./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:22:09,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:22:09,552 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 19:22:09,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:22:09,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:22:09,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:22:09,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:22:09,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:22:09,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:22:09,592 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:22:09,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:22:09,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:22:09,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:22:09,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:22:09,594 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:22:09,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:22:09,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:22:09,595 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:22:09,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:22:09,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:22:09,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:22:09,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:22:09,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:22:09,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:22:09,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:22:09,602 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:22:09,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:22:09,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:22:09,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:22:09,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:22:09,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:22:09,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:22:09,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:22:09,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:22:09,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:22:09,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:22:09,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:22:09,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:22:09,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:22:09,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:22:09,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:22:09,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:22:09,609 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 [2024-11-08 19:22:09,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:22:09,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:22:09,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:22:09,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:22:09,948 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:22:09,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-08 19:22:11,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:22:12,147 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:22:12,148 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-08 19:22:12,168 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/data/bc151016c/e3d72e5ff78c49e58ae645742beb5e0e/FLAGb571ec46a [2024-11-08 19:22:12,219 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/data/bc151016c/e3d72e5ff78c49e58ae645742beb5e0e [2024-11-08 19:22:12,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:22:12,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:22:12,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:22:12,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:22:12,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:22:12,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8be9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12, skipping insertion in model container [2024-11-08 19:22:12,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:22:12,540 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_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2024-11-08 19:22:12,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:22:12,599 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:22:12,638 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_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2024-11-08 19:22:12,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:22:12,694 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:22:12,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12 WrapperNode [2024-11-08 19:22:12,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:22:12,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:22:12,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:22:12,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:22:12,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,763 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 375 [2024-11-08 19:22:12,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:22:12,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:22:12,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:22:12,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:22:12,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,798 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]. [2024-11-08 19:22:12,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:22:12,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:22:12,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:22:12,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:22:12,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (1/1) ... [2024-11-08 19:22:12,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:22:12,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:22:12,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:22:12,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:22:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:22:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:22:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:22:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:22:13,094 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:22:13,095 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:22:13,520 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-08 19:22:13,520 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:22:13,533 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:22:13,533 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:22:13,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:22:13 BoogieIcfgContainer [2024-11-08 19:22:13,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:22:13,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:22:13,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:22:13,540 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:22:13,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:22:12" (1/3) ... [2024-11-08 19:22:13,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490b8675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:22:13, skipping insertion in model container [2024-11-08 19:22:13,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:22:12" (2/3) ... [2024-11-08 19:22:13,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490b8675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:22:13, skipping insertion in model container [2024-11-08 19:22:13,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:22:13" (3/3) ... [2024-11-08 19:22:13,543 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-08 19:22:13,558 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:22:13,559 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:22:13,627 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:22:13,634 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;@7fc0cdda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:22:13,635 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 19:22:13,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 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) [2024-11-08 19:22:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 19:22:13,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:13,652 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:13,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:13,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:13,661 INFO L85 PathProgramCache]: Analyzing trace with hash -347547403, now seen corresponding path program 1 times [2024-11-08 19:22:13,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:13,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634123548] [2024-11-08 19:22:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:14,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:14,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634123548] [2024-11-08 19:22:14,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634123548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:14,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:14,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:22:14,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76261194] [2024-11-08 