./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.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_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/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_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/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_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/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 b034b25c13122a131dcef5e20457a6ebe39c9d7c5637a670f7b0b39a233b1f7a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 09:02:59,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 09:02:59,314 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 09:02:59,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 09:02:59,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 09:02:59,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 09:02:59,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 09:02:59,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 09:02:59,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 09:02:59,344 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 09:02:59,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 09:02:59,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 09:02:59,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 09:02:59,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 09:02:59,344 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 09:02:59,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 09:02:59,345 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 09:02:59,346 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 09:02:59,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:02:59,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:02:59,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:02:59,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:02:59,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 09:02:59,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:02:59,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:02:59,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:02:59,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:02:59,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 09:02:59,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 09:02:59,347 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 09:02:59,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 09:02:59,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 09:02:59,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 09:02:59,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 09:02:59,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 09:02:59,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 09:02:59,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 09:02:59,347 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_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/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 -> b034b25c13122a131dcef5e20457a6ebe39c9d7c5637a670f7b0b39a233b1f7a [2024-12-02 09:02:59,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 09:02:59,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 09:02:59,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 09:02:59,581 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 09:02:59,581 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 09:02:59,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c [2024-12-02 09:03:02,252 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/data/0674b8072/895c9a86c90349acacffeb6b16570acf/FLAG8b8e05b96 [2024-12-02 09:03:02,636 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 09:03:02,636 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c [2024-12-02 09:03:02,657 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/data/0674b8072/895c9a86c90349acacffeb6b16570acf/FLAG8b8e05b96 [2024-12-02 09:03:02,818 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/data/0674b8072/895c9a86c90349acacffeb6b16570acf [2024-12-02 09:03:02,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 09:03:02,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 09:03:02,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 09:03:02,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 09:03:02,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 09:03:02,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:03:02" (1/1) ... [2024-12-02 09:03:02,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f249f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:02, skipping insertion in model container [2024-12-02 09:03:02,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:03:02" (1/1) ... [2024-12-02 09:03:02,904 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 09:03:03,134 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_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c[6354,6367] [2024-12-02 09:03:03,175 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_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c[11909,11922] [2024-12-02 09:03:03,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:03:03,783 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 09:03:03,805 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_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c[6354,6367] [2024-12-02 09:03:03,816 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_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c[11909,11922] [2024-12-02 09:03:04,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:03:04,243 INFO L204 MainTranslator]: Completed translation [2024-12-02 09:03:04,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04 WrapperNode [2024-12-02 09:03:04,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 09:03:04,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 09:03:04,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 09:03:04,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 09:03:04,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,498 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-12-02 09:03:04,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 09:03:04,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 09:03:04,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 09:03:04,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 09:03:04,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,538 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,652 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 09:03:04,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,747 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 09:03:04,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 09:03:04,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 09:03:04,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 09:03:04,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (1/1) ... [2024-12-02 09:03:04,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:03:04,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:03:04,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 09:03:04,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 09:03:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 09:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 09:03:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 09:03:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 09:03:05,028 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 09:03:05,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 09:03:09,358 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-12-02 09:03:09,358 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 09:03:09,384 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 09:03:09,384 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 09:03:09,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:03:09 BoogieIcfgContainer [2024-12-02 09:03:09,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 09:03:09,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 09:03:09,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 09:03:09,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 09:03:09,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:03:02" (1/3) ... [2024-12-02 09:03:09,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ff7d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:03:09, skipping insertion in model container [2024-12-02 09:03:09,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:03:04" (2/3) ... [2024-12-02 09:03:09,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ff7d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:03:09, skipping insertion in model container [2024-12-02 09:03:09,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:03:09" (3/3) ... [2024-12-02 09:03:09,394 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c [2024-12-02 09:03:09,405 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 09:03:09,407 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 09:03:09,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 09:03:09,493 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;@18e93018, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 09:03:09,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 09:03:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 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 09:03:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 09:03:09,507 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:09,508 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] [2024-12-02 09:03:09,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:09,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-12-02 09:03:09,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:09,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948334627] [2024-12-02 09:03:09,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:09,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:09,693 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 09:03:09,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948334627] [2024-12-02 09:03:09,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948334627] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:09,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:09,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 09:03:09,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006417681] [2024-12-02 09:03:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:09,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 09:03:09,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:09,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 09:03:09,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 09:03:09,723 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 09:03:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:09,793 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-12-02 09:03:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 09:03:09,794 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-12-02 09:03:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:09,808 INFO L225 Difference]: With dead ends: 1724 [2024-12-02 09:03:09,808 INFO L226 Difference]: Without dead ends: 807 [2024-12-02 09:03:09,813 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 09:03:09,816 INFO L435 NwaCegarLoop]: 1592 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, 1592 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 09:03:09,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-12-02 09:03:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-12-02 09:03:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 0 states have call successors, (0), 0 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 09:03:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-12-02 09:03:09,881 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-12-02 09:03:09,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:09,882 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-12-02 09:03:09,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 09:03:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-12-02 09:03:09,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 09:03:09,883 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:09,883 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] [2024-12-02 09:03:09,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 09:03:09,883 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:09,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-12-02 09:03:09,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:09,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237943879] [2024-12-02 09:03:09,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:09,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:10,064 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 09:03:10,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:10,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237943879] [2024-12-02 09:03:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237943879] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:10,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:10,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:03:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803999194] [2024-12-02 09:03:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:10,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:03:10,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:10,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:03:10,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:03:10,067 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 09:03:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:10,177 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-12-02 09:03:10,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:03:10,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-12-02 09:03:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:10,182 INFO L225 Difference]: With dead ends: 873 [2024-12-02 09:03:10,182 INFO L226 Difference]: Without dead ends: 838 [2024-12-02 09:03:10,183 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 09:03:10,184 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:10,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-12-02 09:03:10,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-12-02 09:03:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 0 states have call successors, (0), 0 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 09:03:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-12-02 09:03:10,213 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-12-02 09:03:10,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:10,213 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-12-02 09:03:10,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 09:03:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-12-02 09:03:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 09:03:10,215 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:10,215 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] [2024-12-02 09:03:10,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 09:03:10,215 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:10,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-12-02 09:03:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:10,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833742093] [2024-12-02 09:03:10,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:10,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:10,361 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 09:03:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833742093] [2024-12-02 09:03:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833742093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:10,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:10,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:03:10,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343069316] [2024-12-02 09:03:10,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:10,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:03:10,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:10,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:03:10,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:03:10,363 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:10,489 INFO L93 Difference]: Finished difference Result 993 states and 1797 transitions. [2024-12-02 09:03:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 09:03:10,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-12-02 09:03:10,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:10,494 INFO L225 Difference]: With dead ends: 993 [2024-12-02 09:03:10,494 INFO L226 Difference]: Without dead ends: 962 [2024-12-02 09:03:10,495 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 09:03:10,495 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:10,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 09:03:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-12-02 09:03:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 836. [2024-12-02 09:03:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 834 states have (on average 1.8633093525179856) internal successors, (1554), 835 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 09:03:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1554 transitions. [2024-12-02 09:03:10,516 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1554 transitions. Word has length 36 [2024-12-02 09:03:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:10,517 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1554 transitions. [2024-12-02 09:03:10,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1554 transitions. [2024-12-02 09:03:10,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 09:03:10,518 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:10,518 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 09:03:10,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 09:03:10,518 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:10,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:10,519 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-12-02 09:03:10,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:10,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752865179] [2024-12-02 09:03:10,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:10,600 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 09:03:10,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:10,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752865179] [2024-12-02 09:03:10,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752865179] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:10,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:10,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:03:10,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563528907] [2024-12-02 09:03:10,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:10,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:03:10,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:10,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:03:10,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:03:10,602 INFO L87 Difference]: