./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i --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_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c554204f9340f445d5caf6fceb919bd7ca7d94cde437779a40eaa60e7857908 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:24:10,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:24:10,235 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:24:10,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:24:10,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:24:10,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:24:10,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:24:10,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:24:10,264 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:24:10,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:24:10,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:24:10,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:24:10,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:24:10,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:24:10,265 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:24:10,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:24:10,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:24:10,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:24:10,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:24:10,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:24:10,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:24:10,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:24:10,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:24:10,266 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:24:10,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:24:10,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:24:10,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:24:10,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:24:10,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:24:10,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:24:10,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:24:10,267 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:24:10,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:24:10,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:24:10,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:24:10,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:24:10,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:24:10,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:24:10,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:24:10,268 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_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c554204f9340f445d5caf6fceb919bd7ca7d94cde437779a40eaa60e7857908 [2024-12-02 15:24:10,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:24:10,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:24:10,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:24:10,513 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:24:10,513 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:24:10,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i [2024-12-02 15:24:13,097 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/data/3eedc06b3/9b8ca1c19c254657b8442b53416f490d/FLAG1ba3c40b8 [2024-12-02 15:24:13,325 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:24:13,325 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i [2024-12-02 15:24:13,334 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/data/3eedc06b3/9b8ca1c19c254657b8442b53416f490d/FLAG1ba3c40b8 [2024-12-02 15:24:13,685 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/data/3eedc06b3/9b8ca1c19c254657b8442b53416f490d [2024-12-02 15:24:13,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:24:13,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:24:13,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:24:13,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:24:13,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:24:13,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:13,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d7fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13, skipping insertion in model container [2024-12-02 15:24:13,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:13,710 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:24:13,833 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_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i[919,932] [2024-12-02 15:24:13,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:24:13,904 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:24:13,915 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_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i[919,932] [2024-12-02 15:24:13,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:24:13,958 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:24:13,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13 WrapperNode [2024-12-02 15:24:13,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:24:13,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:24:13,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:24:13,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:24:13,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:13,975 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,009 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 194 [2024-12-02 15:24:14,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:24:14,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:24:14,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:24:14,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:24:14,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,023 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,041 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 15:24:14,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,051 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:24:14,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:24:14,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:24:14,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:24:14,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (1/1) ... [2024-12-02 15:24:14,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:24:14,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:24:14,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:24:14,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:24:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:24:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:24:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:24:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:24:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:24:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:24:14,204 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:24:14,206 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:24:14,618 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-12-02 15:24:14,619 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:24:14,627 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:24:14,628 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 15:24:14,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:24:14 BoogieIcfgContainer [2024-12-02 15:24:14,628 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:24:14,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:24:14,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:24:14,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:24:14,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:24:13" (1/3) ... [2024-12-02 15:24:14,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b9b5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:24:14, skipping insertion in model container [2024-12-02 15:24:14,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:24:13" (2/3) ... [2024-12-02 15:24:14,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b9b5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:24:14, skipping insertion in model container [2024-12-02 15:24:14,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:24:14" (3/3) ... [2024-12-02 15:24:14,636 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i [2024-12-02 15:24:14,646 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:24:14,648 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i that has 2 procedures, 83 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:24:14,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:24:14,706 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;@3586b07d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:24:14,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:24:14,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 61 states have internal predecessors, (91), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:24:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 15:24:14,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:14,721 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:24:14,722 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:14,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:14,726 INFO L85 PathProgramCache]: Analyzing trace with hash -49966647, now seen corresponding path program 1 times [2024-12-02 15:24:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:14,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105701488] [2024-12-02 