19:22:14,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:14,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:22:14,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:22:14,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:14,164 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 78 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) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:14,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:14,259 INFO L93 Difference]: Finished difference Result 177 states and 286 transitions. [2024-11-08 19:22:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:22:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-08 19:22:14,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:14,277 INFO L225 Difference]: With dead ends: 177 [2024-11-08 19:22:14,277 INFO L226 Difference]: Without dead ends: 118 [2024-11-08 19:22:14,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:14,287 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 91 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:14,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 277 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-08 19:22:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2024-11-08 19:22:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4695652173913043) internal successors, (169), 115 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 169 transitions. [2024-11-08 19:22:14,329 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 169 transitions. Word has length 47 [2024-11-08 19:22:14,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:14,329 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 169 transitions. [2024-11-08 19:22:14,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:14,330 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 169 transitions. [2024-11-08 19:22:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 19:22:14,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:14,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:14,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:22:14,332 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:14,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash -391185874, now seen corresponding path program 1 times [2024-11-08 19:22:14,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:14,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272234466] [2024-11-08 19:22:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:14,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:14,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272234466] [2024-11-08 19:22:14,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272234466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:14,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:14,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:22:14,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754818523] [2024-11-08 19:22:14,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:14,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:22:14,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:22:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:14,508 INFO L87 Difference]: Start difference. First operand 116 states and 169 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:14,545 INFO L93 Difference]: Finished difference Result 280 states and 429 transitions. [2024-11-08 19:22:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:22:14,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-08 19:22:14,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:14,552 INFO L225 Difference]: With dead ends: 280 [2024-11-08 19:22:14,552 INFO L226 Difference]: Without dead ends: 190 [2024-11-08 19:22:14,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:14,555 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:14,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:22:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-08 19:22:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-11-08 19:22:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.5133689839572193) internal successors, (283), 187 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:14,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 283 transitions. [2024-11-08 19:22:14,574 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 283 transitions. Word has length 48 [2024-11-08 19:22:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:14,574 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 283 transitions. [2024-11-08 19:22:14,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 283 transitions. [2024-11-08 19:22:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 19:22:14,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:14,577 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:14,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:22:14,577 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:14,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2047730124, now seen corresponding path program 1 times [2024-11-08 19:22:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:14,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209470706] [2024-11-08 19:22:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:14,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:14,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209470706] [2024-11-08 19:22:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209470706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:14,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:22:14,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47699097] [2024-11-08 19:22:14,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:14,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:22:14,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:22:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:14,704 INFO L87 Difference]: Start difference. First operand 188 states and 283 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:14,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:14,738 INFO L93 Difference]: Finished difference Result 480 states and 745 transitions. [2024-11-08 19:22:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:22:14,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-08 19:22:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:14,741 INFO L225 Difference]: With dead ends: 480 [2024-11-08 19:22:14,742 INFO L226 Difference]: Without dead ends: 318 [2024-11-08 19:22:14,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:14,744 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:14,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:22:14,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-08 19:22:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2024-11-08 19:22:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.5333333333333334) internal successors, (483), 315 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 483 transitions. [2024-11-08 19:22:14,771 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 483 transitions. Word has length 49 [2024-11-08 19:22:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:14,771 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 483 transitions. [2024-11-08 19:22:14,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 483 transitions. [2024-11-08 19:22:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 19:22:14,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:14,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:14,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:22:14,774 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:14,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:14,775 INFO L85 PathProgramCache]: Analyzing trace with hash -415311335, now seen corresponding path program 1 times [2024-11-08 19:22:14,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:14,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311558912] [2024-11-08 19:22:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:14,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:14,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311558912] [2024-11-08 19:22:14,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311558912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:14,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:14,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:22:14,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724988654] [2024-11-08 19:22:14,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:14,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:22:14,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:14,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:22:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:14,912 INFO L87 Difference]: Start difference. First operand 316 states and 483 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2024-11-08 19:22:14,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:14,974 INFO L93 Difference]: Finished difference Result 832 states and 1293 transitions. [2024-11-08 19:22:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:22:14,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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 50 [2024-11-08 19:22:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:14,980 