./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem10_label50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem10_label50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB --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 e06ef1412a74393ad84e9e1ded9df4a85465ae72dfa72ae2b083f3676b944dcb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:55:02,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:55:02,500 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:55:02,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:55:02,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:55:02,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:55:02,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:55:02,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:55:02,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:55:02,534 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:55:02,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:55:02,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:55:02,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:55:02,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:55:02,536 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:55:02,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:55:02,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:55:02,536 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:55:02,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:55:02,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:55:02,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:55:02,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:55:02,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:55:02,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:55:02,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:55:02,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:55:02,538 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:55:02,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:55:02,538 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:55:02,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:55:02,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:55:02,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:55:02,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:55:02,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:55:02,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:55:02,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:55:02,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:55:02,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:55:02,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:55:02,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:55:02,540 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:55:02,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:55:02,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:55:02,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:55:02,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:55:02,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:55:02,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:55:02,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:55:02,540 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_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB 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 -> e06ef1412a74393ad84e9e1ded9df4a85465ae72dfa72ae2b083f3676b944dcb [2024-11-28 04:55:02,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:55:02,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:55:02,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:55:02,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:55:02,882 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:55:02,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem10_label50.c [2024-11-28 04:55:06,322 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/data/063afe9f5/5bd8976889ff4e96b64fc6ef29acbf63/FLAGdfbc0cc59 [2024-11-28 04:55:06,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:55:06,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/sv-benchmarks/c/eca-rers2012/Problem10_label50.c [2024-11-28 04:55:06,780 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/data/063afe9f5/5bd8976889ff4e96b64fc6ef29acbf63/FLAGdfbc0cc59 [2024-11-28 04:55:06,809 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/data/063afe9f5/5bd8976889ff4e96b64fc6ef29acbf63 [2024-11-28 04:55:06,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:55:06,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:55:06,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:55:06,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:55:06,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:55:06,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:06" (1/1) ... [2024-11-28 04:55:06,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4d8bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:06, skipping insertion in model container [2024-11-28 04:55:06,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:06" (1/1) ... [2024-11-28 04:55:06,873 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:55:07,126 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_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/sv-benchmarks/c/eca-rers2012/Problem10_label50.c[1307,1320] [2024-11-28 04:55:07,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:55:07,462 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:55:07,477 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_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/sv-benchmarks/c/eca-rers2012/Problem10_label50.c[1307,1320] [2024-11-28 04:55:07,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:55:07,629 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:55:07,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07 WrapperNode [2024-11-28 04:55:07,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:55:07,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:55:07,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:55:07,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:55:07,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,673 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,780 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 597 [2024-11-28 04:55:07,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:55:07,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:55:07,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:55:07,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:55:07,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,857 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:55:07,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,901 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:55:07,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:55:07,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:55:07,956 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:55:07,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (1/1) ... [2024-11-28 04:55:07,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:55:07,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:08,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:55:08,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:55:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:55:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:55:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:55:08,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:55:08,118 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:55:08,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:55:09,848 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-28 04:55:09,848 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:55:09,874 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:55:09,877 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:55:09,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:09 BoogieIcfgContainer [2024-11-28 04:55:09,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:55:09,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:55:09,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:55:09,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:55:09,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:06" (1/3) ... [2024-11-28 04:55:09,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9503030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:09, skipping insertion in model container [2024-11-28 04:55:09,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:07" (2/3) ... [2024-11-28 04:55:09,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9503030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:09, skipping insertion in model container [2024-11-28 04:55:09,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:09" (3/3) ... [2024-11-28 04:55:09,895 