Start difference. First operand 836 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:10,639 INFO L93 Difference]: Finished difference Result 945 states and 1721 transitions. [2024-12-02 09:03:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:03:10,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 09:03:10,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:10,644 INFO L225 Difference]: With dead ends: 945 [2024-12-02 09:03:10,644 INFO L226 Difference]: Without dead ends: 885 [2024-12-02 09:03:10,645 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 09:03:10,645 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:10,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-12-02 09:03:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-12-02 09:03:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8433598183881952) internal successors, (1624), 882 states have internal predecessors, (1624), 0 states have call successors, (0), 0 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 09:03:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1624 transitions. [2024-12-02 09:03:10,676 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1624 transitions. Word has length 38 [2024-12-02 09:03:10,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:10,677 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1624 transitions. [2024-12-02 09:03:10,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1624 transitions. [2024-12-02 09:03:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 09:03:10,678 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:10,678 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 09:03:10,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 09:03:10,678 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:10,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-12-02 09:03:10,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:10,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467506549] [2024-12-02 09:03:10,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:10,878 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 09:03:10,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:10,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467506549] [2024-12-02 09:03:10,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467506549] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:10,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:10,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:03:10,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299199852] [2024-12-02 09:03:10,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:10,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:03:10,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:10,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:03:10,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:03:10,880 INFO L87 Difference]: Start difference. First operand 883 states and 1624 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:10,976 INFO L93 Difference]: Finished difference Result 992 states and 1788 transitions. [2024-12-02 09:03:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:03:10,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 09:03:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:10,981 INFO L225 Difference]: With dead ends: 992 [2024-12-02 09:03:10,981 INFO L226 Difference]: Without dead ends: 885 [2024-12-02 09:03:10,981 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 09:03:10,982 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 1475 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1636 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 09:03:10,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-12-02 09:03:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-12-02 09:03:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8410896708286038) internal successors, (1622), 882 states have internal predecessors, (1622), 0 states have call successors, (0), 0 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 09:03:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1622 transitions. [2024-12-02 09:03:11,011 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1622 transitions. Word has length 38 [2024-12-02 09:03:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:11,012 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1622 transitions. [2024-12-02 09:03:11,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1622 transitions. [2024-12-02 09:03:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 09:03:11,013 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:11,013 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 09:03:11,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 09:03:11,013 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:11,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-12-02 09:03:11,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:11,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675939705] [2024-12-02 09:03:11,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:11,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:11,232 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 09:03:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675939705] [2024-12-02 09:03:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675939705] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:11,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:11,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:03:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575631705] [2024-12-02 09:03:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:11,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:03:11,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:11,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:03:11,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:03:11,234 INFO L87 Difference]: Start difference. First operand 883 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:11,287 INFO L93 Difference]: Finished difference Result 891 states and 1631 transitions. [2024-12-02 09:03:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:03:11,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-12-02 09:03:11,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:11,291 INFO L225 Difference]: With dead ends: 891 [2024-12-02 09:03:11,291 INFO L226 Difference]: Without dead ends: 889 [2024-12-02 09:03:11,292 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 09:03:11,293 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:11,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:11,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-12-02 09:03:11,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2024-12-02 09:03:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 887 states have (on average 1.834272829763247) internal successors, (1627), 888 states have internal predecessors, (1627), 0 states have call successors, (0), 0 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 09:03:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1627 transitions. [2024-12-02 09:03:11,323 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1627 transitions. Word has length 39 [2024-12-02 09:03:11,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:11,323 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 1627 transitions. [2024-12-02 09:03:11,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1627 transitions. [2024-12-02 09:03:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 09:03:11,324 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:11,324 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] [2024-12-02 09:03:11,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 09:03:11,324 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:11,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-12-02 09:03:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969481611] [2024-12-02 09:03:11,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:11,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:11,382 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 09:03:11,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:11,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969481611] [2024-12-02 09:03:11,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969481611] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:11,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:11,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:03:11,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498029701] [2024-12-02 09:03:11,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:11,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:03:11,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:11,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:03:11,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:03:11,384 INFO L87 Difference]: Start difference. First operand 889 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:11,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:11,420 INFO L93 Difference]: Finished difference Result 1099 states and 1931 transitions. [2024-12-02 09:03:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:03:11,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 09:03:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:11,425 INFO L225 Difference]: With dead ends: 1099 [2024-12-02 09:03:11,425 INFO L226 Difference]: Without dead ends: 986 [2024-12-02 09:03:11,426 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 09:03:11,426 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 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 09:03:11,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:11,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-12-02 09:03:11,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-12-02 09:03:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.7922606924643585) internal successors, (1760), 983 states have internal predecessors, (1760), 0 states have call successors, (0), 0 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 09:03:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1760 transitions. [2024-12-02 09:03:11,460 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1760 transitions. Word has length 40 [2024-12-02 09:03:11,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:11,460 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1760 transitions. [2024-12-02 09:03:11,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:11,460 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1760 transitions. [2024-12-02 09:03:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 09:03:11,461 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:11,461 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] [2024-12-02 09:03:11,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 09:03:11,461 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:11,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:11,462 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-12-02 09:03:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659022170] [2024-12-02 09:03:11,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:11,518 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 09:03:11,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:11,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659022170] [2024-12-02 09:03:11,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659022170] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:11,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:11,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:03:11,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858119525] [2024-12-02 09:03:11,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:11,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:03:11,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:11,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:03:11,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:03:11,520 INFO L87 Difference]: Start difference. First operand 984 states and 1760 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:11,560 INFO L93 Difference]: Finished difference Result 1368 states and 2302 transitions. [2024-12-02 09:03:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:03:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 09:03:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:11,566 INFO L225 Difference]: With dead ends: 1368 [2024-12-02 09:03:11,566 INFO L226 Difference]: Without dead ends: 1160 [2024-12-02 09:03:11,567 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 09:03:11,567 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 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 09:03:11,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-12-02 09:03:11,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1158. [2024-12-02 09:03:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1156 states have (on average 1.7249134948096885) internal successors, (1994), 1157 states have internal predecessors, (1994), 0 states have call successors, (0), 0 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 09:03:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1994 transitions. [2024-12-02 09:03:11,601 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1994 transitions. Word has length 40 [2024-12-02 09:03:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:11,601 INFO L471 AbstractCegarLoop]: Abstraction has 1158 states and 1994 transitions. [2024-12-02 09:03:11,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1994 transitions. [2024-12-02 09:03:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 09:03:11,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:11,602 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] [2024-12-02 09:03:11,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 09:03:11,602 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:11,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-12-02 09:03:11,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:11,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814801559] [2024-12-02 09:03:11,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:11,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:11,645 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 09:03:11,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:11,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814801559] [2024-12-02 09:03:11,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814801559] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:11,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:11,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:03:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266827944] [2024-12-02 09:03:11,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:11,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:03:11,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:11,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:03:11,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:03:11,647 INFO L87 Difference]: Start difference. First operand 1158 states and 1994 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:11,681 INFO L93 Difference]: Finished difference Result 1581 states and 2592 transitions. [2024-12-02 09:03:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:03:11,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 09:03:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:11,687 INFO L225 Difference]: With dead ends: 1581 [2024-12-02 09:03:11,687 INFO L226 Difference]: Without dead ends: 1355 [2024-12-02 09:03:11,688 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 09:03:11,688 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 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 09:03:11,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2024-12-02 09:03:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1353. [2024-12-02 09:03:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1351 states have (on average 1.6706143597335308) internal successors, (2257), 1352 states have internal predecessors, (2257), 0 states have call successors, (0), 0 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 09:03:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 2257 transitions. [2024-12-02 09:03:11,724 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 2257 transitions. Word has length 40 [2024-12-02 09:03:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:11,724 INFO L471 AbstractCegarLoop]: Abstraction has 1353 states and 2257 transitions. [2024-12-02 09:03:11,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 2257 transitions. [2024-12-02 09:03:11,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 09:03:11,725 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:11,725 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] [2024-12-02 09:03:11,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 09:03:11,725 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:11,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash 12088885, now seen corresponding path program 1 times [2024-12-02 09:03:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219465036] [2024-12-02 09:03:11,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:11,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:11,788 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 09:03:11,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:11,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219465036] [2024-12-02 09:03:11,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219465036] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:11,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:11,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 09:03:11,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989860004] [2024-12-02 09:03:11,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:11,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:03:11,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:11,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:03:11,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:03:11,789 INFO L87 Difference]: Start difference. First operand 1353 states and 2257 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:15,048 INFO L93 Difference]: Finished difference Result 2857 states and 5130 transitions. [2024-12-02 09:03:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:03:15,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 09:03:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:15,055 INFO L225 Difference]: With dead ends: 2857 [2024-12-02 09:03:15,055 INFO L226 Difference]: Without dead ends: 2104 [2024-12-02 09:03:15,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:03:15,056 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 837 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:15,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 147 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 09:03:15,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2024-12-02 09:03:15,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2104. [2024-12-02 09:03:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.7278782112274025) internal