./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i --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_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/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_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/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_ec1f0364-c231-4a24-a5b5-8c04a6676106/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 0d0248500070fcb488ef1ad28c8f201e8340587643ff9baf1ad195abca806e8b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:28:51,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:28:52,001 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:28:52,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:28:52,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:28:52,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:28:52,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:28:52,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:28:52,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:28:52,028 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:28:52,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:28:52,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:28:52,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:28:52,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:28:52,028 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:28:52,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:28:52,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:28:52,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:28:52,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:28:52,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:28:52,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:28:52,029 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:28:52,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:28:52,029 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:28:52,029 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:28:52,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:28:52,030 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:28:52,030 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:28:52,030 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:28:52,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:28:52,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:28:52,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:28:52,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:28:52,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:28:52,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:28:52,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:28:52,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:28:52,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:28:52,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:28:52,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:28:52,031 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:28:52,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:28:52,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:28:52,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:28:52,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:28:52,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:28:52,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:28:52,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:28:52,032 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_ec1f0364-c231-4a24-a5b5-8c04a6676106/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 -> 0d0248500070fcb488ef1ad28c8f201e8340587643ff9baf1ad195abca806e8b [2024-12-02 11:28:52,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:28:52,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:28:52,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:28:52,252 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:28:52,252 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:28:52,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i [2024-12-02 11:28:54,930 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/data/94a518b9e/a36675be87be48b6aae8360f67e96e3f/FLAG3234cba83 [2024-12-02 11:28:55,148 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:28:55,149 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i [2024-12-02 11:28:55,155 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/data/94a518b9e/a36675be87be48b6aae8360f67e96e3f/FLAG3234cba83 [2024-12-02 11:28:55,503 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/data/94a518b9e/a36675be87be48b6aae8360f67e96e3f [2024-12-02 11:28:55,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:28:55,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:28:55,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:28:55,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:28:55,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:28:55,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afd859a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55, skipping insertion in model container [2024-12-02 11:28:55,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,532 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:28:55,647 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_ec1f0364-c231-4a24-a5b5-8c04a6676106/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i[917,930] [2024-12-02 11:28:55,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:28:55,700 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:28:55,707 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_ec1f0364-c231-4a24-a5b5-8c04a6676106/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i[917,930] [2024-12-02 11:28:55,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:28:55,742 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:28:55,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55 WrapperNode [2024-12-02 11:28:55,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:28:55,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:28:55,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:28:55,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:28:55,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,781 INFO L138 Inliner]: procedures = 26, calls = 129, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 361 [2024-12-02 11:28:55,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:28:55,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:28:55,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:28:55,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:28:55,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,811 INFO L175 MemorySlicer]: Split 96 memory accesses to 5 slices as follows [2, 12, 32, 24, 26]. 33 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 4, 3, 3]. The 16 writes are split as follows [0, 2, 6, 4, 4]. [2024-12-02 11:28:55,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,821 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:28:55,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:28:55,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:28:55,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:28:55,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (1/1) ... [2024-12-02 11:28:55,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:28:55,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:28:55,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:28:55,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:28:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:28:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:28:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:28:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:28:55,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:28:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 11:28:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 11:28:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:28:55,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:28:55,978 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:28:55,980 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:28:56,329 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-12-02 11:28:56,329 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:28:56,339 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:28:56,340 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:28:56,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:28:56 BoogieIcfgContainer [2024-12-02 11:28:56,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:28:56,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:28:56,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:28:56,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:28:56,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:28:55" (1/3) ... [2024-12-02 11:28:56,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b06a917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:28:56, skipping insertion in model container [2024-12-02 11:28:56,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:28:55" (2/3) ... [2024-12-02 11:28:56,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b06a917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:28:56, skipping insertion in model container [2024-12-02 11:28:56,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:28:56" (3/3) ... [2024-12-02 11:28:56,349 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-59.i [2024-12-02 11:28:56,365 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:28:56,366 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-59.i that has 2 procedures, 84 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:28:56,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:28:56,433 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;@334b540d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:28:56,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:28:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 64 states have internal predecessors, (86), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-02 11:28:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 11:28:56,446 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:28:56,446 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:56,447 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:28:56,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:28:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1500553373, now seen corresponding path program 1 times [2024-12-02 11:28:56,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:28:56,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392701615] [2024-12-02 11:28:56,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:28:56,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:28:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:28:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-12-02 11:28:56,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:28:56,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392701615] [2024-12-02 11:28:56,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392701615] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:28:56,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664105053] [2024-12-02 11:28:56,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:28:56,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:28:56,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:28:56,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:28:56,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:28:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:28:56,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:28:56,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:28:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-12-02 11:28:56,970 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:28:56,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664105053] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:28:56,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:28:56,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:28:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680254657] [2024-12-02 11:28:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:28:56,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:28:56,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:28:56,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:28:56,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:28:56,993 INFO L87 Difference]: Start difference. First operand has 84 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 64 states have internal predecessors, (86), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:28:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:28:57,012 INFO L93 Difference]: Finished difference Result 161 states and 256 transitions. [2024-12-02 11:28:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:28:57,013 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2024-12-02 11:28:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:28:57,018 INFO L225 Difference]: With dead ends: 161 [2024-12-02 11:28:57,018 INFO L226 Difference]: Without dead ends: 80 [2024-12-02 11:28:57,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 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 11:28:57,023 INFO L435 NwaCegarLoop]: 115 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, 115 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 11:28:57,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:28:57,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-02 11:28:57,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-02 11:28:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 60 states have internal predecessors, (79), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-02 11:28:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2024-12-02 11:28:57,053 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 131 [2024-12-02 11:28:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:28:57,053 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2024-12-02 11:28:57,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:28:57,054 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2024-12-02 11:28:57,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 11:28:57,056 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:28:57,056 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:57,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:28:57,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:28:57,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:28:57,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:28:57,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1926669505, now seen corresponding path program 1 times [2024-12-02 11:28:57,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:28:57,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81241476] [2024-12-02 11:28:57,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:28:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:28:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:28:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:28:57,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:28:57,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81241476] [2024-12-02 11:28:57,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81241476] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:28:57,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:28:57,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:28:57,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104393173] [2024-12-02 11:28:57,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:28:57,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:28:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:28:57,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:28:57,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:28:57,734 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 11:28:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:28:57,974 INFO L93 Difference]: Finished difference Result 235 states and 340 transitions. [2024-12-02 11:28:57,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:28:57,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 131 [2024-12-02 11:28:57,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:28:57,976 INFO L225 Difference]: With dead ends: 235 [2024-12-02 11:28:57,977 INFO L226 Difference]: Without dead ends: 158 [2024-12-02 11:28:57,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:28:57,978 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 102 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:28:57,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 365 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:28:57,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-12-02 11:28:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 148. [2024-12-02 11:28:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 states have internal predecessors, (142), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:28:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 214 transitions. [2024-12-02 11:28:58,015 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 214 transitions. Word has length 131 [2024-12-02 11:28:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:28:58,016 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 214 transitions. [2024-12-02 11:28:58,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 11:28:58,016 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 214 transitions. [2024-12-02 11:28:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 11:28:58,018 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:28:58,018 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:58,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:28:58,019 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:28:58,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:28:58,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1794896017, now seen corresponding path program 1 times [2024-12-02 11:28:58,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:28:58,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713875835] [2024-12-02 