INFO L225 Difference]: With dead ends: 832 [2024-11-08 19:22:14,980 INFO L226 Difference]: Without dead ends: 542 [2024-11-08 19:22:14,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:14,983 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:14,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 229 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:22:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-08 19:22:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2024-11-08 19:22:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.5343228200371057) internal successors, (827), 539 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 827 transitions. [2024-11-08 19:22:15,012 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 827 transitions. Word has length 50 [2024-11-08 19:22:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:15,012 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 827 transitions. [2024-11-08 19:22:15,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2024-11-08 19:22:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 827 transitions. [2024-11-08 19:22:15,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 19:22:15,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:15,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:15,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:22:15,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:15,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash -103942672, now seen corresponding path program 1 times [2024-11-08 19:22:15,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:15,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950592934] [2024-11-08 19:22:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:15,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:15,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950592934] [2024-11-08 19:22:15,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950592934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:15,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:15,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:22:15,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979415368] [2024-11-08 19:22:15,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:15,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:22:15,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:15,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:22:15,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:22:15,258 INFO L87 Difference]: Start difference. First operand 540 states and 827 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:15,520 INFO L93 Difference]: Finished difference Result 4652 states and 7235 transitions. [2024-11-08 19:22:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:22:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-08 19:22:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:15,538 INFO L225 Difference]: With dead ends: 4652 [2024-11-08 19:22:15,538 INFO L226 Difference]: Without dead ends: 4138 [2024-11-08 19:22:15,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:22:15,543 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 784 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:15,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 993 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2024-11-08 19:22:15,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 1052. [2024-11-08 19:22:15,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 1.5176022835394862) internal successors, (1595), 1051 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1595 transitions. [2024-11-08 19:22:15,624 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1595 transitions. Word has length 51 [2024-11-08 19:22:15,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:15,626 INFO L471 AbstractCegarLoop]: Abstraction has 1052 states and 1595 transitions. [2024-11-08 19:22:15,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1595 transitions. [2024-11-08 19:22:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 19:22:15,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:15,630 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:15,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:22:15,631 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:15,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2026482100, now seen corresponding path program 1 times [2024-11-08 19:22:15,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:15,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124011466] [2024-11-08 19:22:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:15,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124011466] [2024-11-08 19:22:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124011466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:15,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:15,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:22:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222278111] [2024-11-08 19:22:15,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:15,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:22:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:15,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:22:15,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:15,762 INFO L87 Difference]: Start difference. First operand 1052 states and 1595 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:15,798 INFO L93 Difference]: Finished difference Result 2570 states and 3911 transitions. [2024-11-08 19:22:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:22:15,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-08 19:22:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:15,804 INFO L225 Difference]: With dead ends: 2570 [2024-11-08 19:22:15,805 INFO L226 Difference]: Without dead ends: 1544 [2024-11-08 19:22:15,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:15,808 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 45 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:15,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 201 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:22:15,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-11-08 19:22:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1542. [2024-11-08 19:22:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.5035691109669047) internal successors, (2317), 1541 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2317 transitions. [2024-11-08 19:22:15,851 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2317 transitions. Word has length 53 [2024-11-08 19:22:15,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:15,851 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2317 transitions. [2024-11-08 19:22:15,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2317 transitions. [2024-11-08 19:22:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 19:22:15,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:15,853 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:15,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:22:15,854 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:15,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2005479445, now seen corresponding path program 1 times [2024-11-08 19:22:15,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:15,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141992441] [2024-11-08 19:22:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:16,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:16,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141992441] [2024-11-08 19:22:16,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141992441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:16,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:16,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:22:16,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097747875] [2024-11-08 19:22:16,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:16,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:22:16,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:22:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:22:16,189 INFO L87 Difference]: Start difference. First operand 1542 states and 2317 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:16,327 INFO L93 Difference]: Finished difference Result 3058 states and 4607 transitions. [2024-11-08 19:22:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:22:16,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-08 19:22:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:16,333 INFO L225 Difference]: With dead ends: 3058 [2024-11-08 19:22:16,334 INFO L226 Difference]: Without dead ends: 1544 [2024-11-08 19:22:16,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:22:16,336 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 208 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:16,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 324 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2024-11-08 19:22:16,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1542. [2024-11-08 19:22:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.4879948085658663) internal