./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d1f3c30f17cc68a40d1b0b31634de48071c9ae3c0808bd553c6c6ce86d938069 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:03:26,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:03:26,774 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:03:26,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:03:26,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:03:26,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:03:26,805 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:03:26,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:03:26,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:03:26,806 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:03:26,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:03:26,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:03:26,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:03:26,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:03:26,807 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:03:26,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:03:26,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:03:26,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:03:26,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:03:26,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:03:26,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:03:26,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:03:26,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:03:26,808 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:03:26,809 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:03:26,809 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:03:26,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:03:26,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:03:26,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:03:26,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:26,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:03:26,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:03:26,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:03:26,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:03:26,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:26,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:03:26,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:03:26,812 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:03:26,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:03:26,812 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:03:26,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:03:26,813 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:03:26,813 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:03:26,813 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:03:26,813 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:03:26,813 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_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1f3c30f17cc68a40d1b0b31634de48071c9ae3c0808bd553c6c6ce86d938069 [2024-11-28 04:03:27,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:03:27,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:03:27,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:03:27,098 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:03:27,098 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:03:27,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2024-11-28 04:03:29,985 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/data/a4b71bc34/04d9ebb577704675aa837781d02a4782/FLAG7b33915dc [2024-11-28 04:03:30,260 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:03:30,261 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2024-11-28 04:03:30,273 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/data/a4b71bc34/04d9ebb577704675aa837781d02a4782/FLAG7b33915dc [2024-11-28 04:03:30,297 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/data/a4b71bc34/04d9ebb577704675aa837781d02a4782 [2024-11-28 04:03:30,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:03:30,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:03:30,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:03:30,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:03:30,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:03:30,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1470fa6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30, skipping insertion in model container [2024-11-28 04:03:30,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:03:30,469 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_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1258,1271] [2024-11-28 04:03:30,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:03:30,507 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:03:30,518 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_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1258,1271] [2024-11-28 04:03:30,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:03:30,582 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:03:30,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30 WrapperNode [2024-11-28 04:03:30,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:03:30,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:03:30,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:03:30,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:03:30,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,653 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 91 [2024-11-28 04:03:30,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:03:30,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:03:30,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:03:30,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:03:30,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,700 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:03:30,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,709 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:03:30,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:03:30,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:03:30,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:03:30,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (1/1) ... [2024-11-28 04:03:30,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:30,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:30,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:03:30,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:03:30,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:03:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:03:30,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:03:30,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:03:30,883 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:03:30,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:03:31,229 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-28 04:03:31,229 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:03:31,238 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:03:31,238 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:03:31,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:03:31 BoogieIcfgContainer [2024-11-28 04:03:31,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:03:31,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:03:31,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:03:31,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:03:31,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:03:30" (1/3) ... [2024-11-28 04:03:31,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e708bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:03:31, skipping insertion in model container [2024-11-28 04:03:31,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:30" (2/3) ... [2024-11-28 04:03:31,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e708bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:03:31, skipping insertion in model container [2024-11-28 04:03:31,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:03:31" (3/3) ... [2024-11-28 04:03:31,249 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.recount4.c [2024-11-28 04:03:31,265 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:03:31,266 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.recount4.c that has 1 procedures, 26 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:03:31,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:03:31,336 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;@2976ca00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:03:31,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:03:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:03:31,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:31,346 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:31,347 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:31,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash 4251452, now seen corresponding path program 1 times [2024-11-28 04:03:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:31,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299404437] [2024-11-28 04:03:31,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:31,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:32,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:32,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299404437] [2024-11-28 04:03:32,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299404437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:32,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:32,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:03:32,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794317025] [2024-11-28 04:03:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:32,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:32,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:32,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:32,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:32,061 