./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65159196aa732cf84d788dcb31500c216d665703806e14a7c6f7047ab62d591b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:10:03,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:10:03,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:10:03,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:10:03,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:10:03,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:10:03,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:10:03,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:10:03,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:10:03,847 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:10:03,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:10:03,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:10:03,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:10:03,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:10:03,849 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:10:03,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:10:03,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:10:03,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:10:03,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:10:03,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:10:03,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:10:03,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:10:03,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:10:03,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:10:03,851 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:10:03,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:10:03,851 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:10:03,851 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:10:03,851 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:10:03,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:10:03,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:10:03,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:10:03,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:10:03,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:10:03,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:10:03,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:10:03,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:10:03,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:10:03,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:10:03,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:10:03,853 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:10:03,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:10:03,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:10:03,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:10:03,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:10:03,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:10:03,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:10:03,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:10:03,855 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65159196aa732cf84d788dcb31500c216d665703806e14a7c6f7047ab62d591b [2024-11-27 20:10:04,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:10:04,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:10:04,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:10:04,203 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:10:04,203 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:10:04,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c [2024-11-27 20:10:07,229 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/data/eb6ec0623/cac9f714eb6f48f6bd1dec02c50430e1/FLAGf223e1cd1 [2024-11-27 20:10:07,663 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:10:07,666 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c [2024-11-27 20:10:07,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/data/eb6ec0623/cac9f714eb6f48f6bd1dec02c50430e1/FLAGf223e1cd1 [2024-11-27 20:10:07,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/data/eb6ec0623/cac9f714eb6f48f6bd1dec02c50430e1 [2024-11-27 20:10:07,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:10:07,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:10:07,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:10:07,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:10:07,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:10:07,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:10:07" (1/1) ... [2024-11-27 20:10:07,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3336f1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:07, skipping insertion in model container [2024-11-27 20:10:07,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:10:07" (1/1) ... [2024-11-27 20:10:07,759 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:10:08,013 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_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c[15075,15088] [2024-11-27 20:10:08,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:10:08,029 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:10:08,119 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_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.BOUNDED-12.pals.c[15075,15088] [2024-11-27 20:10:08,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:10:08,144 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:10:08,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08 WrapperNode [2024-11-27 20:10:08,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:10:08,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:10:08,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:10:08,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:10:08,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,199 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 397 [2024-11-27 20:10:08,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:10:08,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:10:08,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:10:08,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:10:08,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,254 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]. [2024-11-27 20:10:08,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,270 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:10:08,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:10:08,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:10:08,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:10:08,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (1/1) ... [2024-11-27 20:10:08,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:10:08,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:08,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:10:08,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:10:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:10:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:10:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:10:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:10:08,493 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:10:08,495 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:10:09,151 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-27 20:10:09,152 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:10:09,164 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:10:09,166 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:10:09,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:10:09 BoogieIcfgContainer [2024-11-27 20:10:09,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:10:09,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:10:09,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:10:09,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:10:09,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:10:07" (1/3) ... [2024-11-27 20:10:09,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4f1128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:10:09, skipping insertion in model container [2024-11-27 20:10:09,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:08" (2/3) ... [2024-11-27 20:10:09,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4f1128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:10:09, skipping insertion in model container [2024-11-27 20:10:09,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:10:09" (3/3) ... [2024-11-27 20:10:09,180 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c [2024-11-27 20:10:09,197 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:10:09,202 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c that has 1 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:10:09,298 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:10:09,313 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;@5e32b01c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:10:09,315 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:10:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 98 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:09,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-27 20:10:09,329 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:09,329 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:09,330 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:09,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1377296616, now seen corresponding path program 1 times [2024-11-27 20:10:09,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:09,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432884251] [2024-11-27 20:10:09,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:09,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:09,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432884251] [2024-11-27 20:10:09,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432884251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:09,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:09,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:10:09,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547317709] [2024-11-27 20:10:09,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:09,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:10:09,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:09,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:10:09,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:10:09,642 INFO L87 Difference]: Start difference. First operand has 99 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 98 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:09,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:09,660 INFO L93 Difference]: Finished difference Result 153 states and 256 transitions. [2024-11-27 20:10:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:10:09,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-27 20:10:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:09,669 INFO L225 Difference]: With dead ends: 153 [2024-11-27 20:10:09,669 INFO L226 Difference]: Without dead ends: 95 [2024-11-27 20:10:09,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:10:09,675 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:09,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:09,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-27 20:10:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-27 20:10:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.7446808510638299) internal successors, (164), 94 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 164 transitions. [2024-11-27 20:10:09,719 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 164 transitions. Word has length 26 [2024-11-27 20:10:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:09,721 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 164 transitions. [2024-11-27 20:10:09,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 164 transitions. [2024-11-27 20:10:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-27 20:10:09,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:09,724 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:09,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:10:09,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:09,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash -954594790, now seen corresponding path program 1 times [2024-11-27 20:10:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:09,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614980708] [2024-11-27 20:10:09,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:09,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:10,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614980708] [2024-11-27 