15:24:14,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:14,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 15:24:14,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:14,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105701488] [2024-12-02 15:24:14,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105701488] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:24:14,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059052045] [2024-12-02 15:24:14,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:14,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:24:14,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:24:14,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:24:14,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:24:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:15,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:24:15,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:24:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 15:24:15,160 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:24:15,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059052045] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:15,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:24:15,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:24:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719643293] [2024-12-02 15:24:15,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:15,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:24:15,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:15,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:24:15,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:24:15,181 INFO L87 Difference]: Start difference. First operand has 83 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 61 states have internal predecessors, (91), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:24:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:15,199 INFO L93 Difference]: Finished difference Result 159 states and 276 transitions. [2024-12-02 15:24:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:24:15,201 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 138 [2024-12-02 15:24:15,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:15,206 INFO L225 Difference]: With dead ends: 159 [2024-12-02 15:24:15,207 INFO L226 Difference]: Without dead ends: 79 [2024-12-02 15:24:15,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:24:15,212 INFO L435 NwaCegarLoop]: 121 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, 121 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 [2024-12-02 15:24:15,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:24:15,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-12-02 15:24:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-12-02 15:24:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 states have internal predecessors, (81), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:24:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 121 transitions. [2024-12-02 15:24:15,249 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 121 transitions. Word has length 138 [2024-12-02 15:24:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:15,249 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 121 transitions. [2024-12-02 15:24:15,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:24:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 121 transitions. [2024-12-02 15:24:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 15:24:15,252 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:15,253 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:24:15,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:24:15,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 15:24:15,453 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:15,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:15,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1232842543, now seen corresponding path program 1 times [2024-12-02 15:24:15,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:15,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578009419] [2024-12-02 15:24:15,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:15,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:24:15,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:15,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578009419] [2024-12-02 15:24:15,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578009419] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:15,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:24:15,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:24:15,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426079892] [2024-12-02 15:24:15,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:15,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:24:15,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:15,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:24:15,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:24:15,782 INFO L87 Difference]: Start difference. First operand 79 states and 121 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:24:15,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:15,851 INFO L93 Difference]: Finished difference Result 155 states and 239 transitions. [2024-12-02 15:24:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:24:15,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 138 [2024-12-02 15:24:15,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:15,854 INFO L225 Difference]: With dead ends: 155 [2024-12-02 15:24:15,854 INFO L226 Difference]: Without dead ends: 79 [2024-12-02 15:24:15,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:24:15,856 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:15,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:24:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-12-02 15:24:15,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-12-02 15:24:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 57 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:24:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 120 transitions. [2024-12-02 15:24:15,867 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 120 transitions. Word has length 138 [2024-12-02 15:24:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:15,868 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 120 transitions. [2024-12-02 15:24:15,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:24:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 120 transitions. [2024-12-02 15:24:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 15:24:15,870 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:15,870 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:24:15,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:24:15,870 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:15,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash -552784173, now seen corresponding path program 1 times [2024-12-02 15:24:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:15,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496227035] [2024-12-02 15:24:15,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:24:16,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:16,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496227035] [2024-12-02 15:24:16,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496227035] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:16,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:24:16,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:24:16,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230677991] [2024-12-02 15:24:16,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:16,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:24:16,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:16,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:24:16,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:24:16,222 INFO L87 Difference]: Start difference. First operand 79 states and 120 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:24:16,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:16,369 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2024-12-02 15:24:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:24:16,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 138 [2024-12-02 15:24:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:16,373 INFO L225 Difference]: With dead ends: 232 [2024-12-02 15:24:16,373 INFO L226 Difference]: Without dead ends: 156 [2024-12-02 15:24:16,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:24:16,374 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 107 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:16,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 344 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:24:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-12-02 15:24:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 117. [2024-12-02 15:24:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 15:24:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 177 transitions. [2024-12-02 15:24:16,399 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 177 transitions. Word has length 138 [2024-12-02 15:24:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:16,399 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 177 transitions. [2024-12-02 15:24:16,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:24:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 