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:32,194 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-28 04:03:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:32,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-28 04:03:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:32,206 INFO L225 Difference]: With dead ends: 54 [2024-11-28 04:03:32,207 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 04:03:32,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:32,215 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 97 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:32,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 50 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:32,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 04:03:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-28 04:03:32,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 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) [2024-11-28 04:03:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2024-11-28 04:03:32,254 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 11 [2024-11-28 04:03:32,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:32,254 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2024-11-28 04:03:32,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2024-11-28 04:03:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 04:03:32,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:32,258 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:32,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:03:32,258 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:32,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1949095075, now seen corresponding path program 1 times [2024-11-28 04:03:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:32,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187867403] [2024-11-28 04:03:32,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:32,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:32,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187867403] [2024-11-28 04:03:32,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187867403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:32,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864175435] [2024-11-28 04:03:32,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:32,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:32,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:32,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:03:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:32,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 04:03:32,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:33,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:33,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864175435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:33,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:33,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 14 [2024-11-28 04:03:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445851353] [2024-11-28 04:03:33,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:33,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:03:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:33,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:03:33,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:03:33,598 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:33,852 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2024-11-28 04:03:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:33,853 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 04:03:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:33,855 INFO L225 Difference]: With dead ends: 47 [2024-11-28 04:03:33,855 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 04:03:33,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:03:33,858 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 71 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:33,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 164 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 04:03:33,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2024-11-28 04:03:33,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2024-11-28 04:03:33,867 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 20 [2024-11-28 04:03:33,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:33,867 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2024-11-28 04:03:33,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2024-11-28 04:03:33,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:03:33,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:33,868 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:33,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:34,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:34,074 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:34,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:34,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1188169764, now seen corresponding path program 1 times [2024-11-28 04:03:34,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:34,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645765536] [2024-11-28 04:03:34,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:34,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:34,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645765536] [2024-11-28 04:03:34,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645765536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:34,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:34,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:03:34,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252816262] [2024-11-28 04:03:34,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:34,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:03:34,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:34,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:03:34,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:03:34,558 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:34,804 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2024-11-28 04:03:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:03:34,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 04:03:34,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:34,807 INFO L225 Difference]: With dead ends: 84 [2024-11-28 04:03:34,807 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 04:03:34,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:03:34,808 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:34,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 74 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 04:03:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2024-11-28 04:03:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.372093023255814) internal successors, (59), 43 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) [2024-11-28 04:03:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2024-11-28 04:03:34,822 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 21 [2024-11-28 04:03:34,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:34,822 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2024-11-28 04:03:34,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:34,822 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2024-11-28 04:03:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:03:34,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:34,823 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:34,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:03:34,824 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:34,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:34,825 INFO L85 PathProgramCache]: Analyzing trace with hash -256943541, now seen corresponding path program 1 times [2024-11-28 04:03:34,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:34,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070861672] [2024-11-28 04:03:34,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:34,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:35,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:35,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070861672] [2024-11-28 04:03:35,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070861672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:35,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:35,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 04:03:35,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015783644] [2024-11-28 04:03:35,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:35,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:03:35,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:35,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:03:35,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:35,606 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:35,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:35,971 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2024-11-28 04:03:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:03:35,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-28 04:03:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:35,977 INFO L225 Difference]: With dead ends: 94 [2024-11-28 04:03:35,977 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 04:03:35,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:03:35,978 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:35,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 91 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 04:03:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2024-11-28 04:03:35,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2024-11-28 04:03:35,987 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 22 [2024-11-28 04:03:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:35,988 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2024-11-28 