./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1 --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 f28b91143467a6885de009814531d324420ecf879f456eaa915411039fe43e58 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:43:35,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:43:35,082 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:43:35,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:43:35,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:43:35,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:43:35,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:43:35,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:43:35,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:43:35,108 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:43:35,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:43:35,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:43:35,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:43:35,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:43:35,108 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:43:35,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:43:35,109 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:43:35,110 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:43:35,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:43:35,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:43:35,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:43:35,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:43:35,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:43:35,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:43:35,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:43:35,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:43:35,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:43:35,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:43:35,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:43:35,111 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:43:35,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:43:35,111 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:43:35,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:43:35,111 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:43:35,111 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:43:35,111 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:43:35,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:43:35,111 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1 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 -> f28b91143467a6885de009814531d324420ecf879f456eaa915411039fe43e58 [2024-12-02 07:43:35,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:43:35,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:43:35,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:43:35,356 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:43:35,357 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:43:35,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-12-02 07:43:38,027 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/data/75c652fab/d94a5730521747d5a255b870b64c160e/FLAG248452de8 [2024-12-02 07:43:38,487 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:43:38,487 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-12-02 07:43:38,516 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/data/75c652fab/d94a5730521747d5a255b870b64c160e/FLAG248452de8 [2024-12-02 07:43:38,531 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/data/75c652fab/d94a5730521747d5a255b870b64c160e [2024-12-02 07:43:38,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:43:38,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:43:38,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:43:38,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:43:38,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:43:38,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:43:38" (1/1) ... [2024-12-02 07:43:38,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ccdeab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:38, skipping insertion in model container [2024-12-02 07:43:38,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:43:38" (1/1) ... [2024-12-02 07:43:38,641 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:43:38,896 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_bb8b96a9-6c9f-4b83-b14c-f3b523902890/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c[6450,6463] [2024-12-02 07:43:38,950 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_bb8b96a9-6c9f-4b83-b14c-f3b523902890/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c[13386,13399] [2024-12-02 07:43:39,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:43:39,548 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:43:39,572 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_bb8b96a9-6c9f-4b83-b14c-f3b523902890/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c[6450,6463] [2024-12-02 07:43:39,584 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_bb8b96a9-6c9f-4b83-b14c-f3b523902890/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c[13386,13399] [2024-12-02 07:43:39,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:43:40,009 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:43:40,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40 WrapperNode [2024-12-02 07:43:40,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:43:40,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:43:40,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:43:40,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:43:40,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,345 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-12-02 07:43:40,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:43:40,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:43:40,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:43:40,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:43:40,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,503 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]. [2024-12-02 07:43:40,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,632 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:43:40,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:43:40,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:43:40,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:43:40,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (1/1) ... [2024-12-02 07:43:40,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:43:40,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:43:40,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:43:40,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:43:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:43:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:43:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:43:40,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:43:40,852 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:43:40,853 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:43:45,045 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-12-02 07:43:45,045 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:43:45,071 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:43:45,071 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 07:43:45,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:43:45 BoogieIcfgContainer [2024-12-02 07:43:45,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:43:45,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:43:45,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:43:45,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:43:45,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:43:38" (1/3) ... [2024-12-02 07:43:45,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db3fc8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:43:45, skipping insertion in model container [2024-12-02 07:43:45,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:40" (2/3) ... [2024-12-02 07:43:45,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db3fc8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:43:45, skipping insertion in model container [2024-12-02 07:43:45,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:43:45" (3/3) ... [2024-12-02 07:43:45,081 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-12-02 07:43:45,092 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:43:45,094 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label05.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 07:43:45,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:43:45,169 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;@4c62885e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:43:45,169 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 07:43:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 07:43:45,181 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:45,181 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:43:45,181 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:45,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-12-02 07:43:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:45,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639277601] [2024-12-02 07:43:45,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:45,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639277601] [2024-12-02 07:43:45,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639277601] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:45,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:45,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:43:45,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941989736] [2024-12-02 07:43:45,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:45,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:43:45,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:45,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:43:45,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:43:45,377 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:45,450 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-12-02 07:43:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:43:45,452 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-12-02 07:43:45,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:45,464 INFO L225 Difference]: With dead ends: 1724 [2024-12-02 07:43:45,465 INFO L226 Difference]: Without dead ends: 808 [2024-12-02 07:43:45,469 INFO L434 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 [2024-12-02 07:43:45,472 INFO L435 NwaCegarLoop]: 1591 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, 1591 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 [2024-12-02 07:43:45,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-12-02 07:43:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-12-02 07:43:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-12-02 07:43:45,539 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-12-02 07:43:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:45,540 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-12-02 07:43:45,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-12-02 07:43:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 07:43:45,541 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:45,541 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:43:45,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:43:45,542 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:45,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:45,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-12-02 07:43:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:45,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413142422] [2024-12-02 07:43:45,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:45,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:45,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:45,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413142422] [2024-12-02 07:43:45,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413142422] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:45,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:45,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:43:45,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743635208] [2024-12-02 07:43:45,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:45,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:43:45,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:45,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:43:45,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:43:45,754 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:45,873 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-12-02 07:43:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:43:45,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-12-02 07:43:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:45,879 INFO L225 Difference]: With dead ends: 844 [2024-12-02 07:43:45,879 INFO L226 Difference]: Without dead ends: 808 [2024-12-02 07:43:45,879 INFO L434 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 [2024-12-02 07:43:45,880 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:45,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:45,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-12-02 07:43:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-12-02 07:43:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-12-02 07:43:45,909 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-12-02 07:43:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:45,909 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-12-02 07:43:45,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-12-02 07:43:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-12-02 07:43:45,911 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:45,911 INFO L218 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] [2024-12-02 07:43:45,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:43:45,911 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:45,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-12-02 07:43:45,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:45,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645745310] [2024-12-02 07:43:45,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:45,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:46,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:46,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645745310] [2024-12-02 07:43:46,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645745310] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:46,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:46,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:43:46,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688979537] [2024-12-02 07:43:46,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:46,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:43:46,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:46,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:43:46,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:43:46,058 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:46,203 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2024-12-02 07:43:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:43:46,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-12-02 07:43:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:46,209 INFO L225 Difference]: With dead ends: 1000 [2024-12-02 07:43:46,209 INFO L226 Difference]: Without dead ends: 968 [2024-12-02 07:43:46,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:43:46,211 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:46,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:43:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-12-02 07:43:46,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2024-12-02 07:43:46,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2024-12-02 07:43:46,244 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2024-12-02 07:43:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:46,245 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2024-12-02 07:43:46,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2024-12-02 07:43:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 07:43:46,246 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:46,246 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:43:46,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:43:46,246 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:46,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-12-02 07:43:46,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:46,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808259361] [2024-12-02 07:43:46,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:46,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:46,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:46,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808259361] [2024-12-02 07:43:46,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808259361] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:46,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:46,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:43:46,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467609646] [2024-12-02 07:43:46,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:46,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:43:46,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:46,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:43:46,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:43:46,347 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:46,397 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2024-12-02 07:43:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:43:46,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-12-02 07:43:46,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:46,402 INFO L225 Difference]: With dead ends: 951 [2024-12-02 07:43:46,403 INFO L226 Difference]: Without dead ends: 889 [2024-12-02 07:43:46,403 INFO L434 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 [2024-12-02 07:43:46,404 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 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 [2024-12-02 07:43:46,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-12-02 07:43:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2024-12-02 07:43:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2024-12-02 07:43:46,438 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2024-12-02 07:43:46,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:46,438 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2024-12-02 07:43:46,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2024-12-02 07:43:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 07:43:46,439 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:46,439 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:43:46,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:43:46,440 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:46,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-12-02 07:43:46,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:46,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088291159] [2024-12-02 07:43:46,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:46,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:46,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088291159] [2024-12-02 07:43:46,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088291159] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:46,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:46,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:43:46,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586819972] [2024-12-02 07:43:46,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:46,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:43:46,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:46,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:43:46,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:43:46,635 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:46,719 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2024-12-02 07:43:46,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:43:46,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-12-02 07:43:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:46,723 INFO L225 Difference]: With dead ends: 996 [2024-12-02 07:43:46,723 INFO L226 Difference]: Without dead ends: 887 [2024-12-02 07:43:46,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:43:46,724 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:46,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-12-02 07:43:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2024-12-02 07:43:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2024-12-02 07:43:46,748 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2024-12-02 07:43:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:46,748 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2024-12-02 07:43:46,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2024-12-02 07:43:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 07:43:46,749 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:46,749 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:43:46,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:43:46,749 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:46,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-12-02 07:43:46,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:46,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802191165] [2024-12-02 07:43:46,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:46,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:47,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:47,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802191165] [2024-12-02 07:43:47,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802191165] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:47,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:47,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:43:47,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305986321] [2024-12-02 07:43:47,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:47,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:43:47,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:47,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:43:47,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:43:47,019 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:47,100 INFO L93 Difference]: Finished difference Result 893 states and 1635 transitions. [2024-12-02 07:43:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:43:47,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 07:43:47,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:47,105 INFO L225 Difference]: With dead ends: 893 [2024-12-02 07:43:47,105 INFO L226 Difference]: Without dead ends: 891 [2024-12-02 07:43:47,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:43:47,106 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:47,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-12-02 07:43:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2024-12-02 07:43:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2024-12-02 07:43:47,129 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2024-12-02 07:43:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:47,129 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2024-12-02 07:43:47,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2024-12-02 07:43:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 07:43:47,130 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:47,130 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:43:47,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:43:47,130 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:47,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:47,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-12-02 07:43:47,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:47,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959113604] [2024-12-02 07:43:47,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:47,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:47,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:47,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959113604] [2024-12-02 07:43:47,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959113604] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:47,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:47,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:43:47,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277378637] [2024-12-02 07:43:47,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:47,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:43:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:47,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:43:47,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:43:47,178 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:47,210 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2024-12-02 07:43:47,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:43:47,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-12-02 07:43:47,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:47,214 INFO L225 Difference]: With dead ends: 1105 [2024-12-02 07:43:47,214 INFO L226 Difference]: Without dead ends: 990 [2024-12-02 07:43:47,215 INFO L434 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 [2024-12-02 07:43:47,215 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 