11:28:58,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:28:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:28:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:28:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:28:58,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:28:58,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713875835] [2024-12-02 11:28:58,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713875835] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:28:58,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:28:58,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:28:58,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894773581] [2024-12-02 11:28:58,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:28:58,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:28:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:28:58,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:28:58,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:28:58,094 INFO L87 Difference]: Start difference. First operand 148 states and 214 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:28:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:28:58,117 INFO L93 Difference]: Finished difference Result 248 states and 363 transitions. [2024-12-02 11:28:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:28:58,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2024-12-02 11:28:58,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:28:58,120 INFO L225 Difference]: With dead ends: 248 [2024-12-02 11:28:58,120 INFO L226 Difference]: Without dead ends: 150 [2024-12-02 11:28:58,120 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 11:28:58,121 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:28:58,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:28:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-12-02 11:28:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-12-02 11:28:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 111 states have internal predecessors, (144), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 11:28:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 216 transitions. [2024-12-02 11:28:58,142 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 216 transitions. Word has length 133 [2024-12-02 11:28:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:28:58,142 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 216 transitions. [2024-12-02 11:28:58,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:28:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 216 transitions. [2024-12-02 11:28:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 11:28:58,144 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:28:58,145 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:58,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:28:58,145 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:28:58,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:28:58,146 INFO L85 PathProgramCache]: Analyzing trace with hash 505926573, now seen corresponding path program 1 times [2024-12-02 11:28:58,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:28:58,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246263112] [2024-12-02 11:28:58,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:28:58,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:28:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:28:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:28:58,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:28:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246263112] [2024-12-02 11:28:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246263112] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:28:58,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:28:58,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:28:58,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122737235] [2024-12-02 11:28:58,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:28:58,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:28:58,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:28:58,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:28:58,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:28:58,557 INFO L87 Difference]: Start difference. First operand 150 states and 216 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:28:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:28:58,769 INFO L93 Difference]: Finished difference Result 322 states and 467 transitions. [2024-12-02 11:28:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:28:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-12-02 11:28:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:28:58,773 INFO L225 Difference]: With dead ends: 322 [2024-12-02 11:28:58,773 INFO L226 Difference]: Without dead ends: 228 [2024-12-02 11:28:58,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:28:58,774 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 121 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:28:58,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 254 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:28:58,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-12-02 11:28:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2024-12-02 11:28:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 168 states have (on average 1.2976190476190477) internal successors, (218), 168 states have internal predecessors, (218), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 11:28:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 326 transitions. [2024-12-02 11:28:58,808 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 326 transitions. Word has length 133 [2024-12-02 11:28:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:28:58,808 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 326 transitions. [2024-12-02 11:28:58,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:28:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 326 transitions. [2024-12-02 11:28:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 11:28:58,810 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:28:58,811 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:58,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:28:58,811 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:28:58,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:28:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash -80879441, now seen corresponding path program 1 times [2024-12-02 11:28:58,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:28:58,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667037188] [2024-12-02 11:28:58,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:28:58,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:28:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:28:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:28:58,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:28:58,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667037188] [2024-12-02 11:28:58,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667037188] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:28:58,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:28:58,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:28:58,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088045621] [2024-12-02 11:28:58,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:28:58,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:28:58,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:28:58,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:28:58,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:28:58,984 INFO L87 Difference]: Start difference. First operand 226 states and 326 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:28:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:28:59,172 INFO L93 Difference]: Finished difference Result 460 states and 659 transitions. [2024-12-02 11:28:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:28:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2024-12-02 11:28:59,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:28:59,176 INFO L225 Difference]: With dead ends: 460 [2024-12-02 11:28:59,176 INFO L226 Difference]: Without dead ends: 293 [2024-12-02 11:28:59,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:28:59,177 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 81 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:28:59,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 309 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:28:59,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-12-02 11:28:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2024-12-02 11:28:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 215 states have (on average 1.2744186046511627) internal successors, (274), 216 states have internal predecessors, (274), 68 states have call successors, (68), 6 states have call predecessors, (68), 6 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 11:28:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 410 transitions. [2024-12-02 11:28:59,205 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 410 transitions. Word has length 133 [2024-12-02 11:28:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:28:59,206 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 410 transitions. [2024-12-02 11:28:59,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:28:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 410 transitions. [2024-12-02 11:28:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 11:28:59,207 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:28:59,208 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:59,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:28:59,208 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:28:59,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:28:59,208 INFO L85 PathProgramCache]: Analyzing trace with hash -473906451, now seen corresponding path program 1 times [2024-12-02 11:28:59,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:28:59,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281286853] [2024-12-02 11:28:59,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:28:59,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:28:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:28:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:28:59,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:28:59,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281286853] [2024-12-02 11:28:59,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281286853] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:28:59,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:28:59,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:28:59,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158869017] [2024-12-02 11:28:59,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:28:59,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:28:59,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:28:59,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:28:59,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:28:59,722 INFO L87 Difference]: Start difference. First operand 290 states and 410 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:00,082 INFO L93 Difference]: Finished difference Result 643 states and 908 transitions. [2024-12-02 11:29:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:29:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-12-02 11:29:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:00,086 INFO L225 Difference]: With dead ends: 643 [2024-12-02 11:29:00,086 INFO L226 Difference]: Without dead ends: 423 [2024-12-02 11:29:00,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:29:00,087 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 163 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:00,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 364 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:29:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-12-02 11:29:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2024-12-02 11:29:00,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 328 states have (on average 1.295731707317073) internal successors, (425), 332 states have internal predecessors, (425), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 11:29:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 585 transitions. [2024-12-02 11:29:00,127 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 585 transitions. Word has length 133 [2024-12-02 11:29:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:00,127 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 585 transitions. [2024-12-02 11:29:00,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 585 transitions. [2024-12-02 11:29:00,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 11:29:00,129 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:00,129 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:00,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:29:00,129 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:00,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash 206151919, now seen corresponding path program 1 times [2024-12-02 11:29:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:00,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880566692] [2024-12-02 11:29:00,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:00,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:00,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:00,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880566692] [2024-12-02 11:29:00,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880566692] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:00,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:00,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:29:00,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933899965] [2024-12-02 11:29:00,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:00,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:29:00,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:00,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:29:00,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:29:00,290 INFO L87 Difference]: Start difference. First operand 418 states and 585 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:00,492 INFO L93 Difference]: Finished difference Result 886 states and 1245 transitions. [2024-12-02 11:29:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:29:00,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-12-02 11:29:00,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:00,497 INFO L225 Difference]: With dead ends: 886 [2024-12-02 11:29:00,497 INFO L226 Difference]: Without dead ends: 537 [2024-12-02 11:29:00,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:29:00,498 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 102 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:00,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 392 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:29:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-12-02 11:29:00,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 435. [2024-12-02 11:29:00,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 345 states have (on average 1.2927536231884058) internal successors, (446), 349 states have internal predecessors, (446), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 11:29:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 606 transitions. [2024-12-02 11:29:00,543 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 606 transitions. Word has length 133 [2024-12-02 11:29:00,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:00,543 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 606 transitions. [2024-12-02 11:29:00,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 606 transitions. [2024-12-02 11:29:00,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 11:29:00,545 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:00,545 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:00,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:29:00,546 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:00,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash -215741013, now seen corresponding path program 1 times [2024-12-02 11:29:00,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:00,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216225664] [2024-12-02 11:29:00,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:00,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:00,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:00,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216225664] [2024-12-02 11:29:00,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216225664] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:00,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:00,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:29:00,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380856578] [2024-12-02 11:29:00,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:00,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:29:00,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:00,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:29:00,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:29:00,681 INFO L87 Difference]: Start difference. First operand 435 states and 606 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:00,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:00,890 INFO L93 Difference]: Finished difference Result 862 states and 1202 transitions. [2024-12-02 11:29:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:29:00,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-12-02 11:29:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:00,894 INFO L225 Difference]: With dead ends: 862 [2024-12-02 11:29:00,894 INFO L226 Difference]: Without dead ends: 503 [2024-12-02 11:29:00,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:29:00,895 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 104 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:00,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 393 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:29:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-12-02 