04:03:35,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2024-11-28 04:03:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:03:35,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:35,989 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:35,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:03:35,989 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:35,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash 393053311, now seen corresponding path program 1 times [2024-11-28 04:03:35,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:35,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838827564] [2024-11-28 04:03:35,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:35,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:36,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:36,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838827564] [2024-11-28 04:03:36,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838827564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:36,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725109574] [2024-11-28 04:03:36,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:36,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:36,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:36,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:36,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:03:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:37,075 WARN L254 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 04:03:37,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:37,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725109574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:41,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:41,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 35 [2024-11-28 04:03:41,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173162413] [2024-11-28 04:03:41,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:41,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:03:41,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:41,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:03:41,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:03:41,711 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 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) [2024-11-28 04:03:43,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:43,159 INFO L93 Difference]: Finished difference Result 135 states and 184 transitions. [2024-11-28 04:03:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:03:43,160 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 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 23 [2024-11-28 04:03:43,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:43,162 INFO L225 Difference]: With dead ends: 135 [2024-11-28 04:03:43,162 INFO L226 Difference]: Without dead ends: 107 [2024-11-28 04:03:43,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=488, Invalid=2482, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 04:03:43,165 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 175 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:43,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 67 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:03:43,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-28 04:03:43,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2024-11-28 04:03:43,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 76 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 102 transitions. [2024-11-28 04:03:43,173 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 102 transitions. Word has length 23 [2024-11-28 04:03:43,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:43,174 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 102 transitions. [2024-11-28 04:03:43,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 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) [2024-11-28 04:03:43,174 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 102 transitions. [2024-11-28 04:03:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:03:43,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:43,175 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:43,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:43,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:43,380 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:43,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:43,380 INFO L85 PathProgramCache]: Analyzing trace with hash 23123751, now seen corresponding path program 1 times [2024-11-28 04:03:43,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:43,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818201731] [2024-11-28 04:03:43,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:43,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:03:43,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:43,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818201731] [2024-11-28 04:03:43,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818201731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:43,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:43,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:03:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106273864] [2024-11-28 04:03:43,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:43,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:03:43,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:43,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:03:43,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:03:43,952 INFO L87 Difference]: Start difference. First operand 77 states and 102 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:44,028 INFO L93 Difference]: Finished difference Result 143 states and 190 transitions. [2024-11-28 04:03:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:03:44,029 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-28 04:03:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:44,029 INFO L225 Difference]: With dead ends: 143 [2024-11-28 04:03:44,030 INFO L226 Difference]: Without dead ends: 100 [2024-11-28 04:03:44,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:03:44,031 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:44,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-28 04:03:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2024-11-28 04:03:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.345679012345679) internal successors, (109), 81 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 109 transitions. [2024-11-28 04:03:44,037 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 109 transitions. Word has length 41 [2024-11-28 04:03:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:44,037 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 109 transitions. [2024-11-28 04:03:44,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 109 transitions. [2024-11-28 04:03:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:03:44,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:44,039 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:44,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:03:44,039 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:44,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash -998409867, now seen corresponding path program 1 times [2024-11-28 04:03:44,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:44,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635337858] [2024-11-28 04:03:44,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:44,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:03:44,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:44,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635337858] [2024-11-28 04:03:44,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635337858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:44,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131196727] [2024-11-28 04:03:44,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:44,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:44,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:44,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:44,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:03:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:44,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:03:44,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:03:44,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:03:44,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131196727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:44,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:44,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-11-28 04:03:44,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106119455] [2024-11-28 04:03:44,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:44,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:03:44,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:44,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:03:44,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:03:44,916 INFO L87 Difference]: Start difference. First operand 82 states and 109 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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) [2024-11-28 04:03:45,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:45,077 INFO L93 Difference]: Finished difference Result 156 states and 203 transitions. [2024-11-28 04:03:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:45,078 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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 42 [2024-11-28 04:03:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:45,079 INFO L225 Difference]: With dead ends: 156 [2024-11-28 04:03:45,079 INFO L226 Difference]: Without dead ends: 102 [2024-11-28 04:03:45,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:03:45,080 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 