successors, (3632), 2103 states have internal predecessors, (3632), 0 states have call successors, (0), 0 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 09:03:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3632 transitions. [2024-12-02 09:03:15,093 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3632 transitions. Word has length 48 [2024-12-02 09:03:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:15,093 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3632 transitions. [2024-12-02 09:03:15,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3632 transitions. [2024-12-02 09:03:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 09:03:15,094 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:15,094 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] [2024-12-02 09:03:15,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 09:03:15,094 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:15,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-12-02 09:03:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823415041] [2024-12-02 09:03:15,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:15,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 09:03:15,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:15,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823415041] [2024-12-02 09:03:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823415041] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:15,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:15,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:03:15,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319686654] [2024-12-02 09:03:15,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:15,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:03:15,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:15,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:03:15,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:03:15,186 INFO L87 Difference]: Start difference. First operand 2104 states and 3632 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 09:03:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:15,267 INFO L93 Difference]: Finished difference Result 3960 states and 6184 transitions. [2024-12-02 09:03:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:03:15,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 09:03:15,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:15,275 INFO L225 Difference]: With dead ends: 3960 [2024-12-02 09:03:15,275 INFO L226 Difference]: Without dead ends: 3386 [2024-12-02 09:03:15,276 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 09:03:15,276 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3042 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:15,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 3159 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-12-02 09:03:15,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2676. [2024-12-02 09:03:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2674 states have (on average 1.649962602842184) internal successors, (4412), 2675 states have internal predecessors, (4412), 0 states have call successors, (0), 0 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 09:03:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4412 transitions. [2024-12-02 09:03:15,322 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4412 transitions. Word has length 56 [2024-12-02 09:03:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:15,322 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 4412 transitions. [2024-12-02 09:03:15,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 09:03:15,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4412 transitions. [2024-12-02 09:03:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 09:03:15,323 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:15,323 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] [2024-12-02 09:03:15,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 09:03:15,324 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:15,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-12-02 09:03:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:15,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110801319] [2024-12-02 09:03:15,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:15,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 09:03:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:15,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110801319] [2024-12-02 09:03:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110801319] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:15,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:15,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:03:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001358735] [2024-12-02 09:03:15,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:15,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:03:15,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:15,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:03:15,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:03:15,408 INFO L87 Difference]: Start difference. First operand 2676 states and 4412 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:15,488 INFO L93 Difference]: Finished difference Result 4532 states and 6964 transitions. [2024-12-02 09:03:15,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:03:15,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 09:03:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:15,496 INFO L225 Difference]: With dead ends: 4532 [2024-12-02 09:03:15,496 INFO L226 Difference]: Without dead ends: 3958 [2024-12-02 09:03:15,497 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 09:03:15,497 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3050 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:15,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3148 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2024-12-02 09:03:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3536. [2024-12-02 09:03:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.5766836445953594) internal successors, (5572), 3535 states have internal predecessors, (5572), 0 states have call successors, (0), 0 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 09:03:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5572 transitions. [2024-12-02 09:03:15,553 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5572 transitions. Word has length 56 [2024-12-02 09:03:15,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:15,554 INFO L471 AbstractCegarLoop]: Abstraction has 3536 states and 5572 transitions. [2024-12-02 09:03:15,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5572 transitions. [2024-12-02 09:03:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 09:03:15,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:15,554 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] [2024-12-02 09:03:15,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 09:03:15,555 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:15,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:15,555 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-12-02 09:03:15,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:15,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574678249] [2024-12-02 09:03:15,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:15,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 09:03:15,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:15,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574678249] [2024-12-02 09:03:15,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574678249] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:15,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:15,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:03:15,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33201801] [2024-12-02 09:03:15,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:15,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:03:15,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:15,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:03:15,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:03:15,675 INFO L87 Difference]: Start difference. First operand 3536 states and 5572 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:15,778 INFO L93 Difference]: Finished difference Result 4792 states and 7328 transitions. [2024-12-02 09:03:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:03:15,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 09:03:15,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:15,789 INFO L225 Difference]: With dead ends: 4792 [2024-12-02 09:03:15,789 INFO L226 Difference]: Without dead ends: 4374 [2024-12-02 09:03:15,791 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 09:03:15,791 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3043 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:15,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3163 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2024-12-02 09:03:15,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 3952. [2024-12-02 09:03:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5564556962025315) internal successors, (6148), 3951 states have internal predecessors, (6148), 0 states have call successors, (0), 0 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 09:03:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6148 transitions. [2024-12-02 09:03:15,889 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6148 transitions. Word has length 56 [2024-12-02 09:03:15,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:15,889 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6148 transitions. [2024-12-02 09:03:15,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6148 transitions. [2024-12-02 09:03:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 09:03:15,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:15,890 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, 1] [2024-12-02 09:03:15,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 09:03:15,891 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:15,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:15,891 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-12-02 09:03:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:15,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971422301] [2024-12-02 09:03:15,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:15,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:15,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:15,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971422301] [2024-12-02 09:03:15,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971422301] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:15,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:15,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:03:15,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132450281] [2024-12-02 09:03:15,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:15,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:03:15,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:15,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:03:15,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:03:15,977 INFO L87 Difference]: Start difference. First operand 3952 states and 6148 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 09:03:16,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:16,034 INFO L93 Difference]: Finished difference Result 6376 states and 9458 transitions. [2024-12-02 09:03:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:03:16,034 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 09:03:16,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:16,044 INFO L225 Difference]: With dead ends: 6376 [2024-12-02 09:03:16,045 INFO L226 Difference]: Without dead ends: 3954 [2024-12-02 09:03:16,048 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 09:03:16,048 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 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 09:03:16,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2024-12-02 09:03:16,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3952. [2024-12-02 09:03:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5437974683544304) internal successors, (6098), 3951 states have internal predecessors, (6098), 0 states have call successors, (0), 0 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 09:03:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6098 transitions. [2024-12-02 09:03:16,139 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6098 transitions. Word has length 57 [2024-12-02 09:03:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:16,139 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6098 transitions. [2024-12-02 09:03:16,139 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 09:03:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6098 transitions. [2024-12-02 09:03:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 09:03:16,140 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:16,140 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:03:16,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 09:03:16,141 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:16,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:16,141 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-12-02 09:03:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:16,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12504299] [2024-12-02 09:03:16,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:16,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:16,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12504299] [2024-12-02 09:03:16,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12504299] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:16,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:16,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:03:16,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674900143] [2024-12-02 09:03:16,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:16,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:03:16,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:16,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:03:16,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:03:16,226 INFO L87 Difference]: Start difference. First operand 3952 states and 6098 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:16,264 INFO L93 Difference]: Finished difference Result 4908 states and 7395 transitions. [2024-12-02 09:03:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:03:16,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-02 09:03:16,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:16,270 INFO L225 Difference]: With dead ends: 4908 [2024-12-02 09:03:16,270 INFO L226 Difference]: Without dead ends: 2486 [2024-12-02 09:03:16,273 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 09:03:16,274 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 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 09:03:16,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2024-12-02 09:03:16,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2477. [2024-12-02 09:03:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.6602020202020202) internal successors, (4109), 2476 states have internal predecessors, (4109), 0 states have call successors, (0), 0 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 09:03:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4109 transitions. [2024-12-02 09:03:16,323 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4109 transitions. Word has length 58 [2024-12-02 09:03:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:16,323 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 4109 transitions. [2024-12-02 09:03:16,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:03:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4109 transitions. [2024-12-02 09:03:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 09:03:16,324 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:16,324 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, 1, 1] [2024-12-02 09:03:16,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 09:03:16,324 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:16,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-12-02 09:03:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679585366] [2024-12-02 09:03:16,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:16,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:16,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679585366] [2024-12-02 09:03:16,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679585366] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:16,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:16,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:03:16,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684112549] [2024-12-02 09:03:16,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:16,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:03:16,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:16,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:03:16,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:03:16,404 INFO L87 Difference]: Start difference. First operand 2477 states and 4109 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 09:03:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:16,432 INFO L93 Difference]: Finished difference Result 2949 states and 4741 transitions. [2024-12-02 09:03:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:03:16,432 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 09:03:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:16,437 INFO L225 Difference]: With dead ends: 2949 [2024-12-02 09:03:16,437 INFO L226 Difference]: Without dead ends: 2011 [2024-12-02 09:03:16,439 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 09:03:16,440 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 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 09:03:16,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 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 09:03:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2024-12-02 09:03:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2024-12-02 09:03:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2007 states have (on average 1.7289486796213254) internal successors, (3470), 2008 states have internal predecessors, (3470), 0 states have call successors, (0), 0 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 09:03:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3470 transitions. [2024-12-02 09:03:16,475 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3470 transitions. Word has length 59 [2024-12-02 09:03:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:16,475 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 3470 transitions. [2024-12-02 09:03:16,475 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 09:03:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3470 