successors, (2293), 1541 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2293 transitions. [2024-11-08 19:22:16,400 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2293 transitions. Word has length 53 [2024-11-08 19:22:16,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:16,401 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2293 transitions. [2024-11-08 19:22:16,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:16,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2293 transitions. [2024-11-08 19:22:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 19:22:16,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:16,402 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:16,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:22:16,403 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:16,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2042230043, now seen corresponding path program 1 times [2024-11-08 19:22:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:16,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248639539] [2024-11-08 19:22:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:16,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:16,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:16,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248639539] [2024-11-08 19:22:16,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248639539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:16,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:16,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:22:16,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795630769] [2024-11-08 19:22:16,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:16,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:22:16,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:16,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:22:16,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:22:16,524 INFO L87 Difference]: Start difference. First operand 1542 states and 2293 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:16,692 INFO L93 Difference]: Finished difference Result 4082 states and 6111 transitions. [2024-11-08 19:22:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:22:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 19:22:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:16,701 INFO L225 Difference]: With dead ends: 4082 [2024-11-08 19:22:16,701 INFO L226 Difference]: Without dead ends: 2568 [2024-11-08 19:22:16,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:22:16,706 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 432 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:16,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 109 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:16,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2024-11-08 19:22:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2566. [2024-11-08 19:22:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.4865497076023393) internal successors, (3813), 2565 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3813 transitions. [2024-11-08 19:22:16,772 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3813 transitions. Word has length 54 [2024-11-08 19:22:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:16,772 INFO L471 AbstractCegarLoop]: Abstraction has 2566 states and 3813 transitions. [2024-11-08 19:22:16,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3813 transitions. [2024-11-08 19:22:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 19:22:16,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:16,774 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:16,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 19:22:16,774 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:16,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:16,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1489873546, now seen corresponding path program 1 times [2024-11-08 19:22:16,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:16,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737831254] [2024-11-08 19:22:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:16,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:16,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737831254] [2024-11-08 19:22:16,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737831254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:16,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:16,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:22:16,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405546424] [2024-11-08 19:22:16,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:16,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:22:16,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:16,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:22:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:22:16,914 INFO L87 Difference]: Start difference. First operand 2566 states and 3813 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:17,024 INFO L93 Difference]: Finished difference Result 5104 states and 7598 transitions. [2024-11-08 19:22:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:22:17,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 19:22:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:17,035 INFO L225 Difference]: With dead ends: 5104 [2024-11-08 19:22:17,036 INFO L226 Difference]: Without dead ends: 2566 [2024-11-08 19:22:17,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:22:17,039 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 262 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:17,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 75 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:17,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2024-11-08 19:22:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2566. [2024-11-08 19:22:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.470955165692008) internal successors, (3773), 2565 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:17,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3773 transitions. [2024-11-08 19:22:17,135 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3773 transitions. Word has length 54 [2024-11-08 19:22:17,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:17,136 INFO L471 AbstractCegarLoop]: Abstraction has 2566 states and 3773 transitions. [2024-11-08 19:22:17,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3773 transitions. [2024-11-08 19:22:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 19:22:17,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:17,137 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:17,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 19:22:17,137 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:17,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1617958853, now seen corresponding path program 1 times [2024-11-08 19:22:17,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:17,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641388925] [2024-11-08 19:22:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:17,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:17,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641388925] [2024-11-08 19:22:17,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641388925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:17,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:17,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:22:17,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134242638] [2024-11-08 19:22:17,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:17,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:22:17,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:17,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:22:17,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:22:17,247 INFO L87 Difference]: Start difference. First operand 2566 states and 3773 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:17,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:17,351 INFO L93 Difference]: Finished difference Result 5104 states and 7518 transitions. [2024-11-08 19:22:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:22:17,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 19:22:17,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:17,359 INFO L225 Difference]: With dead ends: 5104 [2024-11-08 19:22:17,359 INFO L226 Difference]: Without dead ends: 2566 [2024-11-08 19:22:17,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:22:17,363 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 246 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:17,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 83 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2024-11-08 19:22:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2566. [2024-11-08 19:22:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 1.4553606237816765) internal successors, (3733), 2565 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3733 transitions. [2024-11-08 19:22:17,417 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3733 transitions. Word has length 54 [2024-11-08 