions. [2024-11-08 19:08:37,045 INFO L78 Accepts]: Start accepts. Automaton has 41392 states and 51083 transitions. Word has length 126 [2024-11-08 19:08:37,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:37,046 INFO L471 AbstractCegarLoop]: Abstraction has 41392 states and 51083 transitions. [2024-11-08 19:08:37,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.325) internal successors, (346), 80 states have internal predecessors, (346), 0 states have call successors, (0), 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 19:08:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 41392 states and 51083 transitions. [2024-11-08 19:08:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 19:08:37,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:37,051 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:37,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 19:08:37,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:08:37,252 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:37,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1334800068, now seen corresponding path program 1 times [2024-11-08 19:08:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043315827] [2024-11-08 19:08:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 43 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:40,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:40,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043315827] [2024-11-08 19:08:40,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043315827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:08:40,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973951210] [2024-11-08 19:08:40,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:40,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:08:40,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:08:40,169 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:08:40,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3df578c-6030-40c5-92a9-e49c21652e62/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 19:08:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:40,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 19:08:40,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:08:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 16 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:44,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:08:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 16 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:49,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973951210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:08:49,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:08:49,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 18] total 60 [2024-11-08 19:08:49,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919166288] [2024-11-08 19:08:49,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:08:49,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-08 19:08:49,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:49,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-08 19:08:49,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3305, Unknown=0, NotChecked=0, Total=3540 [2024-11-08 19:08:49,972 INFO L87 Difference]: Start difference. First operand 41392 states and 51083 transitions. Second operand has 60 states, 60 states have (on average 6.05) internal successors, (363), 60 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)