transitions. [2024-12-02 09:03:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 09:03:16,476 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:16,476 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] [2024-12-02 09:03:16,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 09:03:16,476 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:16,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-12-02 09:03:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621739395] [2024-12-02 09:03:16,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 09:03:16,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:16,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621739395] [2024-12-02 09:03:16,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621739395] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:03:16,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341332670] [2024-12-02 09:03:16,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:16,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:16,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:03:16,613 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:03:16,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 09:03:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:16,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 09:03:16,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:03:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:17,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:03:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341332670] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:03:17,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:03:17,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-12-02 09:03:17,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767489817] [2024-12-02 09:03:17,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:03:17,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 09:03:17,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:17,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 09:03:17,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-12-02 09:03:17,930 INFO L87 Difference]: Start difference. First operand 2009 states and 3470 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 09:03:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:18,684 INFO L93 Difference]: Finished difference Result 3490 states and 5383 transitions. [2024-12-02 09:03:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 09:03:18,684 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 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 09:03:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:18,688 INFO L225 Difference]: With dead ends: 3490 [2024-12-02 09:03:18,688 INFO L226 Difference]: Without dead ends: 3020 [2024-12-02 09:03:18,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 09:03:18,690 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 9191 mSDsluCounter, 4637 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9191 SdHoareTripleChecker+Valid, 6124 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:18,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9191 Valid, 6124 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 09:03:18,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2024-12-02 09:03:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2880. [2024-12-02 09:03:18,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2878 states have (on average 1.5764419735927728) internal successors, (4537), 2879 states have internal predecessors, (4537), 0 states have call successors, (0), 0 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 09:03:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4537 transitions. [2024-12-02 09:03:18,729 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4537 transitions. Word has length 61 [2024-12-02 09:03:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:18,730 INFO L471 AbstractCegarLoop]: Abstraction has 2880 states and 4537 transitions. [2024-12-02 09:03:18,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 09:03:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4537 transitions. [2024-12-02 09:03:18,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 09:03:18,731 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:18,731 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, 1, 1, 1, 1, 1] [2024-12-02 09:03:18,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 09:03:18,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 09:03:18,931 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:18,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2045594482, now seen corresponding path program 1 times [2024-12-02 09:03:18,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:18,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724282434] [2024-12-02 09:03:18,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:18,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:19,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:19,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724282434] [2024-12-02 09:03:19,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724282434] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:03:19,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955394835] [2024-12-02 09:03:19,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:19,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:19,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:03:19,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:03:19,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 09:03:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:19,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 09:03:19,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:03:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:19,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:03:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:20,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955394835] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:03:20,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:03:20,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-02 09:03:20,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715189227] [2024-12-02 09:03:20,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:03:20,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 09:03:20,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:20,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 09:03:20,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-12-02 09:03:20,497 INFO L87 Difference]: Start difference. First operand 2880 states and 4537 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 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 09:03:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:21,619 INFO L93 Difference]: Finished difference Result 6371 states and 9016 transitions. [2024-12-02 09:03:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 09:03:21,620 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 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 62 [2024-12-02 09:03:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:21,626 INFO L225 Difference]: With dead ends: 6371 [2024-12-02 09:03:21,627 INFO L226 Difference]: Without dead ends: 5150 [2024-12-02 09:03:21,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 09:03:21,629 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 19739 mSDsluCounter, 6328 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19739 SdHoareTripleChecker+Valid, 7815 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:21,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19739 Valid, 7815 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 09:03:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2024-12-02 09:03:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 5124. [2024-12-02 09:03:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5122 states have (on average 1.4353768059351815) internal successors, (7352), 5123 states have internal predecessors, (7352), 0 states have call successors, (0), 0 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 09:03:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 7352 transitions. [2024-12-02 09:03:21,705 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 7352 transitions. Word has length 62 [2024-12-02 09:03:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:21,705 INFO L471 AbstractCegarLoop]: Abstraction has 5124 states and 7352 transitions. [2024-12-02 09:03:21,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 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 09:03:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 7352 transitions. [2024-12-02 09:03:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 09:03:21,706 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:21,706 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, 1, 1] [2024-12-02 09:03:21,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 09:03:21,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 09:03:21,906 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:21,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -679621431, now seen corresponding path program 1 times [2024-12-02 09:03:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:21,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157696597] [2024-12-02 09:03:21,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:21,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:22,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:22,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157696597] [2024-12-02 09:03:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157696597] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:03:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880219234] [2024-12-02 09:03:22,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:22,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:22,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:03:22,689 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:03:22,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 09:03:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:22,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 09:03:22,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:03:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:23,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:03:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:24,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880219234] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:03:24,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:03:24,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-12-02 09:03:24,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390779116] [2024-12-02 09:03:24,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:03:24,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 09:03:24,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:24,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 09:03:24,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-12-02 09:03:24,356 INFO L87 Difference]: Start difference. First operand 5124 states and 7352 transitions. Second operand has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 09:03:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:25,844 INFO L93 Difference]: Finished difference Result 11908 states and 16203 transitions. [2024-12-02 09:03:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 09:03:25,845 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 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 09:03:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:25,859 INFO L225 Difference]: With dead ends: 11908 [2024-12-02 09:03:25,859 INFO L226 Difference]: Without dead ends: 10404 [2024-12-02 09:03:25,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=548, Invalid=2104, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 09:03:25,862 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 10471 mSDsluCounter, 10669 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10471 SdHoareTripleChecker+Valid, 12168 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:25,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10471 Valid, 12168 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 09:03:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2024-12-02 09:03:25,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 4691. [2024-12-02 09:03:25,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4689 states have (on average 1.451695457453615) internal successors, (6807), 4690 states have internal predecessors, (6807), 0 states have call successors, (0), 0 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 09:03:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 6807 transitions. [2024-12-02 09:03:25,971 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 6807 transitions. Word has length 63 [2024-12-02 09:03:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:25,972 INFO L471 AbstractCegarLoop]: Abstraction has 4691 states and 6807 transitions. [2024-12-02 09:03:25,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 09:03:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 6807 transitions. [2024-12-02 09:03:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 09:03:25,972 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:25,972 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, 1, 1] [2024-12-02 09:03:25,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 09:03:26,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:26,173 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:26,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:26,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1861102501, now seen corresponding path program 1 times [2024-12-02 09:03:26,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:26,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126714729] [2024-12-02 09:03:26,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:26,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:27,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126714729] [2024-12-02 09:03:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126714729] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:03:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270000601] [2024-12-02 09:03:27,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:27,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:27,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:03:27,086 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:03:27,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 09:03:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:27,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 09:03:27,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:03:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:29,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:03:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:32,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270000601] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:03:32,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:03:32,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 18] total 46 [2024-12-02 09:03:32,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467049267] [2024-12-02 09:03:32,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:03:32,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 09:03:32,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:32,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 09:03:32,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1791, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 09:03:32,031 INFO L87 Difference]: Start difference. First operand 4691 states and 6807 transitions. Second operand has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 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 09:03:44,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:44,700 INFO L93 Difference]: Finished difference Result 9442 states and 12790 transitions. [2024-12-02 09:03:44,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-12-02 09:03:44,701 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 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 09:03:44,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:44,732 INFO L225 Difference]: With dead ends: 9442 [2024-12-02 09:03:44,732 INFO L226 Difference]: Without dead ends: 7086 [2024-12-02 09:03:44,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4079 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=2799, Invalid=11007, Unknown=0, NotChecked=0, Total=13806 [2024-12-02 09:03:44,740 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 17535 mSDsluCounter, 20782 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17535 SdHoareTripleChecker+Valid, 22315 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:44,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17535 Valid, 22315 Invalid, 2337 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 09:03:44,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2024-12-02 09:03:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 5864. [2024-12-02 09:03:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5862 states have (on average 1.415899010576595) internal successors, (8300), 5863 states have internal predecessors, (8300), 0 states have call successors, (0), 0 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 09:03:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 8300 transitions. [2024-12-02 09:03:45,043 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 8300 transitions. Word has length 63 [2024-12-02 09:03:45,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:45,043 INFO L471 AbstractCegarLoop]: Abstraction has 5864 states and 8300 transitions. [2024-12-02 09:03:45,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 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 09:03:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 8300 transitions. [2024-12-02 09:03:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 09:03:45,050 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:45,050 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-12-02 09:03:45,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 09:03:45,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:45,251 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:45,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash 268330733, now seen corresponding path program 1 times [2024-12-02 09:03:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113781513] [2024-12-02 09:03:45,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:46,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:46,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113781513] [2024-12-02 09:03:46,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113781513] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:03:46,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085359213] [2024-12-02 