./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.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_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5deaf1c7eecf4d76182f6b98ab14efecb2cf3c3c2e7d8162af75087f90c331b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:44:28,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:44:28,788 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:44:28,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:44:28,793 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:44:28,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:44:28,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:44:28,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:44:28,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:44:28,817 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:44:28,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:44:28,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:44:28,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:44:28,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:44:28,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:44:28,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:44:28,819 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:44:28,819 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:44:28,819 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:44:28,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:44:28,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:44:28,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:44:28,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:44:28,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:44:28,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:44:28,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:44:28,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:44:28,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:44:28,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:44:28,820 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_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5deaf1c7eecf4d76182f6b98ab14efecb2cf3c3c2e7d8162af75087f90c331b [2024-12-02 13:44:29,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:44:29,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:44:29,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:44:29,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:44:29,094 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:44:29,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2024-12-02 13:44:31,779 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/data/9fc1f10b2/e125d986a35a4664989d36552251cede/FLAG5e45bc8f0 [2024-12-02 13:44:32,014 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:44:32,014 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2024-12-02 13:44:32,024 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/data/9fc1f10b2/e125d986a35a4664989d36552251cede/FLAG5e45bc8f0 [2024-12-02 13:44:32,039 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/data/9fc1f10b2/e125d986a35a4664989d36552251cede [2024-12-02 13:44:32,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:44:32,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:44:32,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:44:32,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:44:32,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:44:32,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260dac7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32, skipping insertion in model container [2024-12-02 13:44:32,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,071 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:44:32,257 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_d0893c88-4c17-44fb-b17b-0e50c06d5d10/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2024-12-02 13:44:32,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:44:32,271 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:44:32,312 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_d0893c88-4c17-44fb-b17b-0e50c06d5d10/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2024-12-02 13:44:32,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:44:32,331 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:44:32,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32 WrapperNode [2024-12-02 13:44:32,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:44:32,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:44:32,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:44:32,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:44:32,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,380 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 249 [2024-12-02 13:44:32,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:44:32,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:44:32,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:44:32,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:44:32,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,394 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,412 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 13:44:32,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,418 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:44:32,432 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:44:32,432 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:44:32,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:44:32,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (1/1) ... [2024-12-02 13:44:32,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:44:32,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:44:32,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:44:32,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:44:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:44:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:44:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:44:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:44:32,560 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:44:32,561 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:44:32,885 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-12-02 13:44:32,885 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:44:32,894 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:44:32,894 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 13:44:32,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:44:32 BoogieIcfgContainer [2024-12-02 13:44:32,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:44:32,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:44:32,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:44:32,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:44:32,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:44:32" (1/3) ... [2024-12-02 13:44:32,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e5279b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:44:32, skipping insertion in model container [2024-12-02 13:44:32,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:32" (2/3) ... [2024-12-02 13:44:32,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e5279b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:44:32, skipping insertion in model container [2024-12-02 13:44:32,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:44:32" (3/3) ... [2024-12-02 13:44:32,902 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2024-12-02 13:44:32,913 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:44:32,915 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c that has 1 procedures, 68 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:44:32,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:44:32,967 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;@1025a4c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:44:32,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:44:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 13:44:32,975 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:32,975 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:32,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:32,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:32,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1887363766, now seen corresponding path program 1 times [2024-12-02 13:44:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:32,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006976638] [2024-12-02 13:44:32,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:32,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:33,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:33,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006976638] [2024-12-02 13:44:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006976638] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:33,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:33,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:44:33,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560031207] [2024-12-02 13:44:33,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:33,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:44:33,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:33,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:44:33,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:44:33,343 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 0 states have call successors, (0), 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 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:33,435 INFO L93 Difference]: Finished difference Result 158 states and 256 transitions. [2024-12-02 13:44:33,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:44:33,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-12-02 13:44:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:33,444 INFO L225 Difference]: With dead ends: 158 [2024-12-02 13:44:33,444 INFO L226 Difference]: Without dead ends: 105 [2024-12-02 13:44:33,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:44:33,450 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 64 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:33,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 395 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:44:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-12-02 13:44:33,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 64. [2024-12-02 13:44:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 63 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2024-12-02 13:44:33,477 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 26 [2024-12-02 13:44:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:33,477 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2024-12-02 13:44:33,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2024-12-02 13:44:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 13:44:33,479 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:33,479 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:33,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:44:33,480 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:33,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:33,481 INFO L85 PathProgramCache]: Analyzing trace with hash 285491776, now seen corresponding path program 1 times [2024-12-02 13:44:33,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:33,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220640602] [2024-12-02 13:44:33,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:33,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:33,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220640602] [2024-12-02 13:44:33,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220640602] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:33,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:33,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:44:33,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738477875] [2024-12-02 13:44:33,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:33,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:44:33,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:33,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:44:33,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:44:33,646 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:33,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:33,729 INFO L93 Difference]: Finished difference Result 228 states and 348 transitions. [2024-12-02 13:44:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:44:33,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-12-02 13:44:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:33,731 INFO L225 Difference]: With dead ends: 228 [2024-12-02 13:44:33,731 INFO L226 Difference]: Without dead ends: 187 [2024-12-02 13:44:33,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:44:33,732 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 367 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:33,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 327 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-12-02 13:44:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 103. [2024-12-02 13:44:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 102 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 150 transitions. [2024-12-02 13:44:33,742 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 150 transitions. Word has length 42 [2024-12-02 13:44:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:33,743 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 150 transitions. [2024-12-02 13:44:33,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:33,743 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 150 transitions. [2024-12-02 13:44:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 13:44:33,744 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:33,744 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:33,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:44:33,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:33,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:33,745 INFO L85 PathProgramCache]: Analyzing trace with hash -123012997, now seen corresponding path program 1 times [2024-12-02 13:44:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:33,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444073387] [2024-12-02 13:44:33,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:33,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444073387] [2024-12-02 13:44:33,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444073387] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:33,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:33,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:44:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705256984] [2024-12-02 13:44:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:33,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:44:33,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:33,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:44:33,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:44:33,999 INFO L87 Difference]: Start difference. First operand 103 states and 150 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:34,025 INFO L93 Difference]: Finished difference Result 111 states and 159 transitions. [2024-12-02 13:44:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:44:34,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-12-02 13:44:34,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:34,026 INFO L225 Difference]: With dead ends: 111 [2024-12-02 13:44:34,026 INFO L226 Difference]: Without dead ends: 109 [2024-12-02 13:44:34,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:44:34,027 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:34,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-12-02 13:44:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-12-02 13:44:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 108 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2024-12-02 13:44:34,036 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 43 [2024-12-02 13:44:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:34,036 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2024-12-02 13:44:34,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2024-12-02 13:44:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 13:44:34,038 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:34,038 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:34,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:44:34,038 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:34,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash 534142840, now seen corresponding path program 1 times [2024-12-02 13:44:34,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:34,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795751500] [2024-12-02 13:44:34,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:34,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795751500] [2024-12-02 