11:29:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 417. [2024-12-02 11:29:00,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 327 states have (on average 1.2844036697247707) internal successors, (420), 331 states have internal predecessors, (420), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 11:29:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 580 transitions. [2024-12-02 11:29:00,961 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 580 transitions. Word has length 133 [2024-12-02 11:29:00,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:00,961 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 580 transitions. [2024-12-02 11:29:00,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:00,962 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 580 transitions. [2024-12-02 11:29:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-02 11:29:00,963 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:00,963 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:00,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:29:00,963 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:00,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1737620353, now seen corresponding path program 1 times [2024-12-02 11:29:00,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:00,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318530771] [2024-12-02 11:29:00,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:00,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:01,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318530771] [2024-12-02 11:29:01,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318530771] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:01,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:01,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:29:01,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327606876] [2024-12-02 11:29:01,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:01,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:29:01,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:01,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:29:01,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:29:01,335 INFO L87 Difference]: Start difference. First operand 417 states and 580 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:01,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:01,613 INFO L93 Difference]: Finished difference Result 1038 states and 1438 transitions. [2024-12-02 11:29:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:29:01,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 135 [2024-12-02 11:29:01,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:01,617 INFO L225 Difference]: With dead ends: 1038 [2024-12-02 11:29:01,617 INFO L226 Difference]: Without dead ends: 697 [2024-12-02 11:29:01,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:29:01,618 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 143 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:01,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 545 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:29:01,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-12-02 11:29:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 491. [2024-12-02 11:29:01,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 401 states have (on average 1.2892768079800498) internal successors, (517), 405 states have internal predecessors, (517), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 11:29:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 677 transitions. [2024-12-02 11:29:01,664 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 677 transitions. Word has length 135 [2024-12-02 11:29:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:01,664 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 677 transitions. [2024-12-02 11:29:01,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 677 transitions. [2024-12-02 11:29:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 11:29:01,665 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:01,665 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:01,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:29:01,665 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:01,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 5422576, now seen corresponding path program 1 times [2024-12-02 11:29:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:01,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676646657] [2024-12-02 11:29:01,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:01,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:29:01,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105355398] [2024-12-02 11:29:01,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:01,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:01,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:29:01,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:29:01,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:29:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:01,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 11:29:01,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:29:03,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:29:03,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:29:04,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-12-02 11:29:04,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2024-12-02 11:29:04,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:29:04,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2024-12-02 11:29:04,858 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-12-02 11:29:04,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:29:04,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2024-12-02 11:29:04,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2024-12-02 11:29:09,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:09,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676646657] [2024-12-02 11:29:09,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:29:09,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105355398] [2024-12-02 11:29:09,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105355398] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:29:09,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:29:09,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-12-02 11:29:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49623443] [2024-12-02 11:29:09,298 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 11:29:09,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:29:09,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:09,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:29:09,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=139, Unknown=1, NotChecked=0, Total=182 [2024-12-02 11:29:09,299 INFO L87 Difference]: Start difference. First operand 491 states and 677 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:10,176 INFO L93 Difference]: Finished difference Result 930 states and 1283 transitions. [2024-12-02 11:29:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:29:10,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2024-12-02 11:29:10,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:10,180 INFO L225 Difference]: With dead ends: 930 [2024-12-02 11:29:10,180 INFO L226 Difference]: Without dead ends: 520 [2024-12-02 11:29:10,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=93, Invalid=248, Unknown=1, NotChecked=0, Total=342 [2024-12-02 11:29:10,182 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 109 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:10,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 578 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:29:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-12-02 11:29:10,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 491. [2024-12-02 11:29:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 401 states have (on average 1.286783042394015) internal successors, (516), 405 states have internal predecessors, (516), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 11:29:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 676 transitions. [2024-12-02 11:29:10,217 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 676 transitions. Word has length 136 [2024-12-02 11:29:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:10,218 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 676 transitions. [2024-12-02 11:29:10,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 676 transitions. [2024-12-02 11:29:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 11:29:10,219 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:10,219 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:10,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 11:29:10,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:10,419 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:10,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:10,420 INFO L85 PathProgramCache]: Analyzing trace with hash 312298948, now seen corresponding path program 1 times [2024-12-02 11:29:10,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:10,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769507878] [2024-12-02 11:29:10,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:10,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:29:10,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107116291] [2024-12-02 11:29:10,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:10,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:10,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:29:10,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:29:10,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:29:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:10,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 11:29:10,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:29:10,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-12-02 11:29:12,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:29:12,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:29:12,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-12-02 11:29:13,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:29:13,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:29:13,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-12-02 11:29:13,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:29:13,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2024-12-02 11:29:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-12-02 11:29:13,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:29:13,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2024-12-02 11:29:13,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2024-12-02 11:29:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769507878] [2024-12-02 11:29:25,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:29:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107116291] [2024-12-02 11:29:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107116291] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:29:25,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:29:25,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-12-02 11:29:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353310517] [2024-12-02 11:29:25,825 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 11:29:25,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:29:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:25,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:29:25,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=138, Unknown=3, NotChecked=0, Total=182 [2024-12-02 11:29:25,826 INFO L87 Difference]: Start difference. First operand 491 states and 676 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:26,735 INFO L93 Difference]: Finished difference Result 927 states and 1278 transitions. [2024-12-02 11:29:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:29:26,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 137 [2024-12-02 11:29:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:26,739 INFO L225 Difference]: With dead ends: 927 [2024-12-02 11:29:26,739 INFO L226 Difference]: Without dead ends: 515 [2024-12-02 11:29:26,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=92, Invalid=247, Unknown=3, NotChecked=0, Total=342 [2024-12-02 11:29:26,740 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 148 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:26,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 471 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:29:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-12-02 11:29:26,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 491. [2024-12-02 11:29:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 401 states have (on average 1.28428927680798) internal successors, (515), 405 states have internal predecessors, (515), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 11:29:26,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 675 transitions. [2024-12-02 11:29:26,793 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 675 transitions. Word has length 137 [2024-12-02 11:29:26,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:26,793 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 675 transitions. [2024-12-02 11:29:26,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 11:29:26,793 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 675 transitions. [2024-12-02 11:29:26,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 11:29:26,794 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:26,794 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:26,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:29:26,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:26,995 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:26,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:26,995 INFO L85 PathProgramCache]: Analyzing trace with hash 339308277, now seen corresponding path program 1 times [2024-12-02 11:29:26,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:26,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754562985] [2024-12-02 11:29:26,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:26,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:28,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:28,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754562985] [2024-12-02 11:29:28,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754562985] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:28,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:28,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:29:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917372064] [2024-12-02 11:29:28,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:28,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:29:28,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:28,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:29:28,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:29:28,129 INFO L87 Difference]: Start difference. First operand 491 states and 675 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:28,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:28,677 INFO L93 Difference]: Finished difference Result 1181 states and 1623 transitions. [2024-12-02 11:29:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:29:28,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-12-02 11:29:28,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:28,681 INFO L225 Difference]: With dead ends: 1181 [2024-12-02 11:29:28,681 INFO L226 Difference]: Without dead ends: 778 [2024-12-02 11:29:28,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:29:28,682 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 122 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:28,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 748 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:29:28,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-12-02 11:29:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 561. [2024-12-02 11:29:28,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 471 states have (on average 1.29723991507431) internal successors, (611), 475 states have internal predecessors, (611), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 11:29:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 771 transitions. [2024-12-02 11:29:28,724 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 771 transitions. Word has length 138 [2024-12-02 11:29:28,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:28,725 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 771 transitions. [2024-12-02 11:29:28,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 771 transitions. [2024-12-02 11:29:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 11:29:28,726 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:28,726 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:28,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 11:29:28,727 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:28,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1019366647, now seen corresponding path program 1 times [2024-12-02 11:29:28,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:28,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237329038] [2024-12-02 11:29:28,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:28,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:28,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:28,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237329038] [2024-12-02 11:29:28,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237329038] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:28,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:28,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:29:28,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323817427] [2024-12-02 11:29:28,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:28,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:29:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:28,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:29:28,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:29:28,960 