20:10:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614980708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:10,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:10,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:10:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718262159] [2024-11-27 20:10:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:10,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:10:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:10,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:10:10,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:10:10,163 INFO L87 Difference]: Start difference. First operand 95 states and 164 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:10,283 INFO L93 Difference]: Finished difference Result 148 states and 246 transitions. [2024-11-27 20:10:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:10:10,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-27 20:10:10,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:10,289 INFO L225 Difference]: With dead ends: 148 [2024-11-27 20:10:10,289 INFO L226 Difference]: Without dead ends: 95 [2024-11-27 20:10:10,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:10:10,290 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:10,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 603 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:10:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-27 20:10:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-27 20:10:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 94 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2024-11-27 20:10:10,304 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 26 [2024-11-27 20:10:10,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:10,304 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2024-11-27 20:10:10,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2024-11-27 20:10:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:10:10,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:10,306 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:10,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:10:10,306 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:10,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:10,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1966565623, now seen corresponding path program 1 times [2024-11-27 20:10:10,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:10,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851694649] [2024-11-27 20:10:10,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:10,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:10,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:10,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851694649] [2024-11-27 20:10:10,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851694649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:10,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:10,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:10:10,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071665484] [2024-11-27 20:10:10,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:10,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:10:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:10,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:10:10,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:10:10,883 INFO L87 Difference]: Start difference. First operand 95 states and 124 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:11,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:11,587 INFO L93 Difference]: Finished difference Result 683 states and 1060 transitions. [2024-11-27 20:10:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:10:11,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-27 20:10:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:11,601 INFO L225 Difference]: With dead ends: 683 [2024-11-27 20:10:11,601 INFO L226 Difference]: Without dead ends: 634 [2024-11-27 20:10:11,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:10:11,607 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 1076 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:11,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 2285 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:10:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-27 20:10:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 142. [2024-11-27 20:10:11,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.4113475177304964) internal successors, (199), 141 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:11,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 199 transitions. [2024-11-27 20:10:11,661 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 199 transitions. Word has length 65 [2024-11-27 20:10:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:11,662 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 199 transitions. [2024-11-27 20:10:11,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 199 transitions. [2024-11-27 20:10:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 20:10:11,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:11,664 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:11,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:10:11,665 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:11,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1499647751, now seen corresponding path program 1 times [2024-11-27 20:10:11,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:11,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822157911] [2024-11-27 20:10:11,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:11,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:11,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:11,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822157911] [2024-11-27 20:10:11,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822157911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:11,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:11,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:11,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141834451] [2024-11-27 20:10:11,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:11,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:11,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:11,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:11,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:11,922 INFO L87 Difference]: Start difference. First operand 142 states and 199 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:11,967 INFO L93 Difference]: Finished difference Result 323 states and 486 transitions. [2024-11-27 20:10:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:11,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-27 20:10:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:11,970 INFO L225 Difference]: With dead ends: 323 [2024-11-27 20:10:11,970 INFO L226 Difference]: Without dead ends: 227 [2024-11-27 20:10:11,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:11,974 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 51 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 195 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 [2024-11-27 20:10:11,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 195 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:11,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-27 20:10:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2024-11-27 20:10:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.46875) internal successors, (329), 224 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 329 transitions. [2024-11-27 20:10:11,997 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 329 transitions. Word has length 67 [2024-11-27 20:10:11,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:11,998 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 329 transitions. [2024-11-27 20:10:11,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 329 transitions. [2024-11-27 20:10:12,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 20:10:12,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:12,002 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:12,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:10:12,002 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:12,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:12,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1433154239, now seen corresponding path program 1 times [2024-11-27 20:10:12,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:12,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545359844] [2024-11-27 20:10:12,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:12,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:12,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545359844] [2024-11-27 20:10:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545359844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:12,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:12,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:10:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678613346] [2024-11-27 20:10:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:12,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:10:12,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:12,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:10:12,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:10:12,663 INFO L87 Difference]: Start difference. First operand 225 states and 329 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:13,055 INFO L93 Difference]: Finished difference Result 406 states and 613 transitions. [2024-11-27 20:10:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:10:13,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-27 20:10:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:13,057 INFO L225 Difference]: With dead ends: 406 [2024-11-27 20:10:13,057 INFO L226 Difference]: Without dead ends: 227 [2024-11-27 20:10:13,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:10:13,059 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 93 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:13,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 569 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:10:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-27 20:10:13,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2024-11-27 20:10:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4598214285714286) internal successors, (327), 224 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 327 transitions. [2024-11-27 20:10:13,085 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 327 transitions. Word has length 67 [2024-11-27 20:10:13,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:13,085 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 327 transitions. [2024-11-27 20:10:13,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 327 transitions. [2024-11-27 20:10:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 20:10:13,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:13,091 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:13,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:10:13,092 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:13,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1892831450, now seen corresponding path program 1 times [2024-11-27 20:10:13,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:13,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710847572] [2024-11-27 20:10:13,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:13,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:13,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:13,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710847572] [2024-11-27 20:10:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710847572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:13,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:13,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:10:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543798110] [2024-11-27 20:10:13,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:13,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:10:13,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:13,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:10:13,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:10:13,469 INFO L87 Difference]: Start difference. First operand 225 states and 327 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:13,508 INFO L93 Difference]: Finished difference Result 233 states and 336 transitions. [2024-11-27 