13:44:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795751500] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:34,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:34,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:34,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59829582] [2024-12-02 13:44:34,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:34,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:34,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:34,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:34,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,115 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:34,135 INFO L93 Difference]: Finished difference Result 266 states and 397 transitions. [2024-12-02 13:44:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:34,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-12-02 13:44:34,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:34,137 INFO L225 Difference]: With dead ends: 266 [2024-12-02 13:44:34,137 INFO L226 Difference]: Without dead ends: 180 [2024-12-02 13:44:34,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,139 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:34,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 150 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-12-02 13:44:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2024-12-02 13:44:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.4745762711864407) internal successors, (261), 177 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 261 transitions. [2024-12-02 13:44:34,150 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 261 transitions. Word has length 44 [2024-12-02 13:44:34,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:34,150 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 261 transitions. [2024-12-02 13:44:34,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 261 transitions. [2024-12-02 13:44:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 13:44:34,152 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:34,152 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:34,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:44:34,152 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:34,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:34,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1933647607, now seen corresponding path program 1 times [2024-12-02 13:44:34,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:34,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655642062] [2024-12-02 13:44:34,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:34,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:34,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:34,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655642062] [2024-12-02 13:44:34,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655642062] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:34,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:34,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:34,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472538729] [2024-12-02 13:44:34,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:34,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:34,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:34,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:34,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,214 INFO L87 Difference]: Start difference. First operand 178 states and 261 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:34,237 INFO L93 Difference]: Finished difference Result 337 states and 503 transitions. [2024-12-02 13:44:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:34,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-12-02 13:44:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:34,239 INFO L225 Difference]: With dead ends: 337 [2024-12-02 13:44:34,239 INFO L226 Difference]: Without dead ends: 251 [2024-12-02 13:44:34,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,240 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:34,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:34,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-12-02 13:44:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2024-12-02 13:44:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4758064516129032) internal successors, (366), 248 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 366 transitions. [2024-12-02 13:44:34,251 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 366 transitions. Word has length 44 [2024-12-02 13:44:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:34,252 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 366 transitions. [2024-12-02 13:44:34,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 366 transitions. [2024-12-02 13:44:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 13:44:34,253 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:34,253 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:34,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:44:34,253 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:34,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:34,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1655551852, now seen corresponding path program 1 times [2024-12-02 13:44:34,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:34,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170941295] [2024-12-02 13:44:34,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:34,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:34,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170941295] [2024-12-02 13:44:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170941295] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:34,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:34,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682155471] [2024-12-02 13:44:34,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:34,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:34,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:34,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:34,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,330 INFO L87 Difference]: Start difference. First operand 249 states and 366 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:34,356 INFO L93 Difference]: Finished difference Result 647 states and 962 transitions. [2024-12-02 13:44:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:34,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-12-02 13:44:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:34,360 INFO L225 Difference]: With dead ends: 647 [2024-12-02 13:44:34,361 INFO L226 Difference]: Without dead ends: 424 [2024-12-02 13:44:34,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,362 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 44 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:34,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-12-02 13:44:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 422. [2024-12-02 13:44:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.4608076009501187) internal successors, (615), 421 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 615 transitions. [2024-12-02 13:44:34,379 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 615 transitions. Word has length 45 [2024-12-02 13:44:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:34,379 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 615 transitions. [2024-12-02 13:44:34,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 615 transitions. [2024-12-02 13:44:34,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 13:44:34,380 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:34,380 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:34,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:44:34,380 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:34,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:34,381 INFO L85 PathProgramCache]: Analyzing trace with hash 838726516, now seen corresponding path program 1 times [2024-12-02 13:44:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:34,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87566267] [2024-12-02 13:44:34,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:34,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:34,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87566267] [2024-12-02 13:44:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87566267] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:34,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:34,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:34,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192624733] [2024-12-02 13:44:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:34,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:34,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:34,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,434 INFO L87 Difference]: Start difference. First operand 422 states and 615 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:34,463 INFO L93 Difference]: Finished difference Result 1118 states and 1625 transitions. [2024-12-02 13:44:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:34,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-12-02 13:44:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:34,466 INFO L225 Difference]: With dead ends: 1118 [2024-12-02 13:44:34,466 INFO L226 Difference]: Without dead ends: 722 [2024-12-02 13:44:34,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,468 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 48 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:34,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-12-02 13:44:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 720. [2024-12-02 13:44:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.4228094575799721) internal successors, (1023), 719 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1023 transitions. [2024-12-02 13:44:34,494 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1023 transitions. Word has length 45 [2024-12-02 13:44:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:34,494 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1023 transitions. [2024-12-02 13:44:34,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1023 transitions. [2024-12-02 13:44:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 13:44:34,496 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:34,496 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:44:34,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:44:34,496 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:34,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:34,497 INFO L85 PathProgramCache]: Analyzing trace with hash -760093606, now seen corresponding path program 1 times [2024-12-02 13:44:34,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:34,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924271416] [2024-12-02 13:44:34,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:34,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:34,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924271416] [2024-12-02 13:44:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924271416] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:34,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165796108] [2024-12-02 13:44:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:34,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:34,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:34,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,620 INFO L87 Difference]: Start difference. First operand 720 states and 1023 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:34,649 INFO L93 Difference]: Finished difference Result 1416 states and 2021 transitions. [2024-12-02 13:44:34,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:34,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 13:44:34,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:34,653 INFO L225 Difference]: With dead ends: 1416 [2024-12-02 13:44:34,653 INFO L226 Difference]: Without dead ends: 722 [2024-12-02 13:44:34,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,655 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:34,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-12-02 13:44:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 720. [2024-12-02 13:44:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.4061196105702365) internal successors, (1011), 719 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1011 transitions. [2024-12-02 13:44:34,697 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1011 transitions. Word has length 64 [2024-12-02 13:44:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:34,697 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1011 transitions. [2024-12-02 13:44:34,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1011 transitions. [2024-12-02 13:44:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 13:44:34,698 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:34,699 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:34,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:44:34,699 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:34,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2049850201, now seen corresponding path program 1 times [2024-12-02 13:44:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:34,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601688915] [2024-12-02 13:44:34,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:34,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:34,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:34,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601688915] [2024-12-02 13:44:34,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601688915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:34,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:34,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281882408] [2024-12-02 13:44:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:34,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:34,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:34,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:34,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,831 INFO L87 Difference]: Start difference. First operand 720 states and 1011 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:34,861 INFO L93 Difference]: Finished difference Result 1070 states and 1505 transitions. [2024-12-02 13:44:34,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:34,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 13:44:34,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:34,864 INFO L225 Difference]: With dead ends: 1070 [2024-12-02 13:44:34,864 INFO L226 Difference]: Without dead ends: 376 [2024-12-02 13:44:34,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:34,866 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 35 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:34,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 166 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:34,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-12-02 13:44:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2024-12-02 13:44:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.3753351206434317) internal successors, (513), 373 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 513 transitions. [2024-12-02 13:44:34,885 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 513 transitions. Word has length 64 [2024-12-02 13:44:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:34,885 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 513 transitions. [2024-12-02 13:44:34,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 513 transitions. [2024-12-02 13:44:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 13:44:34,886 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:34,886 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:34,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:44:34,886 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:34,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1858868776, now seen corresponding path program 1 times [2024-12-02 13:44:34,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:34,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090877135] [2024-12-02 13:44:34,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:34,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:44:35,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:35,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090877135] [2024-12-02 13:44:35,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090877135] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:44:35,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393766123] [2024-12-02 