INFO L87 Difference]: Start difference. First operand 561 states and 771 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:29,213 INFO L93 Difference]: Finished difference Result 1094 states and 1511 transitions. [2024-12-02 11:29:29,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:29:29,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-12-02 11:29:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:29,215 INFO L225 Difference]: With dead ends: 1094 [2024-12-02 11:29:29,215 INFO L226 Difference]: Without dead ends: 624 [2024-12-02 11:29:29,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:29:29,217 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 137 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:29,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 371 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:29:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-12-02 11:29:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 561. [2024-12-02 11:29:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 471 states have (on average 1.2887473460721868) internal successors, (607), 475 states have internal predecessors, (607), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 11:29:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 767 transitions. [2024-12-02 11:29:29,260 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 767 transitions. Word has length 138 [2024-12-02 11:29:29,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:29,261 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 767 transitions. [2024-12-02 11:29:29,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:29,261 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 767 transitions. [2024-12-02 11:29:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 11:29:29,262 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:29,262 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:29,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 11:29:29,263 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:29,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1349635465, now seen corresponding path program 1 times [2024-12-02 11:29:29,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:29,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267181615] [2024-12-02 11:29:29,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:29,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:29,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267181615] [2024-12-02 11:29:29,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267181615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:29,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:29,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:29:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737563267] [2024-12-02 11:29:29,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:29,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:29:29,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:29,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:29:29,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:29:29,486 INFO L87 Difference]: Start difference. First operand 561 states and 767 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:29,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:29,771 INFO L93 Difference]: Finished difference Result 1088 states and 1501 transitions. [2024-12-02 11:29:29,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:29:29,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-12-02 11:29:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:29,774 INFO L225 Difference]: With dead ends: 1088 [2024-12-02 11:29:29,774 INFO L226 Difference]: Without dead ends: 618 [2024-12-02 11:29:29,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:29:29,776 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 109 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:29,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 409 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:29:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-12-02 11:29:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 564. [2024-12-02 11:29:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 474 states have (on average 1.2784810126582278) internal successors, (606), 478 states have internal predecessors, (606), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 11:29:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 766 transitions. [2024-12-02 11:29:29,816 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 766 transitions. Word has length 138 [2024-12-02 11:29:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:29,816 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 766 transitions. [2024-12-02 11:29:29,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 766 transitions. [2024-12-02 11:29:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 11:29:29,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:29,818 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:29,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 11:29:29,818 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:29,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:29,819 INFO L85 PathProgramCache]: Analyzing trace with hash -669577095, now seen corresponding path program 1 times [2024-12-02 11:29:29,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:29,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342165113] [2024-12-02 11:29:29,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:29,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:30,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342165113] [2024-12-02 11:29:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342165113] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:30,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:30,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:29:30,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714035707] [2024-12-02 11:29:30,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:30,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:29:30,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:30,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:29:30,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:29:30,082 INFO L87 Difference]: Start difference. First operand 564 states and 766 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:30,389 INFO L93 Difference]: Finished difference Result 1152 states and 1564 transitions. [2024-12-02 11:29:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:29:30,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-12-02 11:29:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:30,393 INFO L225 Difference]: With dead ends: 1152 [2024-12-02 11:29:30,393 INFO L226 Difference]: Without dead ends: 687 [2024-12-02 11:29:30,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:29:30,395 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 109 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:30,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 782 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:29:30,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-12-02 11:29:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 476. [2024-12-02 11:29:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 398 states have (on average 1.2688442211055277) internal successors, (505), 399 states have internal predecessors, (505), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 11:29:30,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 641 transitions. [2024-12-02 11:29:30,456 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 641 transitions. Word has length 138 [2024-12-02 11:29:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:30,456 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 641 transitions. [2024-12-02 11:29:30,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:30,456 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 641 transitions. [2024-12-02 11:29:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 11:29:30,458 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:30,458 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:30,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 11:29:30,458 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:30,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1941985744, now seen corresponding path program 1 times [2024-12-02 11:29:30,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:30,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240441032] [2024-12-02 11:29:30,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:30,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:30,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:30,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240441032] [2024-12-02 11:29:30,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240441032] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:30,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:30,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:29:30,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669806143] [2024-12-02 11:29:30,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:30,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:29:30,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:30,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:29:30,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:29:30,515 INFO L87 Difference]: Start difference. First operand 476 states and 641 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:30,576 INFO L93 Difference]: Finished difference Result 861 states and 1173 transitions. [2024-12-02 11:29:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:29:30,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2024-12-02 11:29:30,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:30,579 INFO L225 Difference]: With dead ends: 861 [2024-12-02 11:29:30,579 INFO L226 Difference]: Without dead ends: 480 [2024-12-02 11:29:30,580 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 11:29:30,581 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:30,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:29:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-12-02 11:29:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2024-12-02 11:29:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 402 states have (on average 1.2661691542288558) internal successors, (509), 403 states have internal predecessors, (509), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 11:29:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 645 transitions. [2024-12-02 11:29:30,638 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 645 transitions. Word has length 140 [2024-12-02 11:29:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:30,638 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 645 transitions. [2024-12-02 11:29:30,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:30,639 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 645 transitions. [2024-12-02 11:29:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 11:29:30,640 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:30,640 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:30,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 11:29:30,640 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:30,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:30,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1543634926, now seen corresponding path program 1 times [2024-12-02 11:29:30,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:30,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680005540] [2024-12-02 11:29:30,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:30,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-12-02 11:29:30,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:30,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680005540] [2024-12-02 11:29:30,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680005540] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:29:30,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981772214] [2024-12-02 11:29:30,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:30,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:30,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:29:30,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:29:30,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:29:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:31,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:29:31,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:29:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:31,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:29:31,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981772214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:31,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:29:31,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2024-12-02 11:29:31,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664047794] [2024-12-02 11:29:31,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:31,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:29:31,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:31,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:29:31,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:29:31,116 INFO L87 Difference]: Start difference. First operand 480 states and 645 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:31,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:31,193 INFO L93 Difference]: Finished difference Result 497 states and 664 transitions. [2024-12-02 11:29:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:29:31,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2024-12-02 11:29:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:31,196 INFO L225 Difference]: With dead ends: 497 [2024-12-02 11:29:31,196 INFO L226 Difference]: Without dead ends: 495 [2024-12-02 11:29:31,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:29:31,197 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:31,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 648 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:29:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-12-02 11:29:31,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2024-12-02 11:29:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 417 states have (on average 1.2565947242206235) internal successors, (524), 418 states have internal predecessors, (524), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 11:29:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 660 transitions. [2024-12-02 11:29:31,258 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 660 transitions. Word has length 140 [2024-12-02 11:29:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:31,258 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 660 transitions. [2024-12-02 11:29:31,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 660 transitions. [2024-12-02 11:29:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 11:29:31,260 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:31,260 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:31,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:29:31,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 11:29:31,460 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:31,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1924751351, now seen corresponding path program 1 times [2024-12-02 11:29:31,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:31,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513244476] [2024-12-02 11:29:31,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:31,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-12-02 11:29:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513244476] [2024-12-02 11:29:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513244476] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:29:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785597793] [2024-12-02 11:29:31,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:31,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:31,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:29:31,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:29:31,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:29:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:31,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:29:31,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:29:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 11:29:31,939 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:29:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785597793] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:31,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:29:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-12-02 11:29:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724705695] [2024-12-02 11:29:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:31,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:29:31,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:31,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:29:31,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:29:31,940 INFO L87 Difference]: Start difference. First operand 495 states and 660 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:32,029 INFO L93 Difference]: Finished difference Result 515 states and 682 transitions. [2024-12-02 11:29:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:29:32,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2024-12-02 11:29:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:32,032 INFO L225 Difference]: With dead ends: 515 [2024-12-02 11:29:32,032 INFO L226 Difference]: Without dead ends: 513 [2024-12-02 11:29:32,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:29:32,033 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:32,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 749 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:29:32,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-12-02 