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 [2024-12-02 07:43:47,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:47,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-12-02 07:43:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-12-02 07:43:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2024-12-02 07:43:47,241 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2024-12-02 07:43:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:47,241 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2024-12-02 07:43:47,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2024-12-02 07:43:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 07:43:47,242 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:47,242 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:43:47,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:43:47,243 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:47,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:47,243 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-12-02 07:43:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:47,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927472513] [2024-12-02 07:43:47,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927472513] [2024-12-02 07:43:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927472513] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:47,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:47,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:43:47,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659800378] [2024-12-02 07:43:47,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:47,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:43:47,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:47,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:43:47,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:43:47,289 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:47,319 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2024-12-02 07:43:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:43:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-12-02 07:43:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:47,324 INFO L225 Difference]: With dead ends: 1380 [2024-12-02 07:43:47,324 INFO L226 Difference]: Without dead ends: 1168 [2024-12-02 07:43:47,325 INFO L434 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 [2024-12-02 07:43:47,325 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 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 [2024-12-02 07:43:47,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-12-02 07:43:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2024-12-02 07:43:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2024-12-02 07:43:47,358 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2024-12-02 07:43:47,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:47,358 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2024-12-02 07:43:47,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2024-12-02 07:43:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-02 07:43:47,359 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:47,359 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:43:47,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:43:47,359 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:47,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-12-02 07:43:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:47,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622665013] [2024-12-02 07:43:47,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622665013] [2024-12-02 07:43:47,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622665013] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:47,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:47,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:43:47,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15657581] [2024-12-02 07:43:47,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:47,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:43:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:47,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:43:47,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:43:47,405 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:47,440 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2024-12-02 07:43:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:43:47,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-12-02 07:43:47,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:47,446 INFO L225 Difference]: With dead ends: 1589 [2024-12-02 07:43:47,446 INFO L226 Difference]: Without dead ends: 1354 [2024-12-02 07:43:47,447 INFO L434 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 [2024-12-02 07:43:47,447 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 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 [2024-12-02 07:43:47,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:47,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2024-12-02 07:43:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2024-12-02 07:43:47,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2024-12-02 07:43:47,483 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2024-12-02 07:43:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:47,483 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2024-12-02 07:43:47,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2024-12-02 07:43:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 07:43:47,484 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:47,484 INFO L218 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] [2024-12-02 07:43:47,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:43:47,484 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:47,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:47,485 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-12-02 07:43:47,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:47,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296577858] [2024-12-02 07:43:47,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:47,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 07:43:47,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:47,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296577858] [2024-12-02 07:43:47,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296577858] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:47,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:47,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:43:47,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231995937] [2024-12-02 07:43:47,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:47,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:43:47,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:47,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:43:47,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:43:47,598 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:47,702 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2024-12-02 07:43:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:43:47,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 54 [2024-12-02 07:43:47,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:47,711 INFO L225 Difference]: With dead ends: 3208 [2024-12-02 07:43:47,711 INFO L226 Difference]: Without dead ends: 2634 [2024-12-02 07:43:47,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:43:47,713 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 3057 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:47,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2024-12-02 07:43:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2024-12-02 07:43:47,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2024-12-02 07:43:47,770 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2024-12-02 07:43:47,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:47,770 INFO L471 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2024-12-02 07:43:47,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2024-12-02 07:43:47,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 07:43:47,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:47,771 INFO L218 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] [2024-12-02 07:43:47,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:43:47,771 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:47,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-12-02 07:43:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:47,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404175110] [2024-12-02 07:43:47,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:47,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 07:43:47,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:47,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404175110] [2024-12-02 07:43:47,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404175110] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:47,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:47,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:43:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441030671] [2024-12-02 07:43:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:47,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:43:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:47,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:43:47,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:43:47,873 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:47,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:47,974 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2024-12-02 07:43:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:43:47,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 54 [2024-12-02 07:43:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:47,981 INFO L225 Difference]: With dead ends: 3780 [2024-12-02 07:43:47,981 INFO L226 Difference]: Without dead ends: 3206 [2024-12-02 07:43:47,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:43:47,984 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:47,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2024-12-02 07:43:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2024-12-02 07:43:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2024-12-02 07:43:48,033 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2024-12-02 07:43:48,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:48,033 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2024-12-02 07:43:48,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2024-12-02 07:43:48,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 07:43:48,034 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:48,034 INFO L218 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] [2024-12-02 07:43:48,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:43:48,034 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:48,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:48,035 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-12-02 07:43:48,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:48,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663561158] [2024-12-02 07:43:48,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:48,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:48,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:48,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663561158] [2024-12-02 07:43:48,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663561158] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:48,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:48,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:43:48,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062363648] [2024-12-02 07:43:48,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:48,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:43:48,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:48,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:43:48,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:43:48,101 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:48,152 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2024-12-02 07:43:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:43:48,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-12-02 07:43:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:48,160 INFO L225 Difference]: With dead ends: 4260 [2024-12-02 07:43:48,160 INFO L226 Difference]: Without dead ends: 2254 [2024-12-02 07:43:48,162 INFO L434 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 [2024-12-02 07:43:48,163 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 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 [2024-12-02 07:43:48,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2024-12-02 07:43:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2024-12-02 07:43:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2024-12-02 07:43:48,224 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2024-12-02 07:43:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:48,225 INFO L471 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2024-12-02 07:43:48,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2024-12-02 07:43:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 07:43:48,225 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:48,226 INFO L218 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] [2024-12-02 07:43:48,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:43:48,226 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:48,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-12-02 07:43:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814754315] [2024-12-02 07:43:48,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:43:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814754315] [2024-12-02 07:43:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814754315] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:48,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:48,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:43:48,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984933062] [2024-12-02 07:43:48,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:48,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:43:48,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:48,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:43:48,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:43:48,326 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:48,420 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2024-12-02 07:43:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:43:48,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 07:43:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:48,430 INFO L225 Difference]: With dead ends: 3508 [2024-12-02 07:43:48,431 INFO L226 Difference]: Without dead ends: 3090 [2024-12-02 07:43:48,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:43:48,432 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:48,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2024-12-02 07:43:48,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2024-12-02 07:43:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2024-12-02 07:43:48,506 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2024-12-02 07:43:48,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:48,506 INFO L471 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2024-12-02 07:43:48,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2024-12-02 07:43:48,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 07:43:48,508 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:48,508 INFO L218 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] [2024-12-02 07:43:48,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:43:48,508 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:48,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:48,508 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-12-02 07:43:48,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:48,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058008937] [2024-12-02 07:43:48,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:48,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:48,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058008937] [2024-12-02 07:43:48,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058008937] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:48,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:48,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:43:48,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287249822] [2024-12-02 07:43:48,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:48,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:43:48,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:48,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:43:48,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:43:48,597 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:48,639 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2024-12-02 07:43:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:43:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-12-02 07:43:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:48,669 INFO L225 Difference]: With dead ends: 3608 [2024-12-02 07:43:48,670 INFO L226 Difference]: Without dead ends: 1734 [2024-12-02 07:43:48,672 INFO L434 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 [2024-12-02 07:43:48,673 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 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 [2024-12-02 07:43:48,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-12-02 07:43:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2024-12-02 07:43:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2024-12-02 07:43:48,718 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2024-12-02 07:43:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:48,718 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2024-12-02 07:43:48,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2024-12-02 07:43:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:43:48,719 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:48,719 INFO L218 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] [2024-12-02 07:43:48,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:43:48,719 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:48,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:48,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-12-02 07:43:48,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:48,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076639576] [2024-12-02 07:43:48,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:48,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:48,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076639576] [2024-12-02 07:43:48,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076639576] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:48,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:48,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:43:48,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934399962] [2024-12-02 07:43:48,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:48,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:43:48,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:48,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:43:48,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:43:48,799 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:48,828 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2024-12-02 07:43:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:43:48,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-02 07:43:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:48,833 INFO L225 Difference]: With dead ends: 2204 [2024-12-02 07:43:48,833 INFO L226 Difference]: Without dead ends: 1266 [2024-12-02 07:43:48,834 INFO L434 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 [2024-12-02 07:43:48,835 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 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 [2024-12-02 07:43:48,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:43:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-12-02 07:43:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2024-12-02 07:43:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2024-12-02 07:43:48,867 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2024-12-02 07:43:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:48,867 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2024-12-02 07:43:48,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2024-12-02 07:43:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 07:43:48,868 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:48,868 INFO L218 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] [2024-12-02 07:43:48,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:43:48,868 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:48,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:48,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1918634021, now seen corresponding path program 1 times [2024-12-02 07:43:48,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:48,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564497968] [2024-12-02 07:43:48,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:48,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:48,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564497968] [2024-12-02 07:43:48,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564497968] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:43:48,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:43:48,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:43:48,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553680911] [2024-12-02 07:43:48,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:43:48,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:43:48,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:48,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:43:48,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:43:48,991 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 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) [2024-12-02 07:43:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:54,458 INFO L93 Difference]: Finished difference Result 3519 states and 6419 transitions. [2024-12-02 07:43:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:43:54,459 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 [2024-12-02 07:43:54,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:54,467 INFO L225 Difference]: With dead ends: 3519 [2024-12-02 07:43:54,468 INFO L226 Difference]: Without dead ends: 2766 [2024-12-02 07:43:54,469 INFO L434 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 [2024-12-02 07:43:54,469 INFO L435 NwaCegarLoop]: 765 mSDtfsCounter, 2325 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:54,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 783 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-12-02 07:43:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2024-12-02 07:43:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2766. [2024-12-02 07:43:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2764 states have (on average 1.5325615050651231) internal successors, (4236), 2765 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4236 transitions. [2024-12-02 07:43:54,507 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4236 transitions. Word has length 60 [2024-12-02 07:43:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:54,507 INFO L471 AbstractCegarLoop]: Abstraction has 2766 states and 4236 transitions. [2024-12-02 07:43:54,508 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) [2024-12-02 07:43:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4236 transitions. [2024-12-02 07:43:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 07:43:54,508 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:54,509 INFO L218 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] [2024-12-02 07:43:54,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:43:54,509 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:54,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-12-02 07:43:54,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:54,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643895425] [2024-12-02 07:43:54,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:55,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:55,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643895425] [2024-12-02 07:43:55,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643895425] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:43:55,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425781345] [2024-12-02 07:43:55,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:55,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:43:55,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:43:55,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:43:55,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:43:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:55,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 07:43:55,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:43:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:43:56,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:43:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:43:56,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425781345] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:43:56,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:43:56,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-12-02 