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem10_label50.c [2024-11-28 04:55:09,915 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:55:09,918 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem10_label50.c that has 1 procedures, 206 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:55:10,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:55:10,021 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;@56ce1a12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:55:10,022 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:55:10,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:55:10,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:10,034 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:10,035 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:10,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash 647015545, now seen corresponding path program 1 times [2024-11-28 04:55:10,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:10,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982441057] [2024-11-28 04:55:10,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:10,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:10,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:10,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982441057] [2024-11-28 04:55:10,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982441057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:10,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:10,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:55:10,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689049148] [2024-11-28 04:55:10,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:10,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:10,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:10,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:10,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:10,371 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:11,372 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2024-11-28 04:55:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:55:11,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:11,385 INFO L225 Difference]: With dead ends: 552 [2024-11-28 04:55:11,385 INFO L226 Difference]: Without dead ends: 282 [2024-11-28 04:55:11,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:11,392 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 154 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:11,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 120 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:55:11,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-28 04:55:11,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2024-11-28 04:55:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.3416370106761566) internal successors, (377), 281 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 377 transitions. [2024-11-28 04:55:11,442 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 377 transitions. Word has length 9 [2024-11-28 04:55:11,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:11,443 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 377 transitions. [2024-11-28 04:55:11,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 377 transitions. [2024-11-28 04:55:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:55:11,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:11,445 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:11,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:55:11,446 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:11,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:11,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1024247572, now seen corresponding path program 1 times [2024-11-28 04:55:11,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:11,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910514962] [2024-11-28 04:55:11,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:11,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:12,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:12,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910514962] [2024-11-28 04:55:12,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910514962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:12,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256439982] [2024-11-28 04:55:12,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:12,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:12,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:12,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:12,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:55:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:12,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:55:12,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:55:12,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:55:12,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256439982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:12,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:55:12,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-28 04:55:12,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764685978] [2024-11-28 04:55:12,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:12,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:12,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:12,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:55:12,408 INFO L87 Difference]: Start difference. First operand 282 states and 377 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:13,263 INFO L93 Difference]: Finished difference Result 562 states and 752 transitions. [2024-11-28 04:55:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:13,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-28 04:55:13,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:13,273 INFO L225 Difference]: With dead ends: 562 [2024-11-28 04:55:13,273 INFO L226 Difference]: Without dead ends: 560 [2024-11-28 04:55:13,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:55:13,277 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 114 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:13,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 11 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:55:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-28 04:55:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 421. [2024-11-28 04:55:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.4071428571428573) internal successors, (591), 420 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:13,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 591 transitions. [2024-11-28 04:55:13,333 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 591 transitions. Word has length 75 [2024-11-28 04:55:13,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:13,334 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 591 transitions. [2024-11-28 04:55:13,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 591 transitions. [2024-11-28 04:55:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:55:13,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:13,339 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:13,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:55:13,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:13,541 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:13,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:13,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1553241361, now seen corresponding path program 1 times [2024-11-28 04:55:13,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:13,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028416763] [2024-11-28 04:55:13,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:13,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:14,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028416763] [2024-11-28 04:55:14,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028416763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:14,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:14,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:55:14,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485572337] [2024-11-28 04:55:14,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:14,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:14,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:14,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:14,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:14,085 INFO L87 Difference]: Start difference. First operand 421 states and 591 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:14,880 INFO L93 Difference]: Finished difference Result 979 states and 1339 transitions. [2024-11-28 04:55:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:14,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-28 