19:22:17,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:17,417 INFO L471 AbstractCegarLoop]: Abstraction has 2566 states and 3733 transitions. [2024-11-08 19:22:17,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:17,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3733 transitions. [2024-11-08 19:22:17,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 19:22:17,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:17,418 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:17,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 19:22:17,419 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:17,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1811476054, now seen corresponding path program 1 times [2024-11-08 19:22:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:17,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126814248] [2024-11-08 19:22:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:17,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:17,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126814248] [2024-11-08 19:22:17,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126814248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:17,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:17,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:22:17,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658722190] [2024-11-08 19:22:17,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:17,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:22:17,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:17,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:22:17,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:22:17,739 INFO L87 Difference]: Start difference. First operand 2566 states and 3733 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:17,777 INFO L93 Difference]: Finished difference Result 2696 states and 3926 transitions. [2024-11-08 19:22:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:22:17,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 19:22:17,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:17,786 INFO L225 Difference]: With dead ends: 2696 [2024-11-08 19:22:17,786 INFO L226 Difference]: Without dead ends: 2694 [2024-11-08 19:22:17,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:22:17,788 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:17,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 388 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:22:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2024-11-08 19:22:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2694. [2024-11-08 19:22:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2693 states have (on average 1.4307463795024136) internal successors, (3853), 2693 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3853 transitions. [2024-11-08 19:22:17,840 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3853 transitions. Word has length 54 [2024-11-08 19:22:17,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:17,840 INFO L471 AbstractCegarLoop]: Abstraction has 2694 states and 3853 transitions. [2024-11-08 19:22:17,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3853 transitions. [2024-11-08 19:22:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 19:22:17,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:17,843 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:17,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 19:22:17,843 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:17,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:17,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1690284398, now seen corresponding path program 1 times [2024-11-08 19:22:17,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:17,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236439894] [2024-11-08 19:22:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:17,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:22:18,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:18,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236439894] [2024-11-08 19:22:18,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236439894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:18,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:18,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:22:18,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565019682] [2024-11-08 19:22:18,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:18,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:22:18,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:18,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:22:18,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:22:18,029 INFO L87 Difference]: Start difference. First operand 2694 states and 3853 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:18,205 INFO L93 Difference]: Finished difference Result 13720 states and 19666 transitions. [2024-11-08 19:22:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:22:18,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 76 [2024-11-08 19:22:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:18,259 INFO L225 Difference]: With dead ends: 13720 [2024-11-08 19:22:18,263 INFO L226 Difference]: Without dead ends: 11542 [2024-11-08 19:22:18,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:22:18,271 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 478 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:18,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 524 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:18,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11542 states. [2024-11-08 19:22:18,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11542 to 5118. [2024-11-08 19:22:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 5117 states have (on average 1.426812585499316) internal successors, (7301), 5117 states have internal predecessors, (7301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 7301 transitions. [2024-11-08 19:22:18,479 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 7301 transitions. Word has length 76 [2024-11-08 19:22:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:18,479 INFO L471 AbstractCegarLoop]: Abstraction has 5118 states and 7301 transitions. [2024-11-08 19:22:18,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 7301 transitions. [2024-11-08 19:22:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 19:22:18,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:18,482 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:18,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 19:22:18,482 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:18,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash -34257664, now seen corresponding path program 1 times [2024-11-08 19:22:18,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:18,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866661036] [2024-11-08 19:22:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:18,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 19:22:18,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:18,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866661036] [2024-11-08 19:22:18,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866661036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:18,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:18,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:22:18,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050429746] [2024-11-08 19:22:18,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:18,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:22:18,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:18,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:22:18,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:22:18,662 INFO L87 Difference]: Start difference. First operand 5118 states and 7301 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:18,814 INFO L93 Difference]: Finished difference Result 16384 states and 23458 transitions. [2024-11-08 19:22:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:22:18,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 76 [2024-11-08 19:22:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:18,844 INFO L225 Difference]: With dead ends: 16384 [2024-11-08 19:22:18,844 INFO L226 Difference]: Without dead ends: 13718 [2024-11-08 19:22:18,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:22:18,852 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 492 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:18,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 588 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13718 states. [2024-11-08 19:22:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13718 to 8870. [2024-11-08 19:22:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8870 states, 8869 states have (on average 1.4221445484271056) internal successors, (12613), 8869 states have internal predecessors, (12613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 12613 transitions. [2024-11-08 19:22:19,063 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 12613 transitions. Word has length 76 [2024-11-08 