13:44:35,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:35,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:44:35,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:44:35,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:44:35,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:44:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:35,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 13:44:35,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:44:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:35,591 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:44:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:36,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393766123] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:44:36,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:44:36,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 8] total 14 [2024-12-02 13:44:36,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143200818] [2024-12-02 13:44:36,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:44:36,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:44:36,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:36,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:44:36,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:44:36,150 INFO L87 Difference]: Start difference. First operand 374 states and 513 transitions. Second operand has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:36,925 INFO L93 Difference]: Finished difference Result 1682 states and 2341 transitions. [2024-12-02 13:44:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 13:44:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 13:44:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:36,931 INFO L225 Difference]: With dead ends: 1682 [2024-12-02 13:44:36,931 INFO L226 Difference]: Without dead ends: 1440 [2024-12-02 13:44:36,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=400, Invalid=1492, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 13:44:36,933 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 784 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:36,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1037 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:44:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2024-12-02 13:44:36,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1320. [2024-12-02 13:44:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.3790750568612584) internal successors, (1819), 1319 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1819 transitions. [2024-12-02 13:44:36,963 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1819 transitions. Word has length 64 [2024-12-02 13:44:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:36,964 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1819 transitions. [2024-12-02 13:44:36,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1819 transitions. [2024-12-02 13:44:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 13:44:36,964 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:36,964 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:36,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:44:37,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 13:44:37,165 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:37,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1946728562, now seen corresponding path program 1 times [2024-12-02 13:44:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:37,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896896673] [2024-12-02 13:44:37,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:37,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 13:44:37,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:37,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896896673] [2024-12-02 13:44:37,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896896673] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:37,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:37,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:44:37,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512876373] [2024-12-02 13:44:37,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:37,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:44:37,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:37,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:44:37,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:44:37,244 INFO L87 Difference]: Start difference. First operand 1320 states and 1819 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:37,319 INFO L93 Difference]: Finished difference Result 3268 states and 4541 transitions. [2024-12-02 13:44:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:44:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 13:44:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:37,326 INFO L225 Difference]: With dead ends: 3268 [2024-12-02 13:44:37,326 INFO L226 Difference]: Without dead ends: 2584 [2024-12-02 13:44:37,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:44:37,328 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 229 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:37,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 360 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:37,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2024-12-02 13:44:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1960. [2024-12-02 13:44:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1959 states have (on average 1.375701888718734) internal successors, (2695), 1959 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2695 transitions. [2024-12-02 13:44:37,375 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2695 transitions. Word has length 65 [2024-12-02 13:44:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:37,375 INFO L471 AbstractCegarLoop]: Abstraction has 1960 states and 2695 transitions. [2024-12-02 13:44:37,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2695 transitions. [2024-12-02 13:44:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 13:44:37,376 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:37,376 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:37,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:44:37,376 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:37,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash -168616784, now seen corresponding path program 1 times [2024-12-02 13:44:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598594163] [2024-12-02 13:44:37,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:37,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 13:44:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:37,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598594163] [2024-12-02 13:44:37,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598594163] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:37,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:37,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:44:37,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552882401] [2024-12-02 13:44:37,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:37,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:44:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:37,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:44:37,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:44:37,481 INFO L87 Difference]: Start difference. First operand 1960 states and 2695 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:37,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:37,582 INFO L93 Difference]: Finished difference Result 3908 states and 5417 transitions. [2024-12-02 13:44:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:44:37,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 13:44:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:37,595 INFO L225 Difference]: With dead ends: 3908 [2024-12-02 13:44:37,595 INFO L226 Difference]: Without dead ends: 3224 [2024-12-02 13:44:37,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:44:37,597 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 226 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:37,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 400 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2024-12-02 13:44:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 2600. [2024-12-02 13:44:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2599 states have (on average 1.3739899961523663) internal successors, (3571), 2599 states have internal predecessors, (3571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3571 transitions. [2024-12-02 13:44:37,695 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3571 transitions. Word has length 65 [2024-12-02 13:44:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:37,695 INFO L471 AbstractCegarLoop]: Abstraction has 2600 states and 3571 transitions. [2024-12-02 13:44:37,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:37,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3571 transitions. [2024-12-02 13:44:37,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 13:44:37,696 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:37,696 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:37,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:44:37,696 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:37,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash 291660367, now seen corresponding path program 1 times [2024-12-02 13:44:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:37,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197058229] [2024-12-02 13:44:37,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:44:37,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:37,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197058229] [2024-12-02 13:44:37,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197058229] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:37,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:37,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:44:37,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63655655] [2024-12-02 13:44:37,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:37,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:44:37,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:37,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:44:37,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:44:37,785 INFO L87 Difference]: Start difference. First operand 2600 states and 3571 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:37,891 INFO L93 Difference]: Finished difference Result 4388 states and 6061 transitions. [2024-12-02 13:44:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:44:37,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 13:44:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:37,904 INFO L225 Difference]: With dead ends: 4388 [2024-12-02 13:44:37,904 INFO L226 Difference]: Without dead ends: 3806 [2024-12-02 13:44:37,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:44:37,906 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 222 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:37,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 365 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2024-12-02 13:44:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3182. [2024-12-02 13:44:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 3181 states have (on average 1.3715812637535367) internal successors, (4363), 3181 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 4363 transitions. [2024-12-02 13:44:38,041 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 4363 transitions. Word has length 65 [2024-12-02 13:44:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:38,041 INFO L471 AbstractCegarLoop]: Abstraction has 3182 states and 4363 transitions. [2024-12-02 13:44:38,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 4363 transitions. [2024-12-02 13:44:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 13:44:38,042 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:38,042 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:38,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:44:38,042 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:38,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash 54523587, now seen corresponding path program 1 times [2024-12-02 13:44:38,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:38,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914121110] [2024-12-02 13:44:38,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:38,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:38,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914121110] [2024-12-02 13:44:38,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914121110] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:38,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:38,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:38,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738291386] [2024-12-02 13:44:38,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:38,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:38,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:38,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:38,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:38,127 INFO L87 Difference]: Start difference. First operand 3182 states and 4363 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:38,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:38,176 INFO L93 Difference]: Finished difference Result 4623 states and 6314 transitions. [2024-12-02 13:44:38,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:38,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 13:44:38,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:38,181 INFO L225 Difference]: With dead ends: 4623 [2024-12-02 13:44:38,181 INFO L226 Difference]: Without dead ends: 1467 [2024-12-02 13:44:38,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:38,185 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:38,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:38,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2024-12-02 13:44:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1165. [2024-12-02 13:44:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 1.3625429553264605) internal successors, (1586), 1164 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1586 transitions. [2024-12-02 13:44:38,226 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1586 transitions. Word has length 68 [2024-12-02 13:44:38,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:38,226 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1586 transitions. [2024-12-02 13:44:38,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1586 transitions. [2024-12-02 13:44:38,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 13:44:38,227 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:38,227 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:38,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:44:38,227 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:38,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1659447100, now seen corresponding path program 1 times [2024-12-02 13:44:38,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:38,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287526343] [2024-12-02 13:44:38,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:38,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:38,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:38,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287526343] [2024-12-02 13:44:38,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287526343] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:44:38,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120473816] [2024-12-02 13:44:38,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:38,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:44:38,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:44:38,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:44:38,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:44:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:38,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 13:44:38,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:44:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:40,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:44:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:43,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120473816] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:44:43,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:44:43,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 16] total 34 [2024-12-02 13:44:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391202892] [2024-12-02 