20:10:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:10:13,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-27 20:10:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:13,510 INFO L225 Difference]: With dead ends: 233 [2024-11-27 20:10:13,512 INFO L226 Difference]: Without dead ends: 231 [2024-11-27 20:10:13,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:10:13,514 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:13,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 475 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:13,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-27 20:10:13,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-27 20:10:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4434782608695653) internal successors, (332), 230 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 332 transitions. [2024-11-27 20:10:13,532 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 332 transitions. Word has length 68 [2024-11-27 20:10:13,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:13,533 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 332 transitions. [2024-11-27 20:10:13,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,534 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 332 transitions. [2024-11-27 20:10:13,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:10:13,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:13,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:13,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:10:13,537 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:13,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1662299329, now seen corresponding path program 1 times [2024-11-27 20:10:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:13,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295131027] [2024-11-27 20:10:13,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:13,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:13,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295131027] [2024-11-27 20:10:13,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295131027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:13,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:13,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792726749] [2024-11-27 20:10:13,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:13,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:13,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:13,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:13,635 INFO L87 Difference]: Start difference. First operand 231 states and 332 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:13,667 INFO L93 Difference]: Finished difference Result 430 states and 638 transitions. [2024-11-27 20:10:13,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:13,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-27 20:10:13,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:13,670 INFO L225 Difference]: With dead ends: 430 [2024-11-27 20:10:13,672 INFO L226 Difference]: Without dead ends: 328 [2024-11-27 20:10:13,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:13,673 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 67 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:13,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 265 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-27 20:10:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2024-11-27 20:10:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.4646153846153847) internal successors, (476), 325 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 476 transitions. [2024-11-27 20:10:13,695 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 476 transitions. Word has length 69 [2024-11-27 20:10:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:13,696 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 476 transitions. [2024-11-27 20:10:13,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 476 transitions. [2024-11-27 20:10:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:10:13,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:13,698 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:13,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:10:13,698 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:13,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1825213889, now seen corresponding path program 1 times [2024-11-27 20:10:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940650128] [2024-11-27 20:10:13,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:13,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940650128] [2024-11-27 20:10:13,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940650128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:13,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:13,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:13,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887301122] [2024-11-27 20:10:13,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:13,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:13,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:13,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:13,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:13,795 INFO L87 Difference]: Start difference. First operand 326 states and 476 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:13,835 INFO L93 Difference]: Finished difference Result 856 states and 1288 transitions. [2024-11-27 20:10:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:13,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-27 20:10:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:13,838 INFO L225 Difference]: With dead ends: 856 [2024-11-27 20:10:13,839 INFO L226 Difference]: Without dead ends: 579 [2024-11-27 20:10:13,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:13,843 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 65 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:13,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 271 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-27 20:10:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 577. [2024-11-27 20:10:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.4826388888888888) internal successors, (854), 576 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 854 transitions. [2024-11-27 20:10:13,872 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 854 transitions. Word has length 69 [2024-11-27 20:10:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:13,873 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 854 transitions. [2024-11-27 20:10:13,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 854 transitions. [2024-11-27 20:10:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:10:13,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:13,874 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:13,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:10:13,874 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:13,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash -967635007, now seen corresponding path program 1 times [2024-11-27 20:10:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:13,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314403719] [2024-11-27 20:10:13,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:13,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:13,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:13,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314403719] [2024-11-27 20:10:13,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314403719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:13,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:13,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:13,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748438672] [2024-11-27 20:10:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:13,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:13,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:13,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:13,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:13,963 INFO L87 Difference]: Start difference. First operand 577 states and 854 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:14,020 INFO L93 Difference]: Finished difference Result 1585 states and 2380 transitions. [2024-11-27 20:10:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:14,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-27 20:10:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:14,026 INFO L225 Difference]: With dead ends: 1585 [2024-11-27 20:10:14,026 INFO L226 Difference]: Without dead ends: 1057 [2024-11-27 20:10:14,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:14,029 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 61 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:14,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 267 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:14,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2024-11-27 20:10:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1055. [2024-11-27 20:10:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 1.4819734345351043) internal successors, (1562), 1054 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:14,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1562 transitions. [2024-11-27 20:10:14,096 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1562 transitions. Word has length 69 [2024-11-27 20:10:14,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:14,096 INFO L471 AbstractCegarLoop]: Abstraction has 1055 states and 1562 transitions. [2024-11-27 20:10:14,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1562 transitions. [2024-11-27 20:10:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:10:14,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:14,097 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:14,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:10:14,098 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:14,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1111863489, now seen corresponding path program 1 times [2024-11-27 20:10:14,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:14,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535852936] [2024-11-27 20:10:14,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:14,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:14,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535852936] [2024-11-27 20:10:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535852936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:14,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:14,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:14,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369978807] [2024-11-27 20:10:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:14,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:14,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:14,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:14,180 INFO L87 Difference]: Start difference. First operand 1055 states and 1562 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:14,247 INFO L93 Difference]: Finished difference Result 2971 states and 4420 transitions. [2024-11-27 20:10:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:14,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-27 20:10:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:14,256 INFO L225 Difference]: With dead ends: 2971 [2024-11-27 20:10:14,256 INFO L226 Difference]: Without dead ends: 1965 [2024-11-27 20:10:14,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:14,261 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 59 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:14,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 269 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2024-11-27 20:10:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1963. [2024-11-27 20:10:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1962 states have (on average 1.4689092762487257) internal successors, (2882), 1962 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2882 transitions. [2024-11-27 20:10:14,360 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2882 transitions. Word has length 69 [2024-11-27 20:10:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:14,361 INFO L471 AbstractCegarLoop]: Abstraction has 1963 states and 2882 transitions. [2024-11-27 20:10:14,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:14,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2882 transitions. [2024-11-27 