177 transitions. [2024-12-02 15:24:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 15:24:16,402 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:16,402 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:24:16,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:24:16,403 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:16,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1165230544, now seen corresponding path program 1 times [2024-12-02 15:24:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:16,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124137819] [2024-12-02 15:24:16,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:16,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:24:16,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:16,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124137819] [2024-12-02 15:24:16,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124137819] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:16,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:24:16,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:24:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487212020] [2024-12-02 15:24:16,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:16,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:24:16,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:16,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:24:16,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:24:16,940 INFO L87 Difference]: Start difference. First operand 117 states and 177 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:24:17,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:17,919 INFO L93 Difference]: Finished difference Result 405 states and 600 transitions. [2024-12-02 15:24:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:24:17,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 139 [2024-12-02 15:24:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:17,923 INFO L225 Difference]: With dead ends: 405 [2024-12-02 15:24:17,923 INFO L226 Difference]: Without dead ends: 329 [2024-12-02 15:24:17,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-12-02 15:24:17,925 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 484 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:17,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 606 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:24:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-12-02 15:24:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 193. [2024-12-02 15:24:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 129 states have (on average 1.3410852713178294) internal successors, (173), 129 states have internal predecessors, (173), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 15:24:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 293 transitions. [2024-12-02 15:24:17,961 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 293 transitions. Word has length 139 [2024-12-02 15:24:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:17,961 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 293 transitions. [2024-12-02 15:24:17,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:24:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 293 transitions. [2024-12-02 15:24:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 15:24:17,963 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:17,964 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:24:17,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:24:17,964 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:17,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1381184424, now seen corresponding path program 1 times [2024-12-02 15:24:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695792196] [2024-12-02 15:24:17,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:24:18,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695792196] [2024-12-02 15:24:18,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695792196] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:18,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:24:18,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:24:18,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437359165] [2024-12-02 15:24:18,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:18,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:24:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:18,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:24:18,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:24:18,542 INFO L87 Difference]: Start difference. First operand 193 states and 293 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:24:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:18,879 INFO L93 Difference]: Finished difference Result 437 states and 658 transitions. [2024-12-02 15:24:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 15:24:18,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2024-12-02 15:24:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:18,882 INFO L225 Difference]: With dead ends: 437 [2024-12-02 15:24:18,882 INFO L226 Difference]: Without dead ends: 285 [2024-12-02 15:24:18,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:24:18,884 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 119 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:18,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 456 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:24:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-12-02 15:24:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 230. [2024-12-02 15:24:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 165 states have (on average 1.406060606060606) internal successors, (232), 165 states have internal predecessors, (232), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 15:24:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 352 transitions. [2024-12-02 15:24:18,920 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 352 transitions. Word has length 140 [2024-12-02 15:24:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:18,920 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 352 transitions. [2024-12-02 15:24:18,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:24:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 352 transitions. [2024-12-02 15:24:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 15:24:18,922 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:18,922 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:24:18,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:24:18,922 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:18,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash -424253910, now seen corresponding path program 1 times [2024-12-02 15:24:18,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:18,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080840350] [2024-12-02 15:24:18,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:24:19,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080840350] [2024-12-02 15:24:19,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080840350] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:24:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661389017] [2024-12-02 15:24:19,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:19,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:24:19,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:24:19,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:24:19,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:24:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:19,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:24:19,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:24:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 217 proven. 48 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-12-02 15:24:19,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:24:19,837 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:24:19,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661389017] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:24:19,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:24:19,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-12-02 15:24:19,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701700082] [2024-12-02 15:24:19,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:24:19,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:24:19,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:19,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:24:19,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:24:19,839 INFO L87 Difference]: Start difference. First operand 230 states and 352 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2024-12-02 15:24:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:20,210 INFO L93 Difference]: Finished difference Result 414 states and 621 transitions. [2024-12-02 15:24:20,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:24:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 140 [2024-12-02 15:24:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:20,215 INFO L225 Difference]: With dead ends: 414 [2024-12-02 15:24:20,215 INFO L226 Difference]: Without dead ends: 243 [2024-12-02 15:24:20,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:24:20,216 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 