07:43:56,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139361245] [2024-12-02 07:43:56,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:43:56,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 07:43:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:56,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 07:43:56,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-12-02 07:43:56,198 INFO L87 Difference]: Start difference. First operand 2766 states and 4236 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 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) [2024-12-02 07:43:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:58,144 INFO L93 Difference]: Finished difference Result 5167 states and 7410 transitions. [2024-12-02 07:43:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-12-02 07:43:58,145 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 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 61 [2024-12-02 07:43:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:58,155 INFO L225 Difference]: With dead ends: 5167 [2024-12-02 07:43:58,155 INFO L226 Difference]: Without dead ends: 4697 [2024-12-02 07:43:58,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 07:43:58,158 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 15751 mSDsluCounter, 7677 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15751 SdHoareTripleChecker+Valid, 9176 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:58,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15751 Valid, 9176 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:43:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2024-12-02 07:43:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4663. [2024-12-02 07:43:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 4661 states have (on average 1.4119287706500752) internal successors, (6581), 4662 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:43:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 6581 transitions. [2024-12-02 07:43:58,274 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 6581 transitions. Word has length 61 [2024-12-02 07:43:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:58,274 INFO L471 AbstractCegarLoop]: Abstraction has 4663 states and 6581 transitions. [2024-12-02 07:43:58,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 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) [2024-12-02 07:43:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 6581 transitions. [2024-12-02 07:43:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 07:43:58,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:58,275 INFO L218 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] [2024-12-02 07:43:58,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:43:58,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 07:43:58,476 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:58,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-12-02 07:43:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:58,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626613932] [2024-12-02 07:43:58,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:58,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:43:59,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:59,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626613932] [2024-12-02 07:43:59,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626613932] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:43:59,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664493751] [2024-12-02 07:43:59,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:59,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:43:59,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:43:59,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:43:59,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:44:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:00,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:44:00,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:44:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:00,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:44:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:01,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664493751] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:44:01,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:44:01,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-12-02 07:44:01,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403293962] [2024-12-02 07:44:01,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:44:01,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 07:44:01,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:44:01,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 07:44:01,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:44:01,038 INFO L87 Difference]: Start difference. First operand 4663 states and 6581 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:44:01,569 INFO L93 Difference]: Finished difference Result 8932 states and 11996 transitions. [2024-12-02 07:44:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:44:01,570 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 07:44:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:44:01,583 INFO L225 Difference]: With dead ends: 8932 [2024-12-02 07:44:01,583 INFO L226 Difference]: Without dead ends: 6973 [2024-12-02 07:44:01,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 07:44:01,586 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 11999 mSDsluCounter, 4808 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11999 SdHoareTripleChecker+Valid, 6303 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:44:01,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11999 Valid, 6303 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:44:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2024-12-02 07:44:01,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 6907. [2024-12-02 07:44:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6907 states, 6905 states have (on average 1.3497465604634322) internal successors, (9320), 6906 states have internal predecessors, (9320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 9320 transitions. [2024-12-02 07:44:01,691 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 9320 transitions. Word has length 62 [2024-12-02 07:44:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:44:01,691 INFO L471 AbstractCegarLoop]: Abstraction has 6907 states and 9320 transitions. [2024-12-02 07:44:01,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:01,691 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 9320 transitions. [2024-12-02 07:44:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 07:44:01,692 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:44:01,692 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:44:01,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:44:01,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 07:44:01,893 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:44:01,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:44:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-12-02 07:44:01,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:44:01,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312465090] [2024-12-02 07:44:01,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:44:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:44:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312465090] [2024-12-02 07:44:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312465090] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:44:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155371012] [2024-12-02 07:44:02,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:02,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:44:02,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:44:02,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:44:02,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:44:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:02,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 07:44:02,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:44:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:02,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:44:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:03,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155371012] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:44:03,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:44:03,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-12-02 07:44:03,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339041342] [2024-12-02 07:44:03,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:44:03,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 07:44:03,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:44:03,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 07:44:03,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-12-02 07:44:03,787 INFO L87 Difference]: Start difference. First operand 6907 states and 9320 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:44:06,806 INFO L93 Difference]: Finished difference Result 17154 states and 22116 transitions. [2024-12-02 07:44:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 07:44:06,807 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 07:44:06,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:44:06,823 INFO L225 Difference]: With dead ends: 17154 [2024-12-02 07:44:06,823 INFO L226 Difference]: Without dead ends: 13056 [2024-12-02 07:44:06,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 07:44:06,828 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 15195 mSDsluCounter, 18322 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15195 SdHoareTripleChecker+Valid, 19830 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:44:06,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15195 Valid, 19830 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:44:06,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13056 states. [2024-12-02 07:44:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13056 to 9106. [2024-12-02 07:44:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9106 states, 9104 states have (on average 1.3146968365553602) internal successors, (11969), 9105 states have internal predecessors, (11969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:07,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9106 states to 9106 states and 11969 transitions. [2024-12-02 07:44:07,075 INFO L78 Accepts]: Start accepts. Automaton has 9106 states and 11969 transitions. Word has length 62 [2024-12-02 07:44:07,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:44:07,076 INFO L471 AbstractCegarLoop]: Abstraction has 9106 states and 11969 transitions. [2024-12-02 07:44:07,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:07,076 INFO L276 IsEmpty]: Start isEmpty. Operand 9106 states and 11969 transitions. [2024-12-02 07:44:07,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 07:44:07,076 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:44:07,076 INFO L218 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] [2024-12-02 07:44:07,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:44:07,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:44:07,277 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:44:07,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:44:07,278 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-12-02 07:44:07,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:44:07,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052892849] [2024-12-02 07:44:07,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:44:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:07,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:44:07,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052892849] [2024-12-02 07:44:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052892849] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:44:07,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966867275] [2024-12-02 07:44:07,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:07,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:44:07,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:44:07,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:44:07,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:44:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:07,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:44:07,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:44:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:08,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:44:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:09,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966867275] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:44:09,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:44:09,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-12-02 07:44:09,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308183275] [2024-12-02 07:44:09,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:44:09,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 07:44:09,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:44:09,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 07:44:09,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:44:09,708 INFO L87 Difference]: Start difference. First operand 9106 states and 11969 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:44:11,244 INFO L93 Difference]: Finished difference Result 17832 states and 22811 transitions. [2024-12-02 07:44:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 07:44:11,245 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 07:44:11,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:44:11,268 INFO L225 Difference]: With dead ends: 17832 [2024-12-02 07:44:11,268 INFO L226 Difference]: Without dead ends: 12188 [2024-12-02 07:44:11,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 07:44:11,275 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 18641 mSDsluCounter, 6519 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18641 SdHoareTripleChecker+Valid, 8033 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:44:11,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18641 Valid, 8033 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:44:11,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12188 states. [2024-12-02 07:44:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12188 to 11582. [2024-12-02 07:44:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11582 states, 11580 states have (on average 1.2876511226252159) internal successors, (14911), 11581 states have internal predecessors, (14911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11582 states to 11582 states and 14911 transitions. [2024-12-02 07:44:11,782 INFO L78 Accepts]: Start accepts. Automaton has 11582 states and 14911 transitions. Word has length 63 [2024-12-02 07:44:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:44:11,782 INFO L471 AbstractCegarLoop]: Abstraction has 11582 states and 14911 transitions. [2024-12-02 07:44:11,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 11582 states and 14911 transitions. [2024-12-02 07:44:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 07:44:11,783 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:44:11,783 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:44:11,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 07:44:11,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:44:11,984 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:44:11,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:44:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-12-02 07:44:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:44:11,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609034877] [2024-12-02 07:44:11,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:44:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:13,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:44:13,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609034877] [2024-12-02 07:44:13,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609034877] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:44:13,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161576393] [2024-12-02 07:44:13,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:13,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:44:13,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:44:13,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:44:13,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:44:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:13,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 07:44:13,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:44:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:16,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:44:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:17,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161576393] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:44:17,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:44:17,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-12-02 07:44:17,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52550897] [2024-12-02 07:44:17,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:44:17,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 07:44:17,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:44:17,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 07:44:17,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 07:44:17,832 INFO L87 Difference]: Start difference. First operand 11582 states and 14911 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:44:40,327 INFO L93 Difference]: Finished difference Result 21889 states and 27494 transitions. [2024-12-02 07:44:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-12-02 07:44:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 07:44:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:44:40,358 INFO L225 Difference]: With dead ends: 21889 [2024-12-02 07:44:40,358 INFO L226 Difference]: Without dead ends: 18145 [2024-12-02 07:44:40,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6022 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=4194, Invalid=16398, Unknown=0, NotChecked=0, Total=20592 [2024-12-02 07:44:40,369 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 26255 mSDsluCounter, 26954 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26255 SdHoareTripleChecker+Valid, 28496 SdHoareTripleChecker+Invalid, 2676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:44:40,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26255 Valid, 28496 Invalid, 2676 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 07:44:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18145 states. [2024-12-02 07:44:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18145 to 14698. [2024-12-02 07:44:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14698 states, 14696 states have (on average 1.2773543821448012) internal successors, (18772), 14697 states have internal predecessors, (18772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14698 states to 14698 states and 18772 transitions. [2024-12-02 07:44:41,274 INFO L78 Accepts]: Start accepts. Automaton has 14698 states and 18772 transitions. Word has length 63 [2024-12-02 07:44:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:44:41,274 INFO L471 AbstractCegarLoop]: Abstraction has 14698 states and 18772 transitions. [2024-12-02 07:44:41,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 14698 states and 18772 transitions. [2024-12-02 07:44:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 07:44:41,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:44:41,275 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:44:41,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:44:41,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 07:44:41,476 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:44:41,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:44:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-12-02 07:44:41,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:44:41,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374801515] [2024-12-02 07:44:41,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:41,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:44:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:44:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374801515] [2024-12-02 07:44:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374801515] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:44:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504115368] [2024-12-02 07:44:42,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:42,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:44:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:44:42,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:44:42,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:44:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:42,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 07:44:42,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:44:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:44,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:44:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:45,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504115368] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:44:45,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:44:45,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-12-02 07:44:45,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358371798] [2024-12-02 07:44:45,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:44:45,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 07:44:45,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:44:45,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 07:44:45,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 07:44:45,044 INFO L87 Difference]: Start difference. First operand 14698 states and 18772 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:44:48,541 INFO L93 Difference]: Finished difference Result 19558 states and 24698 transitions. [2024-12-02 07:44:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 07:44:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 07:44:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:44:48,558 INFO L225 Difference]: With dead ends: 19558 [2024-12-02 07:44:48,558 INFO L226 Difference]: Without dead ends: 13811 [2024-12-02 07:44:48,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 07:44:48,565 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 12754 mSDsluCounter, 15702 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12754 SdHoareTripleChecker+Valid, 17219 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:44:48,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12754 Valid, 17219 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:44:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13811 states. [2024-12-02 07:44:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13811 to 11693. [2024-12-02 07:44:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11693 states, 11691 states have (on average 1.2872294927722179) internal successors, (15049), 11692 states have internal predecessors, (15049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:49,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11693 states to 11693 states and 15049 transitions. [2024-12-02 07:44:49,005 INFO L78 Accepts]: Start accepts. Automaton has 11693 states and 15049 transitions. Word has length 64 [2024-12-02 07:44:49,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:44:49,005 INFO L471 AbstractCegarLoop]: Abstraction has 11693 states and 15049 transitions. [2024-12-02 07:44:49,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:44:49,006 INFO L276 IsEmpty]: Start isEmpty. Operand 11693 states and 15049 transitions. [2024-12-02 07:44:49,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 07:44:49,006 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:44:49,006 INFO L218 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] [2024-12-02 07:44:49,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:44:49,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 07:44:49,207 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:44:49,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:44:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-12-02 07:44:49,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:44:49,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088441108] [2024-12-02 07:44:49,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:49,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:44:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:50,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:44:50,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088441108] [2024-12-02 07:44:50,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088441108] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:44:50,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262013664] [2024-12-02 