./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 126c873ac57a82335825e3f2d45dd06becb6bf659c13732e3e8a1d9f445e9eec --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:19:54,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:19:54,146 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:19:54,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:19:54,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:19:54,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:19:54,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:19:54,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:19:54,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:19:54,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:19:54,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:19:54,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:19:54,183 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:19:54,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:19:54,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:19:54,184 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:19:54,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:19:54,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:19:54,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:19:54,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:19:54,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:19:54,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:19:54,189 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:19:54,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:19:54,190 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:19:54,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:19:54,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:19:54,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:19:54,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:54,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:19:54,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:19:54,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:19:54,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:19:54,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:19:54,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:19:54,196 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:19:54,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:19:54,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:19:54,197 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:19:54,197 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 126c873ac57a82335825e3f2d45dd06becb6bf659c13732e3e8a1d9f445e9eec [2023-11-06 22:19:54,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:19:54,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:19:54,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:19:54,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:19:54,487 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:19:54,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-21.i [2023-11-06 22:19:57,592 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:19:57,899 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:19:57,899 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-21.i [2023-11-06 22:19:57,911 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/data/a08e2fe39/0e24cf0fb14c40ed83507a7be9e7a89d/FLAGff2c9a62e [2023-11-06 22:19:57,925 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/data/a08e2fe39/0e24cf0fb14c40ed83507a7be9e7a89d [2023-11-06 22:19:57,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:19:57,929 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:19:57,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:57,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:19:57,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:19:57,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:57" (1/1) ... [2023-11-06 22:19:57,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac892cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:57, skipping insertion in model container [2023-11-06 22:19:57,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:57" (1/1) ... [2023-11-06 22:19:58,003 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:19:58,138 WARN L240 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_8988b220-a21c-4bf4-802f-88ed7996fcc0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-21.i[915,928] [2023-11-06 22:19:58,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:58,246 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:19:58,259 WARN L240 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_8988b220-a21c-4bf4-802f-88ed7996fcc0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-21.i[915,928] [2023-11-06 22:19:58,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:58,340 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:19:58,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58 WrapperNode [2023-11-06 22:19:58,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:58,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:58,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:19:58,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:19:58,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,430 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 342 [2023-11-06 22:19:58,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:58,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:19:58,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:19:58,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:19:58,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,506 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:19:58,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:19:58,514 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:19:58,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:19:58,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:58,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:58,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:19:58,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:19:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:19:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:19:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:19:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:19:58,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:19:58,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:19:58,712 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:19:58,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:19:59,535 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:19:59,557 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:19:59,558 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:19:59,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:59 BoogieIcfgContainer [2023-11-06 22:19:59,561 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:19:59,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:19:59,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:19:59,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:19:59,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:19:57" (1/3) ... [2023-11-06 22:19:59,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4531ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:59, skipping insertion in model container [2023-11-06 22:19:59,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58" (2/3) ... [2023-11-06 22:19:59,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4531ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:59, skipping insertion in model container [2023-11-06 22:19:59,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:59" (3/3) ... [2023-11-06 22:19:59,584 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-21.i [2023-11-06 22:19:59,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:19:59,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:19:59,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:19:59,683 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@389ef424, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:19:59,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:19:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 states have internal predecessors, (122), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-06 22:19:59,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-06 22:19:59,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:59,727 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:59,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:59,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1561337915, now seen corresponding path program 1 times [2023-11-06 22:19:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:59,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737382371] [2023-11-06 22:19:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:59,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:00,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:00,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737382371] [2023-11-06 22:20:00,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:20:00,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039849318] [2023-11-06 