04:55:14,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:14,887 INFO L225 Difference]: With dead ends: 979 [2024-11-28 04:55:14,887 INFO L226 Difference]: Without dead ends: 560 [2024-11-28 04:55:14,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:14,894 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:14,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 77 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:55:14,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-28 04:55:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-28 04:55:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.3237924865831843) internal successors, (740), 559 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 740 transitions. [2024-11-28 04:55:14,945 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 740 transitions. Word has length 78 [2024-11-28 04:55:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:14,946 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 740 transitions. [2024-11-28 04:55:14,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 740 transitions. [2024-11-28 04:55:14,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 04:55:14,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:14,951 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:14,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:55:14,952 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:14,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:14,955 INFO L85 PathProgramCache]: Analyzing trace with hash 422285312, now seen corresponding path program 1 times [2024-11-28 04:55:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:14,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280548890] [2024-11-28 04:55:14,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:14,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:15,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280548890] [2024-11-28 04:55:15,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280548890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:15,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:15,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:55:15,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562466482] [2024-11-28 04:55:15,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:15,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:15,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:15,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:15,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:15,136 INFO L87 Difference]: Start difference. First operand 560 states and 740 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:16,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:16,002 INFO L93 Difference]: Finished difference Result 1257 states and 1758 transitions. [2024-11-28 04:55:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:16,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-28 04:55:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:16,008 INFO L225 Difference]: With dead ends: 1257 [2024-11-28 04:55:16,008 INFO L226 Difference]: Without dead ends: 838 [2024-11-28 04:55:16,009 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 [2024-11-28 04:55:16,010 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 133 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:16,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 226 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:55:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-28 04:55:16,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 699. [2024-11-28 04:55:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.3094555873925502) internal successors, (914), 698 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 914 transitions. [2024-11-28 04:55:16,061 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 914 transitions. Word has length 84 [2024-11-28 04:55:16,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:16,061 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 914 transitions. [2024-11-28 04:55:16,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 914 transitions. [2024-11-28 04:55:16,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:55:16,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:16,070 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:55:16,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:55:16,070 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:16,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:16,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2132078718, now seen corresponding path program 1 times [2024-11-28 04:55:16,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:16,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238359664] [2024-11-28 04:55:16,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:55:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:16,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238359664] [2024-11-28 04:55:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238359664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:16,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:16,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:55:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650714368] [2024-11-28 04:55:16,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:16,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:16,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:16,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:16,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:16,372 INFO L87 Difference]: Start difference. First operand 699 states and 914 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:17,162 INFO L93 Difference]: Finished difference Result 1535 states and 2010 transitions. [2024-11-28 04:55:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:17,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-11-28 04:55:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:17,170 INFO L225 Difference]: With dead ends: 1535 [2024-11-28 04:55:17,170 INFO L226 Difference]: Without dead ends: 977 [2024-11-28 04:55:17,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:17,174 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 107 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:17,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 34 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:55:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-28 04:55:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2024-11-28 04:55:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.1905737704918034) internal successors, (1162), 976 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1162 transitions. [2024-11-28 04:55:17,227 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1162 transitions. Word has length 144 [2024-11-28 04:55:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:17,228 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1162 transitions. [2024-11-28 04:55:17,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1162 transitions. [2024-11-28 04:55:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 04:55:17,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:17,236 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:55:17,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:55:17,236 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:17,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash -627353775, now seen corresponding path program 1 times [2024-11-28 04:55:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291950136] [2024-11-28 04:55:17,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:17,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:17,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:17,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291950136] [2024-11-28 04:55:17,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291950136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:17,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:17,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:55:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748658542] [2024-11-28 04:55:17,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:17,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:17,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:17,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:17,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:17,552 INFO L87 Difference]: Start difference. First operand 977 states and 1162 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:18,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:18,326 INFO L93 Difference]: Finished difference Result 2091 states and 2557 transitions. [2024-11-28 