11:29:32,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 498. [2024-12-02 11:29:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 420 states have (on average 1.2547619047619047) internal successors, (527), 421 states have internal predecessors, (527), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 11:29:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 663 transitions. [2024-12-02 11:29:32,105 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 663 transitions. Word has length 142 [2024-12-02 11:29:32,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:32,106 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 663 transitions. [2024-12-02 11:29:32,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 663 transitions. [2024-12-02 11:29:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-12-02 11:29:32,108 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:32,108 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:29:32,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 11:29:32,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 11:29:32,309 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:32,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash 746538535, now seen corresponding path program 1 times [2024-12-02 11:29:32,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:32,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928769025] [2024-12-02 11:29:32,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:32,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-12-02 11:29:32,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:32,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928769025] [2024-12-02 11:29:32,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928769025] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:32,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:32,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:29:32,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876270027] [2024-12-02 11:29:32,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:32,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:29:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:32,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:29:32,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:29:32,566 INFO L87 Difference]: Start difference. First operand 498 states and 663 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:32,702 INFO L93 Difference]: Finished difference Result 814 states and 1094 transitions. [2024-12-02 11:29:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:29:32,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 268 [2024-12-02 11:29:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:32,705 INFO L225 Difference]: With dead ends: 814 [2024-12-02 11:29:32,705 INFO L226 Difference]: Without dead ends: 542 [2024-12-02 11:29:32,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:29:32,706 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 35 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:32,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 470 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:29:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-12-02 11:29:32,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 498. [2024-12-02 11:29:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 420 states have (on average 1.2547619047619047) internal successors, (527), 421 states have internal predecessors, (527), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 11:29:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 663 transitions. [2024-12-02 11:29:32,765 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 663 transitions. Word has length 268 [2024-12-02 11:29:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:32,765 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 663 transitions. [2024-12-02 11:29:32,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 663 transitions. [2024-12-02 11:29:32,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-12-02 11:29:32,767 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:32,767 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:29:32,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 11:29:32,768 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:32,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:32,768 INFO L85 PathProgramCache]: Analyzing trace with hash 324645603, now seen corresponding path program 1 times [2024-12-02 11:29:32,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:32,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455034117] [2024-12-02 11:29:32,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:32,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-12-02 11:29:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455034117] [2024-12-02 11:29:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455034117] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:33,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:33,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:29:33,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426470096] [2024-12-02 11:29:33,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:33,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:29:33,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:33,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:29:33,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:29:33,012 INFO L87 Difference]: Start difference. First operand 498 states and 663 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:33,120 INFO L93 Difference]: Finished difference Result 814 states and 1094 transitions. [2024-12-02 11:29:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:29:33,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 268 [2024-12-02 11:29:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:33,123 INFO L225 Difference]: With dead ends: 814 [2024-12-02 11:29:33,123 INFO L226 Difference]: Without dead ends: 542 [2024-12-02 11:29:33,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:29:33,124 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 33 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:33,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 459 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:29:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-12-02 11:29:33,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 501. [2024-12-02 11:29:33,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 423 states have (on average 1.2529550827423168) internal successors, (530), 424 states have internal predecessors, (530), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 11:29:33,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 666 transitions. [2024-12-02 11:29:33,161 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 666 transitions. Word has length 268 [2024-12-02 11:29:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:33,162 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 666 transitions. [2024-12-02 11:29:33,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:33,162 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 666 transitions. [2024-12-02 11:29:33,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-12-02 11:29:33,163 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:33,163 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:29:33,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 11:29:33,164 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:33,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1004703973, now seen corresponding path program 1 times [2024-12-02 11:29:33,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:33,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799693943] [2024-12-02 11:29:33,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:33,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 2548 trivial. 0 not checked. [2024-12-02 11:29:33,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:33,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799693943] [2024-12-02 11:29:33,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799693943] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:29:33,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113004413] [2024-12-02 11:29:33,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:33,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:33,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:29:33,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:29:33,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:29:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:33,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 11:29:33,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:29:35,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:29:36,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:29:36,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2024-12-02 11:29:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 5 proven. 744 refuted. 0 times theorem prover too weak. 1826 trivial. 0 not checked. [2024-12-02 11:29:36,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:29:36,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-12-02 11:29:36,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113004413] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:29:36,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:29:36,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-12-02 11:29:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014619431] [2024-12-02 11:29:36,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:29:36,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:29:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:36,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:29:36,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:29:36,153 INFO L87 Difference]: Start difference. First operand 501 states and 666 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2024-12-02 11:29:36,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:36,528 INFO L93 Difference]: Finished difference Result 1142 states and 1527 transitions. [2024-12-02 11:29:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:29:36,529 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 268 [2024-12-02 11:29:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:36,532 INFO L225 Difference]: With dead ends: 1142 [2024-12-02 11:29:36,532 INFO L226 Difference]: Without dead ends: 737 [2024-12-02 11:29:36,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:29:36,534 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 194 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:36,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 516 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:29:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-12-02 11:29:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 732. [2024-12-02 11:29:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 612 states have (on average 1.238562091503268) internal successors, (758), 616 states have internal predecessors, (758), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-12-02 11:29:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 966 transitions. [2024-12-02 11:29:36,645 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 966 transitions. Word has length 268 [2024-12-02 11:29:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:36,645 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 966 transitions. [2024-12-02 11:29:36,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2024-12-02 11:29:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 966 transitions. [2024-12-02 11:29:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-12-02 11:29:36,647 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:36,648 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:29:36,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 11:29:36,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:36,848 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:36,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash -68381407, now seen corresponding path program 1 times [2024-12-02 11:29:36,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:36,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544209701] [2024-12-02 11:29:36,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:36,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-12-02 11:29:37,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:37,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544209701] [2024-12-02 11:29:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544209701] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:37,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:37,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:29:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10737590] [2024-12-02 11:29:37,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:37,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:29:37,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:37,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:29:37,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:29:37,089 INFO L87 Difference]: Start difference. First operand 732 states and 966 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:37,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:37,235 INFO L93 Difference]: Finished difference Result 1157 states and 1533 transitions. [2024-12-02 11:29:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:29:37,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 268 [2024-12-02 11:29:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:37,239 INFO L225 Difference]: With dead ends: 1157 [2024-12-02 11:29:37,239 INFO L226 Difference]: Without dead ends: 725 [2024-12-02 11:29:37,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:29:37,241 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 31 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:37,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 591 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:29:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-12-02 11:29:37,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 720. [2024-12-02 11:29:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 600 states have (on average 1.2283333333333333) internal successors, (737), 604 states have internal predecessors, (737), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-12-02 11:29:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 945 transitions. [2024-12-02 11:29:37,298 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 945 transitions. Word has length 268 [2024-12-02 11:29:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:37,299 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 945 transitions. [2024-12-02 11:29:37,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 945 transitions. [2024-12-02 11:29:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-12-02 11:29:37,300 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:37,300 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:29:37,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 11:29:37,300 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:37,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash 67570773, now seen corresponding path program 1 times [2024-12-02 11:29:37,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:37,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094052244] [2024-12-02 11:29:37,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:37,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2024-12-02 11:29:37,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:37,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094052244] [2024-12-02 11:29:37,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094052244] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:37,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:37,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:29:37,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550231190] [2024-12-02 11:29:37,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:37,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:29:37,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:37,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:29:37,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:29:37,426 INFO L87 Difference]: Start difference. First operand 720 states and 945 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:37,537 INFO L93 Difference]: Finished difference Result 1433 states and 1876 transitions. [2024-12-02 11:29:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:29:37,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2024-12-02 11:29:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:37,540 INFO L225 Difference]: With dead ends: 1433 [2024-12-02 11:29:37,540 INFO L226 Difference]: Without dead ends: 809 [2024-12-02 11:29:37,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:29:37,542 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 44 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:37,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 446 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:29:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-12-02 11:29:37,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 699. [2024-12-02 11:29:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 579 states have (on average 1.2158894645941278) internal successors, (704), 583 states have internal predecessors, (704), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-12-02 11:29:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 912 transitions. [2024-12-02 11:29:37,601 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 912 transitions. Word has length 270 [2024-12-02 11:29:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:37,601 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 912 transitions. [2024-12-02 11:29:37,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 912 transitions. [2024-12-02 11:29:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-12-02 11:29:37,603 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:37,603 