07:44:50,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:44:50,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:44:50,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:44:50,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:44:50,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:44:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:44:50,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 07:44:50,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:44:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:51,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:44:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:44:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262013664] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:44:52,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:44:52,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-12-02 07:44:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110826838] [2024-12-02 07:44:52,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:44:52,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 07:44:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:44:52,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 07:44:52,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 07:44:52,757 INFO L87 Difference]: Start difference. First operand 11693 states and 15049 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:01,826 INFO L93 Difference]: Finished difference Result 18433 states and 23256 transitions. [2024-12-02 07:45:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-12-02 07:45:01,826 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 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 [2024-12-02 07:45:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:01,837 INFO L225 Difference]: With dead ends: 18433 [2024-12-02 07:45:01,837 INFO L226 Difference]: Without dead ends: 13654 [2024-12-02 07:45:01,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2078, Invalid=7822, Unknown=0, NotChecked=0, Total=9900 [2024-12-02 07:45:01,841 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 19758 mSDsluCounter, 31592 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19758 SdHoareTripleChecker+Valid, 33150 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:45:01,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19758 Valid, 33150 Invalid, 2505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 07:45:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13654 states. [2024-12-02 07:45:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13654 to 9542. [2024-12-02 07:45:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9540 states have (on average 1.3024109014675052) internal successors, (12425), 9541 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 12425 transitions. [2024-12-02 07:45:02,244 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 12425 transitions. Word has length 65 [2024-12-02 07:45:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:02,244 INFO L471 AbstractCegarLoop]: Abstraction has 9542 states and 12425 transitions. [2024-12-02 07:45:02,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:02,244 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 12425 transitions. [2024-12-02 07:45:02,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 07:45:02,247 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:02,247 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:02,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 07:45:02,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 07:45:02,447 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:02,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:02,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1065912349, now seen corresponding path program 1 times [2024-12-02 07:45:02,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:02,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641934501] [2024-12-02 07:45:02,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:03,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:03,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641934501] [2024-12-02 07:45:03,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641934501] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:03,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68713299] [2024-12-02 07:45:03,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:03,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:03,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:03,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:03,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:45:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:03,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 07:45:03,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:03,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:45:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:05,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68713299] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:45:05,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:45:05,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-12-02 07:45:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767529486] [2024-12-02 07:45:05,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:45:05,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 07:45:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:05,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 07:45:05,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:45:05,507 INFO L87 Difference]: Start difference. First operand 9542 states and 12425 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:06,459 INFO L93 Difference]: Finished difference Result 14458 states and 18481 transitions. [2024-12-02 07:45:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:45:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 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 103 [2024-12-02 07:45:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:06,467 INFO L225 Difference]: With dead ends: 14458 [2024-12-02 07:45:06,467 INFO L226 Difference]: Without dead ends: 9862 [2024-12-02 07:45:06,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 07:45:06,475 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 14956 mSDsluCounter, 9299 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14956 SdHoareTripleChecker+Valid, 10814 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:45:06,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14956 Valid, 10814 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:45:06,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9862 states. [2024-12-02 07:45:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9862 to 9542. [2024-12-02 07:45:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9540 states have (on average 1.2938155136268343) internal successors, (12343), 9541 states have internal predecessors, (12343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 12343 transitions. [2024-12-02 07:45:06,982 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 12343 transitions. Word has length 103 [2024-12-02 07:45:06,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:06,983 INFO L471 AbstractCegarLoop]: Abstraction has 9542 states and 12343 transitions. [2024-12-02 07:45:06,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:06,983 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 12343 transitions. [2024-12-02 07:45:06,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 07:45:06,984 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:06,984 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:06,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:45:07,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 07:45:07,185 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:07,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1754049935, now seen corresponding path program 1 times [2024-12-02 07:45:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:07,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412372784] [2024-12-02 07:45:07,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:07,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:07,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412372784] [2024-12-02 07:45:07,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412372784] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300057390] [2024-12-02 07:45:07,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:07,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:07,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:07,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:45:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:07,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:45:07,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:08,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:45:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:10,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300057390] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:45:10,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:45:10,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-12-02 07:45:10,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677844559] [2024-12-02 07:45:10,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:45:10,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 07:45:10,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:10,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 07:45:10,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:45:10,149 INFO L87 Difference]: Start difference. First operand 9542 states and 12343 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:11,166 INFO L93 Difference]: Finished difference Result 13807 states and 17533 transitions. [2024-12-02 07:45:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 07:45:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 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 103 [2024-12-02 07:45:11,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:11,174 INFO L225 Difference]: With dead ends: 13807 [2024-12-02 07:45:11,174 INFO L226 Difference]: Without dead ends: 9628 [2024-12-02 07:45:11,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 07:45:11,177 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 14811 mSDsluCounter, 10691 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14811 SdHoareTripleChecker+Valid, 12206 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:45:11,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14811 Valid, 12206 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:45:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9628 states. [2024-12-02 07:45:11,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 9542. [2024-12-02 07:45:11,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9540 states have (on average 1.2880503144654087) internal successors, (12288), 9541 states have internal predecessors, (12288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 12288 transitions. [2024-12-02 07:45:11,571 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 12288 transitions. Word has length 103 [2024-12-02 07:45:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:11,571 INFO L471 AbstractCegarLoop]: Abstraction has 9542 states and 12288 transitions. [2024-12-02 07:45:11,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 12288 transitions. [2024-12-02 07:45:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 07:45:11,573 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:11,573 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:11,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 07:45:11,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:11,774 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:11,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2024-12-02 07:45:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140116665] [2024-12-02 07:45:11,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 07:45:12,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:12,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140116665] [2024-12-02 07:45:12,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140116665] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:12,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051079966] [2024-12-02 07:45:12,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:12,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:12,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:12,858 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:12,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 07:45:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:12,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 07:45:12,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:14,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:45:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:17,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051079966] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:45:17,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:45:17,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-12-02 07:45:17,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479491045] [2024-12-02 07:45:17,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:45:17,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 07:45:17,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:17,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 07:45:17,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 07:45:17,702 INFO L87 Difference]: Start difference. First operand 9542 states and 12288 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 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) [2024-12-02 07:45:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:38,853 INFO L93 Difference]: Finished difference Result 15640 states and 19551 transitions. [2024-12-02 07:45:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-12-02 07:45:38,854 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 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 104 [2024-12-02 07:45:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:38,861 INFO L225 Difference]: With dead ends: 15640 [2024-12-02 07:45:38,861 INFO L226 Difference]: Without dead ends: 11724 [2024-12-02 07:45:38,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9886 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=5256, Invalid=28416, Unknown=0, NotChecked=0, Total=33672 [2024-12-02 07:45:38,865 INFO L435 NwaCegarLoop]: 1686 mSDtfsCounter, 29097 mSDsluCounter, 32847 mSDsCounter, 0 mSdLazyCounter, 4326 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29097 SdHoareTripleChecker+Valid, 34533 SdHoareTripleChecker+Invalid, 4570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 4326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:45:38,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29097 Valid, 34533 Invalid, 4570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [244 Valid, 4326 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 07:45:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11724 states. [2024-12-02 07:45:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11724 to 9186. [2024-12-02 07:45:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9184 states have (on average 1.286476480836237) internal successors, (11815), 9185 states have internal predecessors, (11815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:45:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 11815 transitions. [2024-12-02 07:45:39,301 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 11815 transitions. Word has length 104 [2024-12-02 07:45:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:39,302 INFO L471 AbstractCegarLoop]: Abstraction has 9186 states and 11815 transitions. [2024-12-02 07:45:39,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 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) [2024-12-02 07:45:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 11815 transitions. [2024-12-02 07:45:39,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 07:45:39,303 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:39,303 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:39,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 07:45:39,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:39,503 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:39,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:39,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2024-12-02 07:45:39,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:39,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744335280] [2024-12-02 07:45:39,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:39,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:40,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:40,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744335280] [2024-12-02 07:45:40,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744335280] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:40,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934777571] [2024-12-02 07:45:40,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:40,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:40,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:40,484 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:40,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 07:45:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:40,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 07:45:40,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:42,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:45:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:45:45,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934777571] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:45:45,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:45:45,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 54 [2024-12-02 07:45:45,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565731098] [2024-12-02 07:45:45,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:45:45,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 07:45:45,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:45,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 07:45:45,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2630, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 07:45:45,116 INFO L87 Difference]: Start difference. First operand 9186 states and 11815 transitions. Second operand has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:46:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:22,245 INFO L93 Difference]: Finished difference Result 18082 states and 22483 transitions. [2024-12-02 07:46:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2024-12-02 07:46:22,246 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 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 105 [2024-12-02 07:46:22,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:22,255 INFO L225 Difference]: With dead ends: 18082 [2024-12-02 07:46:22,255 INFO L226 Difference]: Without dead ends: 14018 [2024-12-02 07:46:22,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=8347, Invalid=42053, Unknown=0, NotChecked=0, Total=50400 [2024-12-02 07:46:22,260 INFO L435 NwaCegarLoop]: 1611 mSDtfsCounter, 23097 mSDsluCounter, 40400 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23097 SdHoareTripleChecker+Valid, 42011 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:22,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23097 Valid, 42011 Invalid, 3291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [168 Valid, 3123 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 07:46:22,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14018 states. [2024-12-02 07:46:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14018 to 13734. [2024-12-02 07:46:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13734 states, 13732 states have (on average 1.255388872706088) internal successors, (17239), 13733 states have internal predecessors, (17239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:46:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13734 states to 13734 states and 17239 transitions. [2024-12-02 07:46:23,257 INFO L78 Accepts]: Start accepts. Automaton has 13734 states and 17239 transitions. Word has length 105 [2024-12-02 07:46:23,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:23,257 INFO L471 AbstractCegarLoop]: Abstraction has 13734 states and 17239 transitions. [2024-12-02 07:46:23,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:46:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 13734 states and 17239 transitions. [2024-12-02 07:46:23,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 07:46:23,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:23,259 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:46:23,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 07:46:23,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:46:23,459 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:23,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1969661904, now seen corresponding path program 1 times [2024-12-02 07:46:23,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:23,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348533745] [2024-12-02 07:46:23,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:23,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:46:24,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:24,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348533745] [2024-12-02 07:46:24,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348533745] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:46:24,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959342367] [2024-12-02 07:46:24,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:24,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:46:24,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:46:24,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:46:24,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 07:46:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:24,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-12-02 07:46:24,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:46:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:46:27,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:46:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:46:36,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959342367] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:46:36,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:46:36,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 76 [2024-12-02 07:46:36,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939674043] [2024-12-02 07:46:36,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:46:36,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-12-02 07:46:36,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:36,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-12-02 07:46:36,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=5141, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 07:46:36,207 INFO L87 Difference]: Start difference. First operand 13734 states and 17239 transitions. Second operand has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:31,012 INFO L93 Difference]: Finished difference Result 28607 states and 35079 transitions. [2024-12-02 07:47:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-12-02 07:47:31,012 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-12-02 07:47:31,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:31,024 INFO L225 Difference]: With dead ends: 28607 [2024-12-02 07:47:31,024 INFO L226 Difference]: Without dead ends: 19441 [2024-12-02 07:47:31,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18854 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=9117, Invalid=45405, Unknown=0, NotChecked=0, Total=54522 [2024-12-02 07:47:31,031 INFO L435 NwaCegarLoop]: 1646 mSDtfsCounter, 28072 mSDsluCounter, 35222 mSDsCounter, 0 mSdLazyCounter, 3849 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28072 SdHoareTripleChecker+Valid, 36868 SdHoareTripleChecker+Invalid, 4078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 3849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:31,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28072 Valid, 36868 Invalid, 4078 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [229 Valid, 3849 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 07:47:31,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19441 states. [2024-12-02 07:47:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19441 to 16095. [2024-12-02 07:47:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16095 states, 16093 states have (on average 1.2458833032995713) internal successors, (20050), 16094 states have internal predecessors, (20050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16095 states to 16095 states and 20050 transitions. [2024-12-02 07:47:32,269 INFO L78 Accepts]: Start accepts. Automaton has 16095 states and 20050 transitions. Word has length 106 [2024-12-02 07:47:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:32,269 INFO L471 AbstractCegarLoop]: Abstraction has 16095 states and 20050 transitions. [2024-12-02 07:47:32,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.6710526315789473) internal successors, (279), 76 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 16095 states and 20050 transitions. [2024-12-02 07:47:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 07:47:32,270 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:32,270 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:47:32,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 