09:03:46,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:03:46,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:03:46,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 09:03:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:46,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 09:03:46,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:03:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 09:03:46,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:03:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 09:03:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085359213] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:03:46,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:03:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 5] total 23 [2024-12-02 09:03:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506951058] [2024-12-02 09:03:46,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:03:46,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 09:03:46,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:46,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 09:03:46,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-12-02 09:03:46,685 INFO L87 Difference]: Start difference. First operand 5864 states and 8300 transitions. Second operand has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 09:03:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:50,385 INFO L93 Difference]: Finished difference Result 16206 states and 21014 transitions. [2024-12-02 09:03:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-12-02 09:03:50,385 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 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 09:03:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:50,401 INFO L225 Difference]: With dead ends: 16206 [2024-12-02 09:03:50,401 INFO L226 Difference]: Without dead ends: 12103 [2024-12-02 09:03:50,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3467 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1454, Invalid=9052, Unknown=0, NotChecked=0, Total=10506 [2024-12-02 09:03:50,406 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 15737 mSDsluCounter, 11556 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15737 SdHoareTripleChecker+Valid, 13130 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:50,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15737 Valid, 13130 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 09:03:50,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12103 states. [2024-12-02 09:03:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12103 to 9450. [2024-12-02 09:03:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9450 states, 9448 states have (on average 1.3178450465707028) internal successors, (12451), 9449 states have internal predecessors, (12451), 0 states have call successors, (0), 0 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 09:03:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9450 states to 9450 states and 12451 transitions. [2024-12-02 09:03:50,773 INFO L78 Accepts]: Start accepts. Automaton has 9450 states and 12451 transitions. Word has length 103 [2024-12-02 09:03:50,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:50,773 INFO L471 AbstractCegarLoop]: Abstraction has 9450 states and 12451 transitions. [2024-12-02 09:03:50,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 09:03:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 9450 states and 12451 transitions. [2024-12-02 09:03:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 09:03:50,775 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:50,775 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:50,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 09:03:50,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:50,976 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:50,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:50,976 INFO L85 PathProgramCache]: Analyzing trace with hash 159932591, now seen corresponding path program 1 times [2024-12-02 09:03:50,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:50,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126834558] [2024-12-02 09:03:50,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:50,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:52,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:52,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126834558] [2024-12-02 09:03:52,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126834558] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:03:52,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834710654] [2024-12-02 09:03:52,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:52,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:52,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:03:52,017 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:03:52,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 09:03:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:52,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 09:03:52,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:03:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:52,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:03:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:03:54,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834710654] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:03:54,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:03:54,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 38 [2024-12-02 09:03:54,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726748065] [2024-12-02 09:03:54,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:03:54,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 09:03:54,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:54,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 09:03:54,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 09:03:54,485 INFO L87 Difference]: Start difference. First operand 9450 states and 12451 transitions. Second operand has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 09:04:02,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:04:02,374 INFO L93 Difference]: Finished difference Result 24929 states and 31285 transitions. [2024-12-02 09:04:02,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-12-02 09:04:02,374 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 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 09:04:02,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:04:02,399 INFO L225 Difference]: With dead ends: 24929 [2024-12-02 09:04:02,399 INFO L226 Difference]: Without dead ends: 20056 [2024-12-02 09:04:02,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3517, Invalid=16789, Unknown=0, NotChecked=0, Total=20306 [2024-12-02 09:04:02,410 INFO L435 NwaCegarLoop]: 1605 mSDtfsCounter, 20869 mSDsluCounter, 24218 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20869 SdHoareTripleChecker+Valid, 25823 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 09:04:02,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20869 Valid, 25823 Invalid, 2557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [121 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 09:04:02,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20056 states. [2024-12-02 09:04:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20056 to 13040. [2024-12-02 09:04:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13040 states, 13038 states have (on average 1.281868384721583) internal successors, (16713), 13039 states have internal predecessors, (16713), 0 states have call successors, (0), 0 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 09:04:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13040 states to 13040 states and 16713 transitions. [2024-12-02 09:04:03,071 INFO L78 Accepts]: Start accepts. Automaton has 13040 states and 16713 transitions. Word has length 103 [2024-12-02 09:04:03,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:04:03,071 INFO L471 AbstractCegarLoop]: Abstraction has 13040 states and 16713 transitions. [2024-12-02 09:04:03,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 09:04:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 13040 states and 16713 transitions. [2024-12-02 09:04:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 09:04:03,074 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:04:03,074 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:03,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 09:04:03,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:04:03,274 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:04:03,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:04:03,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1648355578, now seen corresponding path program 1 times [2024-12-02 09:04:03,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:04:03,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647264863] [2024-12-02 09:04:03,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:04:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:04:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:04:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 09:04:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:04:04,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647264863] [2024-12-02 09:04:04,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647264863] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:04:04,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199593815] [2024-12-02 09:04:04,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:04:04,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:04:04,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:04:04,482 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:04:04,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 09:04:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:04:04,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 09:04:04,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:04:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:04:06,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:04:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:04:10,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199593815] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:04:10,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:04:10,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 22] total 60 [2024-12-02 09:04:10,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59746631] [2024-12-02 09:04:10,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:04:10,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 09:04:10,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:04:10,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 09:04:10,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=3185, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 09:04:10,442 INFO L87 Difference]: Start difference. First operand 13040 states and 16713 transitions. Second operand has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 09:04:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:04:45,958 INFO L93 Difference]: Finished difference Result 22307 states and 27883 transitions. [2024-12-02 09:04:45,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-12-02 09:04:45,959 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 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 09:04:45,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:04:45,971 INFO L225 Difference]: With dead ends: 22307 [2024-12-02 09:04:45,971 INFO L226 Difference]: Without dead ends: 18199 [2024-12-02 09:04:45,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14376 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=6621, Invalid=39819, Unknown=0, NotChecked=0, Total=46440 [2024-12-02 09:04:45,978 INFO L435 NwaCegarLoop]: 1643 mSDtfsCounter, 29233 mSDsluCounter, 36596 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29233 SdHoareTripleChecker+Valid, 38239 SdHoareTripleChecker+Invalid, 3626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:04:45,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29233 Valid, 38239 Invalid, 3626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [171 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 09:04:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18199 states. [2024-12-02 09:04:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18199 to 17286. [2024-12-02 09:04:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17286 states, 17284 states have (on average 1.2607613978245777) internal successors, (21791), 17285 states have internal predecessors, (21791), 0 states have call successors, (0), 0 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 09:04:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17286 states to 17286 states and 21791 transitions. [2024-12-02 09:04:46,719 INFO L78 Accepts]: Start accepts. Automaton has 17286 states and 21791 transitions. Word has length 104 [2024-12-02 09:04:46,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:04:46,719 INFO L471 AbstractCegarLoop]: Abstraction has 17286 states and 21791 transitions. [2024-12-02 09:04:46,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 09:04:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 17286 states and 21791 transitions. [2024-12-02 09:04:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 09:04:46,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:04:46,720 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 09:04:46,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 09:04:46,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:04:46,921 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:04:46,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:04:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1812137019, now seen corresponding path program 1 times [2024-12-02 09:04:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:04:46,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161963898] [2024-12-02 09:04:46,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:04:46,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:04:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:04:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:04:48,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:04:48,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161963898] [2024-12-02 09:04:48,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161963898] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:04:48,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979713357] [2024-12-02 09:04:48,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:04:48,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:04:48,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:04:48,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:04:48,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 09:04:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:04:48,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 09:04:48,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:04:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:04:49,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:04:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:04:51,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979713357] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:04:51,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:04:51,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 14] total 52 [2024-12-02 09:04:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389335244] [2024-12-02 09:04:51,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:04:51,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 09:04:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:04:51,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 09:04:51,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2470, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 09:04:51,462 INFO L87 Difference]: Start difference. First operand 17286 states and 21791 transitions. Second operand has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 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 09:05:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:05:15,205 INFO L93 Difference]: Finished difference Result 35774 states and 43999 transitions. [2024-12-02 09:05:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-12-02 09:05:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 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 09:05:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:05:15,222 INFO L225 Difference]: With dead ends: 35774 [2024-12-02 09:05:15,222 INFO L226 Difference]: Without dead ends: 25272 [2024-12-02 09:05:15,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14627 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=6723, Invalid=38859, Unknown=0, NotChecked=0, Total=45582 [2024-12-02 09:05:15,231 INFO L435 NwaCegarLoop]: 1685 mSDtfsCounter, 23393 mSDsluCounter, 44109 mSDsCounter, 0 mSdLazyCounter, 4785 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23393 SdHoareTripleChecker+Valid, 45794 SdHoareTripleChecker+Invalid, 4968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 4785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:05:15,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23393 Valid, 45794 Invalid, 4968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [183 Valid, 4785 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 09:05:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25272 states. [2024-12-02 09:05:16,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25272 to 20386. [2024-12-02 09:05:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20386 states, 20384 states have (on average 1.250245290423862) internal successors, (25485), 20385 states have internal predecessors, (25485), 0 states have call successors, (0), 0 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 09:05:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20386 states to 20386 states and 25485 transitions. [2024-12-02 09:05:16,408 INFO L78 Accepts]: Start accepts. Automaton has 20386 states and 25485 transitions. Word has length 105 [2024-12-02 09:05:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:05:16,408 INFO L471 AbstractCegarLoop]: Abstraction has 20386 states and 25485 transitions. [2024-12-02 09:05:16,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 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 09:05:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 20386 states and 25485 transitions. [2024-12-02 09:05:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 09:05:16,410 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:05:16,410 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 09:05:16,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 09:05:16,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 09:05:16,611 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:05:16,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:05:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash -867694025, now seen corresponding path program 1 times [2024-12-02 