20:10:14,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:10:14,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:14,362 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:14,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:10:14,363 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:14,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1402170943, now seen corresponding path program 1 times [2024-11-27 20:10:14,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:14,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741265049] [2024-11-27 20:10:14,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:14,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:14,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:14,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741265049] [2024-11-27 20:10:14,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741265049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:14,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:14,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:14,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054381274] [2024-11-27 20:10:14,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:14,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:14,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:14,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:14,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:14,453 INFO L87 Difference]: Start difference. First operand 1963 states and 2882 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:14,556 INFO L93 Difference]: Finished difference Result 5599 states and 8212 transitions. [2024-11-27 20:10:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-27 20:10:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:14,569 INFO L225 Difference]: With dead ends: 5599 [2024-11-27 20:10:14,569 INFO L226 Difference]: Without dead ends: 3685 [2024-11-27 20:10:14,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:14,574 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 57 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:14,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 271 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2024-11-27 20:10:14,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3683. [2024-11-27 20:10:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3683 states, 3682 states have (on average 1.4475828354155351) internal successors, (5330), 3682 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3683 states to 3683 states and 5330 transitions. [2024-11-27 20:10:14,727 INFO L78 Accepts]: Start accepts. Automaton has 3683 states and 5330 transitions. Word has length 69 [2024-11-27 20:10:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:14,727 INFO L471 AbstractCegarLoop]: Abstraction has 3683 states and 5330 transitions. [2024-11-27 20:10:14,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3683 states and 5330 transitions. [2024-11-27 20:10:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:10:14,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:14,731 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:14,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:10:14,731 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:14,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:14,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2089070273, now seen corresponding path program 1 times [2024-11-27 20:10:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:14,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449858715] [2024-11-27 20:10:14,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:14,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:14,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:14,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449858715] [2024-11-27 20:10:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449858715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:14,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:14,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:14,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560479633] [2024-11-27 20:10:14,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:14,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:14,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:14,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:14,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:14,819 INFO L87 Difference]: Start difference. First operand 3683 states and 5330 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:15,014 INFO L93 Difference]: Finished difference Result 10567 states and 15220 transitions. [2024-11-27 20:10:15,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:15,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-27 20:10:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:15,040 INFO L225 Difference]: With dead ends: 10567 [2024-11-27 20:10:15,040 INFO L226 Difference]: Without dead ends: 6933 [2024-11-27 20:10:15,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:15,046 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 63 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:15,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 273 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6933 states. [2024-11-27 20:10:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6933 to 6931. [2024-11-27 20:10:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6931 states, 6930 states have (on average 1.4202020202020202) internal successors, (9842), 6930 states have internal predecessors, (9842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6931 states to 6931 states and 9842 transitions. [2024-11-27 20:10:15,330 INFO L78 Accepts]: Start accepts. Automaton has 6931 states and 9842 transitions. Word has length 69 [2024-11-27 20:10:15,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:15,331 INFO L471 AbstractCegarLoop]: Abstraction has 6931 states and 9842 transitions. [2024-11-27 20:10:15,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:15,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6931 states and 9842 transitions. [2024-11-27 20:10:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 20:10:15,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:15,335 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:15,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:10:15,335 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:15,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:15,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1702734658, now seen corresponding path program 1 times [2024-11-27 20:10:15,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:15,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435850975] [2024-11-27 20:10:15,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:15,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:10:15,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435850975] [2024-11-27 20:10:15,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435850975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:15,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:15,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:10:15,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360498120] [2024-11-27 20:10:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:15,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:10:15,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:15,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:10:15,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:10:15,603 INFO L87 Difference]: Start difference. First operand 6931 states and 9842 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:16,843 INFO L93 Difference]: Finished difference Result 47649 states and 67737 transitions. [2024-11-27 20:10:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:10:16,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 91 [2024-11-27 20:10:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:16,979 INFO L225 Difference]: With dead ends: 47649 [2024-11-27 20:10:16,979 INFO L226 Difference]: Without dead ends: 42783 [2024-11-27 20:10:16,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:10:16,994 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 893 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:16,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1163 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:10:17,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42783 states. [2024-11-27 20:10:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42783 to 12819. [2024-11-27 20:10:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12819 states, 12818 states have (on average 1.4144172257762522) internal successors, (18130), 12818 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12819 states to 12819 states and 18130 transitions. [2024-11-27 20:10:18,070 INFO L78 Accepts]: Start accepts. Automaton has 12819 states and 18130 transitions. Word has length 91 [2024-11-27 20:10:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:18,071 INFO L471 AbstractCegarLoop]: Abstraction has 12819 states and 18130 transitions. [2024-11-27 20:10:18,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 12819 states and 18130 transitions. [2024-11-27 20:10:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 20:10:18,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:18,076 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:18,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:10:18,076 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:18,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1539820098, now seen corresponding path program 1 times [2024-11-27 20:10:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:18,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489518007] [2024-11-27 20:10:18,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:10:18,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489518007] [2024-11-27 20:10:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489518007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:18,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:18,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:10:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20634003] [2024-11-27 20:10:18,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:18,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:10:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:18,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:10:18,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:10:18,409 INFO L87 Difference]: Start difference. First operand 12819 states and 18130 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:19,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:19,786 INFO L93 Difference]: Finished difference Result 54529 states and 77465 transitions. [2024-11-27 20:10:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:10:19,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 91 [2024-11-27 20:10:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:19,965 INFO L225 Difference]: With dead ends: 54529 [2024-11-27 20:10:19,965 INFO L226 Difference]: Without dead ends: 47647 [2024-11-27 20:10:19,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:10:19,982 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 895 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:19,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1120 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:10:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47647 states. [2024-11-27 20:10:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47647 to 22131. [2024-11-27 20:10:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22131 states, 22130 states have (on average 1.4106642566651604) internal successors, (31218), 22130 states have internal predecessors, (31218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22131 states to 22131 states and 31218 transitions. [2024-11-27 20:10:21,284 INFO L78 Accepts]: Start accepts. Automaton has 22131 states and 31218 transitions. Word has length 91 [2024-11-27 20:10:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:21,284 INFO L471 AbstractCegarLoop]: Abstraction has 22131 states and 31218 transitions. [2024-11-27 20:10:21,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 22131 states and 31218 transitions. [2024-11-27 20:10:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 20:10:21,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:21,291 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:21,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:10:21,291 