39 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:45,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 145 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-28 04:03:45,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2024-11-28 04:03:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3493975903614457) internal successors, (112), 83 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) [2024-11-28 04:03:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 112 transitions. [2024-11-28 04:03:45,095 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 112 transitions. Word has length 42 [2024-11-28 04:03:45,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:45,095 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 112 transitions. [2024-11-28 04:03:45,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 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) [2024-11-28 04:03:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 112 transitions. [2024-11-28 04:03:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:03:45,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:45,096 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:45,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:45,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:03:45,302 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:45,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:45,302 INFO L85 PathProgramCache]: Analyzing trace with hash -379972658, now seen corresponding path program 1 times [2024-11-28 04:03:45,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:45,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074799765] [2024-11-28 04:03:45,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:45,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 27 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:46,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:46,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074799765] [2024-11-28 04:03:46,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074799765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:46,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252045510] [2024-11-28 04:03:46,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:46,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:46,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:46,546 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:46,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:03:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:46,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 04:03:46,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:47,342 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:47,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:03:48,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252045510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:48,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:48,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2024-11-28 04:03:48,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20799854] [2024-11-28 04:03:48,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:48,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:03:48,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:48,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:03:48,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:03:48,269 INFO L87 Difference]: Start difference. First operand 84 states and 112 transitions. Second operand has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:49,303 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2024-11-28 04:03:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 04:03:49,305 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 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 [2024-11-28 04:03:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:49,306 INFO L225 Difference]: With dead ends: 252 [2024-11-28 04:03:49,306 INFO L226 Difference]: Without dead ends: 201 [2024-11-28 04:03:49,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=649, Invalid=2773, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:03:49,308 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 215 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:49,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 70 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-28 04:03:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 103. [2024-11-28 04:03:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 102 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 138 transitions. [2024-11-28 04:03:49,325 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 138 transitions. Word has length 42 [2024-11-28 04:03:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:49,325 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 138 transitions. [2024-11-28 04:03:49,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 138 transitions. [2024-11-28 04:03:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 04:03:49,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:49,327 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:49,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:03:49,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:49,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:49,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1624718367, now seen corresponding path program 2 times [2024-11-28 04:03:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956606964] [2024-11-28 04:03:49,528 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:49,622 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:49,622 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:50,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956606964] [2024-11-28 04:03:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956606964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148252265] [2024-11-28 04:03:50,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:03:50,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:50,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:50,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:50,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:03:50,888 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:03:50,889 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:03:50,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-28 04:03:50,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:51,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:58,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148252265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:58,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:58,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 17] total 45 [2024-11-28 04:03:58,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503964586] [2024-11-28 04:03:58,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:58,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:03:58,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:58,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:03:58,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1740, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:03:58,474 INFO L87 Difference]: Start difference. First operand 103 states and 138 transitions. Second operand has 45 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:00,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:00,948 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2024-11-28 04:04:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 04:04:00,949 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2024-11-28 04:04:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:00,950 INFO L225 Difference]: With dead ends: 369 [2024-11-28 04:04:00,950 INFO L226 Difference]: Without dead ends: 299 [2024-11-28 04:04:00,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=839, Invalid=5013, Unknown=0, NotChecked=0, Total=5852 [2024-11-28 04:04:00,953 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 269 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:00,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 86 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:04:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-28 04:04:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 183. [2024-11-28 04:04:00,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.3516483516483517) internal successors, (246), 182 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 246 transitions. [2024-11-28 04:04:00,971 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 246 transitions. Word has length 43 [2024-11-28 04:04:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:00,971 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 246 transitions. [2024-11-28 04:04:00,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.466666666666667) internal successors, (111), 45 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 246 transitions. [2024-11-28 04:04:00,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 04:04:00,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:00,976 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:00,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:01,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:04:01,181 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:01,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:01,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1338323453, now seen corresponding path program 1 times [2024-11-28 04:04:01,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:01,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710876353] [2024-11-28 04:04:01,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:01,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:04:02,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:02,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710876353] [2024-11-28 