04:55:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:18,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-28 04:55:18,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:18,333 INFO L225 Difference]: With dead ends: 2091 [2024-11-28 04:55:18,334 INFO L226 Difference]: Without dead ends: 1255 [2024-11-28 04:55:18,335 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 [2024-11-28 04:55:18,336 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 60 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:18,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 213 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:55:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-28 04:55:18,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2024-11-28 04:55:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.1650717703349283) internal successors, (1461), 1254 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1461 transitions. [2024-11-28 04:55:18,378 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1461 transitions. Word has length 161 [2024-11-28 04:55:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:18,378 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1461 transitions. [2024-11-28 04:55:18,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1461 transitions. [2024-11-28 04:55:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-28 04:55:18,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:18,385 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:18,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:55:18,386 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:18,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:18,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1086428008, now seen corresponding path program 1 times [2024-11-28 04:55:18,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:18,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320866845] [2024-11-28 04:55:18,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:18,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:19,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320866845] [2024-11-28 04:55:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320866845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:19,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:55:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257515333] [2024-11-28 04:55:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:19,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:55:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:19,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:55:19,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:55:19,253 INFO L87 Difference]: Start difference. First operand 1255 states and 1461 transitions. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:20,208 INFO L93 Difference]: Finished difference Result 2424 states and 2831 transitions. [2024-11-28 04:55:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:55:20,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-28 04:55:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:20,215 INFO L225 Difference]: With dead ends: 2424 [2024-11-28 04:55:20,215 INFO L226 Difference]: Without dead ends: 1255 [2024-11-28 04:55:20,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:55:20,218 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 142 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:20,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 25 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:55:20,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-28 04:55:20,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2024-11-28 04:55:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.161084529505582) internal successors, (1456), 1254 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:20,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1456 transitions. [2024-11-28 04:55:20,270 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1456 transitions. Word has length 216 [2024-11-28 04:55:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:20,270 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1456 transitions. [2024-11-28 04:55:20,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:20,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1456 transitions. [2024-11-28 04:55:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-28 04:55:20,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:20,277 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:55:20,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:55:20,278 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:20,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:20,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2104357582, now seen corresponding path program 1 times [2024-11-28 04:55:20,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:20,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90744755] [2024-11-28 04:55:20,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:20,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:21,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:21,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90744755] [2024-11-28 04:55:21,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90744755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:21,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:21,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:55:21,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064760735] [2024-11-28 04:55:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:21,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:55:21,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:21,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:55:21,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:55:21,047 INFO L87 Difference]: Start difference. First operand 1255 states and 1456 transitions. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:22,465 INFO L93 Difference]: Finished difference Result 4178 states and 4923 transitions. [2024-11-28 04:55:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:55:22,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2024-11-28 04:55:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:22,481 INFO L225 Difference]: With dead ends: 4178 [2024-11-28 04:55:22,482 INFO L226 Difference]: Without dead ends: 3064 [2024-11-28 04:55:22,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:55:22,485 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 58 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:22,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 54 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:55:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2024-11-28 04:55:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 2784. [2024-11-28 04:55:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2783 states have (on average 1.15199425080848) internal successors, (3206), 2783 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 3206 transitions. [2024-11-28 04:55:22,580 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 3206 transitions. Word has length 252 [2024-11-28 04:55:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:22,582 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 3206 transitions. [2024-11-28 04:55:22,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 3206 transitions. [2024-11-28 04:55:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-28 04:55:22,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:22,589 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:22,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:55:22,589 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:22,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash 171228312, now seen corresponding path program 1 times [2024-11-28 04:55:22,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:22,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895592693] [2024-11-28 04:55:22,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:22,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:23,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895592693] [2024-11-28 04:55:23,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895592693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:23,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:23,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:55:23,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197172118] [2024-11-28 04:55:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:23,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:55:23,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:23,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:55:23,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:55:23,233 INFO L87 Difference]: Start difference. First operand 2784 states and 3206 transitions. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:24,514 INFO L93 Difference]: Finished difference Result 5705 states and 6595 transitions. [2024-11-28 04:55:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:55:24,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-11-28 04:55:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:24,529 INFO L225 Difference]: With dead ends: 5705 [2024-11-28 04:55:24,529 INFO L226 Difference]: Without dead ends: 3062 [2024-11-28 04:55:24,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:55:24,533 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 153 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:24,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 203 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:55:24,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2024-11-28 04:55:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2089. [2024-11-28 04:55:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2088 states have (on average 1.1336206896551724) internal successors, (2367), 2088 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2367 transitions. [2024-11-28 04:55:24,611 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2367 transitions. Word has length 257 [2024-11-28 04:55:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:24,611 INFO L471 AbstractCegarLoop]: Abstraction has 2089 states and 2367 transitions. [2024-11-28 04:55:24,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2367 transitions. [2024-11-28 04:55:24,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-28 04:55:24,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:24,618 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:24,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:55:24,618 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:24,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2099230470, now seen corresponding path program 1 times [2024-11-28 04:55:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411369054] [2024-11-28 04:55:24,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:24,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-28 04:55:24,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:24,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411369054] [2024-11-28 04:55:24,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411369054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:24,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:24,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:55:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949675079] [2024-11-28 04:55:24,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:24,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:24,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:24,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:24,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:24,968 INFO L87 Difference]: Start difference. First operand 2089 states and 2367 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:25,722 INFO L93 Difference]: Finished difference Result 4454 states and 5130 transitions. [2024-11-28 04:55:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:25,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-11-28 04:55:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:25,733 INFO L225 Difference]: With dead ends: 4454 [2024-11-28 04:55:25,733 INFO L226 Difference]: Without dead ends: 2506 [2024-11-28 04:55:25,735 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 [2024-11-28 04:55:25,736 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 133 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:25,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 225 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:55:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2024-11-28 04:55:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2228. [2024-11-28 04:55:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 1.1248316120341266) internal successors, (2505), 2227 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:25,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2505 transitions. [2024-11-28 04:55:25,802 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2505 transitions. Word has length 257 [2024-11-28 04:55:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:25,803 INFO L471 AbstractCegarLoop]: Abstraction has 2228 states and 2505 transitions. [2024-11-28 04:55:25,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:25,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2505 transitions. [2024-11-28 04:55:25,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-28 04:55:25,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:25,809 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:25,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:55:25,809 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:25,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:25,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1814419780, now seen corresponding path program 1 times [2024-11-28 04:55:25,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:25,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071196343] [2024-11-28 04:55:25,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:25,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-28 04:55:26,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:26,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071196343] [2024-11-28 04:55:26,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071196343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:26,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:26,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:55:26,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084981704] [2024-11-28 04:55:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:26,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:26,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:26,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:26,150 INFO L87 Difference]: Start difference. First operand 2228 states and 2505 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:26,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:26,932 INFO L93 Difference]: Finished difference Result 5288 states and 5982 transitions. [2024-11-28 04:55:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:26,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2024-11-28 04:55:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:26,946 INFO L225 Difference]: With dead ends: 5288 [2024-11-28 04:55:26,947 INFO L226 Difference]: Without dead ends: 3201 [2024-11-28 04:55:26,950 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 [2024-11-28 04:55:26,951 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 135 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:26,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 51 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:55:26,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2024-11-28 04:55:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 2645. [2024-11-28 04:55:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2644 states have (on average 1.1161119515885023) internal successors, (2951), 2644 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 2951 transitions. [2024-11-28 04:55:27,040 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 2951 transitions. Word has length 270 [2024-11-28 04:55:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:27,041 INFO L471 AbstractCegarLoop]: Abstraction has 2645 states and 2951 transitions. [2024-11-28 04:55:27,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 2951 transitions. [2024-11-28 04:55:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-28 04:55:27,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:27,049 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:27,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:55:27,051 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:27,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:27,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1670901537, now seen corresponding path program 1 times [2024-11-28 04:55:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545546195] [2024-11-28 04:55:27,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:27,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-28 04:55:27,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:27,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545546195] [2024-11-28 04:55:27,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545546195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:27,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:27,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:55:27,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907205578] [2024-11-28 