22:20:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:00,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:00,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:00,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:00,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:20:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:00,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:20:00,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-11-06 22:20:00,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:00,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039849318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:00,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:00,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:20:00,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640951024] [2023-11-06 22:20:00,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:00,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:20:00,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:20:00,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:20:00,777 INFO L87 Difference]: Start difference. First operand has 136 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 86 states have internal predecessors, (122), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2023-11-06 22:20:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:00,865 INFO L93 Difference]: Finished difference Result 265 states and 478 transitions. [2023-11-06 22:20:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:20:00,870 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2023-11-06 22:20:00,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:00,889 INFO L225 Difference]: With dead ends: 265 [2023-11-06 22:20:00,890 INFO L226 Difference]: Without dead ends: 132 [2023-11-06 22:20:00,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:20:00,910 INFO L413 NwaCegarLoop]: 211 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, 211 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 [2023-11-06 22:20:00,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:20:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-06 22:20:01,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-06 22:20:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-06 22:20:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 211 transitions. [2023-11-06 22:20:01,018 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 211 transitions. Word has length 297 [2023-11-06 22:20:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:01,019 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 211 transitions. [2023-11-06 22:20:01,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2023-11-06 22:20:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 211 transitions. [2023-11-06 22:20:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-06 22:20:01,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:01,030 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:01,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:20:01,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:20:01,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:01,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1584104123, now seen corresponding path program 1 times [2023-11-06 22:20:01,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:01,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830791190] [2023-11-06 22:20:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:01,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:01,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:01,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325694448] [2023-11-06 22:20:01,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:01,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:01,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:01,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:01,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:20:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:01,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:20:01,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 701 proven. 105 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2023-11-06 22:20:02,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 132 proven. 9 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-11-06 22:20:02,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:02,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830791190] [2023-11-06 22:20:02,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:02,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325694448] [2023-11-06 22:20:02,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325694448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:02,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:20:02,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-11-06 22:20:02,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390445350] [2023-11-06 22:20:02,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:02,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:20:02,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:02,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:20:02,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:20:02,458 INFO L87 Difference]: Start difference. First operand 132 states and 211 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2023-11-06 22:20:03,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:03,153 INFO L93 Difference]: Finished difference Result 272 states and 429 transitions. [2023-11-06 22:20:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:20:03,154 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) Word has length 297 [2023-11-06 22:20:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:03,170 INFO L225 Difference]: With dead ends: 272 [2023-11-06 22:20:03,170 INFO L226 Difference]: Without dead ends: 143 [2023-11-06 22:20:03,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:20:03,173 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 353 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:03,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 622 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:20:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-06 22:20:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2023-11-06 22:20:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 89 states have (on average 1.348314606741573) internal successors, (120), 89 states have internal predecessors, (120), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-06 22:20:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 216 transitions. [2023-11-06 22:20:03,237 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 216 transitions. Word has length 297 [2023-11-06 22:20:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:03,241 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 216 transitions. [2023-11-06 22:20:03,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2023-11-06 22:20:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 216 transitions. [2023-11-06 22:20:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-06 22:20:03,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:03,256 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:03,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:03,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:03,471 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:03,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:03,472 INFO L85 PathProgramCache]: Analyzing trace with hash -203175314, now seen corresponding path program 1 times [2023-11-06 22:20:03,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:03,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941814587] [2023-11-06 22:20:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:03,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:03,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:03,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84959534] [2023-11-06 22:20:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:03,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:03,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:03,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:03,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:20:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:03,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:20:03,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1566 proven. 54 refuted. 0 times theorem prover too weak. 2892 trivial. 0 not checked. [2023-11-06 22:20:04,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 351 proven. 63 refuted. 0 times theorem prover too weak. 4098 trivial. 