19:22:19,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:19,064 INFO L471 AbstractCegarLoop]: Abstraction has 8870 states and 12613 transitions. [2024-11-08 19:22:19,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 12613 transitions. [2024-11-08 19:22:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 19:22:19,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:19,066 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:19,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 19:22:19,067 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:19,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1119688442, now seen corresponding path program 1 times [2024-11-08 19:22:19,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:19,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071796546] [2024-11-08 19:22:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:19,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 19:22:19,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:19,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071796546] [2024-11-08 19:22:19,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071796546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:19,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:19,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:22:19,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816013061] [2024-11-08 19:22:19,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:19,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:22:19,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:19,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:22:19,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:22:19,263 INFO L87 Difference]: Start difference. First operand 8870 states and 12613 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:19,426 INFO L93 Difference]: Finished difference Result 19048 states and 27242 transitions. [2024-11-08 19:22:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:22:19,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 76 [2024-11-08 19:22:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:19,497 INFO L225 Difference]: With dead ends: 19048 [2024-11-08 19:22:19,497 INFO L226 Difference]: Without dead ends: 16382 [2024-11-08 19:22:19,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:22:19,502 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 442 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:19,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 631 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16382 states. [2024-11-08 19:22:19,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16382 to 11534. [2024-11-08 19:22:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11534 states, 11533 states have (on average 1.4217462932454694) internal successors, (16397), 11533 states have internal predecessors, (16397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11534 states to 11534 states and 16397 transitions. [2024-11-08 19:22:19,696 INFO L78 Accepts]: Start accepts. Automaton has 11534 states and 16397 transitions. Word has length 76 [2024-11-08 19:22:19,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:19,696 INFO L471 AbstractCegarLoop]: Abstraction has 11534 states and 16397 transitions. [2024-11-08 19:22:19,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 11534 states and 16397 transitions. [2024-11-08 19:22:19,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 19:22:19,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:19,699 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:19,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 19:22:19,699 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:19,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 261787764, now seen corresponding path program 1 times [2024-11-08 19:22:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209252343] [2024-11-08 19:22:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:19,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 19:22:19,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:19,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209252343] [2024-11-08 19:22:19,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209252343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:19,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:19,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:22:19,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802958420] [2024-11-08 19:22:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:19,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:22:19,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:22:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:22:19,921 INFO L87 Difference]: Start difference. First operand 11534 states and 16397 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 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) [2024-11-08 19:22:20,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:20,081 INFO L93 Difference]: Finished difference Result 21712 states and 31026 transitions. [2024-11-08 19:22:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:22:20,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 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) Word has length 76 [2024-11-08 19:22:20,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:20,114 INFO L225 Difference]: With dead ends: 21712 [2024-11-08 19:22:20,115 INFO L226 Difference]: Without dead ends: 19046 [2024-11-08 19:22:20,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:22:20,123 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 480 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:20,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 615 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:22:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19046 states. [2024-11-08 19:22:20,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19046 to 14198. [2024-11-08 19:22:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14198 states, 14197 states have (on average 1.4214974994717193) internal successors, (20181), 14197 states have internal predecessors, (20181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14198 states to 14198 states and 20181 transitions. [2024-11-08 19:22:20,450 INFO L78 Accepts]: Start accepts. Automaton has 14198 states and 20181 transitions. Word has length 76 [2024-11-08 19:22:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:20,451 INFO L471 AbstractCegarLoop]: Abstraction has 14198 states and 20181 transitions. [2024-11-08 19:22:20,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 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) [2024-11-08 19:22:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 14198 states and 20181 transitions. [2024-11-08 19:22:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 19:22:20,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:20,455 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:20,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 19:22:20,455 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:20,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1414120063, now seen corresponding path program 1 times [2024-11-08 19:22:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:20,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789892883] [2024-11-08 19:22:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:20,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:22:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:20,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789892883] [2024-11-08 19:22:20,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789892883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:22:20,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074543817] [2024-11-08 19:22:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:20,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:20,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:22:20,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:22:20,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:22:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:20,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 19:22:20,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:22:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:21,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:22:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:22,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074543817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:22:22,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:22:22,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-11-08 19:22:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636930094] [2024-11-08 19:22:22,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:22:22,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 19:22:22,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:22,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 19:22:22,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-08 19:22:22,592 INFO L87 Difference]: Start difference. First operand 14198 states and 20181 transitions. Second operand has 