04:04:02,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710876353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:02,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378127268] [2024-11-28 04:04:02,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:02,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:02,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:02,744 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:02,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:04:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:02,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 04:04:02,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:04:04,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:04:07,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378127268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:07,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:07,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 47 [2024-11-28 04:04:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882894707] [2024-11-28 04:04:07,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:07,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 04:04:07,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:07,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 04:04:07,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1835, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:04:07,180 INFO L87 Difference]: Start difference. First operand 183 states and 246 transitions. Second operand has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:09,933 INFO L93 Difference]: Finished difference Result 391 states and 506 transitions. [2024-11-28 04:04:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 04:04:09,934 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-28 04:04:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:09,935 INFO L225 Difference]: With dead ends: 391 [2024-11-28 04:04:09,935 INFO L226 Difference]: Without dead ends: 389 [2024-11-28 04:04:09,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1255, Invalid=6755, Unknown=0, NotChecked=0, Total=8010 [2024-11-28 04:04:09,939 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 205 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:09,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 114 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:04:09,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-28 04:04:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 202. [2024-11-28 04:04:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.3482587064676617) internal successors, (271), 201 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 271 transitions. [2024-11-28 04:04:09,951 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 271 transitions. Word has length 44 [2024-11-28 04:04:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:09,951 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 271 transitions. [2024-11-28 04:04:09,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.617021276595745) internal successors, (123), 47 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 271 transitions. [2024-11-28 04:04:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 04:04:09,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:09,953 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:09,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:04:10,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:04:10,158 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:10,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash 941706665, now seen corresponding path program 2 times [2024-11-28 04:04:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586768676] [2024-11-28 04:04:10,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:04:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:10,230 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:04:10,230 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:11,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:11,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586768676] [2024-11-28 04:04:11,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586768676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:11,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032376962] [2024-11-28 04:04:11,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:04:11,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:11,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:11,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:11,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:04:12,013 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:04:12,013 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:12,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-28 04:04:12,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:13,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:29,457 WARN L286 SmtUtils]: Spent 12.31s on a formula simplification. DAG size of input: 189 DAG size of output: 185 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:07:42,520 WARN L286 SmtUtils]: Spent 6.51s on a formula simplification that was a NOOP. DAG size: 185 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:08:04,287 WARN L286 SmtUtils]: Spent 9.64s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:08:23,714 WARN L286 SmtUtils]: Spent 10.81s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:08:53,874 WARN L286 SmtUtils]: Spent 9.08s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:09:23,628 WARN L286 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:09:38,688 WARN L286 SmtUtils]: Spent 6.63s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:09:51,605 WARN L286 SmtUtils]: Spent 10.18s on a formula simplification that was a NOOP. DAG size: 108 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:10:01,172 WARN L286 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:10:48,327 WARN L286 SmtUtils]: Spent 11.50s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:11:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:17,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032376962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:17,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:17,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 24] total 59 [2024-11-28 04:11:17,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241179021] [2024-11-28 04:11:17,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:17,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 04:11:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:17,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 04:11:17,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=3011, Unknown=8, NotChecked=0, Total=3422 [2024-11-28 04:11:17,084 INFO L87 Difference]: Start difference. First operand 202 states and 271 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:33,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:33,042 INFO L93 Difference]: Finished difference Result 619 states and 817 transitions. [2024-11-28 04:11:33,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-28 04:11:33,043 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 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 [2024-11-28 04:11:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:33,045 INFO L225 Difference]: With dead ends: 619 [2024-11-28 04:11:33,045 INFO L226 Difference]: Without dead ends: 456 [2024-11-28 04:11:33,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4595 ImplicationChecksByTransitivity, 148.8s TimeCoverageRelationStatistics Valid=1862, Invalid=11470, Unknown=8, NotChecked=0, Total=13340 [2024-11-28 04:11:33,050 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 316 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:33,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 123 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 04:11:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-28 04:11:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 176. [2024-11-28 04:11:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.36) internal successors, (238), 175 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:33,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2024-11-28 04:11:33,063 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 44 [2024-11-28 04:11:33,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:33,063 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2024-11-28 04:11:33,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:11:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2024-11-28 04:11:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:11:33,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:33,064 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:33,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:33,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:11:33,265 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:33,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1797696424, now seen corresponding path program 1 times [2024-11-28 04:11:33,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:33,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47705365] [2024-11-28 04:11:33,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:33,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 48 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:11:36,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47705365] [2024-11-28 04:11:36,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47705365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658309437] [2024-11-28 04:11:36,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:36,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:36,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:36,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:36,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:11:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:36,513 