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:29:37,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 11:29:37,603 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:37,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash -354322159, now seen corresponding path program 1 times [2024-12-02 11:29:37,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:37,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418604959] [2024-12-02 11:29:37,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:37,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2024-12-02 11:29:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:37,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418604959] [2024-12-02 11:29:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418604959] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:37,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:37,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:29:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323056197] [2024-12-02 11:29:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:37,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:29:37,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:37,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:29:37,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:29:37,736 INFO L87 Difference]: Start difference. First operand 699 states and 912 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:37,826 INFO L93 Difference]: Finished difference Result 1292 states and 1689 transitions. [2024-12-02 11:29:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:29:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2024-12-02 11:29:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:37,829 INFO L225 Difference]: With dead ends: 1292 [2024-12-02 11:29:37,829 INFO L226 Difference]: Without dead ends: 689 [2024-12-02 11:29:37,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:29:37,830 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 28 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:37,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 409 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:29:37,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-12-02 11:29:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 687. [2024-12-02 11:29:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 567 states have (on average 1.1957671957671958) internal successors, (678), 571 states have internal predecessors, (678), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-12-02 11:29:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 886 transitions. [2024-12-02 11:29:37,888 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 886 transitions. Word has length 270 [2024-12-02 11:29:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:37,889 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 886 transitions. [2024-12-02 11:29:37,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 886 transitions. [2024-12-02 11:29:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 11:29:37,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:37,890 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:29:37,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 11:29:37,890 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:37,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash 539498296, now seen corresponding path program 1 times [2024-12-02 11:29:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:37,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294661336] [2024-12-02 11:29:37,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:29:38,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389007710] [2024-12-02 11:29:38,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:38,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:38,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:29:38,005 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:29:38,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:29:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:38,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 11:29:38,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:29:38,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-12-02 11:29:41,118 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-12-02 11:29:41,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-12-02 11:29:41,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-12-02 11:29:42,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:29:42,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:29:43,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-12-02 11:29:43,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:29:43,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:29:43,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2024-12-02 11:29:43,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:29:43,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2024-12-02 11:29:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 6 proven. 1634 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2024-12-02 11:29:43,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:29:43,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2024-12-02 11:29:43,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2024-12-02 11:29:51,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294661336] [2024-12-02 11:29:51,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:29:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389007710] [2024-12-02 11:29:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389007710] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:29:51,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:29:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-12-02 11:29:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115789339] [2024-12-02 11:29:51,792 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 11:29:51,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:29:51,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:51,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:29:51,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=115, Unknown=2, NotChecked=0, Total=156 [2024-12-02 11:29:51,793 INFO L87 Difference]: Start difference. First operand 687 states and 886 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-12-02 11:29:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:52,357 INFO L93 Difference]: Finished difference Result 1422 states and 1828 transitions. [2024-12-02 11:29:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:29:52,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 271 [2024-12-02 11:29:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:52,360 INFO L225 Difference]: With dead ends: 1422 [2024-12-02 11:29:52,360 INFO L226 Difference]: Without dead ends: 831 [2024-12-02 11:29:52,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 280 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=69, Invalid=169, Unknown=2, NotChecked=0, Total=240 [2024-12-02 11:29:52,361 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 95 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:52,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 380 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:29:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-12-02 11:29:52,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 687. [2024-12-02 11:29:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 567 states have (on average 1.1746031746031746) internal successors, (666), 571 states have internal predecessors, (666), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-12-02 11:29:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 874 transitions. [2024-12-02 11:29:52,435 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 874 transitions. Word has length 271 [2024-12-02 11:29:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:52,435 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 874 transitions. [2024-12-02 11:29:52,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-12-02 11:29:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 874 transitions. [2024-12-02 11:29:52,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-12-02 11:29:52,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:52,438 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:29:52,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 11:29:52,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:52,639 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:52,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash -483096033, now seen corresponding path program 1 times [2024-12-02 11:29:52,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:52,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319481430] [2024-12-02 11:29:52,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:52,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2024-12-02 11:29:52,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:29:52,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319481430] [2024-12-02 11:29:52,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319481430] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:29:52,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:29:52,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:29:52,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849623597] [2024-12-02 11:29:52,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:29:52,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:29:52,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:29:52,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:29:52,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:29:52,820 INFO L87 Difference]: Start difference. First operand 687 states and 874 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:29:52,964 INFO L93 Difference]: Finished difference Result 1178 states and 1494 transitions. [2024-12-02 11:29:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:29:52,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 271 [2024-12-02 11:29:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:29:52,967 INFO L225 Difference]: With dead ends: 1178 [2024-12-02 11:29:52,967 INFO L226 Difference]: Without dead ends: 782 [2024-12-02 11:29:52,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:29:52,968 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 43 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:29:52,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 515 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:29:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-12-02 11:29:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 672. [2024-12-02 11:29:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 552 states have (on average 1.1630434782608696) internal successors, (642), 556 states have internal predecessors, (642), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-12-02 11:29:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 850 transitions. [2024-12-02 11:29:53,031 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 850 transitions. Word has length 271 [2024-12-02 11:29:53,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:29:53,032 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 850 transitions. [2024-12-02 11:29:53,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:29:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 850 transitions. [2024-12-02 11:29:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 11:29:53,033 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:29:53,033 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:29:53,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 11:29:53,033 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:29:53,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:29:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash 680367868, now seen corresponding path program 1 times [2024-12-02 11:29:53,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:29:53,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908659628] [2024-12-02 11:29:53,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:53,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:29:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:29:53,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626438646] [2024-12-02 11:29:53,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:29:53,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:29:53,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:29:53,153 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:29:53,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 11:29:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:29:53,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-12-02 11:29:53,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:29:55,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:29:56,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-12-02 11:29:57,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-12-02 11:29:58,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2024-12-02 11:29:59,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-12-02 11:30:00,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:30:01,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:30:02,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2024-12-02 11:30:02,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-12-02 11:30:02,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:30:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:30:02,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2024-12-02 11:30:02,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:30:02,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2024-12-02 11:30:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 7 proven. 1762 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2024-12-02 11:30:02,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:30:02,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2024-12-02 11:30:11,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:30:11,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908659628] [2024-12-02 11:30:11,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:30:11,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626438646] [2024-12-02 11:30:11,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626438646] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:30:11,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:30:11,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-12-02 11:30:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671635830] [2024-12-02 11:30:11,030 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 11:30:11,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:30:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:30:11,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:30:11,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2024-12-02 11:30:11,031 INFO L87 Difference]: Start difference. First operand 672 states and 850 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2024-12-02 11:30:12,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:30:12,197 INFO L93 Difference]: Finished difference Result 1644 states and 2060 transitions. [2024-12-02 11:30:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:30:12,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 272 [2024-12-02 11:30:12,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:30:12,201 INFO L225 Difference]: With dead ends: 1644 [2024-12-02 11:30:12,201 INFO L226 Difference]: Without dead ends: 1068 [2024-12-02 11:30:12,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=145, Invalid=405, Unknown=2, NotChecked=0, Total=552 [2024-12-02 11:30:12,202 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 321 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:30:12,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 535 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:30:12,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2024-12-02 11:30:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 800. [2024-12-02 11:30:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 660 states have (on average 1.1575757575757575) internal successors, (764), 666 states have internal predecessors, (764), 120 states have call successors, (120), 19 states have call predecessors, (120), 19 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:30:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1004 transitions. [2024-12-02 11:30:12,288 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1004 transitions. Word has length 272 [2024-12-02 11:30:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:30:12,288 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1004 transitions. [2024-12-02 11:30:12,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2024-12-02 11:30:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1004 transitions. [2024-12-02 11:30:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 11:30:12,289 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:30:12,290 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:30:12,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 11:30:12,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:30:12,490 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:30:12,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:30:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash 482079634, now seen corresponding path program 1 times [2024-12-02 11:30:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:30:12,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882488920] [2024-12-02 11:30:12,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:30:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:30:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2024-12-02 11:30:14,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:30:14,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882488920] [2024-12-02 11:30:14,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882488920] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:30:14,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402047319] [2024-12-02 11:30:14,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:14,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:30:14,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:30:14,562 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:30:14,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 11:30:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:30:14,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-12-02 11:30:14,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:30:18,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:30:18,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-12-02 11:30:19,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:30:19,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:30:19,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 78 [2024-12-02 11:30:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 396 proven. 