13:44:43,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:44:43,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 13:44:43,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:43,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 13:44:43,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 13:44:43,424 INFO L87 Difference]: Start difference. First operand 1165 states and 1586 transitions. Second operand has 34 states, 34 states have (on average 5.029411764705882) internal successors, (171), 34 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:49,498 INFO L93 Difference]: Finished difference Result 11840 states and 16029 transitions. [2024-12-02 13:44:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-12-02 13:44:49,499 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.029411764705882) internal successors, (171), 34 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 13:44:49,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:49,518 INFO L225 Difference]: With dead ends: 11840 [2024-12-02 13:44:49,518 INFO L226 Difference]: Without dead ends: 10703 [2024-12-02 13:44:49,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4121 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3069, Invalid=9141, Unknown=0, NotChecked=0, Total=12210 [2024-12-02 13:44:49,524 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 3096 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3096 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:49,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3096 Valid, 1349 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 13:44:49,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10703 states. [2024-12-02 13:44:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10703 to 7775. [2024-12-02 13:44:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7775 states, 7774 states have (on average 1.3251865191664522) internal successors, (10302), 7774 states have internal predecessors, (10302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7775 states to 7775 states and 10302 transitions. [2024-12-02 13:44:49,743 INFO L78 Accepts]: Start accepts. Automaton has 7775 states and 10302 transitions. Word has length 68 [2024-12-02 13:44:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:49,744 INFO L471 AbstractCegarLoop]: Abstraction has 7775 states and 10302 transitions. [2024-12-02 13:44:49,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.029411764705882) internal successors, (171), 34 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7775 states and 10302 transitions. [2024-12-02 13:44:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 13:44:49,745 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:49,745 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:49,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:44:49,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 13:44:49,949 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:49,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:49,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2021712871, now seen corresponding path program 1 times [2024-12-02 13:44:49,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:49,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690434679] [2024-12-02 13:44:49,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:49,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:49,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:49,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690434679] [2024-12-02 13:44:49,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690434679] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:49,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:49,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:49,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741942813] [2024-12-02 13:44:49,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:49,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:49,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:49,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:49,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:49,987 INFO L87 Difference]: Start difference. First operand 7775 states and 10302 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:50,124 INFO L93 Difference]: Finished difference Result 15606 states and 20771 transitions. [2024-12-02 13:44:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:50,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 13:44:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:50,141 INFO L225 Difference]: With dead ends: 15606 [2024-12-02 13:44:50,141 INFO L226 Difference]: Without dead ends: 8508 [2024-12-02 13:44:50,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:50,147 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 40 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:50,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 179 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2024-12-02 13:44:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8065. [2024-12-02 13:44:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8065 states, 8064 states have (on average 1.3096478174603174) internal successors, (10561), 8064 states have internal predecessors, (10561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8065 states to 8065 states and 10561 transitions. [2024-12-02 13:44:50,457 INFO L78 Accepts]: Start accepts. Automaton has 8065 states and 10561 transitions. Word has length 69 [2024-12-02 13:44:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:50,458 INFO L471 AbstractCegarLoop]: Abstraction has 8065 states and 10561 transitions. [2024-12-02 13:44:50,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 8065 states and 10561 transitions. [2024-12-02 13:44:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 13:44:50,459 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:50,459 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:50,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:44:50,460 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:50,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash 221324715, now seen corresponding path program 1 times [2024-12-02 13:44:50,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:50,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649800862] [2024-12-02 13:44:50,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:50,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:50,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649800862] [2024-12-02 13:44:50,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649800862] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:44:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791996216] [2024-12-02 13:44:50,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:50,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:44:50,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:44:50,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:44:50,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:44:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:50,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:44:50,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:44:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:50,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:44:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:50,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791996216] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:44:50,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:44:50,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 13:44:50,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123796720] [2024-12-02 13:44:50,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:44:50,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:44:50,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:50,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:44:50,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:44:50,922 INFO L87 Difference]: Start difference. First operand 8065 states and 10561 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:51,160 INFO L93 Difference]: Finished difference Result 11611 states and 15120 transitions. [2024-12-02 13:44:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:44:51,160 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 69 [2024-12-02 13:44:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:51,169 INFO L225 Difference]: With dead ends: 11611 [2024-12-02 13:44:51,169 INFO L226 Difference]: Without dead ends: 9193 [2024-12-02 13:44:51,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:44:51,172 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 317 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:51,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 261 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:44:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9193 states. [2024-12-02 13:44:51,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9193 to 9092. [2024-12-02 13:44:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9092 states, 9091 states have (on average 1.2895171048289518) internal successors, (11723), 9091 states have internal predecessors, (11723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9092 states to 9092 states and 11723 transitions. [2024-12-02 13:44:51,436 INFO L78 Accepts]: Start accepts. Automaton has 9092 states and 11723 transitions. Word has length 69 [2024-12-02 13:44:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:51,436 INFO L471 AbstractCegarLoop]: Abstraction has 9092 states and 11723 transitions. [2024-12-02 13:44:51,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9092 states and 11723 transitions. [2024-12-02 13:44:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 13:44:51,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:51,438 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:51,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:44:51,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 13:44:51,638 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:51,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash 174114667, now seen corresponding path program 1 times [2024-12-02 13:44:51,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:51,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033097508] [2024-12-02 13:44:51,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:51,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:51,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:51,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033097508] [2024-12-02 13:44:51,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033097508] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:51,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:51,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:51,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587518626] [2024-12-02 13:44:51,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:51,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:51,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:51,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:51,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:51,691 INFO L87 Difference]: Start difference. First operand 9092 states and 11723 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:52,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:52,101 INFO L93 Difference]: Finished difference Result 22671 states and 29246 transitions. [2024-12-02 13:44:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:52,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 13:44:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:52,120 INFO L225 Difference]: With dead ends: 22671 [2024-12-02 13:44:52,120 INFO L226 Difference]: Without dead ends: 14139 [2024-12-02 13:44:52,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:52,129 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 33 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:52,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 212 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:52,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14139 states. [2024-12-02 13:44:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14139 to 14083. [2024-12-02 13:44:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14083 states, 14082 states have (on average 1.2704871467121148) internal successors, (17891), 14082 states have internal predecessors, (17891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14083 states to 14083 states and 17891 transitions. [2024-12-02 13:44:52,592 INFO L78 Accepts]: Start accepts. Automaton has 14083 states and 17891 transitions. Word has length 69 [2024-12-02 13:44:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:52,592 INFO L471 AbstractCegarLoop]: Abstraction has 14083 states and 17891 transitions. [2024-12-02 13:44:52,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 14083 states and 17891 transitions. [2024-12-02 13:44:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 13:44:52,594 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:52,594 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:52,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 13:44:52,594 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:52,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1769959019, now seen corresponding path program 1 times [2024-12-02 13:44:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147331224] [2024-12-02 13:44:52,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:52,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:52,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147331224] [2024-12-02 13:44:52,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147331224] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:44:52,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:44:52,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:44:52,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393545238] [2024-12-02 13:44:52,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:44:52,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:44:52,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:52,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:44:52,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:52,646 INFO L87 Difference]: Start difference. First operand 14083 states and 17891 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:53,005 INFO L93 Difference]: Finished difference Result 17933 states and 22679 transitions. [2024-12-02 13:44:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:44:53,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 13:44:53,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:53,024 INFO L225 Difference]: With dead ends: 17933 [2024-12-02 13:44:53,024 INFO L226 Difference]: Without dead ends: 10748 [2024-12-02 13:44:53,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:44:53,029 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 37 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:53,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 203 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:44:53,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10748 states. [2024-12-02 13:44:53,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10748 to 8261. [2024-12-02 13:44:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8261 states, 8260 states have (on average 1.2453995157384987) internal successors, (10287), 8260 states have internal predecessors, (10287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 10287 transitions. [2024-12-02 13:44:53,430 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 10287 transitions. Word has length 69 [2024-12-02 13:44:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:53,430 INFO L471 AbstractCegarLoop]: Abstraction has 8261 states and 10287 transitions. [2024-12-02 13:44:53,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 10287 transitions. [2024-12-02 13:44:53,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 13:44:53,431 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:53,431 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:53,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 13:44:53,432 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:53,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1722748971, now seen corresponding path program 1 times [2024-12-02 13:44:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:53,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134216523] [2024-12-02 13:44:53,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:53,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:53,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:53,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134216523] [2024-12-02 13:44:53,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134216523] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:44:53,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155194900] [2024-12-02 