04:55:27,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:27,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:27,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:27,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:27,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:27,409 INFO L87 Difference]: Start difference. First operand 2645 states and 2951 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:28,167 INFO L93 Difference]: Finished difference Result 5983 states and 6674 transitions. [2024-11-28 04:55:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:28,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2024-11-28 04:55:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:28,179 INFO L225 Difference]: With dead ends: 5983 [2024-11-28 04:55:28,179 INFO L226 Difference]: Without dead ends: 2506 [2024-11-28 04:55:28,183 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 [2024-11-28 04:55:28,184 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 133 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:28,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 225 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:55:28,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2024-11-28 04:55:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2024-11-28 04:55:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2505 states have (on average 1.111377245508982) internal successors, (2784), 2505 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 2784 transitions. [2024-11-28 04:55:28,253 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 2784 transitions. Word has length 306 [2024-11-28 04:55:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:28,253 INFO L471 AbstractCegarLoop]: Abstraction has 2506 states and 2784 transitions. [2024-11-28 04:55:28,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 2784 transitions. [2024-11-28 04:55:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-28 04:55:28,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:28,263 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:55:28,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:55:28,263 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:28,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash 179712783, now seen corresponding path program 1 times [2024-11-28 04:55:28,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:28,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10138304] [2024-11-28 04:55:28,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:28,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-28 04:55:28,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:28,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10138304] [2024-11-28 04:55:28,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10138304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:28,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:28,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:55:28,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805979855] [2024-11-28 04:55:28,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:28,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:55:28,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:28,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:55:28,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:55:28,685 INFO L87 Difference]: Start difference. First operand 2506 states and 2784 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:29,562 INFO L93 Difference]: Finished difference Result 4732 states and 5276 transitions. [2024-11-28 04:55:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:55:29,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 350 [2024-11-28 04:55:29,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:29,573 INFO L225 Difference]: With dead ends: 4732 [2024-11-28 04:55:29,573 INFO L226 Difference]: Without dead ends: 2367 [2024-11-28 04:55:29,576 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 [2024-11-28 04:55:29,578 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:29,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 210 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:55:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2024-11-28 04:55:29,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2367. [2024-11-28 04:55:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2366 states have (on average 1.084530853761623) internal successors, (2566), 2366 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 2566 transitions. [2024-11-28 04:55:29,638 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 2566 transitions. Word has length 350 [2024-11-28 04:55:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:29,639 INFO L471 AbstractCegarLoop]: Abstraction has 2367 states and 2566 transitions. [2024-11-28 04:55:29,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 2566 transitions. [2024-11-28 04:55:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-28 04:55:29,649 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:29,649 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:55:29,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:55:29,650 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:29,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1230177848, now seen corresponding path program 1 times [2024-11-28 04:55:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626744052] [2024-11-28 04:55:29,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 217 proven. 15 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:55:30,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:30,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626744052] [2024-11-28 04:55:30,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626744052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:30,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455822202] [2024-11-28 04:55:30,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:30,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:30,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:30,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:30,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c2285ed-7a13-4b87-aeeb-d3130bcf11f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:55:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:30,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:55:31,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:47,399 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:58:00,263 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:58:30,090 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:58:45,304 WARN L286 SmtUtils]: Spent 7.30s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:59:04,139 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:00:49,331 WARN L286 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 28 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:01:22,211 WARN L286 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:01:40,023 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:01:52,041 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:02:16,145 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:02:36,232 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:02:56,524 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:03:12,568 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:03:29,971 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:03:44,008 WARN L286 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:03:56,034 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:04:12,082 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:04:24,111 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:04:48,415 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:05:04,449 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:05:32,817 WARN L286 SmtUtils]: Spent 9.24s on a formula simplification. DAG size of input: 35 DAG size of output: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:05:55,984 WARN L286 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:06:44,595 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:07:28,321 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:07:44,359 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:08:00,440 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:08:36,659 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:08:48,695 WARN L286 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:09:04,721 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:09:16,737 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:09:23,694 WARN L286 SmtUtils]: Spent 6.96s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:09:41,120 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 05:09:53,150 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)