09:05:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:05:16,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183963488] [2024-12-02 09:05:16,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:05:16,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:05:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:05:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:05:17,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:05:17,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183963488] [2024-12-02 09:05:17,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183963488] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:05:17,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169493838] [2024-12-02 09:05:17,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:05:17,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:05:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:05:17,678 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:05:17,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 09:05:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:05:17,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 09:05:17,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:05:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:05:20,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:05:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:05:23,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169493838] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:05:23,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:05:23,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 52 [2024-12-02 09:05:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828710559] [2024-12-02 09:05:23,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:05:23,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 09:05:23,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:05:23,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 09:05:23,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2369, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 09:05:23,577 INFO L87 Difference]: Start difference. First operand 20386 states and 25485 transitions. Second operand has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 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 09:05:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:05:32,216 INFO L93 Difference]: Finished difference Result 33334 states and 41158 transitions. [2024-12-02 09:05:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 09:05:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 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 09:05:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:05:32,230 INFO L225 Difference]: With dead ends: 33334 [2024-12-02 09:05:32,230 INFO L226 Difference]: Without dead ends: 21937 [2024-12-02 09:05:32,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1719, Invalid=7787, Unknown=0, NotChecked=0, Total=9506 [2024-12-02 09:05:32,237 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 18730 mSDsluCounter, 29818 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18730 SdHoareTripleChecker+Valid, 31401 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 09:05:32,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18730 Valid, 31401 Invalid, 2150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 09:05:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21937 states. [2024-12-02 09:05:33,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21937 to 19240. [2024-12-02 09:05:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19240 states, 19238 states have (on average 1.246699241085352) internal successors, (23984), 19239 states have internal predecessors, (23984), 0 states have call successors, (0), 0 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 09:05:33,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19240 states to 19240 states and 23984 transitions. [2024-12-02 09:05:33,409 INFO L78 Accepts]: Start accepts. Automaton has 19240 states and 23984 transitions. Word has length 105 [2024-12-02 09:05:33,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:05:33,409 INFO L471 AbstractCegarLoop]: Abstraction has 19240 states and 23984 transitions. [2024-12-02 09:05:33,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 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 09:05:33,410 INFO L276 IsEmpty]: Start isEmpty. Operand 19240 states and 23984 transitions. [2024-12-02 09:05:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 09:05:33,411 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:05:33,411 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:05:33,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 09:05:33,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 09:05:33,611 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:05:33,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:05:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1706401868, now seen corresponding path program 1 times [2024-12-02 09:05:33,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:05:33,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459261384] [2024-12-02 09:05:33,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:05:33,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:05:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:05:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:05:35,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:05:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459261384] [2024-12-02 09:05:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459261384] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:05:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622312742] [2024-12-02 09:05:35,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:05:35,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:05:35,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:05:35,093 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:05:35,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 09:05:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:05:35,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 09:05:35,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:05:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:05:37,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:05:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:05:41,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622312742] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:05:41,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:05:41,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 19] total 61 [2024-12-02 09:05:41,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778445928] [2024-12-02 09:05:41,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:05:41,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 09:05:41,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:05:41,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 09:05:41,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3378, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 09:05:41,507 INFO L87 Difference]: Start difference. First operand 19240 states and 23984 transitions. Second operand has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 09:06:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:06:02,373 INFO L93 Difference]: Finished difference Result 40509 states and 49506 transitions. [2024-12-02 09:06:02,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-12-02 09:06:02,373 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 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 09:06:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:06:02,442 INFO L225 Difference]: With dead ends: 40509 [2024-12-02 09:06:02,442 INFO L226 Difference]: Without dead ends: 36054 [2024-12-02 09:06:02,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=5074, Invalid=28598, Unknown=0, NotChecked=0, Total=33672 [2024-12-02 09:06:02,447 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 22964 mSDsluCounter, 33891 mSDsCounter, 0 mSdLazyCounter, 3911 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22964 SdHoareTripleChecker+Valid, 35517 SdHoareTripleChecker+Invalid, 4029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:06:02,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22964 Valid, 35517 Invalid, 4029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 3911 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 09:06:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36054 states. [2024-12-02 09:06:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36054 to 21610. [2024-12-02 09:06:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21610 states, 21608 states have (on average 1.2395871899296558) internal successors, (26785), 21609 states have internal predecessors, (26785), 0 states have call successors, (0), 0 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 09:06:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21610 states to 21610 states and 26785 transitions. [2024-12-02 09:06:04,304 INFO L78 Accepts]: Start accepts. Automaton has 21610 states and 26785 transitions. Word has length 106 [2024-12-02 09:06:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:06:04,304 INFO L471 AbstractCegarLoop]: Abstraction has 21610 states and 26785 transitions. [2024-12-02 09:06:04,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 09:06:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 21610 states and 26785 transitions. [2024-12-02 09:06:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 09:06:04,306 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:06:04,306 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:06:04,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 09:06:04,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 09:06:04,507 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:06:04,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:06:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1230557169, now seen corresponding path program 1 times [2024-12-02 09:06:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:06:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649783945] [2024-12-02 09:06:04,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:06:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:06:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:06:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:06:05,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:06:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649783945] [2024-12-02 09:06:05,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649783945] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:06:05,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768337522] [2024-12-02 09:06:05,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:06:05,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:06:05,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:06:05,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:06:05,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 09:06:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:06:05,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 09:06:05,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:06:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:06:07,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:06:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:06:13,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768337522] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:06:13,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:06:13,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 23] total 64 [2024-12-02 09:06:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787276721] [2024-12-02 09:06:13,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:06:13,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 09:06:13,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:06:13,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 09:06:13,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 09:06:13,627 INFO L87 Difference]: Start difference. First operand 21610 states and 26785 transitions. Second operand has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 09:06:39,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:06:39,019 INFO L93 Difference]: Finished difference Result 46098 states and 56690 transitions. [2024-12-02 09:06:39,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-12-02 09:06:39,019 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 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 09:06:39,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:06:39,045 INFO L225 Difference]: With dead ends: 46098 [2024-12-02 09:06:39,045 INFO L226 Difference]: Without dead ends: 37558 [2024-12-02 09:06:39,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=4930, Invalid=24140, Unknown=0, NotChecked=0, Total=29070 [2024-12-02 09:06:39,053 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 33707 mSDsluCounter, 30443 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33707 SdHoareTripleChecker+Valid, 32023 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 09:06:39,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33707 Valid, 32023 Invalid, 2948 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [194 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 09:06:39,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37558 states. [2024-12-02 09:06:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37558 to 29330. [2024-12-02 09:06:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29330 states, 29328 states have (on average 1.234860883797054) internal successors, (36216), 29329 states have internal predecessors, (36216), 0 states have call successors, (0), 0 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 09:06:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29330 states to 29330 states and 36216 transitions. [2024-12-02 09:06:41,197 INFO L78 Accepts]: Start accepts. Automaton has 29330 states and 36216 transitions. Word has length 107 [2024-12-02 09:06:41,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:06:41,197 INFO L471 AbstractCegarLoop]: Abstraction has 29330 states and 36216 transitions. [2024-12-02 09:06:41,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 09:06:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 29330 states and 36216 transitions. [2024-12-02 09:06:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 09:06:41,198 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:06:41,198 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 09:06:41,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 09:06:41,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 09:06:41,399 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:06:41,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:06:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-12-02 09:06:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:06:41,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488140591] [2024-12-02 09:06:41,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:06:41,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:06:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:06:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:06:42,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:06:42,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488140591] [2024-12-02 09:06:42,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488140591] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:06:42,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417958074] [2024-12-02 09:06:42,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:06:42,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:06:42,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:06:42,477 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:06:42,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 09:06:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:06:42,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 09:06:42,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:06:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:06:44,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:06:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:06:45,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417958074] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:06:45,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:06:45,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 16] total 51 [2024-12-02 09:06:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130657986] [2024-12-02 09:06:45,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:06:45,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 09:06:45,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:06:45,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 09:06:45,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2319, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 09:06:45,987 INFO L87 Difference]: Start difference. First operand 29330 states and 36216 transitions. Second operand has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 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 09:06:59,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:06:59,274 INFO L93 Difference]: Finished difference Result 94881 states and 115979 transitions. [2024-12-02 09:06:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-12-02 09:06:59,275 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 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 09:06:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:06:59,332 INFO L225 Difference]: With dead ends: 94881 [2024-12-02 09:06:59,332 INFO L226 Difference]: Without dead ends: 70470 [2024-12-02 09:06:59,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4636 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3615, Invalid=13415, Unknown=0, NotChecked=0, Total=17030 [2024-12-02 09:06:59,348 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 21792 mSDsluCounter, 29295 mSDsCounter, 0 mSdLazyCounter, 3196 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21792 SdHoareTripleChecker+Valid, 30846 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 3196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:06:59,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21792 Valid, 30846 Invalid, 3294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 3196 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 09:06:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70470 states. [2024-12-02 09:07:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70470 to 40242. [2024-12-02 09:07:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40242 states, 40240 states have (on average 1.2277584493041749) internal successors, (49405), 40241 states have internal predecessors, (49405), 0 states have call successors, (0), 0 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 09:07:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40242 states to 40242 states and 49405 transitions. [2024-12-02 09:07:02,796 INFO L78 Accepts]: Start accepts. Automaton has 40242 states and 49405 