13:44:53,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:53,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:44:53,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:44:53,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:44:53,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:44:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:53,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:44:53,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:44:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:53,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:44:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:53,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155194900] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:44:53,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:44:53,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 13:44:53,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653401045] [2024-12-02 13:44:53,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:44:53,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:44:53,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:53,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:44:53,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:44:53,943 INFO L87 Difference]: Start difference. First operand 8261 states and 10287 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:44:54,237 INFO L93 Difference]: Finished difference Result 10912 states and 13626 transitions. [2024-12-02 13:44:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:44:54,238 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 69 [2024-12-02 13:44:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:44:54,245 INFO L225 Difference]: With dead ends: 10912 [2024-12-02 13:44:54,245 INFO L226 Difference]: Without dead ends: 7084 [2024-12-02 13:44:54,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:44:54,249 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 313 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:44:54,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 326 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:44:54,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7084 states. [2024-12-02 13:44:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7084 to 7082. [2024-12-02 13:44:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7082 states, 7081 states have (on average 1.2340064962575907) internal successors, (8738), 7081 states have internal predecessors, (8738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7082 states to 7082 states and 8738 transitions. [2024-12-02 13:44:54,430 INFO L78 Accepts]: Start accepts. Automaton has 7082 states and 8738 transitions. Word has length 69 [2024-12-02 13:44:54,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:44:54,430 INFO L471 AbstractCegarLoop]: Abstraction has 7082 states and 8738 transitions. [2024-12-02 13:44:54,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:44:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 7082 states and 8738 transitions. [2024-12-02 13:44:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 13:44:54,431 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:44:54,431 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:44:54,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:44:54,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-12-02 13:44:54,632 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:44:54,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:44:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash 572641458, now seen corresponding path program 1 times [2024-12-02 13:44:54,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:44:54,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149332630] [2024-12-02 13:44:54,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:54,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:44:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:55,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:44:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149332630] [2024-12-02 13:44:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149332630] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:44:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491385918] [2024-12-02 13:44:55,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:44:55,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:44:55,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:44:55,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:44:55,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:44:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:44:55,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 13:44:55,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:44:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:56,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:44:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:44:58,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491385918] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:44:58,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:44:58,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 38 [2024-12-02 13:44:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807004512] [2024-12-02 13:44:58,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:44:58,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 13:44:58,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:44:58,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 13:44:58,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1246, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 13:44:58,085 INFO L87 Difference]: Start difference. First operand 7082 states and 8738 transitions. Second operand has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:45:08,773 INFO L93 Difference]: Finished difference Result 40776 states and 50337 transitions. [2024-12-02 13:45:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-12-02 13:45:08,774 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 13:45:08,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:45:08,796 INFO L225 Difference]: With dead ends: 40776 [2024-12-02 13:45:08,796 INFO L226 Difference]: Without dead ends: 33732 [2024-12-02 13:45:08,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11382 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=5611, Invalid=24145, Unknown=0, NotChecked=0, Total=29756 [2024-12-02 13:45:08,806 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 3771 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3771 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:45:08,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3771 Valid, 1902 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1900 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 13:45:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33732 states. [2024-12-02 13:45:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33732 to 23740. [2024-12-02 13:45:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23740 states, 23739 states have (on average 1.2266734066304394) internal successors, (29120), 23739 states have internal predecessors, (29120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23740 states to 23740 states and 29120 transitions. [2024-12-02 13:45:09,788 INFO L78 Accepts]: Start accepts. Automaton has 23740 states and 29120 transitions. Word has length 70 [2024-12-02 13:45:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:45:09,788 INFO L471 AbstractCegarLoop]: Abstraction has 23740 states and 29120 transitions. [2024-12-02 13:45:09,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.131578947368421) internal successors, (195), 38 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 23740 states and 29120 transitions. [2024-12-02 13:45:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 13:45:09,794 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:45:09,794 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 13:45:09,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:45:09,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 13:45:09,994 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:45:09,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:45:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1917475204, now seen corresponding path program 1 times [2024-12-02 13:45:09,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:45:09,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234665048] [2024-12-02 13:45:09,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:45:09,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:45:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:45:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 13:45:10,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:45:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234665048] [2024-12-02 13:45:10,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234665048] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:45:10,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:45:10,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:45:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389446695] [2024-12-02 13:45:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:45:10,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:45:10,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:45:10,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:45:10,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:45:10,055 INFO L87 Difference]: Start difference. First operand 23740 states and 29120 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:45:10,692 INFO L93 Difference]: Finished difference Result 41995 states and 51393 transitions. [2024-12-02 13:45:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:45:10,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 111 [2024-12-02 13:45:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:45:10,708 INFO L225 Difference]: With dead ends: 41995 [2024-12-02 13:45:10,708 INFO L226 Difference]: Without dead ends: 19705 [2024-12-02 13:45:10,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:45:10,722 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 38 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:45:10,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 173 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:45:10,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19705 states. [2024-12-02 13:45:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19705 to 12488. [2024-12-02 13:45:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12488 states, 12487 states have (on average 1.1952430527748859) internal successors, (14925), 12487 states have internal predecessors, (14925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12488 states to 12488 states and 14925 transitions. [2024-12-02 13:45:11,233 INFO L78 Accepts]: Start accepts. Automaton has 12488 states and 14925 transitions. Word has length 111 [2024-12-02 13:45:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:45:11,233 INFO L471 AbstractCegarLoop]: Abstraction has 12488 states and 14925 transitions. [2024-12-02 13:45:11,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand 12488 states and 14925 transitions. [2024-12-02 13:45:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 13:45:11,238 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:45:11,238 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:45:11,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 13:45:11,239 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:45:11,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:45:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash -954694683, now seen corresponding path program 1 times [2024-12-02 13:45:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:45:11,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390682487] [2024-12-02 13:45:11,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:45:11,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:45:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:45:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:45:12,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:45:12,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390682487] [2024-12-02 13:45:12,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390682487] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:45:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665018613] [2024-12-02 13:45:12,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:45:12,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:45:12,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:45:12,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:45:12,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:45:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:45:12,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 13:45:12,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:45:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:45:13,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:45:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 35 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:45:15,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665018613] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:45:15,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:45:15,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 33 [2024-12-02 13:45:15,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787659153] [2024-12-02 13:45:15,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:45:15,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 13:45:15,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:45:15,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 13:45:15,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 13:45:15,698 INFO L87 Difference]: Start difference. First operand 12488 states and 14925 transitions. Second operand has 33 states, 33 states have (on average 8.515151515151516) internal successors, (281), 33 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:45:19,109 INFO L93 Difference]: Finished difference Result 38279 states and 45913 transitions. [2024-12-02 13:45:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 13:45:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.515151515151516) internal successors, (281), 33 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-12-02 13:45:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:45:19,131 INFO L225 Difference]: With dead ends: 38279 [2024-12-02 13:45:19,132 INFO L226 Difference]: Without dead ends: 33957 [2024-12-02 13:45:19,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1031, Invalid=3661, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 13:45:19,139 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 1800 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:45:19,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 1754 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 13:45:19,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33957 states. [2024-12-02 13:45:19,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33957 to 15155. [2024-12-02 13:45:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15155 states, 15154 states have (on average 1.1930843341691963) internal successors, (18080), 15154 states have internal predecessors, (18080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15155 states to 15155 states and 18080 transitions. [2024-12-02 13:45:19,803 INFO L78 Accepts]: Start accepts. Automaton has 15155 states and 18080 transitions. Word has length 112 [2024-12-02 13:45:19,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:45:19,804 INFO L471 AbstractCegarLoop]: Abstraction has 15155 states and 18080 transitions. [2024-12-02 13:45:19,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.515151515151516) internal successors, (281), 33 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:19,804 INFO L276 IsEmpty]: Start isEmpty. Operand 15155 states and 18080 transitions. [2024-12-02 13:45:19,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 13:45:19,807 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:45:19,807 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:45:19,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:45:20,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:45:20,007 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:45:20,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:45:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -554514078, now seen corresponding path program 1 times [2024-12-02 13:45:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:45:20,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648881307] [2024-12-02 