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:21,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:21,292 INFO L85 PathProgramCache]: Analyzing trace with hash -37701698, now seen corresponding path program 1 times [2024-11-27 20:10:21,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:21,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028925250] [2024-11-27 20:10:21,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:21,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:10:21,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:21,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028925250] [2024-11-27 20:10:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028925250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:21,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:21,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:10:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424824414] [2024-11-27 20:10:21,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:21,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:10:21,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:21,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:10:21,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:10:21,649 INFO L87 Difference]: Start difference. First operand 22131 states and 31218 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:23,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:23,322 INFO L93 Difference]: Finished difference Result 61409 states and 87161 transitions. [2024-11-27 20:10:23,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:10:23,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 91 [2024-11-27 20:10:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:23,452 INFO L225 Difference]: With dead ends: 61409 [2024-11-27 20:10:23,452 INFO L226 Difference]: Without dead ends: 54527 [2024-11-27 20:10:23,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:10:23,468 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 939 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:23,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1134 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:10:23,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54527 states. [2024-11-27 20:10:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54527 to 29011. [2024-11-27 20:10:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29011 states, 29010 states have (on average 1.4103412616339193) internal successors, (40914), 29010 states have internal predecessors, (40914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29011 states to 29011 states and 40914 transitions. [2024-11-27 20:10:24,620 INFO L78 Accepts]: Start accepts. Automaton has 29011 states and 40914 transitions. Word has length 91 [2024-11-27 20:10:24,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:24,620 INFO L471 AbstractCegarLoop]: Abstraction has 29011 states and 40914 transitions. [2024-11-27 20:10:24,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 29011 states and 40914 transitions. [2024-11-27 20:10:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 20:10:24,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:24,627 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:24,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:10:24,628 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:24,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2041796798, now seen corresponding path program 1 times [2024-11-27 20:10:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582542731] [2024-11-27 20:10:24,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-27 20:10:24,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:24,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582542731] [2024-11-27 20:10:24,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582542731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:24,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:24,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:10:24,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356600616] [2024-11-27 20:10:24,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:24,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:10:24,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:24,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:10:24,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:10:24,894 INFO L87 Difference]: Start difference. First operand 29011 states and 40914 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:26,807 INFO L93 Difference]: Finished difference Result 68289 states and 96857 transitions. [2024-11-27 20:10:26,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:10:26,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 91 [2024-11-27 20:10:26,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:26,935 INFO L225 Difference]: With dead ends: 68289 [2024-11-27 20:10:26,935 INFO L226 Difference]: Without dead ends: 61407 [2024-11-27 20:10:26,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:10:26,949 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 997 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:26,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 1078 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:10:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61407 states. [2024-11-27 20:10:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61407 to 35891. [2024-11-27 20:10:28,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35891 states, 35890 states have (on average 1.4101421008637502) internal successors, (50610), 35890 states have internal predecessors, (50610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35891 states to 35891 states and 50610 transitions. [2024-11-27 20:10:28,183 INFO L78 Accepts]: Start accepts. Automaton has 35891 states and 50610 transitions. Word has length 91 [2024-11-27 20:10:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:28,184 INFO L471 AbstractCegarLoop]: Abstraction has 35891 states and 50610 transitions. [2024-11-27 20:10:28,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 35891 states and 50610 transitions. [2024-11-27 20:10:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 20:10:28,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:28,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:28,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:10:28,189 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:28,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash -472237634, now seen corresponding path program 1 times [2024-11-27 20:10:28,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:28,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928069672] [2024-11-27 20:10:28,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:28,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:10:28,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:28,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928069672] [2024-11-27 20:10:28,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928069672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:28,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:28,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:10:28,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435465280] [2024-11-27 20:10:28,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:28,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:10:28,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:28,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:10:28,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:10:28,436 INFO L87 Difference]: Start difference. First operand 35891 states and 50610 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2024-11-27 20:10:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:30,389 INFO L93 Difference]: Finished difference Result 75169 states and 106553 transitions. [2024-11-27 20:10:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:10:30,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 91 [2024-11-27 20:10:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:30,492 INFO L225 Difference]: With dead ends: 75169 [2024-11-27 20:10:30,492 INFO L226 Difference]: Without dead ends: 68287 [2024-11-27 20:10:30,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:10:30,511 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 905 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:30,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1156 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:10:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68287 states. [2024-11-27 20:10:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68287 to 42771. [2024-11-27 20:10:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42771 states, 42770 states have (on average 1.4100070142623333) internal successors, (60306), 42770 states have internal predecessors, (60306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42771 states to 42771 states and 60306 transitions. [2024-11-27 20:10:32,078 INFO L78 Accepts]: Start accepts. Automaton has 42771 states and 60306 transitions. Word has length 91 [2024-11-27 20:10:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:32,078 INFO L471 AbstractCegarLoop]: Abstraction has 42771 states and 60306 transitions. [2024-11-27 20:10:32,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2024-11-27 20:10:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 42771 states and 60306 transitions. [2024-11-27 20:10:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 20:10:32,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:32,083 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:32,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:10:32,083 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:32,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1275963714, now seen corresponding path program 1 times [2024-11-27 20:10:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:32,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851941607] [2024-11-27 20:10:32,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 20:10:32,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:32,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851941607] [2024-11-27 20:10:32,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851941607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:32,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:32,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:10:32,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432731261] [2024-11-27 20:10:32,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:32,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:10:32,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:32,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:10:32,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:10:32,299 INFO L87 Difference]: Start difference. First operand 42771 states and 60306 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:34,050 INFO L93 Difference]: Finished difference Result 82049 states and 116249 transitions. [2024-11-27 20:10:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:10:34,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 91 [2024-11-27 20:10:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:34,164 INFO L225 Difference]: With dead ends: 82049 [2024-11-27 20:10:34,164 INFO L226 Difference]: Without dead ends: 75167 [2024-11-27 20:10:34,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:10:34,184 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 844 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:34,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1277 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:10:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75167 states. [2024-11-27 20:10:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75167 to 49651. [2024-11-27 20:10:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49651 states, 49650 states have (on average 1.4099093655589123) internal successors, (70002), 49650 states have internal predecessors, (70002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49651 states to 49651 states and 70002 transitions. [2024-11-27 20:10:36,199 INFO L78 Accepts]: Start accepts. Automaton has 49651 states and 70002 transitions. Word has length 91 [2024-11-27 20:10:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:36,199 INFO L471 AbstractCegarLoop]: Abstraction has 49651 states and 70002 transitions. [2024-11-27 20:10:36,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:36,200 INFO L276 IsEmpty]: Start isEmpty. Operand 49651 states