transitions. Word has length 107 [2024-12-02 09:07:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:07:02,796 INFO L471 AbstractCegarLoop]: Abstraction has 40242 states and 49405 transitions. [2024-12-02 09:07:02,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 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 09:07:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 40242 states and 49405 transitions. [2024-12-02 09:07:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 09:07:02,798 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:07:02,798 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 09:07:02,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 09:07:02,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 09:07:02,998 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:07:02,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:07:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1782264045, now seen corresponding path program 1 times [2024-12-02 09:07:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:07:02,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121723183] [2024-12-02 09:07:02,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:07:02,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:07:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:07:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:03,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:07:03,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121723183] [2024-12-02 09:07:03,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121723183] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:07:03,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392643925] [2024-12-02 09:07:03,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:07:03,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:07:03,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:07:03,460 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:07:03,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 09:07:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:07:03,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 09:07:03,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:07:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 52 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:04,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:07:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:05,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392643925] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:07:05,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:07:05,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 35 [2024-12-02 09:07:05,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831630323] [2024-12-02 09:07:05,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:07:05,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 09:07:05,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:07:05,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 09:07:05,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 09:07:05,935 INFO L87 Difference]: Start difference. First operand 40242 states and 49405 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:07:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:07:13,400 INFO L93 Difference]: Finished difference Result 101466 states and 123045 transitions. [2024-12-02 09:07:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 09:07:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 09:07:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:07:13,456 INFO L225 Difference]: With dead ends: 101466 [2024-12-02 09:07:13,456 INFO L226 Difference]: Without dead ends: 68995 [2024-12-02 09:07:13,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=868, Invalid=3164, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 09:07:13,478 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 21183 mSDsluCounter, 15702 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21183 SdHoareTripleChecker+Valid, 17274 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 09:07:13,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21183 Valid, 17274 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 09:07:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68995 states. [2024-12-02 09:07:17,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68995 to 39312. [2024-12-02 09:07:17,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39312 states, 39310 states have (on average 1.2202238616128211) internal successors, (47967), 39311 states have internal predecessors, (47967), 0 states have call successors, (0), 0 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 09:07:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39312 states to 39312 states and 47967 transitions. [2024-12-02 09:07:17,076 INFO L78 Accepts]: Start accepts. Automaton has 39312 states and 47967 transitions. Word has length 107 [2024-12-02 09:07:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:07:17,076 INFO L471 AbstractCegarLoop]: Abstraction has 39312 states and 47967 transitions. [2024-12-02 09:07:17,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:07:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 39312 states and 47967 transitions. [2024-12-02 09:07:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 09:07:17,077 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:07:17,077 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 09:07:17,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 09:07:17,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 09:07:17,278 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:07:17,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:07:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1616506483, now seen corresponding path program 1 times [2024-12-02 09:07:17,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:07:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939031448] [2024-12-02 09:07:17,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:07:17,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:07:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:07:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:17,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:07:17,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939031448] [2024-12-02 09:07:17,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939031448] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:07:17,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38077537] [2024-12-02 09:07:17,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:07:17,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:07:17,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:07:17,732 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:07:17,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 09:07:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:07:17,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 09:07:17,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:07:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:18,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:07:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:20,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38077537] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:07:20,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:07:20,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 35 [2024-12-02 09:07:20,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181206951] [2024-12-02 09:07:20,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:07:20,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 09:07:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:07:20,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 09:07:20,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 09:07:20,117 INFO L87 Difference]: Start difference. First operand 39312 states and 47967 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:07:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:07:27,906 INFO L93 Difference]: Finished difference Result 89772 states and 108408 transitions. [2024-12-02 09:07:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 09:07:27,907 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 09:07:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:07:27,952 INFO L225 Difference]: With dead ends: 89772 [2024-12-02 09:07:27,952 INFO L226 Difference]: Without dead ends: 55057 [2024-12-02 09:07:27,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1412, Invalid=5068, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 09:07:27,969 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 26228 mSDsluCounter, 14316 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26228 SdHoareTripleChecker+Valid, 15877 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 09:07:27,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26228 Valid, 15877 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 09:07:27,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55057 states. [2024-12-02 09:07:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55057 to 35640. [2024-12-02 09:07:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35640 states, 35638 states have (on average 1.2250126269712105) internal successors, (43657), 35639 states have internal predecessors, (43657), 0 states have call successors, (0), 0 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 09:07:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35640 states to 35640 states and 43657 transitions. [2024-12-02 09:07:31,712 INFO L78 Accepts]: Start accepts. Automaton has 35640 states and 43657 transitions. Word has length 107 [2024-12-02 09:07:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:07:31,712 INFO L471 AbstractCegarLoop]: Abstraction has 35640 states and 43657 transitions. [2024-12-02 09:07:31,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:07:31,712 INFO L276 IsEmpty]: Start isEmpty. Operand 35640 states and 43657 transitions. [2024-12-02 09:07:31,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 09:07:31,713 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:07:31,713 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 09:07:31,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 09:07:31,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:07:31,914 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:07:31,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:07:31,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1360617744, now seen corresponding path program 1 times [2024-12-02 09:07:31,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:07:31,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665035432] [2024-12-02 09:07:31,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:07:31,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:07:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:07:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:33,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:07:33,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665035432] [2024-12-02 09:07:33,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665035432] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:07:33,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205422685] [2024-12-02 09:07:33,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:07:33,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:07:33,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:07:33,258 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:07:33,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 09:07:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:07:33,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 09:07:33,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:07:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:36,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:07:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:07:43,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205422685] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:07:43,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:07:43,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 25] total 66 [2024-12-02 09:07:43,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143778089] [2024-12-02 09:07:43,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:07:43,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 09:07:43,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:07:43,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 09:07:43,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3981, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 09:07:43,049 INFO L87 Difference]: Start difference. First operand 35640 states and 43657 transitions. Second operand has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 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 09:10:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:10:41,659 INFO L93 Difference]: Finished difference Result 156194 states and 187979 transitions. [2024-12-02 09:10:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2024-12-02 09:10:41,660 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 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 108 [2024-12-02 09:10:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:10:41,783 INFO L225 Difference]: With dead ends: 156194 [2024-12-02 09:10:41,783 INFO L226 Difference]: Without dead ends: 144867 [2024-12-02 09:10:41,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90463 ImplicationChecksByTransitivity, 154.4s TimeCoverageRelationStatistics Valid=34766, Invalid=164596, Unknown=0, NotChecked=0, Total=199362 [2024-12-02 09:10:41,809 INFO L435 NwaCegarLoop]: 1708 mSDtfsCounter, 43238 mSDsluCounter, 38347 mSDsCounter, 0 mSdLazyCounter, 9279 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43238 SdHoareTripleChecker+Valid, 40055 SdHoareTripleChecker+Invalid, 9555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 9279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-12-02 09:10:41,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43238 Valid, 40055 Invalid, 9555 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [276 Valid, 9279 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2024-12-02 09:10:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144867 states. [2024-12-02 09:10:46,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144867 to 36025. [2024-12-02 09:10:46,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36025 states, 36023 states have (on average 1.2251894622879826) internal successors, (44135), 36024 states have internal predecessors, (44135), 0 states have call successors, (0), 0 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 09:10:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36025 states to 36025 states and 44135 transitions. [2024-12-02 09:10:46,420 INFO L78 Accepts]: Start accepts. Automaton has 36025 states and 44135 transitions. Word has length 108 [2024-12-02 09:10:46,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:10:46,420 INFO L471 AbstractCegarLoop]: Abstraction has 36025 states and 44135 transitions. [2024-12-02 09:10:46,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 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 09:10:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 36025 states and 44135 transitions. [2024-12-02 09:10:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 09:10:46,421 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:10:46,421 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 09:10:46,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 09:10:46,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 09:10:46,622 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:10:46,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:10:46,622 INFO L85 PathProgramCache]: Analyzing trace with hash -516880752, now seen corresponding path program 1 times [2024-12-02 09:10:46,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:10:46,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704909030] [2024-12-02 09:10:46,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:10:46,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:10:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:10:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:10:48,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:10:48,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704909030] [2024-12-02 09:10:48,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704909030] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:10:48,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658945551] [2024-12-02 09:10:48,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:10:48,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:10:48,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:10:48,518 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:10:48,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 09:10:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:10:48,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 09:10:48,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:10:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:10:51,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:10:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:10:56,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658945551] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:10:56,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:10:56,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 22] total 69 [2024-12-02 09:10:56,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898218314] [2024-12-02 09:10:56,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:10:56,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 09:10:56,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:10:56,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 09:10:56,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=4295, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 09:10:56,108 INFO L87 Difference]: Start difference. First operand 36025 states and 44135 transitions. Second operand has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 09:13:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:13:07,477 INFO L93 Difference]: Finished difference Result 75632 states and 91480 transitions. [2024-12-02 09:13:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2024-12-02 09:13:07,478 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 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 09:13:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:13:07,521 INFO L225 Difference]: With dead ends: 75632 [2024-12-02 09:13:07,521 INFO L226 Difference]: Without dead ends: 56846 [2024-12-02 09:13:07,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76929 ImplicationChecksByTransitivity, 120.8s TimeCoverageRelationStatistics Valid=25310, Invalid=159160, Unknown=0, NotChecked=0, Total=184470 [2024-12-02 09:13:07,536 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 34327 mSDsluCounter, 46618 mSDsCounter, 0 mSdLazyCounter, 6093 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34327 