13:45:20,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:45:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:45:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:45:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 63 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 13:45:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:45:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648881307] [2024-12-02 13:45:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648881307] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:45:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248810052] [2024-12-02 13:45:20,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:45:20,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:45:20,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:45:20,283 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:45:20,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:45:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:45:20,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 13:45:20,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:45:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:45:21,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:45:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 39 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:45:24,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248810052] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:45:24,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:45:24,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 36 [2024-12-02 13:45:24,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621126073] [2024-12-02 13:45:24,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:45:24,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 13:45:24,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:45:24,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 13:45:24,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1113, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 13:45:24,070 INFO L87 Difference]: Start difference. First operand 15155 states and 18080 transitions. Second operand has 36 states, 36 states have (on average 8.0) internal successors, (288), 36 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:37,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:45:37,066 INFO L93 Difference]: Finished difference Result 58684 states and 69789 transitions. [2024-12-02 13:45:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-12-02 13:45:37,066 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.0) internal successors, (288), 36 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-12-02 13:45:37,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:45:37,097 INFO L225 Difference]: With dead ends: 58684 [2024-12-02 13:45:37,097 INFO L226 Difference]: Without dead ends: 48789 [2024-12-02 13:45:37,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9275 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=5121, Invalid=21939, Unknown=0, NotChecked=0, Total=27060 [2024-12-02 13:45:37,108 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 4202 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:45:37,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4202 Valid, 2190 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 13:45:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48789 states. [2024-12-02 13:45:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48789 to 26000. [2024-12-02 13:45:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26000 states, 25999 states have (on average 1.1861994692103544) internal successors, (30840), 25999 states have internal predecessors, (30840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26000 states to 26000 states and 30840 transitions. [2024-12-02 13:45:38,483 INFO L78 Accepts]: Start accepts. Automaton has 26000 states and 30840 transitions. Word has length 113 [2024-12-02 13:45:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:45:38,483 INFO L471 AbstractCegarLoop]: Abstraction has 26000 states and 30840 transitions. [2024-12-02 13:45:38,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.0) internal successors, (288), 36 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 26000 states and 30840 transitions. [2024-12-02 13:45:38,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 13:45:38,486 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:45:38,487 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:45:38,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:45:38,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:45:38,687 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:45:38,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:45:38,687 INFO L85 PathProgramCache]: Analyzing trace with hash 452123304, now seen corresponding path program 1 times [2024-12-02 13:45:38,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:45:38,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583766710] [2024-12-02 13:45:38,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:45:38,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:45:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:45:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 13:45:38,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:45:38,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583766710] [2024-12-02 13:45:38,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583766710] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:45:38,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:45:38,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:45:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373907110] [2024-12-02 13:45:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:45:38,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:45:38,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:45:38,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:45:38,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:45:38,728 INFO L87 Difference]: Start difference. First operand 26000 states and 30840 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:39,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:45:39,763 INFO L93 Difference]: Finished difference Result 40041 states and 47335 transitions. [2024-12-02 13:45:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:45:39,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 113 [2024-12-02 13:45:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:45:39,779 INFO L225 Difference]: With dead ends: 40041 [2024-12-02 13:45:39,779 INFO L226 Difference]: Without dead ends: 24168 [2024-12-02 13:45:39,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:45:39,784 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 25 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:45:39,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 216 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:45:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24168 states. [2024-12-02 13:45:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24168 to 24020. [2024-12-02 13:45:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24020 states, 24019 states have (on average 1.1726549814730005) internal successors, (28166), 24019 states have internal predecessors, (28166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24020 states to 24020 states and 28166 transitions. [2024-12-02 13:45:40,984 INFO L78 Accepts]: Start accepts. Automaton has 24020 states and 28166 transitions. Word has length 113 [2024-12-02 13:45:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:45:40,984 INFO L471 AbstractCegarLoop]: Abstraction has 24020 states and 28166 transitions. [2024-12-02 13:45:40,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 24020 states and 28166 transitions. [2024-12-02 13:45:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:45:40,989 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:45:40,989 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:45:40,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 13:45:40,990 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:45:40,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:45:40,990 INFO L85 PathProgramCache]: Analyzing trace with hash -153269727, now seen corresponding path program 1 times [2024-12-02 13:45:40,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:45:40,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176921793] [2024-12-02 13:45:40,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:45:40,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:45:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:45:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 13:45:41,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:45:41,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176921793] [2024-12-02 13:45:41,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176921793] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:45:41,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:45:41,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:45:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310996741] [2024-12-02 13:45:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:45:41,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:45:41,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:45:41,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:45:41,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:45:41,041 INFO L87 Difference]: Start difference. First operand 24020 states and 28166 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:41,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:45:41,864 INFO L93 Difference]: Finished difference Result 29377 states and 34390 transitions. [2024-12-02 13:45:41,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:45:41,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 114 [2024-12-02 13:45:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:45:41,877 INFO L225 Difference]: With dead ends: 29377 [2024-12-02 13:45:41,877 INFO L226 Difference]: Without dead ends: 16494 [2024-12-02 13:45:41,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:45:41,884 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 36 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:45:41,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 190 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:45:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16494 states. [2024-12-02 13:45:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16494 to 15714. [2024-12-02 13:45:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15714 states, 15713 states have (on average 1.1519760707694267) internal successors, (18101), 15713 states have internal predecessors, (18101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15714 states to 15714 states and 18101 transitions. [2024-12-02 13:45:42,590 INFO L78 Accepts]: Start accepts. Automaton has 15714 states and 18101 transitions. Word has length 114 [2024-12-02 13:45:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:45:42,590 INFO L471 AbstractCegarLoop]: Abstraction has 15714 states and 18101 transitions. [2024-12-02 13:45:42,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:45:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 15714 states and 18101 transitions. [2024-12-02 13:45:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:45:42,592 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:45:42,592 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:45:42,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 13:45:42,592 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:45:42,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:45:42,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2125181355, now seen corresponding path program 1 times [2024-12-02 13:45:42,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:45:42,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740474575] [2024-12-02 13:45:42,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:45:42,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:45:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:45:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:45:43,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:45:43,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740474575] [2024-12-02 13:45:43,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740474575] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:45:43,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511502274] [2024-12-02 13:45:43,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:45:43,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:45:43,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:45:43,154 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:45:43,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:45:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:45:43,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 13:45:43,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:45:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:45:44,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:45:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:45:48,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511502274] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:45:48,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:45:48,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 22] total 51 [2024-12-02 13:45:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090553162] [2024-12-02 13:45:48,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:45:48,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 13:45:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:45:48,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 13:45:48,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=2281, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 13:45:48,772 INFO L87 Difference]: Start difference. First operand 15714 states and 18101 transitions. Second operand has 51 states, 51 states have (on average 6.2745098039215685) internal successors, (320), 51 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:46:18,136 INFO L93 Difference]: Finished difference Result 30074 states and 34916 transitions. [2024-12-02 13:46:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-12-02 13:46:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.2745098039215685) internal successors, (320), 51 states have internal predecessors, (320), 0 states have call successors, (0), 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 114 [2024-12-02 13:46:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:46:18,150 INFO L225 Difference]: With dead ends: 30074 [2024-12-02 13:46:18,150 INFO L226 Difference]: Without dead ends: 21825 [2024-12-02 13:46:18,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13205 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=7021, Invalid=35209, Unknown=0, NotChecked=0, Total=42230 [2024-12-02 13:46:18,156 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 4086 mSDsluCounter, 4737 mSDsCounter, 0 mSdLazyCounter, 4375 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4946 SdHoareTripleChecker+Invalid, 4552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 4375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:46:18,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4946 Invalid, 4552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 4375 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 13:46:18,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21825 states. [2024-12-02 13:46:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21825 to 18526. [2024-12-02 13:46:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18526 states, 18525 states have (on average 1.1494197031039137) internal successors, (21293), 18525 states have internal predecessors, (21293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18526 states to 18526 states and 21293 transitions. [2024-12-02 13:46:19,072 INFO L78 Accepts]: Start accepts. Automaton has 18526 states and 21293 transitions. Word has length 114 [2024-12-02 13:46:19,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:46:19,072 INFO L471 AbstractCegarLoop]: Abstraction has 18526 states and 21293 transitions. [2024-12-02 13:46:19,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.2745098039215685) internal successors, (320), 51 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 18526 states and 21293 transitions. [2024-12-02 13:46:19,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 13:46:19,075 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:46:19,075 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:46:19,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:46:19,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 13:46:19,275 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:46:19,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:46:19,276 INFO L85 PathProgramCache]: Analyzing trace with hash 149080658, now seen corresponding path program 1 times [2024-12-02 13:46:19,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:46:19,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244134101] [2024-12-02 13:46:19,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:46:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:46:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:46:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:46:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:46:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244134101] [2024-12-02 13:46:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244134101] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:46:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136369811] [2024-12-02 13:46:20,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:46:20,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:46:20,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:46:20,025 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:46:20,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:46:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:46:20,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 13:46:20,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:46:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:46:21,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:46:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:46:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136369811] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:46:24,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:46:24,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 53 [2024-12-02 13:46:24,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332863100] [2024-12-02 13:46:24,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:46:24,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 13:46:24,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:46:24,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 13:46:24,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=2462, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 13:46:24,930 INFO L87 Difference]: Start difference. First operand 18526 states and 21293 transitions. Second operand has 53 states, 53 states have (on average 6.226415094339623) internal successors, (330), 53 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:37,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:46:37,275 INFO L93 Difference]: Finished difference Result 43303 states and 49836 transitions. [2024-12-02 13:46:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-12-02 13:46:37,275 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.226415094339623) internal successors, (330), 53 states have internal predecessors, (330), 0 states have call successors, (0), 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 115 [2024-12-02 13:46:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:46:37,295 INFO L225 Difference]: With dead ends: 43303 [2024-12-02 13:46:37,295 INFO L226 Difference]: Without dead ends: 32997 [2024-12-02 13:46:37,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6122 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=3950, Invalid=17512, Unknown=0, NotChecked=0, Total=21462 [2024-12-02 13:46:37,301 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 3114 mSDsluCounter, 4388 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 3897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:46:37,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3114 Valid, 4649 Invalid, 3897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 13:46:37,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32997 states. [2024-12-02 13:46:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32997 to 21494. [2024-12-02 13:46:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21494 states, 21493 states have (on average 1.146512818126832) internal successors, (24642), 21493 states have internal predecessors, (24642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21494 states to 21494 states and 24642 transitions. [2024-12-02 13:46:38,787 INFO L78 Accepts]: Start accepts. Automaton has 21494 states and 24642 transitions. Word has length 115 [2024-12-02 13:46:38,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:46:38,788 INFO L471 AbstractCegarLoop]: Abstraction has 21494 states and 24642 transitions. [2024-12-02 13:46:38,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 6.226415094339623) internal successors, (330), 53 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:38,788 INFO L276 IsEmpty]: Start isEmpty. Operand 21494 states and 24642 transitions. [2024-12-02 13:46:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 13:46:38,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:46:38,792 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:46:38,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 13:46:38,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:46:38,993 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:46:38,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:46:38,993 INFO L85 PathProgramCache]: Analyzing trace with hash -422232327, now seen corresponding path program 1 times [2024-12-02 13:46:38,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:46:38,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441085920] [2024-12-02 13:46:38,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:46:38,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:46:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:46:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 37 proven. 50 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 13:46:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:46:39,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441085920] [2024-12-02 13:46:39,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441085920] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:46:39,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696907945] [2024-12-02 13:46:39,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:46:39,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:46:39,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:46:39,271 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:46:39,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:46:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:46:39,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 13:46:39,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:46:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 53 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:46:40,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:46:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 21 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:46:42,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696907945] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:46:42,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:46:42,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 15] total 34 [2024-12-02 13:46:42,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249321664] [2024-12-02 13:46:42,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:46:42,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 13:46:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:46:42,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 13:46:42,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 13:46:42,401 INFO L87 Difference]: Start difference. First operand 21494 states and 24642 transitions. Second operand has 34 states, 34 states have (on average 9.294117647058824) internal successors, (316), 34 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:45,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:46:45,676 INFO L93 Difference]: Finished difference Result 51271 states and 58837 transitions. [2024-12-02 13:46:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 13:46:45,677 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.294117647058824) internal successors, (316), 34 states have internal predecessors, (316), 0 states have call successors, (0), 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 116 [2024-12-02 13:46:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:46:45,707 INFO L225 Difference]: With dead ends: 51271 [2024-12-02 13:46:45,708 INFO L226 Difference]: Without dead ends: 36052 [2024-12-02 13:46:45,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=707, Invalid=2953, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 13:46:45,718 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 996 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:46:45,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1293 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:46:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36052 states. [2024-12-02 13:46:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36052 to 24431. [2024-12-02 13:46:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24431 states, 24430 states have (on average 1.1438804748260336) internal successors, (27945), 24430 states have internal predecessors, (27945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24431 states to 24431 states and 27945 transitions. [2024-12-02 13:46:47,571 INFO L78 Accepts]: Start accepts. Automaton has 24431 states and 27945 transitions. Word has length 116 [2024-12-02 13:46:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:46:47,571 INFO L471 AbstractCegarLoop]: Abstraction has 24431 states and 27945 transitions. [2024-12-02 13:46:47,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.294117647058824) internal successors, (316), 34 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 24431 states and 27945 transitions. [2024-12-02 13:46:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 13:46:47,575 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:46:47,576 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:46:47,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 13:46:47,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 13:46:47,776 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:46:47,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:46:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash -416753711, now seen corresponding path program 1 times [2024-12-02 13:46:47,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:46:47,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879399699] [2024-12-02 13:46:47,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:46:47,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:46:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:46:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 64 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 13:46:47,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:46:47,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879399699] [2024-12-02 13:46:47,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879399699] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:46:47,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838693976] [2024-12-02 13:46:47,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:46:47,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:46:47,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:46:47,854 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:46:47,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 13:46:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:46:47,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:46:47,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:46:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 64 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 13:46:48,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:46:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 64 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 13:46:48,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838693976] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:46:48,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:46:48,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-12-02 13:46:48,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350386385] [2024-12-02 13:46:48,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:46:48,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 13:46:48,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:46:48,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 13:46:48,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:46:48,190 INFO L87 Difference]: Start difference. First operand 24431 states and 27945 transitions. Second operand has 16 states, 16 states have (on average 13.1875) internal successors, (211), 15 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:46:49,657 INFO L93 Difference]: Finished difference Result 28591 states and 32763 transitions. [2024-12-02 13:46:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:46:49,657 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.1875) internal successors, (211), 15 states have internal predecessors, (211), 0 states have call successors, (0), 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 116 [2024-12-02 13:46:49,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:46:49,670 INFO L225 Difference]: With dead ends: 28591 [2024-12-02 13:46:49,670 INFO L226 Difference]: Without dead ends: 23282 [2024-12-02 13:46:49,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2024-12-02 13:46:49,674 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 175 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:46:49,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 467 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:46:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23282 states. [2024-12-02 13:46:51,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23282 to 22754. [2024-12-02 13:46:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22754 states, 22753 states have (on average 1.1416956005801433) internal successors, (25977), 22753 states have internal predecessors, (25977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22754 states to 22754 states and 25977 transitions. [2024-12-02 13:46:51,112 INFO L78 Accepts]: Start accepts. Automaton has 22754 states and 25977 transitions. Word has length 116 [2024-12-02 13:46:51,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:46:51,112 INFO L471 AbstractCegarLoop]: Abstraction has 22754 states and 25977 transitions. [2024-12-02 13:46:51,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.1875) internal successors, (211), 15 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:46:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 22754 states and 25977 transitions. [2024-12-02 13:46:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 13:46:51,115 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:46:51,115 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:46:51,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 13:46:51,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:46:51,315 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:46:51,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:46:51,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2073801956, now seen corresponding path program 1 times [2024-12-02 13:46:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:46:51,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199510997] [2024-12-02 13:46:51,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:46:51,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:46:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:46:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 37 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:46:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:46:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199510997] [2024-12-02 13:46:52,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199510997] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:46:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579576968] [2024-12-02 13:46:52,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:46:52,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:46:52,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:46:52,200 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:46:52,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 13:46:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:46:52,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 13:46:52,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:46:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 37 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:46:55,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:47:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:47:02,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579576968] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:47:02,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:47:02,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 