262 refuted. 0 times theorem prover too weak. 1921 trivial. 0 not checked. [2024-12-02 11:30:20,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:30:22,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402047319] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:30:22,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:30:22,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 26] total 37 [2024-12-02 11:30:22,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768773113] [2024-12-02 11:30:22,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:30:22,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 11:30:22,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:30:22,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 11:30:22,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=1798, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 11:30:22,533 INFO L87 Difference]: Start difference. First operand 800 states and 1004 transitions. Second operand has 37 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 9 states have call successors, (49), 6 states have call predecessors, (49), 7 states have return successors, (50), 7 states have call predecessors, (50), 9 states have call successors, (50) [2024-12-02 11:30:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:30:27,936 INFO L93 Difference]: Finished difference Result 1142 states and 1398 transitions. [2024-12-02 11:30:27,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 11:30:27,937 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 9 states have call successors, (49), 6 states have call predecessors, (49), 7 states have return successors, (50), 7 states have call predecessors, (50), 9 states have call successors, (50) Word has length 272 [2024-12-02 11:30:27,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:30:27,941 INFO L225 Difference]: With dead ends: 1142 [2024-12-02 11:30:27,941 INFO L226 Difference]: Without dead ends: 1140 [2024-12-02 11:30:27,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 276 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2253 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1839, Invalid=6351, Unknown=0, NotChecked=0, Total=8190 [2024-12-02 11:30:27,942 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 582 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:30:27,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1659 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 11:30:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2024-12-02 11:30:28,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 780. [2024-12-02 11:30:28,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 660 states have (on average 1.1575757575757575) internal successors, (764), 664 states have internal predecessors, (764), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 11:30:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 952 transitions. [2024-12-02 11:30:28,053 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 952 transitions. Word has length 272 [2024-12-02 11:30:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:30:28,053 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 952 transitions. [2024-12-02 11:30:28,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 9 states have call successors, (49), 6 states have call predecessors, (49), 7 states have return successors, (50), 7 states have call predecessors, (50), 9 states have call successors, (50) [2024-12-02 11:30:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 952 transitions. [2024-12-02 11:30:28,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-12-02 11:30:28,055 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:30:28,055 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:30:28,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:30:28,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 11:30:28,256 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:30:28,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:30:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1049038144, now seen corresponding path program 1 times [2024-12-02 11:30:28,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:30:28,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212515106] [2024-12-02 11:30:28,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:28,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:30:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:30:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2581 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-12-02 11:30:28,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:30:28,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212515106] [2024-12-02 11:30:28,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212515106] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:30:28,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:30:28,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:30:28,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861005919] [2024-12-02 11:30:28,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:30:28,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:30:28,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:30:28,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:30:28,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:30:28,359 INFO L87 Difference]: Start difference. First operand 780 states and 952 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:28,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:30:28,515 INFO L93 Difference]: Finished difference Result 1464 states and 1788 transitions. [2024-12-02 11:30:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:30:28,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 274 [2024-12-02 11:30:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:30:28,518 INFO L225 Difference]: With dead ends: 1464 [2024-12-02 11:30:28,518 INFO L226 Difference]: Without dead ends: 800 [2024-12-02 11:30:28,518 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 11:30:28,519 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 34 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:30:28,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 182 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:30:28,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-12-02 11:30:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 752. [2024-12-02 11:30:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 632 states have (on average 1.1534810126582278) internal successors, (729), 636 states have internal predecessors, (729), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 11:30:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 917 transitions. [2024-12-02 11:30:28,620 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 917 transitions. Word has length 274 [2024-12-02 11:30:28,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:30:28,620 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 917 transitions. [2024-12-02 11:30:28,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:28,620 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 917 transitions. [2024-12-02 11:30:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-12-02 11:30:28,621 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:30:28,622 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:30:28,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 11:30:28,622 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:30:28,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:30:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash -823590893, now seen corresponding path program 1 times [2024-12-02 11:30:28,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:30:28,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382781972] [2024-12-02 11:30:28,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:30:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:30:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2582 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-12-02 11:30:28,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:30:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382781972] [2024-12-02 11:30:28,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382781972] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:30:28,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:30:28,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:30:28,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801766903] [2024-12-02 11:30:28,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:30:28,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:30:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:30:28,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:30:28,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:30:28,706 INFO L87 Difference]: Start difference. First operand 752 states and 917 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:30:28,862 INFO L93 Difference]: Finished difference Result 1077 states and 1318 transitions. [2024-12-02 11:30:28,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:30:28,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 277 [2024-12-02 11:30:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:30:28,864 INFO L225 Difference]: With dead ends: 1077 [2024-12-02 11:30:28,865 INFO L226 Difference]: Without dead ends: 772 [2024-12-02 11:30:28,865 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 11:30:28,866 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 20 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:30:28,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 222 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:30:28,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-12-02 11:30:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 752. [2024-12-02 11:30:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 632 states have (on average 1.1503164556962024) internal successors, (727), 636 states have internal predecessors, (727), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 11:30:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 915 transitions. [2024-12-02 11:30:28,990 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 915 transitions. Word has length 277 [2024-12-02 11:30:28,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:30:28,990 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 915 transitions. [2024-12-02 11:30:28,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 915 transitions. [2024-12-02 11:30:28,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-12-02 11:30:28,992 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:30:28,993 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:30:28,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 11:30:28,993 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:30:28,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:30:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash 837963173, now seen corresponding path program 1 times [2024-12-02 11:30:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:30:28,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331485576] [2024-12-02 11:30:28,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:28,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:30:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:30:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-12-02 11:30:29,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:30:29,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331485576] [2024-12-02 11:30:29,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331485576] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:30:29,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:30:29,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:30:29,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736218565] [2024-12-02 11:30:29,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:30:29,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:30:29,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:30:29,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:30:29,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:30:29,410 INFO L87 Difference]: Start difference. First operand 752 states and 915 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:30:29,616 INFO L93 Difference]: Finished difference Result 1731 states and 2101 transitions. [2024-12-02 11:30:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:30:29,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 279 [2024-12-02 11:30:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:30:29,619 INFO L225 Difference]: With dead ends: 1731 [2024-12-02 11:30:29,620 INFO L226 Difference]: Without dead ends: 1091 [2024-12-02 11:30:29,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:30:29,621 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 34 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:30:29,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 424 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:30:29,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2024-12-02 11:30:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 983. [2024-12-02 11:30:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 863 states have (on average 1.1541135573580532) internal successors, (996), 867 states have internal predecessors, (996), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 11:30:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1184 transitions. [2024-12-02 11:30:29,737 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1184 transitions. Word has length 279 [2024-12-02 11:30:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:30:29,737 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1184 transitions. [2024-12-02 11:30:29,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1184 transitions. [2024-12-02 11:30:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-12-02 11:30:29,738 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:30:29,739 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:30:29,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 11:30:29,739 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:30:29,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:30:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 444936163, now seen corresponding path program 1 times [2024-12-02 11:30:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:30:29,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123142727] [2024-12-02 11:30:29,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:29,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:30:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:30:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2024-12-02 11:30:30,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:30:30,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123142727] [2024-12-02 11:30:30,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123142727] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:30:30,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:30:30,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:30:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782338249] [2024-12-02 11:30:30,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:30:30,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:30:30,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:30:30,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:30:30,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:30:30,005 INFO L87 Difference]: Start difference. First operand 983 states and 1184 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:30:30,147 INFO L93 Difference]: Finished difference Result 2078 states and 2496 transitions. [2024-12-02 11:30:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:30:30,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 279 [2024-12-02 11:30:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:30:30,151 INFO L225 Difference]: With dead ends: 2078 [2024-12-02 11:30:30,151 INFO L226 Difference]: Without dead ends: 1253 [2024-12-02 11:30:30,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:30:30,152 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 50 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:30:30,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 324 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:30:30,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2024-12-02 11:30:30,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1164. [2024-12-02 11:30:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1044 states have (on average 1.1561302681992338) internal successors, (1207), 1048 states have internal predecessors, (1207), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 11:30:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1395 transitions. [2024-12-02 11:30:30,257 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1395 transitions. Word has length 279 [2024-12-02 11:30:30,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:30:30,257 INFO L471 AbstractCegarLoop]: Abstraction has 1164 states and 1395 transitions. [2024-12-02 11:30:30,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1395 transitions. [2024-12-02 11:30:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-12-02 11:30:30,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:30:30,258 