20 states, 20 states have (on average 10.6) internal successors, (212), 20 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:25,511 INFO L93 Difference]: Finished difference Result 89148 states and 126670 transitions. [2024-11-08 19:22:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-08 19:22:25,512 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.6) internal successors, (212), 20 states have internal predecessors, (212), 0 states have call successors, (0), 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 77 [2024-11-08 19:22:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:25,667 INFO L225 Difference]: With dead ends: 89148 [2024-11-08 19:22:25,667 INFO L226 Difference]: Without dead ends: 74978 [2024-11-08 19:22:25,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1035, Invalid=3935, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 19:22:25,693 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 2549 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:25,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2549 Valid, 1048 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 19:22:25,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74978 states. [2024-11-08 19:22:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74978 to 56760. [2024-11-08 19:22:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56760 states, 56759 states have (on average 1.3923959195898448) internal successors, (79031), 56759 states have internal predecessors, (79031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56760 states to 56760 states and 79031 transitions. [2024-11-08 19:22:27,143 INFO L78 Accepts]: Start accepts. Automaton has 56760 states and 79031 transitions. Word has length 77 [2024-11-08 19:22:27,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:27,144 INFO L471 AbstractCegarLoop]: Abstraction has 56760 states and 79031 transitions. [2024-11-08 19:22:27,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.6) internal successors, (212), 20 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:27,144 INFO L276 IsEmpty]: Start isEmpty. Operand 56760 states and 79031 transitions. [2024-11-08 19:22:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 19:22:27,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:27,150 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:27,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 19:22:27,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 19:22:27,354 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:27,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:27,355 INFO L85 PathProgramCache]: Analyzing trace with hash -968717224, now seen corresponding path program 1 times [2024-11-08 19:22:27,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:27,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808670622] [2024-11-08 19:22:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:27,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:27,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808670622] [2024-11-08 19:22:27,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808670622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:22:27,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748906328] [2024-11-08 19:22:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:27,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:27,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:22:27,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:22:27,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:22:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:28,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 19:22:28,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:22:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:28,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:22:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748906328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:22:29,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:22:29,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-08 19:22:29,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88217738] [2024-11-08 19:22:29,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:22:29,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 19:22:29,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 19:22:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-08 19:22:29,323 INFO L87 Difference]: Start difference. First operand 56760 states and 79031 transitions. Second operand has 21 states, 21 states have (on average 8.047619047619047) internal successors, (169), 20 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:31,132 INFO L93 Difference]: Finished difference Result 213026 states and 296751 transitions. [2024-11-08 19:22:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 19:22:31,133 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.047619047619047) internal successors, (169), 20 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 19:22:31,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:31,393 INFO L225 Difference]: With dead ends: 213026 [2024-11-08 19:22:31,393 INFO L226 Difference]: Without dead ends: 156294 [2024-11-08 19:22:31,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1294, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 19:22:31,470 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 1720 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:31,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 761 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 19:22:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156294 states. [2024-11-08 19:22:32,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156294 to 97742. [2024-11-08 19:22:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97742 states, 97741 states have (on average 1.381027409173223) internal successors, (134983), 97741 states have internal predecessors, (134983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97742 states to 97742 states and 134983 transitions. [2024-11-08 19:22:33,502 INFO L78 Accepts]: Start accepts. Automaton has 97742 states and 134983 transitions. Word has length 78 [2024-11-08 19:22:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:33,503 INFO L471 AbstractCegarLoop]: Abstraction has 97742 states and 134983 transitions. [2024-11-08 19:22:33,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.047619047619047) internal successors, (169), 20 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 97742 states and 134983 transitions. [2024-11-08 19:22:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 19:22:33,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:33,515 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:33,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:22:33,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 19:22:33,716 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:33,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash 635552222, now seen corresponding path program 1 times [2024-11-08 19:22:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:33,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805993194] [2024-11-08 19:22:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:34,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:34,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805993194] [2024-11-08 19:22:34,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805993194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:22:34,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779512216] [2024-11-08 19:22:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:34,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:34,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:22:34,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:22:34,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:22:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:34,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 19:22:34,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:22:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:35,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:22:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779512216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:22:35,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:22:35,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-08 19:22:35,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138157223] [2024-11-08 19:22:35,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:22:35,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 19:22:35,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:35,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 19:22:35,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-08 19:22:35,947 INFO L87 Difference]: Start difference. First operand 97742 states and 134983 transitions. Second operand has 21 states, 21 states have (on average 8.476190476190476) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:38,517 INFO L93 Difference]: Finished difference Result 440122 states and 605025 transitions. [2024-11-08 19:22:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 19:22:38,518 