and 70002 transitions. [2024-11-27 20:10:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-27 20:10:36,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:36,207 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:36,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:10:36,207 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:36,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:36,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1294112570, now seen corresponding path program 1 times [2024-11-27 20:10:36,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:36,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187739279] [2024-11-27 20:10:36,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:36,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:36,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187739279] [2024-11-27 20:10:36,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187739279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:36,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:36,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:36,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608811137] [2024-11-27 20:10:36,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:36,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:36,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:36,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:36,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:36,404 INFO L87 Difference]: Start difference. First operand 49651 states and 70002 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:38,229 INFO L93 Difference]: Finished difference Result 99255 states and 139956 transitions. [2024-11-27 20:10:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:38,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-27 20:10:38,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:38,286 INFO L225 Difference]: With dead ends: 99255 [2024-11-27 20:10:38,286 INFO L226 Difference]: Without dead ends: 49653 [2024-11-27 20:10:38,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:38,311 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 53 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:38,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 279 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49653 states. [2024-11-27 20:10:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49653 to 49651. [2024-11-27 20:10:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49651 states, 49650 states have (on average 1.3960523665659617) internal successors, (69314), 49650 states have internal predecessors, (69314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49651 states to 49651 states and 69314 transitions. [2024-11-27 20:10:40,145 INFO L78 Accepts]: Start accepts. Automaton has 49651 states and 69314 transitions. Word has length 92 [2024-11-27 20:10:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:40,145 INFO L471 AbstractCegarLoop]: Abstraction has 49651 states and 69314 transitions. [2024-11-27 20:10:40,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 49651 states and 69314 transitions. [2024-11-27 20:10:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-27 20:10:40,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:40,148 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:40,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:10:40,148 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:40,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash 647402166, now seen corresponding path program 1 times [2024-11-27 20:10:40,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:40,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521713502] [2024-11-27 20:10:40,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:40,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:40,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521713502] [2024-11-27 20:10:40,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521713502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:40,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:40,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:40,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402626197] [2024-11-27 20:10:40,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:40,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:40,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:40,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:40,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:40,273 INFO L87 Difference]: Start difference. First operand 49651 states and 69314 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:40,882 INFO L93 Difference]: Finished difference Result 67917 states and 95019 transitions. [2024-11-27 20:10:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-11-27 20:10:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:40,912 INFO L225 Difference]: With dead ends: 67917 [2024-11-27 20:10:40,912 INFO L226 Difference]: Without dead ends: 18315 [2024-11-27 20:10:40,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:40,940 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 47 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:40,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 276 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18315 states. [2024-11-27 20:10:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18315 to 18306. [2024-11-27 20:10:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18306 states, 18305 states have (on average 1.3933351543294181) internal successors, (25505), 18305 states have internal predecessors, (25505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18306 states to 18306 states and 25505 transitions. [2024-11-27 20:10:41,505 INFO L78 Accepts]: Start accepts. Automaton has 18306 states and 25505 transitions. Word has length 93 [2024-11-27 20:10:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:41,505 INFO L471 AbstractCegarLoop]: Abstraction has 18306 states and 25505 transitions. [2024-11-27 20:10:41,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 18306 states and 25505 transitions. [2024-11-27 20:10:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-27 20:10:41,507 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:41,507 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:41,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:10:41,507 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:41,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:41,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1000464468, now seen corresponding path program 1 times [2024-11-27 20:10:41,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:41,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708474011] [2024-11-27 20:10:41,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:41,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:41,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:41,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708474011] [2024-11-27 20:10:41,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708474011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:41,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:41,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:41,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300450900] [2024-11-27 20:10:41,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:41,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:41,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:41,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:41,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:41,633 INFO L87 Difference]: Start difference. First operand 18306 states and 25505 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:42,083 INFO L93 Difference]: Finished difference Result 27430 states and 38227 transitions. [2024-11-27 20:10:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:42,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2024-11-27 20:10:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:42,099 INFO L225 Difference]: With dead ends: 27430 [2024-11-27 20:10:42,099 INFO L226 Difference]: Without dead ends: 9188 [2024-11-27 20:10:42,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:42,112 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 49 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:42,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 255 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2024-11-27 20:10:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 9186. [2024-11-27 20:10:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9185 states have (on average 1.3788786064235166) internal successors, (12665), 9185 states have internal predecessors, (12665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 12665 transitions. [2024-11-27 20:10:42,619 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 12665 transitions. Word has length 94 [2024-11-27 20:10:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:42,620 INFO L471 AbstractCegarLoop]: Abstraction has 9186 states and 12665 transitions. [2024-11-27 20:10:42,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 12665 transitions. [2024-11-27 20:10:42,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-27 20:10:42,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:42,623 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:42,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:10:42,623 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:42,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:42,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1898811038, now seen corresponding path program 1 times [2024-11-27 20:10:42,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:42,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751483532] [2024-11-27 20:10:42,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:42,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:42,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:42,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751483532] [2024-11-27 20:10:42,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751483532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:42,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:42,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:42,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356876745] [2024-11-27 20:10:42,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:42,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:42,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:42,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:42,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:42,801 INFO L87 Difference]: Start difference. First operand 9186 states and 12665 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:43,159 INFO L93 Difference]: Finished difference Result 13750 states and 18967 transitions. [2024-11-27 20:10:43,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:43,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-11-27 20:10:43,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:43,170 INFO L225 Difference]: With dead ends: 13750 [2024-11-27 20:10:43,171 INFO L226 Difference]: Without dead ends: 4628 [2024-11-27 20:10:43,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:43,177 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 46 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:43,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 240 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2024-11-27 20:10:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4626. [2024-11-27 20:10:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4625 states have (on average 1.3632432432432433) internal successors, (6305), 4625 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 6305 transitions. [2024-11-27 20:10:43,340 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 6305 transitions. Word has length 96 [2024-11-27 20:10:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:43,340 INFO L471 AbstractCegarLoop]: Abstraction has 4626 states and 6305 transitions. [2024-11-27 20:10:43,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 6305 transitions. [2024-11-27 20:10:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-27 20:10:43,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:43,342 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:43,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:10:43,342 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:43,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:43,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1409022960, now