145 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:20,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 188 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:24:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-12-02 15:24:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 205. [2024-12-02 15:24:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 137 states have (on average 1.2481751824817517) internal successors, (171), 137 states have internal predecessors, (171), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 15:24:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 291 transitions. [2024-12-02 15:24:20,247 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 291 transitions. Word has length 140 [2024-12-02 15:24:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:20,248 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 291 transitions. [2024-12-02 15:24:20,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2024-12-02 15:24:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 291 transitions. [2024-12-02 15:24:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 15:24:20,249 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:20,250 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:24:20,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:24:20,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 15:24:20,450 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:20,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:20,451 INFO L85 PathProgramCache]: Analyzing trace with hash 47854645, now seen corresponding path program 1 times [2024-12-02 15:24:20,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:20,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229603958] [2024-12-02 15:24:20,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:24:20,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:20,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229603958] [2024-12-02 15:24:20,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229603958] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:20,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:24:20,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:24:20,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389128068] [2024-12-02 15:24:20,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:20,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:24:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:20,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:24:20,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:24:20,550 INFO L87 Difference]: Start difference. First operand 205 states and 291 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:24:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:20,612 INFO L93 Difference]: Finished difference Result 438 states and 621 transitions. [2024-12-02 15:24:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:24:20,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-12-02 15:24:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:20,615 INFO L225 Difference]: With dead ends: 438 [2024-12-02 15:24:20,615 INFO L226 Difference]: Without dead ends: 282 [2024-12-02 15:24:20,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:24:20,617 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 79 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:20,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 205 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:24:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-12-02 15:24:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 229. [2024-12-02 15:24:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 161 states have (on average 1.2173913043478262) internal successors, (196), 161 states have internal predecessors, (196), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 15:24:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 316 transitions. [2024-12-02 15:24:20,648 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 316 transitions. Word has length 145 [2024-12-02 15:24:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:20,649 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 316 transitions. [2024-12-02 15:24:20,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:24:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 316 transitions. [2024-12-02 15:24:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 15:24:20,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:20,651 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:24:20,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:24:20,651 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:20,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1822862007, now seen corresponding path program 1 times [2024-12-02 15:24:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481875563] [2024-12-02 15:24:20,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:20,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 15:24:20,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496268331] [2024-12-02 15:24:20,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:20,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:24:20,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:24:20,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:24:20,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:24:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:20,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 15:24:20,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:24:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 159 proven. 51 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-12-02 15:24:21,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:24:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:24:21,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:21,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481875563] [2024-12-02 15:24:21,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 15:24:21,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496268331] [2024-12-02 15:24:21,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496268331] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:24:21,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:24:21,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2024-12-02 15:24:21,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378706751] [2024-12-02 15:24:21,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 15:24:21,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:24:21,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:21,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:24:21,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:24:21,486 INFO L87 Difference]: Start difference. First operand 229 states and 316 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-12-02 15:24:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:22,275 INFO L93 Difference]: Finished difference Result 437 states and 596 transitions. [2024-12-02 15:24:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:24:22,275 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 145 [2024-12-02 15:24:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:22,278 INFO L225 Difference]: With dead ends: 437 [2024-12-02 15:24:22,278 INFO L226 Difference]: Without dead ends: 249 [2024-12-02 15:24:22,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:24:22,279 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 105 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:22,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 387 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:24:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-12-02 15:24:22,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 237. [2024-12-02 15:24:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 167 states have (on average 1.1976047904191616) internal successors, (200), 167 states have internal predecessors, (200), 60 states have call successors, (60), 9 states have call predecessors, (60), 9 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 15:24:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 320 transitions. [2024-12-02 15:24:22,297 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 320 transitions. Word has length 145 [2024-12-02 15:24:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:22,298 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 320 transitions. [2024-12-02 15:24:22,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-12-02 15:24:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 320 transitions. [2024-12-02 15:24:22,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 15:24:22,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:22,299 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:24:22,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:24:22,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 15:24:22,500 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:22,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1848242774, now seen corresponding path program 1 times [2024-12-02 15:24:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:22,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902436619] [2024-12-02 15:24:22,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:22,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 15:24:22,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467273181] [2024-12-02 15:24:22,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:22,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:24:22,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:24:22,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:24:22,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:24:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:22,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:24:22,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:24:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 199 proven. 