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.476190476190476) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 19:22:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:38,998 INFO L225 Difference]: With dead ends: 440122 [2024-11-08 19:22:38,998 INFO L226 Difference]: Without dead ends: 342408 [2024-11-08 19:22:39,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 19:22:39,108 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 860 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:39,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 843 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 19:22:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342408 states. [2024-11-08 19:22:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342408 to 204730. [2024-11-08 19:22:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204730 states, 204729 states have (on average 1.3701722765216457) internal successors, (280514), 204729 states have internal predecessors, (280514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204730 states to 204730 states and 280514 transitions. [2024-11-08 19:22:43,381 INFO L78 Accepts]: Start accepts. Automaton has 204730 states and 280514 transitions. Word has length 78 [2024-11-08 19:22:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:43,382 INFO L471 AbstractCegarLoop]: Abstraction has 204730 states and 280514 transitions. [2024-11-08 19:22:43,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.476190476190476) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 204730 states and 280514 transitions. [2024-11-08 19:22:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 19:22:43,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:43,387 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:43,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 19:22:43,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 19:22:43,588 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:43,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1417022205, now seen corresponding path program 1 times [2024-11-08 19:22:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:43,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072555517] [2024-11-08 19:22:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:43,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:43,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072555517] [2024-11-08 19:22:43,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072555517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:22:43,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:22:43,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:22:43,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584910277] [2024-11-08 19:22:43,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:22:43,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:22:43,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:22:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:43,700 INFO L87 Difference]: Start difference. First operand 204730 states and 280514 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:22:45,193 INFO L93 Difference]: Finished difference Result 402914 states and 552525 transitions. [2024-11-08 19:22:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:22:45,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-11-08 19:22:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:22:45,422 INFO L225 Difference]: With dead ends: 402914 [2024-11-08 19:22:45,422 INFO L226 Difference]: Without dead ends: 198212 [2024-11-08 19:22:45,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:22:45,503 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 46 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:22:45,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 225 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:22:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198212 states. [2024-11-08 19:22:48,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198212 to 194490. [2024-11-08 19:22:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194490 states, 194489 states have (on average 1.3501946125487816) internal successors, (262598), 194489 states have internal predecessors, (262598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194490 states to 194490 states and 262598 transitions. [2024-11-08 19:22:49,171 INFO L78 Accepts]: Start accepts. Automaton has 194490 states and 262598 transitions. Word has length 79 [2024-11-08 19:22:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:22:49,171 INFO L471 AbstractCegarLoop]: Abstraction has 194490 states and 262598 transitions. [2024-11-08 19:22:49,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:22:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 194490 states and 262598 transitions. [2024-11-08 19:22:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 19:22:49,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:22:49,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:22:49,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 19:22:49,184 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:22:49,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:22:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1571427843, now seen corresponding path program 1 times [2024-11-08 19:22:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:22:49,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721923870] [2024-11-08 19:22:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:22:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:49,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:22:49,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721923870] [2024-11-08 19:22:49,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721923870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:22:49,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709255772] [2024-11-08 19:22:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:22:49,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:22:49,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:22:49,539 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:22:49,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc563232-8094-4e08-8bb4-cfe5ff8a07ee/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:22:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:22:49,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 19:22:49,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:22:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:57,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:22:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:22:59,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709255772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:22:59,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:22:59,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 17] total 43 [2024-11-08 19:22:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902475579] [2024-11-08 19:22:59,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:22:59,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 19:22:59,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:22:59,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 19:22:59,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 19:22:59,679 INFO L87 Difference]: Start difference. First operand 194490 states and 262598 transitions. Second operand has 43 states, 43 states have (on average 5.116279069767442) internal successors, (220), 43 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:26:05,511 INFO L93 Difference]: Finished difference Result 1925725 states and 2589208 transitions. [2024-11-08 19:26:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 950 states. [2024-11-08 19:26:05,512 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.116279069767442) internal successors, (220), 43 states have internal predecessors, (220), 0 states have call successors, (0), 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 79 [2024-11-08 19:26:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:26:09,026 INFO L225 Difference]: With dead ends: 1925725 [2024-11-08 19:26:09,026 INFO L226 Difference]: Without dead ends: 1731263 [2024-11-08 19:26:09,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 989 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475411 ImplicationChecksByTransitivity, 167.7s TimeCoverageRelationStatistics Valid=71271, Invalid=909819, Unknown=0, NotChecked=0, Total=981090 [2024-11-08 19:26:09,546 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 39690 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 7269 mSolverCounterSat, 671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39690 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 7940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 671 IncrementalHoareTripleChecker+Valid, 7269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-11-08 19:26:09,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39690 Valid, 3064 Invalid, 7940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [671 Valid, 7269 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2024-11-08 19:26:10,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731263 states.