07:47:32,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 07:47:32,471 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:32,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:32,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1775421751, now seen corresponding path program 1 times [2024-12-02 07:47:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:32,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46540641] [2024-12-02 07:47:32,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:32,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:47:32,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:32,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46540641] [2024-12-02 07:47:32,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46540641] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:47:32,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473221446] [2024-12-02 07:47:32,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:32,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:47:32,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:47:32,861 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:47:32,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 07:47:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:32,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 07:47:32,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:47:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:47:34,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:47:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:47:36,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473221446] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:47:36,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:47:36,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 44 [2024-12-02 07:47:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771287804] [2024-12-02 07:47:36,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:47:36,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 07:47:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:36,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 07:47:36,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1688, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 07:47:36,864 INFO L87 Difference]: Start difference. First operand 16095 states and 20050 transitions. Second operand has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:41,733 INFO L93 Difference]: Finished difference Result 37204 states and 45401 transitions. [2024-12-02 07:47:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 07:47:41,734 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 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 107 [2024-12-02 07:47:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:41,755 INFO L225 Difference]: With dead ends: 37204 [2024-12-02 07:47:41,755 INFO L226 Difference]: Without dead ends: 26011 [2024-12-02 07:47:41,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1232, Invalid=5088, Unknown=0, NotChecked=0, Total=6320 [2024-12-02 07:47:41,762 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 21224 mSDsluCounter, 17749 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21224 SdHoareTripleChecker+Valid, 19322 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:41,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21224 Valid, 19322 Invalid, 1318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:47:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26011 states. [2024-12-02 07:47:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26011 to 23679. [2024-12-02 07:47:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23679 states, 23677 states have (on average 1.2265912066562488) internal successors, (29042), 23678 states have internal predecessors, (29042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23679 states to 23679 states and 29042 transitions. [2024-12-02 07:47:43,835 INFO L78 Accepts]: Start accepts. Automaton has 23679 states and 29042 transitions. Word has length 107 [2024-12-02 07:47:43,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:43,835 INFO L471 AbstractCegarLoop]: Abstraction has 23679 states and 29042 transitions. [2024-12-02 07:47:43,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:43,836 INFO L276 IsEmpty]: Start isEmpty. Operand 23679 states and 29042 transitions. [2024-12-02 07:47:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 07:47:43,836 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:43,836 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:47:43,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 07:47:44,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 07:47:44,037 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:44,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:44,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1570064813, now seen corresponding path program 1 times [2024-12-02 07:47:44,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:44,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503201499] [2024-12-02 07:47:44,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:44,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:47:44,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:44,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503201499] [2024-12-02 07:47:44,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503201499] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:47:44,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872466348] [2024-12-02 07:47:44,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:44,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:47:44,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:47:44,477 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:47:44,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 07:47:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:44,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 07:47:44,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:47:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:47:46,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:47:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:47:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872466348] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:47:47,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:47:47,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 16] total 43 [2024-12-02 07:47:47,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258175960] [2024-12-02 07:47:47,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:47:47,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 07:47:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:47,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 07:47:47,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1592, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 07:47:47,803 INFO L87 Difference]: Start difference. First operand 23679 states and 29042 transitions. Second operand has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:52,654 INFO L93 Difference]: Finished difference Result 44285 states and 53841 transitions. [2024-12-02 07:47:52,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 07:47:52,654 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 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 107 [2024-12-02 07:47:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:52,676 INFO L225 Difference]: With dead ends: 44285 [2024-12-02 07:47:52,676 INFO L226 Difference]: Without dead ends: 27265 [2024-12-02 07:47:52,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1021, Invalid=4235, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 07:47:52,687 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 22645 mSDsluCounter, 19299 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22645 SdHoareTripleChecker+Valid, 20874 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:52,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22645 Valid, 20874 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:47:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27265 states. [2024-12-02 07:47:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27265 to 27096. [2024-12-02 07:47:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27096 states, 27094 states have (on average 1.2195319997047316) internal successors, (33042), 27095 states have internal predecessors, (33042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27096 states to 27096 states and 33042 transitions. [2024-12-02 07:47:55,032 INFO L78 Accepts]: Start accepts. Automaton has 27096 states and 33042 transitions. Word has length 107 [2024-12-02 07:47:55,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:55,032 INFO L471 AbstractCegarLoop]: Abstraction has 27096 states and 33042 transitions. [2024-12-02 07:47:55,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 43 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:55,032 INFO L276 IsEmpty]: Start isEmpty. Operand 27096 states and 33042 transitions. [2024-12-02 07:47:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 07:47:55,033 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:55,033 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-12-02 07:47:55,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 07:47:55,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:47:55,233 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:55,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:55,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1360080118, now seen corresponding path program 1 times [2024-12-02 07:47:55,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:55,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177622375] [2024-12-02 07:47:55,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:55,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:47:56,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:56,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177622375] [2024-12-02 07:47:56,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177622375] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:47:56,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482681982] [2024-12-02 07:47:56,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:56,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:47:56,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:47:56,797 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:47:56,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 07:47:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:56,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 07:47:56,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:48:00,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:48:03,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482681982] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:48:03,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:48:03,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 19] total 61 [2024-12-02 07:48:03,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558469299] [2024-12-02 07:48:03,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:48:03,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 07:48:03,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:03,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 07:48:03,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=3417, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 07:48:03,543 INFO L87 Difference]: Start difference. First operand 27096 states and 33042 transitions. Second operand has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:48:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:30,492 INFO L93 Difference]: Finished difference Result 49311 states and 59658 transitions. [2024-12-02 07:48:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-12-02 07:48:30,492 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 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 108 [2024-12-02 07:48:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:30,519 INFO L225 Difference]: With dead ends: 49311 [2024-12-02 07:48:30,519 INFO L226 Difference]: Without dead ends: 40791 [2024-12-02 07:48:30,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9504 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=5157, Invalid=29253, Unknown=0, NotChecked=0, Total=34410 [2024-12-02 07:48:30,529 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 34986 mSDsluCounter, 35762 mSDsCounter, 0 mSdLazyCounter, 3793 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34986 SdHoareTripleChecker+Valid, 37414 SdHoareTripleChecker+Invalid, 3954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 3793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:30,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34986 Valid, 37414 Invalid, 3954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [161 Valid, 3793 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 07:48:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40791 states. [2024-12-02 07:48:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40791 to 26105. [2024-12-02 07:48:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26105 states, 26103 states have (on average 1.2197065471401756) internal successors, (31838), 26104 states have internal predecessors, (31838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:48:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26105 states to 26105 states and 31838 transitions. [2024-12-02 07:48:33,482 INFO L78 Accepts]: Start accepts. Automaton has 26105 states and 31838 transitions. Word has length 108 [2024-12-02 07:48:33,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:33,483 INFO L471 AbstractCegarLoop]: Abstraction has 26105 states and 31838 transitions. [2024-12-02 07:48:33,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.475409836065574) internal successors, (273), 61 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:48:33,483 INFO L276 IsEmpty]: Start isEmpty. Operand 26105 states and 31838 transitions. [2024-12-02 07:48:33,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 07:48:33,484 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:33,484 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:33,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 07:48:33,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:33,685 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:33,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1868806128, now seen corresponding path program 1 times [2024-12-02 07:48:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702158961] [2024-12-02 07:48:33,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:48:34,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:34,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702158961] [2024-12-02 07:48:34,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702158961] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:48:34,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066910028] [2024-12-02 07:48:34,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:34,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:34,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:34,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:34,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 07:48:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:34,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 07:48:34,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:48:35,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:48:38,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066910028] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:48:38,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:48:38,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 43 [2024-12-02 07:48:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66287089] [2024-12-02 07:48:38,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:48:38,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 07:48:38,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:38,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 07:48:38,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 07:48:38,699 INFO L87 Difference]: Start difference. First operand 26105 states and 31838 transitions. Second operand has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:48:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:56,220 INFO L93 Difference]: Finished difference Result 53280 states and 64269 transitions. [2024-12-02 07:48:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-12-02 07:48:56,220 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 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 108 [2024-12-02 07:48:56,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:56,256 INFO L225 Difference]: With dead ends: 53280 [2024-12-02 07:48:56,256 INFO L226 Difference]: Without dead ends: 35154 [2024-12-02 07:48:56,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6714 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=3549, Invalid=19707, Unknown=0, NotChecked=0, Total=23256 [2024-12-02 07:48:56,269 INFO L435 NwaCegarLoop]: 1625 mSDtfsCounter, 20897 mSDsluCounter, 27591 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20897 SdHoareTripleChecker+Valid, 29216 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:56,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20897 Valid, 29216 Invalid, 2799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 07:48:56,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35154 states. [2024-12-02 07:48:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35154 to 32785. [2024-12-02 07:48:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32785 states, 32783 states have (on average 1.2084922063264496) internal successors, (39618), 32784 states have internal predecessors, (39618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:48:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32785 states to 32785 states and 39618 transitions. [2024-12-02 07:48:59,673 INFO L78 Accepts]: Start accepts. Automaton has 32785 states and 39618 transitions. Word has length 108 [2024-12-02 07:48:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:59,674 INFO L471 AbstractCegarLoop]: Abstraction has 32785 states and 39618 transitions. [2024-12-02 07:48:59,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.976744186046512) internal successors, (300), 43 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:48:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 32785 states and 39618 transitions. [2024-12-02 07:48:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 07:48:59,675 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:59,675 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-12-02 07:48:59,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 07:48:59,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:59,876 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:59,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1776708174, now seen corresponding path program 1 times [2024-12-02 07:48:59,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:59,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698631065] [2024-12-02 07:48:59,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:59,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:49:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:49:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698631065] [2024-12-02 07:49:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698631065] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:49:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540874954] [2024-12-02 07:49:01,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:49:01,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:49:01,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:49:01,430 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:49:01,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 07:49:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:01,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 07:49:01,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:49:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 42 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:49:05,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:49:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:49:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540874954] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:49:13,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:49:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 27] total 75 [2024-12-02 07:49:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8118118] [2024-12-02 07:49:13,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:49:13,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-12-02 07:49:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:49:13,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-12-02 07:49:13,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=5044, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 07:49:13,919 INFO L87 Difference]: Start difference. First operand 32785 states and 39618 transitions. Second operand has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:50:17,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:50:17,774 INFO L93 Difference]: Finished difference Result 63560 states and 76053 transitions. [2024-12-02 07:50:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2024-12-02 07:50:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 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 108 [2024-12-02 07:50:17,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:50:17,902 INFO L225 Difference]: With dead ends: 63560 [2024-12-02 07:50:17,902 INFO L226 Difference]: Without dead ends: 49680 [2024-12-02 07:50:17,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 164 SyntacticMatches, 4 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46582 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=18100, Invalid=97840, Unknown=0, NotChecked=0, Total=115940 [2024-12-02 07:50:17,912 INFO L435 NwaCegarLoop]: 1692 mSDtfsCounter, 30213 mSDsluCounter, 45579 mSDsCounter, 0 mSdLazyCounter, 6445 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30213 SdHoareTripleChecker+Valid, 47271 SdHoareTripleChecker+Invalid, 6672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 6445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:50:17,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30213 Valid, 47271 Invalid, 6672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [227 Valid, 6445 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 07:50:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49680 states. [2024-12-02 07:50:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49680 to 34443. [2024-12-02 07:50:21,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34443 states, 34441 states have (on average 1.2079207920792079) internal successors, (41602), 34442 states have internal predecessors, (41602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:50:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34443 states to 34443 states and 41602 transitions. [2024-12-02 07:50:21,829 INFO L78 Accepts]: Start accepts. Automaton has 34443 states and 41602 transitions. Word has length 108 [2024-12-02 07:50:21,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:50:21,829 INFO L471 AbstractCegarLoop]: Abstraction has 34443 states and 41602 transitions. [2024-12-02 07:50:21,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.5733333333333333) internal successors, (268), 75 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:50:21,829 INFO L276 IsEmpty]: Start isEmpty. Operand 34443 states and 41602 transitions. [2024-12-02 07:50:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 07:50:21,830 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:50:21,830 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:50:21,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-02 07:50:22,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:50:22,031 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:50:22,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:50:22,031 INFO L85 PathProgramCache]: Analyzing trace with hash -679259444, now seen corresponding path program 1 times [2024-12-02 07:50:22,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:50:22,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240173649] [2024-12-02 07:50:22,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:50:22,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:50:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:50:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:50:22,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:50:22,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240173649] [2024-12-02 07:50:22,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240173649] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:50:22,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:50:22,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:50:22,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555045093] [2024-12-02 07:50:22,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:50:22,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:50:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:50:22,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:50:22,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:50:22,129 INFO L87 Difference]: Start difference. First operand 34443 states and 41602 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:50:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:50:29,607 INFO L93 Difference]: Finished difference Result 37486 states and 47250 transitions. [2024-12-02 07:50:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:50:29,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-12-02 07:50:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:50:29,630 INFO L225 Difference]: With dead ends: 37486 [2024-12-02 07:50:29,630 INFO L226 Difference]: Without dead ends: 35945 [2024-12-02 07:50:29,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:50:29,635 INFO L435 NwaCegarLoop]: 764 mSDtfsCounter, 757 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 3804 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:50:29,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 852 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3804 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 07:50:29,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35945 states. [2024-12-02 07:50:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35945 to 35945. [2024-12-02 07:50:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35945 states, 35943 states have (on average 1.2013465765239406) internal successors, (43180), 35944 states have internal predecessors, (43180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:50:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35945 states to 35945 states and 43180 transitions. [2024-12-02 07:50:33,481 INFO L78 Accepts]: Start accepts. Automaton has 35945 states and 43180 transitions. Word has length 131 [2024-12-02 07:50:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:50:33,481 INFO L471 AbstractCegarLoop]: Abstraction has 35945 states and 43180 transitions. [2024-12-02 07:50:33,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:50:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 35945 states and 43180 transitions. [2024-12-02 07:50:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:50:33,483 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:50:33,483 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:50:33,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 07:50:33,483 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:50:33,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:50:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash 289672907, now seen corresponding path program 1 times [2024-12-02 07:50:33,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:50:33,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737259499] [2024-12-02 07:50:33,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:50:33,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:50:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:50:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 67 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:50:34,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:50:34,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737259499] [2024-12-02 07:50:34,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737259499] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:50:34,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440370860] [2024-12-02 07:50:34,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:50:34,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:50:34,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:50:34,349 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:50:34,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 07:50:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:50:34,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 07:50:34,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:50:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 80 proven. 