seen corresponding path program 1 times [2024-11-27 20:10:43,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:43,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736406121] [2024-11-27 20:10:43,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:43,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:43,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:43,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736406121] [2024-11-27 20:10:43,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736406121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:43,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:43,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:43,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566775404] [2024-11-27 20:10:43,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:43,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:43,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:43,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:43,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:43,476 INFO L87 Difference]: Start difference. First operand 4626 states and 6305 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:43,561 INFO L93 Difference]: Finished difference Result 6910 states and 9427 transitions. [2024-11-27 20:10:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:43,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-27 20:10:43,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:43,566 INFO L225 Difference]: With dead ends: 6910 [2024-11-27 20:10:43,567 INFO L226 Difference]: Without dead ends: 2348 [2024-11-27 20:10:43,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:43,570 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 43 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:43,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 225 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2024-11-27 20:10:43,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2024-11-27 20:10:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2345 states have (on average 1.3454157782515992) internal successors, (3155), 2345 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:43,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3155 transitions. [2024-11-27 20:10:43,655 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3155 transitions. Word has length 98 [2024-11-27 20:10:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:43,655 INFO L471 AbstractCegarLoop]: Abstraction has 2346 states and 3155 transitions. [2024-11-27 20:10:43,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:43,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3155 transitions. [2024-11-27 20:10:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-27 20:10:43,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:43,657 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:43,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 20:10:43,657 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:43,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:43,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1388093442, now seen corresponding path program 1 times [2024-11-27 20:10:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:43,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754506212] [2024-11-27 20:10:43,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:43,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:43,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:43,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754506212] [2024-11-27 20:10:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754506212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:43,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:43,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542110663] [2024-11-27 20:10:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:43,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:43,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:43,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:43,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:43,792 INFO L87 Difference]: Start difference. First operand 2346 states and 3155 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:43,846 INFO L93 Difference]: Finished difference Result 3490 states and 4702 transitions. [2024-11-27 20:10:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:43,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2024-11-27 20:10:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:43,851 INFO L225 Difference]: With dead ends: 3490 [2024-11-27 20:10:43,851 INFO L226 Difference]: Without dead ends: 1208 [2024-11-27 20:10:43,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:43,854 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 40 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:43,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 210 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:10:43,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2024-11-27 20:10:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2024-11-27 20:10:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 1.3236514522821576) internal successors, (1595), 1205 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) [2024-11-27 20:10:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1595 transitions. [2024-11-27 20:10:43,888 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1595 transitions. Word has length 100 [2024-11-27 20:10:43,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:43,888 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 1595 transitions. [2024-11-27 20:10:43,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1595 transitions. [2024-11-27 20:10:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 20:10:43,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:43,889 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:43,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 20:10:43,889 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:43,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1164279180, now seen corresponding path program 1 times [2024-11-27 20:10:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:43,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490385436] [2024-11-27 20:10:43,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:45,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:45,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490385436] [2024-11-27 20:10:45,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490385436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:45,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208365424] [2024-11-27 20:10:45,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:45,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:45,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:45,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:45,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:10:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:45,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:10:45,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:10:46,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:10:46,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208365424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:46,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:46,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-27 20:10:46,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501240062] [2024-11-27 20:10:46,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:46,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:10:46,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:46,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:10:46,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:10:46,739 INFO L87 Difference]: Start difference. First operand 1206 states and 1595 transitions. Second operand has 19 states, 19 states have (on average 15.157894736842104) internal successors, (288), 19 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:49,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:49,476 INFO L93 Difference]: Finished difference Result 6713 states and 8820 transitions. [2024-11-27 20:10:49,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 20:10:49,476 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.157894736842104) internal successors, (288), 19 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-27 20:10:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:49,484 INFO L225 Difference]: With dead ends: 6713 [2024-11-27 20:10:49,485 INFO L226 Difference]: Without dead ends: 5571 [2024-11-27 20:10:49,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=539, Invalid=2217, Unknown=0, NotChecked=0, Total=2756 [2024-11-27 20:10:49,488 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 1775 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:49,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 815 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:10:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5571 states. [2024-11-27 20:10:49,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5571 to 5351. [2024-11-27 20:10:49,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5351 states, 5350 states have (on average 1.283551401869159) internal successors, (6867), 5350 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 6867 transitions. [2024-11-27 20:10:49,747 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 6867 transitions. Word has length 102 [2024-11-27 20:10:49,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:49,747 INFO L471 AbstractCegarLoop]: Abstraction has 5351 states and 6867 transitions. [2024-11-27 20:10:49,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.157894736842104) internal successors, (288), 19 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:49,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 6867 transitions. [2024-11-27 20:10:49,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 20:10:49,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:49,749 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:49,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:49,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 20:10:49,949 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:49,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1879536338, now seen corresponding path program 1 times [2024-11-27 20:10:49,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:49,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961872180] [2024-11-27 20:10:49,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:49,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:50,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:50,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961872180] [2024-11-27 20:10:50,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961872180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:50,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196528279] [2024-11-27 20:10:50,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:50,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:50,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:50,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:50,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:10:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:51,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:10:51,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:51,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:53,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196528279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:53,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:53,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-11-27 20:10:53,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594006535] [2024-11-27 20:10:53,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:53,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 20:10:53,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:53,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 20:10:53,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-11-27 20:10:53,104 INFO L87 Difference]: Start difference. First operand 5351 states and 6867 transitions. Second operand has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:55,131 INFO L93 Difference]: Finished difference Result 25386 states and 32859 transitions. [2024-11-27 20:10:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 20:10:55,132 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-27 