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:30:30,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 11:30:30,259 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:30:30,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:30:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1001206121, now seen corresponding path program 1 times [2024-12-02 11:30:30,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:30:30,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985013946] [2024-12-02 11:30:30,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:30,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:30:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:30:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2024-12-02 11:30:30,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:30:30,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985013946] [2024-12-02 11:30:30,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985013946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:30:30,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:30:30,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:30:30,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013358200] [2024-12-02 11:30:30,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:30:30,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:30:30,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:30:30,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:30:30,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:30:30,334 INFO L87 Difference]: Start difference. First operand 1164 states and 1395 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:30:30,480 INFO L93 Difference]: Finished difference Result 2366 states and 2852 transitions. [2024-12-02 11:30:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:30:30,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 280 [2024-12-02 11:30:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:30:30,484 INFO L225 Difference]: With dead ends: 2366 [2024-12-02 11:30:30,484 INFO L226 Difference]: Without dead ends: 1374 [2024-12-02 11:30:30,485 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 11:30:30,485 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 26 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:30:30,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 235 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:30:30,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2024-12-02 11:30:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1256. [2024-12-02 11:30:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1136 states have (on average 1.1769366197183098) internal successors, (1337), 1140 states have internal predecessors, (1337), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 11:30:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1525 transitions. [2024-12-02 11:30:30,587 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1525 transitions. Word has length 280 [2024-12-02 11:30:30,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:30:30,587 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 1525 transitions. [2024-12-02 11:30:30,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1525 transitions. [2024-12-02 11:30:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-12-02 11:30:30,589 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:30:30,589 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 11:30:30,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 11:30:30,589 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:30:30,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:30:30,589 INFO L85 PathProgramCache]: Analyzing trace with hash 406843289, now seen corresponding path program 1 times [2024-12-02 11:30:30,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:30:30,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722380264] [2024-12-02 11:30:30,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:30,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:30:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:30:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2024-12-02 11:30:31,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:30:31,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722380264] [2024-12-02 11:30:31,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722380264] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:30:31,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:30:31,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:30:31,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375795386] [2024-12-02 11:30:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:30:31,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:30:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:30:31,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:30:31,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:30:31,005 INFO L87 Difference]: Start difference. First operand 1256 states and 1525 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:30:31,330 INFO L93 Difference]: Finished difference Result 1296 states and 1567 transitions. [2024-12-02 11:30:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 11:30:31,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 280 [2024-12-02 11:30:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:30:31,333 INFO L225 Difference]: With dead ends: 1296 [2024-12-02 11:30:31,333 INFO L226 Difference]: Without dead ends: 1294 [2024-12-02 11:30:31,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:30:31,334 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 28 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:30:31,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 927 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:30:31,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2024-12-02 11:30:31,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1250. [2024-12-02 11:30:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1130 states have (on average 1.1778761061946903) internal successors, (1331), 1134 states have internal predecessors, (1331), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-12-02 11:30:31,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1519 transitions. [2024-12-02 11:30:31,432 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1519 transitions. Word has length 280 [2024-12-02 11:30:31,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:30:31,433 INFO L471 AbstractCegarLoop]: Abstraction has 1250 states and 1519 transitions. [2024-12-02 11:30:31,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:30:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1519 transitions. [2024-12-02 11:30:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-12-02 11:30:31,435 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:30:31,435 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 11:30:31,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 11:30:31,436 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:30:31,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:30:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2069813408, now seen corresponding path program 1 times [2024-12-02 11:30:31,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:30:31,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305003997] [2024-12-02 11:30:31,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:31,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:30:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:30:31,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648688226] [2024-12-02 11:30:31,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:30:31,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:30:31,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:30:31,624 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:30:31,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:30:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:30:32,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-12-02 11:30:32,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:30:39,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:30:42,343 INFO L349 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2024-12-02 11:30:42,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 92 [2024-12-02 11:30:44,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2024-12-02 11:30:52,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:30:52,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 318 treesize of output 1110 [2024-12-02 11:32:02,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:32:02,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-12-02 11:32:03,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:32:03,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:32:04,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-12-02 11:32:04,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:32:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:32:04,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2024-12-02 11:32:04,693 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:32:04,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2024-12-02 11:32:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5898 backedges. 14 proven. 3000 refuted. 0 times theorem prover too weak. 2884 trivial. 0 not checked. [2024-12-02 11:32:04,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:32:04,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2024-12-02 11:32:04,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2024-12-02 11:32:09,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:09,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305003997] [2024-12-02 11:32:09,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:32:09,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648688226] [2024-12-02 11:32:09,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648688226] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:32:09,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:32:09,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-12-02 11:32:09,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723293099] [2024-12-02 11:32:09,129 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 11:32:09,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 11:32:09,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:32:09,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 11:32:09,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=248, Unknown=1, NotChecked=0, Total=306 [2024-12-02 11:32:09,130 INFO L87 Difference]: Start difference. First operand 1250 states and 1519 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-12-02 11:32:38,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:38,239 INFO L93 Difference]: Finished difference Result 3370 states and 4116 transitions. [2024-12-02 11:32:38,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 11:32:38,240 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 404 [2024-12-02 11:32:38,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:38,245 INFO L225 Difference]: With dead ends: 3370 [2024-12-02 11:32:38,245 INFO L226 Difference]: Without dead ends: 2706 [2024-12-02 11:32:38,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=259, Invalid=796, Unknown=1, NotChecked=0, Total=1056 [2024-12-02 11:32:38,246 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 755 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:38,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 799 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time] [2024-12-02 11:32:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2024-12-02 11:32:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2086. [2024-12-02 11:32:38,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 1868 states have (on average 1.1793361884368307) internal successors, (2203), 1876 states have internal predecessors, (2203), 170 states have call successors, (170), 47 states have call predecessors, (170), 47 states have return successors, (170), 162 states have call predecessors, (170), 170 states have call successors, (170) [2024-12-02 11:32:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2543 transitions. [2024-12-02 11:32:38,703 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2543 transitions. Word has length 404 [2024-12-02 11:32:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:38,704 INFO L471 AbstractCegarLoop]: Abstraction has 2086 states and 2543 transitions. [2024-12-02 11:32:38,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-12-02 11:32:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2543 transitions. [2024-12-02 11:32:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-12-02 11:32:38,707 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:32:38,707 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 11:32:38,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 11:32:38,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 11:32:38,907 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:32:38,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:32:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1132496864, now seen corresponding path program 2 times [2024-12-02 11:32:38,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:32:38,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025684186] [2024-12-02 11:32:38,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:32:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:32:39,167 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:32:39,168 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-12-02 11:32:39,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083677901] [2024-12-02 11:32:39,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:32:39,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:32:39,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:32:39,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:32:39,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:32:39,444 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 11:32:39,444 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:32:39,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 11:32:39,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:32:43,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-12-02 11:32:45,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-12-02 11:32:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:32:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 11:32:45,430 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 11:32:45,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2024-12-02 11:32:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5898 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 5866 trivial. 0 not checked. [2024-12-02 11:32:45,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:32:45,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2024-12-02 11:32:45,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2024-12-02 11:32:49,783 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-12-02 11:32:49,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 118 [2024-12-02 11:32:55,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:32:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025684186] [2024-12-02 11:32:55,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:32:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083677901] [2024-12-02 11:32:55,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083677901] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:32:55,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:32:55,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-12-02 11:32:55,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704782814] [2024-12-02 11:32:55,071 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 11:32:55,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:32:55,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:32:55,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:32:55,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=98, Unknown=2, NotChecked=0, Total=132 [2024-12-02 11:32:55,071 INFO L87 Difference]: Start difference. First operand 2086 states and 2543 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:32:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:32:56,015 INFO L93 Difference]: Finished difference Result 3585 states and 4371 transitions. [2024-12-02 11:32:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:32:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 404 [2024-12-02 11:32:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:32:56,017 INFO L225 Difference]: With dead ends: 3585 [2024-12-02 11:32:56,017 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 11:32:56,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2024-12-02 11:32:56,020 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 82 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:32:56,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 238 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:32:56,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 11:32:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 11:32:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 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 11:32:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 11:32:56,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 404 [2024-12-02 11:32:56,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:32:56,021 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 11:32:56,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 11:32:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 11:32:56,021 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 11:32:56,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 11:32:56,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 11:32:56,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1f0364-c231-4a24-a5b5-8c04a6676106/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 11:32:56,226 INFO L422 BasicCegarLoop]: Path program histogram: [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 11:32:56,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.