147 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 07:50:35,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:50:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 190 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 07:50:37,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440370860] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:50:37,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:50:37,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 43 [2024-12-02 07:50:37,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066758950] [2024-12-02 07:50:37,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:50:37,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 07:50:37,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:50:37,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 07:50:37,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 07:50:37,834 INFO L87 Difference]: Start difference. First operand 35945 states and 43180 transitions. Second operand has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:50:50,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:50:50,773 INFO L93 Difference]: Finished difference Result 49346 states and 59266 transitions. [2024-12-02 07:50:50,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-12-02 07:50:50,774 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 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 146 [2024-12-02 07:50:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:50:50,799 INFO L225 Difference]: With dead ends: 49346 [2024-12-02 07:50:50,799 INFO L226 Difference]: Without dead ends: 36039 [2024-12-02 07:50:50,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4283 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3290, Invalid=13480, Unknown=0, NotChecked=0, Total=16770 [2024-12-02 07:50:50,807 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 34291 mSDsluCounter, 17647 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34291 SdHoareTripleChecker+Valid, 19190 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:50:50,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34291 Valid, 19190 Invalid, 2111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 07:50:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36039 states. [2024-12-02 07:50:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36039 to 24300. [2024-12-02 07:50:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24300 states, 24298 states have (on average 1.2048316733887563) internal successors, (29275), 24299 states have internal predecessors, (29275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:50:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24300 states to 24300 states and 29275 transitions. [2024-12-02 07:50:53,804 INFO L78 Accepts]: Start accepts. Automaton has 24300 states and 29275 transitions. Word has length 146 [2024-12-02 07:50:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:50:53,804 INFO L471 AbstractCegarLoop]: Abstraction has 24300 states and 29275 transitions. [2024-12-02 07:50:53,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.909090909090908) internal successors, (392), 43 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:50:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 24300 states and 29275 transitions. [2024-12-02 07:50:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:50:53,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:50:53,806 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:50:53,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 07:50:54,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 07:50:54,007 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:50:54,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:50:54,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1444097760, now seen corresponding path program 1 times [2024-12-02 07:50:54,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:50:54,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518789132] [2024-12-02 07:50:54,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:50:54,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:50:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:50:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:50:55,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:50:55,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518789132] [2024-12-02 07:50:55,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518789132] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:50:55,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196948052] [2024-12-02 07:50:55,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:50:55,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:50:55,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:50:55,295 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:50:55,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 07:50:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:50:55,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 07:50:55,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:50:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 57 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:50:58,261 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:51:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 53 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:51:03,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196948052] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:51:03,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:51:03,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 67 [2024-12-02 07:51:03,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894956471] [2024-12-02 07:51:03,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:51:03,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 07:51:03,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:51:03,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 07:51:03,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4065, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 07:51:03,304 INFO L87 Difference]: Start difference. First operand 24300 states and 29275 transitions. Second operand has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:51:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:51:29,768 INFO L93 Difference]: Finished difference Result 35386 states and 42339 transitions. [2024-12-02 07:51:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-12-02 07:51:29,769 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 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 147 [2024-12-02 07:51:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:51:29,782 INFO L225 Difference]: With dead ends: 35386 [2024-12-02 07:51:29,782 INFO L226 Difference]: Without dead ends: 18926 [2024-12-02 07:51:29,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11983 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=7429, Invalid=32371, Unknown=0, NotChecked=0, Total=39800 [2024-12-02 07:51:29,789 INFO L435 NwaCegarLoop]: 1556 mSDtfsCounter, 39682 mSDsluCounter, 31824 mSDsCounter, 0 mSdLazyCounter, 3526 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39682 SdHoareTripleChecker+Valid, 33380 SdHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:51:29,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39682 Valid, 33380 Invalid, 3665 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [139 Valid, 3526 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 07:51:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18926 states. [2024-12-02 07:51:31,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18926 to 17280. [2024-12-02 07:51:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17280 states, 17278 states have (on average 1.21651811552263) internal successors, (21019), 17279 states have internal predecessors, (21019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:51:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17280 states to 17280 states and 21019 transitions. [2024-12-02 07:51:31,752 INFO L78 Accepts]: Start accepts. Automaton has 17280 states and 21019 transitions. Word has length 147 [2024-12-02 07:51:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:51:31,752 INFO L471 AbstractCegarLoop]: Abstraction has 17280 states and 21019 transitions. [2024-12-02 07:51:31,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.776119402985074) internal successors, (387), 67 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:51:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 17280 states and 21019 transitions. [2024-12-02 07:51:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:51:31,753 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:51:31,753 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:51:31,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 07:51:31,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 07:51:31,954 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:51:31,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:51:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1800837796, now seen corresponding path program 1 times [2024-12-02 07:51:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:51:31,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767113553] [2024-12-02 07:51:31,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:51:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:51:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:51:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:51:34,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:51:34,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767113553] [2024-12-02 07:51:34,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767113553] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:51:34,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157204314] [2024-12-02 07:51:34,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:51:34,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:51:34,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:51:34,710 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:51:34,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 07:51:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:51:34,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 07:51:34,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:51:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 73 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:51:38,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:51:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:51:45,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157204314] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:51:45,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:51:45,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 27] total 85 [2024-12-02 07:51:45,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064191624] [2024-12-02 07:51:45,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:51:45,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-12-02 07:51:45,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:51:45,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-12-02 07:51:45,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=6643, Unknown=0, NotChecked=0, Total=7140 [2024-12-02 07:51:45,582 INFO L87 Difference]: Start difference. First operand 17280 states and 21019 transitions. Second operand has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:52:38,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:52:38,320 INFO L93 Difference]: Finished difference Result 19888 states and 24072 transitions. [2024-12-02 07:52:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-12-02 07:52:38,321 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 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 147 [2024-12-02 07:52:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:52:38,332 INFO L225 Difference]: With dead ends: 19888 [2024-12-02 07:52:38,333 INFO L226 Difference]: Without dead ends: 18238 [2024-12-02 07:52:38,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14063 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=7771, Invalid=39101, Unknown=0, NotChecked=0, Total=46872 [2024-12-02 07:52:38,336 INFO L435 NwaCegarLoop]: 1564 mSDtfsCounter, 45228 mSDsluCounter, 37232 mSDsCounter, 0 mSdLazyCounter, 4818 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45228 SdHoareTripleChecker+Valid, 38796 SdHoareTripleChecker+Invalid, 5121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 4818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:52:38,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45228 Valid, 38796 Invalid, 5121 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [303 Valid, 4818 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 07:52:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2024-12-02 07:52:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 17678. [2024-12-02 07:52:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17678 states, 17676 states have (on average 1.2160556687033266) internal successors, (21495), 17677 states have internal predecessors, (21495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:52:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17678 states to 17678 states and 21495 transitions. [2024-12-02 07:52:40,494 INFO L78 Accepts]: Start accepts. Automaton has 17678 states and 21495 transitions. Word has length 147 [2024-12-02 07:52:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:52:40,495 INFO L471 AbstractCegarLoop]: Abstraction has 17678 states and 21495 transitions. [2024-12-02 07:52:40,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 4.952941176470588) internal successors, (421), 85 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:52:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 17678 states and 21495 transitions. [2024-12-02 07:52:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 07:52:40,497 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:52:40,497 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:52:40,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-12-02 07:52:40,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 07:52:40,697 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:52:40,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:52:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash 355894557, now seen corresponding path program 1 times [2024-12-02 07:52:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:52:40,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430996918] [2024-12-02 07:52:40,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:52:40,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:52:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:52:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:52:41,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:52:41,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430996918] [2024-12-02 07:52:41,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430996918] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:52:41,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357435568] [2024-12-02 07:52:41,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:52:41,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:52:41,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:52:41,814 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:52:41,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 07:52:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:52:41,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 07:52:41,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:52:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:52:44,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:52:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 37 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:52:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357435568] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:52:47,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:52:47,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 18] total 60 [2024-12-02 07:52:47,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826060142] [2024-12-02 07:52:47,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:52:47,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 07:52:47,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:52:47,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 07:52:47,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3287, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 07:52:47,393 INFO L87 Difference]: Start difference. First operand 17678 states and 21495 transitions. Second operand has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:53:03,298 INFO L93 Difference]: Finished difference Result 17919 states and 21745 transitions. [2024-12-02 07:53:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-12-02 07:53:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-12-02 07:53:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:53:03,304 INFO L225 Difference]: With dead ends: 17919 [2024-12-02 07:53:03,304 INFO L226 Difference]: Without dead ends: 6947 [2024-12-02 07:53:03,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8491 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=5908, Invalid=25954, Unknown=0, NotChecked=0, Total=31862 [2024-12-02 07:53:03,309 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 36974 mSDsluCounter, 28619 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36974 SdHoareTripleChecker+Valid, 30157 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:53:03,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36974 Valid, 30157 Invalid, 3259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 07:53:03,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2024-12-02 07:53:03,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 6324. [2024-12-02 07:53:03,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6324 states, 6322 states have (on average 1.274913002214489) internal successors, (8060), 6323 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 8060 transitions. [2024-12-02 07:53:03,751 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 8060 transitions. Word has length 148 [2024-12-02 07:53:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:53:03,751 INFO L471 AbstractCegarLoop]: Abstraction has 6324 states and 8060 transitions. [2024-12-02 07:53:03,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.616666666666666) internal successors, (397), 60 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 8060 transitions. [2024-12-02 07:53:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 07:53:03,752 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:53:03,752 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:53:03,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 07:53:03,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 07:53:03,953 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:53:03,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:53:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash -970975155, now seen corresponding path program 1 times [2024-12-02 07:53:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:53:03,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638223624] [2024-12-02 07:53:03,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:53:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:53:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 07:53:04,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:53:04,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638223624] [2024-12-02 07:53:04,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638223624] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:53:04,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077791824] [2024-12-02 07:53:04,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:04,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:53:04,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:53:04,073 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:53:04,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 07:53:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:53:04,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 07:53:04,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:53:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 20 proven. 199 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 07:53:04,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:53:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 92 proven. 