20:10:55,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:55,160 INFO L225 Difference]: With dead ends: 25386 [2024-11-27 20:10:55,160 INFO L226 Difference]: Without dead ends: 20850 [2024-11-27 20:10:55,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=647, Invalid=2433, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 20:10:55,171 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 2297 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:55,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2297 Valid, 994 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:10:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20850 states. [2024-11-27 20:10:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20850 to 20838. [2024-11-27 20:10:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20838 states, 20837 states have (on average 1.2843499544080241) internal successors, (26762), 20837 states have internal predecessors, (26762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20838 states to 20838 states and 26762 transitions. [2024-11-27 20:10:55,956 INFO L78 Accepts]: Start accepts. Automaton has 20838 states and 26762 transitions. Word has length 103 [2024-11-27 20:10:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:55,956 INFO L471 AbstractCegarLoop]: Abstraction has 20838 states and 26762 transitions. [2024-11-27 20:10:55,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:55,957 INFO L276 IsEmpty]: Start isEmpty. Operand 20838 states and 26762 transitions. [2024-11-27 20:10:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 20:10:55,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:55,958 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:55,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:10:56,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 20:10:56,163 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:56,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash 463878702, now seen corresponding path program 1 times [2024-11-27 20:10:56,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:56,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529420826] [2024-11-27 20:10:56,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:56,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529420826] [2024-11-27 20:10:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529420826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889690531] [2024-11-27 20:10:57,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:57,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:57,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:57,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:57,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:10:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:57,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:10:57,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:58,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:59,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889690531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:59,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:59,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-27 20:10:59,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718118444] [2024-11-27 20:10:59,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:59,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 20:10:59,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:59,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 20:10:59,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:10:59,867 INFO L87 Difference]: Start difference. First operand 20838 states and 26762 transitions. Second operand has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:11:04,709 INFO L93 Difference]: Finished difference Result 87546 states and 114301 transitions. [2024-11-27 20:11:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-27 20:11:04,710 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 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 103 [2024-11-27 20:11:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:11:04,794 INFO L225 Difference]: With dead ends: 87546 [2024-11-27 20:11:04,795 INFO L226 Difference]: Without dead ends: 67342 [2024-11-27 20:11:04,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=830, Invalid=2952, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 20:11:04,815 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 2341 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:11:04,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 1091 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:11:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67342 states. [2024-11-27 20:11:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67342 to 66825. [2024-11-27 20:11:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66825 states, 66824 states have (on average 1.279345744044056) internal successors, (85491), 66824 states have internal predecessors, (85491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66825 states to 66825 states and 85491 transitions. [2024-11-27 20:11:06,935 INFO L78 Accepts]: Start accepts. Automaton has 66825 states and 85491 transitions. Word has length 103 [2024-11-27 20:11:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:11:06,936 INFO L471 AbstractCegarLoop]: Abstraction has 66825 states and 85491 transitions. [2024-11-27 20:11:06,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 27 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 66825 states and 85491 transitions. [2024-11-27 20:11:06,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 20:11:06,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:11:06,937 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:06,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:11:07,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 20:11:07,138 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:11:07,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:07,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1591294046, now seen corresponding path program 1 times [2024-11-27 20:11:07,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:07,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897801222] [2024-11-27 20:11:07,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:07,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:07,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:07,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897801222] [2024-11-27 20:11:07,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897801222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:07,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569120206] [2024-11-27 20:11:07,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:07,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:07,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:07,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:07,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:11:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:07,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 20:11:07,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:08,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:10,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569120206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:10,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:10,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-11-27 20:11:10,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881383490] [2024-11-27 20:11:10,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:10,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 20:11:10,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:10,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 20:11:10,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:11:10,536 INFO L87 Difference]: Start difference. First operand 66825 states and 85491 transitions. Second operand has 30 states, 30 states have (on average 8.5) internal successors, (255), 30 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:11:14,868 INFO L93 Difference]: Finished difference Result 131414 states and 168326 transitions. [2024-11-27 20:11:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:11:14,868 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.5) internal successors, (255), 30 states have internal predecessors, (255), 0 states have call successors, (0), 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 104 [2024-11-27 20:11:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:11:14,940 INFO L225 Difference]: With dead ends: 131414 [2024-11-27 20:11:14,940 INFO L226 Difference]: Without dead ends: 66762 [2024-11-27 20:11:14,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=616, Invalid=2354, Unknown=0, NotChecked=0, Total=2970 [2024-11-27 20:11:14,978 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 2081 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:11:14,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 1100 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:11:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66762 states. [2024-11-27 20:11:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66762 to 40473. [2024-11-27 20:11:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40473 states, 40472 states have (on average 1.2714222178296106) internal successors, (51457), 40472 states have internal predecessors, (51457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40473 states to 40473 states and 51457 transitions. [2024-11-27 20:11:17,093 INFO L78 Accepts]: Start accepts. Automaton has 40473 states and 51457 transitions. Word has length 104 [2024-11-27 20:11:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:11:17,093 INFO L471 AbstractCegarLoop]: Abstraction has 40473 states and 51457 transitions. [2024-11-27 20:11:17,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.5) internal successors, (255), 30 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 40473 states and 51457 transitions. [2024-11-27 20:11:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 20:11:17,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:11:17,095 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:17,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:17,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 20:11:17,295 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:11:17,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1768772890, now seen corresponding path program 1 times [2024-11-27 20:11:17,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:17,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180785710] [2024-11-27 20:11:17,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:17,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:17,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:17,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180785710] [2024-11-27 20:11:17,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180785710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:17,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225970106] [2024-11-27 20:11:17,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:17,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:17,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:17,680 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:17,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a41cd06-1eaf-4da7-9979-5dc9e683f3f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:11:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:17,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 20:11:17,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:18,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:20,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225970106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:20,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:20,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-27 20:11:20,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312641147] [2024-11-27 20:11:20,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:20,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 20:11:20,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:20,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 20:11:20,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2024-11-27 20:11:20,345 INFO L87 Difference]: Start difference. First operand 40473 states and 51457 transitions. Second operand has 32 states, 32 states have (on average 9.03125) internal successors, (289), 32 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)