WARN L254 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 154 conjuncts are in the unsatisfiable core [2024-11-28 04:11:36,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 43 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:11:38,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:59,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658309437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:11:59,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:11:59,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 21, 33] total 79 [2024-11-28 04:11:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269586058] [2024-11-28 04:11:59,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:11:59,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-28 04:11:59,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:59,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-28 04:11:59,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=5609, Unknown=0, NotChecked=0, Total=6162 [2024-11-28 04:11:59,392 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 79 states, 79 states have (on average 1.6835443037974684) internal successors, (133), 79 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:04,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:04,877 INFO L93 Difference]: Finished difference Result 667 states and 871 transitions. [2024-11-28 04:12:04,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 04:12:04,878 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.6835443037974684) internal successors, (133), 79 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 04:12:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:04,881 INFO L225 Difference]: With dead ends: 667 [2024-11-28 04:12:04,881 INFO L226 Difference]: Without dead ends: 503 [2024-11-28 04:12:04,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4462 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=1091, Invalid=9829, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 04:12:04,885 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 463 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:04,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 214 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 04:12:04,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-28 04:12:04,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 277. [2024-11-28 04:12:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.3442028985507246) internal successors, (371), 276 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 371 transitions. [2024-11-28 04:12:04,905 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 371 transitions. Word has length 56 [2024-11-28 04:12:04,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:04,906 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 371 transitions. [2024-11-28 04:12:04,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.6835443037974684) internal successors, (133), 79 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:12:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 371 transitions. [2024-11-28 04:12:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:12:04,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:04,908 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:12:04,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:05,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:05,108 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:05,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash 285339595, now seen corresponding path program 1 times [2024-11-28 04:12:05,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:05,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133737461] [2024-11-28 04:12:05,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:12:08,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133737461] [2024-11-28 04:12:08,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133737461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176804096] [2024-11-28 04:12:08,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:08,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:08,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:08,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:08,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:12:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:08,484 WARN L254 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 165 conjuncts are in the unsatisfiable core [2024-11-28 04:12:08,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:12:11,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176804096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:33,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:33,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 35] total 83 [2024-11-28 04:13:33,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741854308] [2024-11-28 04:13:33,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:33,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-28 04:13:33,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:33,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-28 04:13:33,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=6043, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 04:13:33,583 INFO L87 Difference]: Start difference. First operand 277 states and 371 transitions. Second operand has 83 states, 83 states have (on average 1.783132530120482) internal successors, (148), 83 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:00,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:00,773 INFO L93 Difference]: Finished difference Result 889 states and 1149 transitions. [2024-11-28 04:14:00,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-28 04:14:00,775 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.783132530120482) internal successors, (148), 83 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-28 04:14:00,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:00,778 INFO L225 Difference]: With dead ends: 889 [2024-11-28 04:14:00,778 INFO L226 Difference]: Without dead ends: 634 [2024-11-28 04:14:00,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11541 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=3261, Invalid=27189, Unknown=0, NotChecked=0, Total=30450 [2024-11-28 04:14:00,784 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 1154 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:00,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 151 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 04:14:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-28 04:14:00,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 317. [2024-11-28 04:14:00,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.3512658227848102) internal successors, (427), 316 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 427 transitions. [2024-11-28 04:14:00,824 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 427 transitions. Word has length 58 [2024-11-28 04:14:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:00,824 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 427 transitions. [2024-11-28 04:14:00,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.783132530120482) internal successors, (148), 83 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:00,825 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 427 transitions. [2024-11-28 04:14:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:14:00,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:00,826 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:00,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:14:01,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:14:01,027 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:01,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1485206841, now seen corresponding path program 1 times [2024-11-28 04:14:01,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:01,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410746782] [2024-11-28 04:14:01,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:01,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 27 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:04,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410746782] [2024-11-28 04:14:04,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410746782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317741368] [2024-11-28 04:14:04,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:04,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:04,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:04,561 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:04,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b9a03e-bfec-4ff5-99f2-7a671197c6ba/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:14:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:04,805 WARN L254 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 174 conjuncts are in the unsatisfiable core [2024-11-28 04:14:04,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 27 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:06,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:14,797 WARN L286 SmtUtils]: Spent 11.71s on a formula simplification. DAG size of input: 204 DAG size of output: 163 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:16:09,140 WARN L286 SmtUtils]: Spent 18.44s on a formula simplification. DAG size of input: 228 DAG size of output: 211 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:16:55,454 WARN L286 SmtUtils]: Spent 6.82s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:17:16,067 WARN L286 SmtUtils]: Spent 6.73s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:17:43,690 WARN L286 SmtUtils]: Spent 8.72s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:18:14,765 WARN L286 SmtUtils]: Spent 10.78s on a formula simplification that was a NOOP. DAG size: 193 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)