SdHoareTripleChecker+Valid, 48219 SdHoareTripleChecker+Invalid, 6476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 6093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:13:07,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34327 Valid, 48219 Invalid, 6476 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [383 Valid, 6093 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 09:13:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56846 states. [2024-12-02 09:13:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56846 to 39019. [2024-12-02 09:13:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39019 states, 39017 states have (on average 1.2225183894199965) internal successors, (47699), 39018 states have internal predecessors, (47699), 0 states have call successors, (0), 0 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 09:13:12,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39019 states to 39019 states and 47699 transitions. [2024-12-02 09:13:12,490 INFO L78 Accepts]: Start accepts. Automaton has 39019 states and 47699 transitions. Word has length 108 [2024-12-02 09:13:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:13:12,490 INFO L471 AbstractCegarLoop]: Abstraction has 39019 states and 47699 transitions. [2024-12-02 09:13:12,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 09:13:12,491 INFO L276 IsEmpty]: Start isEmpty. Operand 39019 states and 47699 transitions. [2024-12-02 09:13:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 09:13:12,492 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:13:12,492 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 09:13:12,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 09:13:12,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 09:13:12,692 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:13:12,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:13:12,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1776170548, now seen corresponding path program 1 times [2024-12-02 09:13:12,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:13:12,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759456913] [2024-12-02 09:13:12,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:13:12,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:13:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:13:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:13:14,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:13:14,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759456913] [2024-12-02 09:13:14,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759456913] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:13:14,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900707991] [2024-12-02 09:13:14,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:13:14,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:13:14,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:13:14,207 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:13:14,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 09:13:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:13:14,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 09:13:14,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:13:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:13:19,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:13:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:13:26,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900707991] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:13:26,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:13:26,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 24] total 71 [2024-12-02 09:13:26,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021265169] [2024-12-02 09:13:26,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:13:26,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-12-02 09:13:26,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:13:26,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-12-02 09:13:26,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=4620, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 09:13:26,365 INFO L87 Difference]: Start difference. First operand 39019 states and 47699 transitions. Second operand has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 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 09:15:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:15:27,482 INFO L93 Difference]: Finished difference Result 80550 states and 97298 transitions. [2024-12-02 09:15:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2024-12-02 09:15:27,482 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 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 108 [2024-12-02 09:15:27,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:15:27,532 INFO L225 Difference]: With dead ends: 80550 [2024-12-02 09:15:27,532 INFO L226 Difference]: Without dead ends: 64919 [2024-12-02 09:15:27,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53007 ImplicationChecksByTransitivity, 108.9s TimeCoverageRelationStatistics Valid=21487, Invalid=106319, Unknown=0, NotChecked=0, Total=127806 [2024-12-02 09:15:27,546 INFO L435 NwaCegarLoop]: 1673 mSDtfsCounter, 35257 mSDsluCounter, 35407 mSDsCounter, 0 mSdLazyCounter, 6433 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35257 SdHoareTripleChecker+Valid, 37080 SdHoareTripleChecker+Invalid, 6728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 6433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-12-02 09:15:27,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35257 Valid, 37080 Invalid, 6728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [295 Valid, 6433 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-12-02 09:15:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64919 states. [2024-12-02 09:15:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64919 to 39031. [2024-12-02 09:15:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39031 states, 39029 states have (on average 1.22298803453842) internal successors, (47732), 39030 states have internal predecessors, (47732), 0 states have call successors, (0), 0 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 09:15:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39031 states to 39031 states and 47732 transitions. [2024-12-02 09:15:32,773 INFO L78 Accepts]: Start accepts. Automaton has 39031 states and 47732 transitions. Word has length 108 [2024-12-02 09:15:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:15:32,773 INFO L471 AbstractCegarLoop]: Abstraction has 39031 states and 47732 transitions. [2024-12-02 09:15:32,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 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 09:15:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 39031 states and 47732 transitions. [2024-12-02 09:15:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 09:15:32,775 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:15:32,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:15:32,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-02 09:15:32,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 09:15:32,975 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:15:32,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:15:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1573117275, now seen corresponding path program 1 times [2024-12-02 09:15:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:15:32,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18672648] [2024-12-02 09:15:32,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:15:32,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:15:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:15:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:15:33,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:15:33,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18672648] [2024-12-02 09:15:33,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18672648] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:15:33,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:15:33,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:15:33,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964329314] [2024-12-02 09:15:33,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:15:33,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 09:15:33,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:15:33,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 09:15:33,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:15:33,077 INFO L87 Difference]: Start difference. First operand 39031 states and 47732 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 09:15:43,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:15:43,802 INFO L93 Difference]: Finished difference Result 42788 states and 54730 transitions. [2024-12-02 09:15:43,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 09:15:43,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-12-02 09:15:43,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:15:43,836 INFO L225 Difference]: With dead ends: 42788 [2024-12-02 09:15:43,836 INFO L226 Difference]: Without dead ends: 41284 [2024-12-02 09:15:43,841 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 09:15:43,842 INFO L435 NwaCegarLoop]: 763 mSDtfsCounter, 2288 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 5968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-12-02 09:15:43,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 782 Invalid, 5968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-12-02 09:15:43,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41284 states. [2024-12-02 09:15:49,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41284 to 41284. [2024-12-02 09:15:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41284 states, 41282 states have (on average 1.2189816384865075) internal successors, (50322), 41283 states have internal predecessors, (50322), 0 states have call successors, (0), 0 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 09:15:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41284 states to 41284 states and 50322 transitions. [2024-12-02 09:15:49,072 INFO L78 Accepts]: Start accepts. Automaton has 41284 states and 50322 transitions. Word has length 121 [2024-12-02 09:15:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:15:49,072 INFO L471 AbstractCegarLoop]: Abstraction has 41284 states and 50322 transitions. [2024-12-02 09:15:49,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 09:15:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 41284 states and 50322 transitions. [2024-12-02 09:15:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 09:15:49,074 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:15:49,074 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 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] [2024-12-02 09:15:49,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 09:15:49,074 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:15:49,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:15:49,074 INFO L85 PathProgramCache]: Analyzing trace with hash -699853685, now seen corresponding path program 1 times [2024-12-02 09:15:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:15:49,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883597385] [2024-12-02 09:15:49,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:15:49,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:15:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:15:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 53 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:15:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:15:50,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883597385] [2024-12-02 09:15:50,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883597385] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:15:50,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983977316] [2024-12-02 09:15:50,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:15:50,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:15:50,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:15:50,155 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:15:50,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 09:15:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:15:50,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 09:15:50,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:15:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 82 proven. 144 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 09:15:51,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:15:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 53 proven. 173 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 09:15:53,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983977316] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:15:53,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:15:53,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 39 [2024-12-02 09:15:53,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11120730] [2024-12-02 09:15:53,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:15:53,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 09:15:53,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:15:53,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 09:15:53,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 09:15:53,470 INFO L87 Difference]: Start difference. First operand 41284 states and 50322 transitions. Second operand has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 0 states have call successors, (0), 0 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 09:16:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:16:07,483 INFO L93 Difference]: Finished difference Result 79939 states and 97162 transitions. [2024-12-02 09:16:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-12-02 09:16:07,483 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 0 states have call successors, (0), 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 09:16:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:16:07,529 INFO L225 Difference]: With dead ends: 79939 [2024-12-02 09:16:07,530 INFO L226 Difference]: Without dead ends: 62647 [2024-12-02 09:16:07,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4383 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3039, Invalid=12213, Unknown=0, NotChecked=0, Total=15252 [2024-12-02 09:16:07,542 INFO L435 NwaCegarLoop]: 1536 mSDtfsCounter, 26141 mSDsluCounter, 14394 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26141 SdHoareTripleChecker+Valid, 15930 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:16:07,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26141 Valid, 15930 Invalid, 1626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 09:16:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62647 states. [2024-12-02 09:16:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62647 to 36644. [2024-12-02 09:16:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36644 states, 36642 states have (on average 1.2113967578188964) internal successors, (44388), 36643 states have internal predecessors, (44388), 0 states have call successors, (0), 0 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 09:16:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36644 states to 36644 states and 44388 transitions. [2024-12-02 09:16:12,476 INFO L78 Accepts]: Start accepts. Automaton has 36644 states and 44388 transitions. Word has length 147 [2024-12-02 09:16:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:16:12,476 INFO L471 AbstractCegarLoop]: Abstraction has 36644 states and 44388 transitions. [2024-12-02 09:16:12,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 0 states have call successors, (0), 0 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 09:16:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 36644 states and 44388 transitions. [2024-12-02 09:16:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 09:16:12,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:16:12,478 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 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 09:16:12,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 09:16:12,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 09:16:12,679 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:16:12,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:16:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash -686891035, now seen corresponding path program 1 times [2024-12-02 09:16:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:16:12,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184683134] [2024-12-02 09:16:12,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:16:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:16:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:16:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 79 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:16:14,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:16:14,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184683134] [2024-12-02 09:16:14,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184683134] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:16:14,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553299379] [2024-12-02 09:16:14,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:16:14,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:16:14,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:16:14,100 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:16:14,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c71feeb-e817-45d9-9179-e2ec2d2d06ca/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 09:16:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:16:14,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 09:16:14,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:16:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 93 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:16:17,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:16:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 61 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:16:22,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553299379] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:16:22,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:16:22,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 20] total 67 [2024-12-02 09:16:22,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961215862] [2024-12-02 09:16:22,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:16:22,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 09:16:22,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:16:22,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 09:16:22,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=4035, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 09:16:22,853 INFO L87 Difference]: Start difference. First operand 36644 states and 44388 transitions. Second operand has 67 states, 67 states have (on average 5.82089552238806) internal successors, (390), 67 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)