134 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 07:53:04,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077791824] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:53:04,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:53:04,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-12-02 07:53:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904691177] [2024-12-02 07:53:04,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:53:04,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 07:53:04,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:53:04,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 07:53:04,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:53:04,799 INFO L87 Difference]: Start difference. First operand 6324 states and 8060 transitions. Second operand has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:53:05,570 INFO L93 Difference]: Finished difference Result 10792 states and 13433 transitions. [2024-12-02 07:53:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:53:05,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-12-02 07:53:05,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:53:05,576 INFO L225 Difference]: With dead ends: 10792 [2024-12-02 07:53:05,576 INFO L226 Difference]: Without dead ends: 8709 [2024-12-02 07:53:05,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:53:05,578 INFO L435 NwaCegarLoop]: 1534 mSDtfsCounter, 3051 mSDsluCounter, 6206 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 7740 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:53:05,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 7740 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:53:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8709 states. [2024-12-02 07:53:06,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8709 to 8552. [2024-12-02 07:53:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8552 states, 8550 states have (on average 1.2209356725146199) internal successors, (10439), 8551 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8552 states to 8552 states and 10439 transitions. [2024-12-02 07:53:06,226 INFO L78 Accepts]: Start accepts. Automaton has 8552 states and 10439 transitions. Word has length 148 [2024-12-02 07:53:06,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:53:06,227 INFO L471 AbstractCegarLoop]: Abstraction has 8552 states and 10439 transitions. [2024-12-02 07:53:06,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.833333333333332) internal successors, (274), 12 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:06,227 INFO L276 IsEmpty]: Start isEmpty. Operand 8552 states and 10439 transitions. [2024-12-02 07:53:06,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 07:53:06,228 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:53:06,228 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:53:06,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 07:53:06,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 07:53:06,428 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:53:06,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:53:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2046949756, now seen corresponding path program 1 times [2024-12-02 07:53:06,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:53:06,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504959209] [2024-12-02 07:53:06,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:06,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:53:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:53:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-12-02 07:53:06,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:53:06,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504959209] [2024-12-02 07:53:06,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504959209] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:53:06,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:53:06,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:53:06,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398535471] [2024-12-02 07:53:06,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:53:06,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:53:06,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:53:06,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:53:06,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:53:06,522 INFO L87 Difference]: Start difference. First operand 8552 states and 10439 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:53:07,179 INFO L93 Difference]: Finished difference Result 9509 states and 11496 transitions. [2024-12-02 07:53:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:53:07,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-12-02 07:53:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:53:07,185 INFO L225 Difference]: With dead ends: 9509 [2024-12-02 07:53:07,186 INFO L226 Difference]: Without dead ends: 8071 [2024-12-02 07:53:07,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:53:07,187 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 2934 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2934 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:53:07,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2934 Valid, 3029 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:53:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2024-12-02 07:53:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 7837. [2024-12-02 07:53:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7837 states, 7835 states have (on average 1.22680280791321) internal successors, (9612), 7836 states have internal predecessors, (9612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7837 states to 7837 states and 9612 transitions. [2024-12-02 07:53:07,772 INFO L78 Accepts]: Start accepts. Automaton has 7837 states and 9612 transitions. Word has length 149 [2024-12-02 07:53:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:53:07,772 INFO L471 AbstractCegarLoop]: Abstraction has 7837 states and 9612 transitions. [2024-12-02 07:53:07,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7837 states and 9612 transitions. [2024-12-02 07:53:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 07:53:07,773 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:53:07,773 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:53:07,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 07:53:07,773 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:53:07,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:53:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1345885178, now seen corresponding path program 1 times [2024-12-02 07:53:07,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:53:07,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528257932] [2024-12-02 07:53:07,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:07,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:53:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:53:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:53:08,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:53:08,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528257932] [2024-12-02 07:53:08,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528257932] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:53:08,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022959328] [2024-12-02 07:53:08,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:08,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:53:08,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:53:08,793 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:53:08,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 07:53:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:53:08,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 07:53:08,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:53:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:53:10,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:53:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:53:18,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022959328] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:53:18,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:53:18,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 64 [2024-12-02 07:53:18,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258374396] [2024-12-02 07:53:18,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:53:18,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 07:53:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:53:18,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 07:53:18,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 07:53:18,141 INFO L87 Difference]: Start difference. First operand 7837 states and 9612 transitions. Second operand has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:53:29,137 INFO L93 Difference]: Finished difference Result 9158 states and 11053 transitions. [2024-12-02 07:53:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-12-02 07:53:29,138 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 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 149 [2024-12-02 07:53:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:53:29,144 INFO L225 Difference]: With dead ends: 9158 [2024-12-02 07:53:29,144 INFO L226 Difference]: Without dead ends: 8808 [2024-12-02 07:53:29,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 257 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5367 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=4208, Invalid=16384, Unknown=0, NotChecked=0, Total=20592 [2024-12-02 07:53:29,147 INFO L435 NwaCegarLoop]: 1529 mSDtfsCounter, 27921 mSDsluCounter, 28010 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27921 SdHoareTripleChecker+Valid, 29539 SdHoareTripleChecker+Invalid, 2534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:53:29,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27921 Valid, 29539 Invalid, 2534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 07:53:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8808 states. [2024-12-02 07:53:29,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8808 to 7684. [2024-12-02 07:53:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7684 states, 7682 states have (on average 1.2298880499869826) internal successors, (9448), 7683 states have internal predecessors, (9448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7684 states to 7684 states and 9448 transitions. [2024-12-02 07:53:29,745 INFO L78 Accepts]: Start accepts. Automaton has 7684 states and 9448 transitions. Word has length 149 [2024-12-02 07:53:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:53:29,745 INFO L471 AbstractCegarLoop]: Abstraction has 7684 states and 9448 transitions. [2024-12-02 07:53:29,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7684 states and 9448 transitions. [2024-12-02 07:53:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 07:53:29,746 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:53:29,746 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:53:29,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 07:53:29,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:53:29,946 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:53:29,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:53:29,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1650018584, now seen corresponding path program 1 times [2024-12-02 07:53:29,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:53:29,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111329491] [2024-12-02 07:53:29,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:29,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:53:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:53:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-12-02 07:53:30,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:53:30,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111329491] [2024-12-02 07:53:30,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111329491] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:53:30,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:53:30,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:53:30,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017898] [2024-12-02 07:53:30,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:53:30,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:53:30,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:53:30,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:53:30,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:53:30,057 INFO L87 Difference]: Start difference. First operand 7684 states and 9448 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:30,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:53:30,666 INFO L93 Difference]: Finished difference Result 8543 states and 10423 transitions. [2024-12-02 07:53:30,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:53:30,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 149 [2024-12-02 07:53:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:53:30,673 INFO L225 Difference]: With dead ends: 8543 [2024-12-02 07:53:30,674 INFO L226 Difference]: Without dead ends: 7632 [2024-12-02 07:53:30,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:53:30,675 INFO L435 NwaCegarLoop]: 1492 mSDtfsCounter, 2921 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2921 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:53:30,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2921 Valid, 3048 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:53:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7632 states. [2024-12-02 07:53:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7632 to 7630. [2024-12-02 07:53:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7630 states, 7628 states have (on average 1.2267960146827477) internal successors, (9358), 7629 states have internal predecessors, (9358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7630 states to 7630 states and 9358 transitions. [2024-12-02 07:53:31,272 INFO L78 Accepts]: Start accepts. Automaton has 7630 states and 9358 transitions. Word has length 149 [2024-12-02 07:53:31,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:53:31,272 INFO L471 AbstractCegarLoop]: Abstraction has 7630 states and 9358 transitions. [2024-12-02 07:53:31,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:53:31,272 INFO L276 IsEmpty]: Start isEmpty. Operand 7630 states and 9358 transitions. [2024-12-02 07:53:31,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 07:53:31,273 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:53:31,273 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:53:31,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 07:53:31,273 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:53:31,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:53:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1623880358, now seen corresponding path program 1 times [2024-12-02 07:53:31,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:53:31,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806101476] [2024-12-02 07:53:31,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:31,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:53:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:53:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:53:32,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:53:32,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806101476] [2024-12-02 07:53:32,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806101476] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:53:32,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717408485] [2024-12-02 07:53:32,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:32,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:53:32,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:53:32,552 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:53:32,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 07:53:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:53:32,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-12-02 07:53:32,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:53:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:53:36,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:53:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 49 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:53:57,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717408485] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:53:57,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:53:57,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 35, 38] total 96 [2024-12-02 07:53:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442249764] [2024-12-02 07:53:57,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:53:57,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-12-02 07:53:57,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:53:57,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-12-02 07:53:57,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1034, Invalid=8086, Unknown=0, NotChecked=0, Total=9120 [2024-12-02 07:53:57,736 INFO L87 Difference]: Start difference. First operand 7630 states and 9358 transitions. Second operand has 96 states, 96 states have (on average 4.375) internal successors, (420), 96 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:54:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:54:44,105 INFO L93 Difference]: Finished difference Result 8997 states and 10861 transitions. [2024-12-02 07:54:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-12-02 07:54:44,106 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 4.375) internal successors, (420), 96 states have internal predecessors, (420), 0 states have call successors, (0), 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 149 [2024-12-02 07:54:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:54:44,114 INFO L225 Difference]: With dead ends: 8997 [2024-12-02 07:54:44,114 INFO L226 Difference]: Without dead ends: 7403 [2024-12-02 07:54:44,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16300 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=9664, Invalid=43466, Unknown=0, NotChecked=0, Total=53130 [2024-12-02 07:54:44,117 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 36317 mSDsluCounter, 36287 mSDsCounter, 0 mSdLazyCounter, 4076 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36317 SdHoareTripleChecker+Valid, 37815 SdHoareTripleChecker+Invalid, 4320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 4076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:54:44,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36317 Valid, 37815 Invalid, 4320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [244 Valid, 4076 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 07:54:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7403 states. [2024-12-02 07:54:44,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7403 to 6410. [2024-12-02 07:54:44,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6410 states, 6408 states have (on average 1.2465667915106118) internal successors, (7988), 6409 states have internal predecessors, (7988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:54:44,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6410 states to 6410 states and 7988 transitions. [2024-12-02 07:54:44,630 INFO L78 Accepts]: Start accepts. Automaton has 6410 states and 7988 transitions. Word has length 149 [2024-12-02 07:54:44,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:54:44,630 INFO L471 AbstractCegarLoop]: Abstraction has 6410 states and 7988 transitions. [2024-12-02 07:54:44,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 4.375) internal successors, (420), 96 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:54:44,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6410 states and 7988 transitions. [2024-12-02 07:54:44,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 07:54:44,631 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:54:44,631 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:54:44,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-12-02 07:54:44,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-12-02 07:54:44,831 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:54:44,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:54:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash 244360452, now seen corresponding path program 1 times [2024-12-02 07:54:44,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:54:44,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692420016] [2024-12-02 07:54:44,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:54:44,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:54:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:54:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-12-02 07:54:44,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:54:44,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692420016] [2024-12-02 07:54:44,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692420016] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:54:44,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:54:44,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:54:44,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48100259] [2024-12-02 07:54:44,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:54:44,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:54:44,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:54:44,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:54:44,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:54:44,925 INFO L87 Difference]: Start difference. First operand 6410 states and 7988 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:54:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:54:45,419 INFO L93 Difference]: Finished difference Result 6590 states and 8178 transitions. [2024-12-02 07:54:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:54:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 149 [2024-12-02 07:54:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:54:45,425 INFO L225 Difference]: With dead ends: 6590 [2024-12-02 07:54:45,425 INFO L226 Difference]: Without dead ends: 6228 [2024-12-02 07:54:45,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:54:45,427 INFO L435 NwaCegarLoop]: 1493 mSDtfsCounter, 2915 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:54:45,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2915 Valid, 3064 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:54:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2024-12-02 07:54:45,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 6218. [2024-12-02 07:54:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 6216 states have (on average 1.2501608751608753) internal successors, (7771), 6217 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:54:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 7771 transitions. [2024-12-02 07:54:45,873 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 7771 transitions. Word has length 149 [2024-12-02 07:54:45,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:54:45,873 INFO L471 AbstractCegarLoop]: Abstraction has 6218 states and 7771 transitions. [2024-12-02 07:54:45,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:54:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 7771 transitions. [2024-12-02 07:54:45,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 07:54:45,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:54:45,874 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:54:45,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 07:54:45,874 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:54:45,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:54:45,874 INFO L85 PathProgramCache]: Analyzing trace with hash 667062278, now seen corresponding path program 1 times [2024-12-02 07:54:45,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:54:45,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103339785] [2024-12-02 07:54:45,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:54:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:54:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:54:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 69 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:54:47,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:54:47,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103339785] [2024-12-02 07:54:47,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103339785] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:54:47,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823424742] [2024-12-02 07:54:47,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:54:47,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:54:47,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:54:47,100 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:54:47,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 07:54:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:54:47,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 07:54:47,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:54:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 69 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:54:48,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:54:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 69 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:54:55,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823424742] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:54:55,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:54:55,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 63 [2024-12-02 07:54:55,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750379582] [2024-12-02 07:54:55,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:54:55,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 07:54:55,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:54:55,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 07:54:55,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=3567, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 07:54:55,934 INFO L87 Difference]: Start difference. First operand 6218 states and 7771 transitions. Second operand has 63 states, 63 states have (on average 6.396825396825397) internal successors, (403), 63 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:55:14,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:55:14,936 INFO L93 Difference]: Finished difference Result 7184 states and 8807 transitions. [2024-12-02 07:55:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-12-02 07:55:14,936 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 6.396825396825397) internal successors, (403), 63 states have internal predecessors, (403), 0 states have call successors, (0), 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 149 [2024-12-02 07:55:14,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:55:14,941 INFO L225 Difference]: With dead ends: 7184 [2024-12-02 07:55:14,941 INFO L226 Difference]: Without dead ends: 6594 [2024-12-02 07:55:14,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7555 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=4086, Invalid=20720, Unknown=0, NotChecked=0, Total=24806 [2024-12-02 07:55:14,944 INFO L435 NwaCegarLoop]: 1516 mSDtfsCounter, 34454 mSDsluCounter, 25129 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34454 SdHoareTripleChecker+Valid, 26645 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:55:14,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34454 Valid, 26645 Invalid, 2679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 07:55:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6594 states. [2024-12-02 07:55:15,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6594 to 5938. [2024-12-02 07:55:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5938 states, 5936 states have (on average 1.2585916442048517) internal successors, (7471), 5937 states have internal predecessors, (7471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:55:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 7471 transitions. [2024-12-02 07:55:15,385 INFO L78 Accepts]: Start accepts. Automaton has 5938 states and 7471 transitions. Word has length 149 [2024-12-02 07:55:15,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:55:15,386 INFO L471 AbstractCegarLoop]: Abstraction has 5938 states and 7471 transitions. [2024-12-02 07:55:15,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 6.396825396825397) internal successors, (403), 63 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:55:15,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5938 states and 7471 transitions. [2024-12-02 07:55:15,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 07:55:15,387 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:55:15,387 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:55:15,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 07:55:15,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-12-02 07:55:15,588 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:55:15,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:55:15,588 INFO L85 PathProgramCache]: Analyzing trace with hash 785882531, now seen corresponding path program 1 times [2024-12-02 07:55:15,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:55:15,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155719962] [2024-12-02 07:55:15,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:55:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:55:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:55:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 147 proven. 