135 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2024-12-02 15:24:24,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:25:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902436619] [2024-12-02 15:25:17,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 15:25:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467273181] [2024-12-02 15:25:17,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467273181] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:25:17,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:25:17,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-12-02 15:25:17,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870771694] [2024-12-02 15:25:17,090 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 15:25:17,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:25:17,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:17,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:25:17,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:25:17,091 INFO L87 Difference]: Start difference. First operand 237 states and 320 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 15:25:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:25:17,724 INFO L93 Difference]: Finished difference Result 443 states and 589 transitions. [2024-12-02 15:25:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 15:25:17,725 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 146 [2024-12-02 15:25:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:25:17,727 INFO L225 Difference]: With dead ends: 443 [2024-12-02 15:25:17,727 INFO L226 Difference]: Without dead ends: 255 [2024-12-02 15:25:17,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:25:17,729 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:25:17,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 564 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:25:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-12-02 15:25:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2024-12-02 15:25:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 173 states have (on average 1.1849710982658959) internal successors, (205), 173 states have internal predecessors, (205), 60 states have call successors, (60), 11 states have call predecessors, (60), 11 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 15:25:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 325 transitions. [2024-12-02 15:25:17,759 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 325 transitions. Word has length 146 [2024-12-02 15:25:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:25:17,759 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 325 transitions. [2024-12-02 15:25:17,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 15:25:17,759 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 325 transitions. [2024-12-02 15:25:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 15:25:17,760 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:25:17,760 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:25:17,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:25:17,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:25:17,961 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:25:17,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1017226582, now seen corresponding path program 1 times [2024-12-02 15:25:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442891203] [2024-12-02 15:25:17,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:25:18,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:18,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442891203] [2024-12-02 15:25:18,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442891203] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:25:18,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299853401] [2024-12-02 15:25:18,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:18,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:25:18,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:25:18,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:25:18,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:25:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:18,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:25:18,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:25:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 379 proven. 21 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-12-02 15:25:18,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:25:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:25:18,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299853401] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:25:18,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:25:18,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-12-02 15:25:18,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612603532] [2024-12-02 15:25:18,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:25:18,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:25:18,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:18,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:25:18,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:25:18,597 INFO L87 Difference]: Start difference. First operand 245 states and 325 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 15:25:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:25:19,113 INFO L93 Difference]: Finished difference Result 702 states and 905 transitions. [2024-12-02 15:25:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 15:25:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 146 [2024-12-02 15:25:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:25:19,117 INFO L225 Difference]: With dead ends: 702 [2024-12-02 15:25:19,117 INFO L226 Difference]: Without dead ends: 510 [2024-12-02 15:25:19,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 290 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:25:19,119 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 431 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:25:19,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 332 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:25:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-12-02 15:25:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 395. [2024-12-02 15:25:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 288 states have (on average 1.1770833333333333) internal successors, (339), 290 states have internal predecessors, (339), 84 states have call successors, (84), 22 states have call predecessors, (84), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 15:25:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 507 transitions. [2024-12-02 15:25:19,180 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 507 transitions. Word has length 146 [2024-12-02 15:25:19,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:25:19,180 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 507 transitions. [2024-12-02 15:25:19,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 15:25:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 507 transitions. [2024-12-02 15:25:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 15:25:19,182 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:25:19,182 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:25:19,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:25:19,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 15:25:19,383 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:25:19,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash -507753492, now seen corresponding path program 1 times [2024-12-02 15:25:19,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:19,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364291361] [2024-12-02 15:25:19,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:19,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 15:25:19,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455617708] [2024-12-02 15:25:19,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:19,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:25:19,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:25:19,491 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:25:19,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_376db3a6-ec2a-4c10-b8c7-0edab758d1a4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:25:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:19,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 15:25:19,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:25:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 247 proven. 195 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-12-02 15:25:21,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:25:50,235 WARN L286 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:25:59,768 WARN L286 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)