24] total 61 [2024-12-02 13:47:02,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645841957] [2024-12-02 13:47:02,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:47:02,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 13:47:02,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:47:02,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 13:47:02,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=3233, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 13:47:02,202 INFO L87 Difference]: Start difference. First operand 22754 states and 25977 transitions. Second operand has 61 states, 61 states have (on average 5.311475409836065) internal successors, (324), 61 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:47:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:47:54,893 INFO L93 Difference]: Finished difference Result 49878 states and 57014 transitions. [2024-12-02 13:47:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2024-12-02 13:47:54,894 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.311475409836065) internal successors, (324), 61 states have internal predecessors, (324), 0 states have call successors, (0), 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 117 [2024-12-02 13:47:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:47:54,919 INFO L225 Difference]: With dead ends: 49878 [2024-12-02 13:47:54,919 INFO L226 Difference]: Without dead ends: 40865 [2024-12-02 13:47:54,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30228 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=13709, Invalid=66663, Unknown=0, NotChecked=0, Total=80372 [2024-12-02 13:47:54,927 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 4009 mSDsluCounter, 5582 mSDsCounter, 0 mSdLazyCounter, 5064 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4009 SdHoareTripleChecker+Valid, 5828 SdHoareTripleChecker+Invalid, 5275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 5064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:47:54,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4009 Valid, 5828 Invalid, 5275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 5064 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-12-02 13:47:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40865 states. [2024-12-02 13:47:57,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40865 to 25614. [2024-12-02 13:47:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25614 states, 25613 states have (on average 1.1407488384804592) internal successors, (29218), 25613 states have internal predecessors, (29218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:47:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25614 states to 25614 states and 29218 transitions. [2024-12-02 13:47:57,045 INFO L78 Accepts]: Start accepts. Automaton has 25614 states and 29218 transitions. Word has length 117 [2024-12-02 13:47:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:47:57,045 INFO L471 AbstractCegarLoop]: Abstraction has 25614 states and 29218 transitions. [2024-12-02 13:47:57,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.311475409836065) internal successors, (324), 61 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:47:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 25614 states and 29218 transitions. [2024-12-02 13:47:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 13:47:57,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:47:57,048 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:47:57,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 13:47:57,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 13:47:57,248 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:47:57,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:47:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1887636098, now seen corresponding path program 1 times [2024-12-02 13:47:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:47:57,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116595874] [2024-12-02 13:47:57,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:47:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:47:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:47:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 36 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:47:58,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:47:58,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116595874] [2024-12-02 13:47:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116595874] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:47:58,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314063223] [2024-12-02 13:47:58,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:47:58,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:47:58,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:47:58,171 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:47:58,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 13:47:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:47:58,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 13:47:58,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:48:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 36 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:48:03,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:48:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:48:14,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314063223] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:48:14,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:48:14,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 30, 28] total 77 [2024-12-02 13:48:14,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332389836] [2024-12-02 13:48:14,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:48:14,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-12-02 13:48:14,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:48:14,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-12-02 13:48:14,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=5179, Unknown=0, NotChecked=0, Total=5852 [2024-12-02 13:48:14,679 INFO L87 Difference]: Start difference. First operand 25614 states and 29218 transitions. Second operand has 77 states, 77 states have (on average 4.12987012987013) internal successors, (318), 77 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:52:51,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:52:51,007 INFO L93 Difference]: Finished difference Result 45020 states and 51170 transitions. [2024-12-02 13:52:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 549 states. [2024-12-02 13:52:51,007 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.12987012987013) internal successors, (318), 77 states have internal predecessors, (318), 0 states have call successors, (0), 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 117 [2024-12-02 13:52:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:52:51,032 INFO L225 Difference]: With dead ends: 45020 [2024-12-02 13:52:51,032 INFO L226 Difference]: Without dead ends: 37223 [2024-12-02 13:52:51,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 616 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172531 ImplicationChecksByTransitivity, 265.0s TimeCoverageRelationStatistics Valid=56622, Invalid=324684, Unknown=0, NotChecked=0, Total=381306 [2024-12-02 13:52:51,046 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 9308 mSDsluCounter, 7923 mSDsCounter, 0 mSdLazyCounter, 8181 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9308 SdHoareTripleChecker+Valid, 8099 SdHoareTripleChecker+Invalid, 8686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 8181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:52:51,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9308 Valid, 8099 Invalid, 8686 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [505 Valid, 8181 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-12-02 13:52:51,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37223 states. [2024-12-02 13:52:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37223 to 24759. [2024-12-02 13:52:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24759 states, 24758 states have (on average 1.141328055577995) internal successors, (28257), 24758 states have internal predecessors, (28257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:52:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24759 states to 24759 states and 28257 transitions. [2024-12-02 13:52:53,171 INFO L78 Accepts]: Start accepts. Automaton has 24759 states and 28257 transitions. Word has length 117 [2024-12-02 13:52:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:52:53,172 INFO L471 AbstractCegarLoop]: Abstraction has 24759 states and 28257 transitions. [2024-12-02 13:52:53,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.12987012987013) internal successors, (318), 77 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:52:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 24759 states and 28257 transitions. [2024-12-02 13:52:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 13:52:53,174 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:52:53,174 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 13:52:53,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-12-02 13:52:53,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:52:53,375 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:52:53,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:52:53,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1733279436, now seen corresponding path program 1 times [2024-12-02 13:52:53,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:52:53,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073620777] [2024-12-02 13:52:53,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:52:53,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:52:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:52:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 51 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 13:52:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:52:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073620777] [2024-12-02 13:52:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073620777] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:52:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255158321] [2024-12-02 13:52:53,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:52:53,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:52:53,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:52:53,447 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:52:53,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 13:52:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:52:53,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 13:52:53,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:52:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 51 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 13:52:53,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:52:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 51 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 13:52:53,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255158321] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:52:53,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:52:53,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-12-02 13:52:53,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677465687] [2024-12-02 13:52:53,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:52:53,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:52:53,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:52:53,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:52:53,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:52:53,625 INFO L87 Difference]: Start difference. First operand 24759 states and 28257 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:52:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:52:55,721 INFO L93 Difference]: Finished difference Result 29186 states and 33374 transitions. [2024-12-02 13:52:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:52:55,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 117 [2024-12-02 13:52:55,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:52:55,736 INFO L225 Difference]: With dead ends: 29186 [2024-12-02 13:52:55,736 INFO L226 Difference]: Without dead ends: 24141 [2024-12-02 13:52:55,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:52:55,739 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 111 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:52:55,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 201 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:52:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24141 states. [2024-12-02 13:52:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24141 to 24139. [2024-12-02 13:52:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24139 states, 24138 states have (on average 1.1406495981440052) internal successors, (27533), 24138 states have internal predecessors, (27533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:52:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24139 states to 24139 states and 27533 transitions. [2024-12-02 13:52:57,780 INFO L78 Accepts]: Start accepts. Automaton has 24139 states and 27533 transitions. Word has length 117 [2024-12-02 13:52:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:52:57,780 INFO L471 AbstractCegarLoop]: Abstraction has 24139 states and 27533 transitions. [2024-12-02 13:52:57,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 13:52:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand 24139 states and 27533 transitions. [2024-12-02 13:52:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 13:52:57,782 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:52:57,782 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:52:57,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 13:52:57,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:52:57,983 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:52:57,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:52:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1640444632, now seen corresponding path program 1 times [2024-12-02 13:52:57,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:52:57,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271315086] [2024-12-02 13:52:57,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:52:57,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:52:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:52:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 27 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:52:59,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:52:59,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271315086] [2024-12-02 13:52:59,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271315086] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:52:59,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856060346] [2024-12-02 13:52:59,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:52:59,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:52:59,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:52:59,765 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:52:59,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0893c88-4c17-44fb-b17b-0e50c06d5d10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 13:52:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:52:59,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-12-02 13:52:59,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:53:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 27 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:53:04,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:53:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:53:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856060346] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:53:17,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:53:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 32] total 86 [2024-12-02 13:53:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702779792] [2024-12-02 13:53:17,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:53:17,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-12-02 13:53:17,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:53:17,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-12-02 13:53:17,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=659, Invalid=6651, Unknown=0, NotChecked=0, Total=7310 [2024-12-02 13:53:17,915 INFO L87 Difference]: Start difference. First operand 24139 states and 27533 transitions. Second operand has 86 states, 86 states have (on average 3.9069767441860463) internal successors, (336), 86 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)