74 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 07:55:16,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:55:16,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155719962] [2024-12-02 07:55:16,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155719962] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:55:16,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113726543] [2024-12-02 07:55:16,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:55:16,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:55:16,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:55:16,478 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:55:16,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 07:55:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:55:16,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 07:55:16,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:55:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 39 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:55:18,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:55:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:55:23,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113726543] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:55:23,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:55:23,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 20] total 61 [2024-12-02 07:55:23,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940647809] [2024-12-02 07:55:23,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:55:23,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 07:55:23,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:55:23,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 07:55:23,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=3369, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 07:55:23,221 INFO L87 Difference]: Start difference. First operand 5938 states and 7471 transitions. Second operand has 61 states, 61 states have (on average 6.770491803278689) internal successors, (413), 61 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:55:38,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:55:38,973 INFO L93 Difference]: Finished difference Result 6459 states and 8024 transitions. [2024-12-02 07:55:38,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-12-02 07:55:38,973 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 6.770491803278689) internal successors, (413), 61 states have internal predecessors, (413), 0 states have call successors, (0), 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 150 [2024-12-02 07:55:38,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:55:38,978 INFO L225 Difference]: With dead ends: 6459 [2024-12-02 07:55:38,978 INFO L226 Difference]: Without dead ends: 5742 [2024-12-02 07:55:38,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4909 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=3175, Invalid=17995, Unknown=0, NotChecked=0, Total=21170 [2024-12-02 07:55:38,980 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 31370 mSDsluCounter, 40675 mSDsCounter, 0 mSdLazyCounter, 3783 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31370 SdHoareTripleChecker+Valid, 42235 SdHoareTripleChecker+Invalid, 3928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:55:38,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31370 Valid, 42235 Invalid, 3928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [145 Valid, 3783 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 07:55:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2024-12-02 07:55:39,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5242. [2024-12-02 07:55:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5240 states have (on average 1.2816793893129772) internal successors, (6716), 5241 states have internal predecessors, (6716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:55:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 6716 transitions. [2024-12-02 07:55:39,305 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 6716 transitions. Word has length 150 [2024-12-02 07:55:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:55:39,305 INFO L471 AbstractCegarLoop]: Abstraction has 5242 states and 6716 transitions. [2024-12-02 07:55:39,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 6.770491803278689) internal successors, (413), 61 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:55:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 6716 transitions. [2024-12-02 07:55:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 07:55:39,306 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:55:39,306 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:55:39,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 07:55:39,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-12-02 07:55:39,506 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:55:39,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:55:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1071890304, now seen corresponding path program 1 times [2024-12-02 07:55:39,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:55:39,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750946027] [2024-12-02 07:55:39,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:55:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:55:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:55:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 55 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:55:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:55:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750946027] [2024-12-02 07:55:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750946027] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:55:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117752010] [2024-12-02 07:55:40,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:55:40,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:55:40,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:55:40,824 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:55:40,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 07:55:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:55:40,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-12-02 07:55:40,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:55:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 61 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:55:44,901 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:55:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 55 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:55:49,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117752010] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:55:49,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:55:49,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 20] total 67 [2024-12-02 07:55:49,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060765429] [2024-12-02 07:55:49,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:55:49,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 07:55:49,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:55:49,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 07:55:49,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=4044, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 07:55:49,849 INFO L87 Difference]: Start difference. First operand 5242 states and 6716 transitions. Second operand has 67 states, 67 states have (on average 5.925373134328358) internal successors, (397), 67 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:55:59,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:55:59,946 INFO L93 Difference]: Finished difference Result 5376 states and 6843 transitions. [2024-12-02 07:55:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-12-02 07:55:59,947 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.925373134328358) internal successors, (397), 67 states have internal predecessors, (397), 0 states have call successors, (0), 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 151 [2024-12-02 07:55:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:55:59,952 INFO L225 Difference]: With dead ends: 5376 [2024-12-02 07:55:59,952 INFO L226 Difference]: Without dead ends: 5344 [2024-12-02 07:55:59,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3237 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=2544, Invalid=11976, Unknown=0, NotChecked=0, Total=14520 [2024-12-02 07:55:59,953 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 37135 mSDsluCounter, 31923 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37135 SdHoareTripleChecker+Valid, 33428 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:55:59,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37135 Valid, 33428 Invalid, 2789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 2670 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 07:55:59,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2024-12-02 07:56:00,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5242. [2024-12-02 07:56:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5240 states have (on average 1.2809160305343512) internal successors, (6712), 5241 states have internal predecessors, (6712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 6712 transitions. [2024-12-02 07:56:00,290 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 6712 transitions. Word has length 151 [2024-12-02 07:56:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:00,291 INFO L471 AbstractCegarLoop]: Abstraction has 5242 states and 6712 transitions. [2024-12-02 07:56:00,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.925373134328358) internal successors, (397), 67 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 6712 transitions. [2024-12-02 07:56:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 07:56:00,291 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:00,291 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:56:00,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 07:56:00,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-02 07:56:00,492 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:00,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1993208960, now seen corresponding path program 1 times [2024-12-02 07:56:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:00,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085481731] [2024-12-02 07:56:00,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:00,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 95 proven. 150 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 07:56:00,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:00,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085481731] [2024-12-02 07:56:00,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085481731] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:56:00,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875997324] [2024-12-02 07:56:00,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:00,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:56:00,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:56:00,908 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:56:00,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 07:56:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:01,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:56:01,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:56:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 184 proven. 61 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 07:56:01,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:56:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 167 proven. 78 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 07:56:03,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875997324] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:56:03,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:56:03,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 33 [2024-12-02 07:56:03,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946164293] [2024-12-02 07:56:03,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:56:03,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 07:56:03,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:03,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 07:56:03,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 07:56:03,330 INFO L87 Difference]: Start difference. First operand 5242 states and 6712 transitions. Second operand has 33 states, 33 states have (on average 11.606060606060606) internal successors, (383), 33 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:04,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:04,930 INFO L93 Difference]: Finished difference Result 5386 states and 6850 transitions. [2024-12-02 07:56:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 07:56:04,931 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.606060606060606) internal successors, (383), 33 states have internal predecessors, (383), 0 states have call successors, (0), 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 151 [2024-12-02 07:56:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:04,936 INFO L225 Difference]: With dead ends: 5386 [2024-12-02 07:56:04,936 INFO L226 Difference]: Without dead ends: 5268 [2024-12-02 07:56:04,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=569, Invalid=2293, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 07:56:04,937 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 21737 mSDsluCounter, 13597 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21737 SdHoareTripleChecker+Valid, 15098 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:04,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21737 Valid, 15098 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:56:04,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2024-12-02 07:56:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 5126. [2024-12-02 07:56:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5126 states, 5124 states have (on average 1.2853239656518345) internal successors, (6586), 5125 states have internal predecessors, (6586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 6586 transitions. [2024-12-02 07:56:05,249 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 6586 transitions. Word has length 151 [2024-12-02 07:56:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:05,249 INFO L471 AbstractCegarLoop]: Abstraction has 5126 states and 6586 transitions. [2024-12-02 07:56:05,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.606060606060606) internal successors, (383), 33 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 6586 transitions. [2024-12-02 07:56:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 07:56:05,250 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:05,250 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:05,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 07:56:05,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 07:56:05,450 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:05,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1576793123, now seen corresponding path program 1 times [2024-12-02 07:56:05,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:05,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196291406] [2024-12-02 07:56:05,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:05,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 149 proven. 74 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 07:56:06,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:06,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196291406] [2024-12-02 07:56:06,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196291406] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:56:06,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564103668] [2024-12-02 07:56:06,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:06,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:56:06,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:56:06,940 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:56:06,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 07:56:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:07,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 07:56:07,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:56:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 151 proven. 64 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 07:56:09,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:56:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 151 proven. 65 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 07:56:15,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564103668] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:56:15,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:56:15,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 25] total 70 [2024-12-02 07:56:15,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100759883] [2024-12-02 07:56:15,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:56:15,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-12-02 07:56:15,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:15,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-12-02 07:56:15,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=4465, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 07:56:15,094 INFO L87 Difference]: Start difference. First operand 5126 states and 6586 transitions. Second operand has 70 states, 70 states have (on average 4.5285714285714285) internal successors, (317), 70 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:32,800 INFO L93 Difference]: Finished difference Result 5138 states and 6592 transitions. [2024-12-02 07:56:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 07:56:32,801 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.5285714285714285) internal successors, (317), 70 states have internal predecessors, (317), 0 states have call successors, (0), 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 152 [2024-12-02 07:56:32,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:32,805 INFO L225 Difference]: With dead ends: 5138 [2024-12-02 07:56:32,805 INFO L226 Difference]: Without dead ends: 4892 [2024-12-02 07:56:32,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4208 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=2654, Invalid=13858, Unknown=0, NotChecked=0, Total=16512 [2024-12-02 07:56:32,807 INFO L435 NwaCegarLoop]: 1478 mSDtfsCounter, 35652 mSDsluCounter, 35847 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35652 SdHoareTripleChecker+Valid, 37325 SdHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:32,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35652 Valid, 37325 Invalid, 2408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 07:56:32,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2024-12-02 07:56:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4882. [2024-12-02 07:56:33,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4880 states have (on average 1.2975409836065575) internal successors, (6332), 4881 states have internal predecessors, (6332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 6332 transitions. [2024-12-02 07:56:33,053 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 6332 transitions. Word has length 152 [2024-12-02 07:56:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:33,053 INFO L471 AbstractCegarLoop]: Abstraction has 4882 states and 6332 transitions. [2024-12-02 07:56:33,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.5285714285714285) internal successors, (317), 70 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 6332 transitions. [2024-12-02 07:56:33,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 07:56:33,054 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:33,054 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:33,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 07:56:33,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 07:56:33,255 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:33,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash 115825923, now seen corresponding path program 1 times [2024-12-02 07:56:33,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:33,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764521984] [2024-12-02 07:56:33,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:33,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 149 proven. 75 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 07:56:35,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:35,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764521984] [2024-12-02 07:56:35,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764521984] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:56:35,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966594598] [2024-12-02 07:56:35,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:35,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:56:35,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:56:35,316 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:56:35,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb8b96a9-6c9f-4b83-b14c-f3b523902890/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 07:56:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:35,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-12-02 07:56:35,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:56:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 149 proven. 74 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 07:56:40,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:56:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 116 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:59,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966594598] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:56:59,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:56:59,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 34, 43] total 100 [2024-12-02 07:56:59,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851773179] [2024-12-02 07:56:59,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:56:59,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-12-02 07:56:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:59,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-12-02 07:56:59,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1356, Invalid=8544, Unknown=0, NotChecked=0, Total=9900 [2024-12-02 07:56:59,252 INFO L87 Difference]: Start difference. First operand 4882 states and 6332 transitions. Second operand has 100 states, 100 states have (on average 3.64) internal successors, (364), 100 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)