0 not checked. [2023-11-06 22:20:04,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:04,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941814587] [2023-11-06 22:20:04,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:04,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84959534] [2023-11-06 22:20:04,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84959534] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:04,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:20:04,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2023-11-06 22:20:04,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101821172] [2023-11-06 22:20:04,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:04,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:20:04,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:20:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:20:04,981 INFO L87 Difference]: Start difference. First operand 141 states and 216 transitions. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 4 states have call successors, (57), 4 states have call predecessors, (57), 10 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-06 22:20:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:06,747 INFO L93 Difference]: Finished difference Result 445 states and 661 transitions. [2023-11-06 22:20:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-06 22:20:06,748 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 4 states have call successors, (57), 4 states have call predecessors, (57), 10 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 298 [2023-11-06 22:20:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:06,753 INFO L225 Difference]: With dead ends: 445 [2023-11-06 22:20:06,753 INFO L226 Difference]: Without dead ends: 307 [2023-11-06 22:20:06,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 580 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=798, Invalid=2064, Unknown=0, NotChecked=0, Total=2862 [2023-11-06 22:20:06,759 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 672 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:06,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 886 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:20:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-06 22:20:06,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 297. [2023-11-06 22:20:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 188 states have (on average 1.2925531914893618) internal successors, (243), 188 states have internal predecessors, (243), 96 states have call successors, (96), 12 states have call predecessors, (96), 12 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-06 22:20:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 435 transitions. [2023-11-06 22:20:06,889 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 435 transitions. Word has length 298 [2023-11-06 22:20:06,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:06,891 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 435 transitions. [2023-11-06 22:20:06,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 4 states have call successors, (57), 4 states have call predecessors, (57), 10 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-06 22:20:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 435 transitions. [2023-11-06 22:20:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-06 22:20:06,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:06,898 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:06,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:07,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:07,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:07,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1791523216, now seen corresponding path program 1 times [2023-11-06 22:20:07,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:07,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517487048] [2023-11-06 22:20:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:07,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:07,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:07,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965831384] [2023-11-06 22:20:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:07,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:07,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:07,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:07,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:20:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:07,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-06 22:20:07,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1376 proven. 549 refuted. 0 times theorem prover too weak. 2587 trivial. 0 not checked. [2023-11-06 22:20:12,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-06 22:20:13,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:13,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517487048] [2023-11-06 22:20:13,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:13,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965831384] [2023-11-06 22:20:13,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965831384] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:13,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:13,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [22] total 25 [2023-11-06 22:20:13,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407697738] [2023-11-06 22:20:13,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:13,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:20:13,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:20:13,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:20:13,456 INFO L87 Difference]: Start difference. First operand 297 states and 435 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-06 22:20:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:13,918 INFO L93 Difference]: Finished difference Result 707 states and 1021 transitions. [2023-11-06 22:20:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:20:13,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2023-11-06 22:20:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:13,927 INFO L225 Difference]: With dead ends: 707 [2023-11-06 22:20:13,927 INFO L226 Difference]: Without dead ends: 413 [2023-11-06 22:20:13,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:20:13,936 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 108 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:13,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 822 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:20:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-11-06 22:20:14,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 389. [2023-11-06 22:20:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 260 states have (on average 1.2961538461538462) internal successors, (337), 262 states have internal predecessors, (337), 112 states have call successors, (112), 16 states have call predecessors, (112), 16 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-06 22:20:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 561 transitions. [2023-11-06 22:20:14,040 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 561 transitions. Word has length 298 [2023-11-06 22:20:14,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:14,041 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 561 transitions. [2023-11-06 22:20:14,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-06 22:20:14,042 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 561 transitions. [2023-11-06 22:20:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-06 22:20:14,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:14,048 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:14,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:14,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:14,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:14,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1533357778, now seen corresponding path program 1 times [2023-11-06 22:20:14,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420443370] [2023-11-06 22:20:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:14,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:14,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55531929] [2023-11-06 22:20:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:14,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:14,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:14,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:14,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:20:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:14,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:20:14,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-06 22:20:14,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420443370] [2023-11-06 22:20:14,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55531929] [2023-11-06 22:20:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55531929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:14,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:14,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854452351] [2023-11-06 22:20:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:14,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:14,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:14,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:14,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:14,589 INFO L87 Difference]: Start difference. First operand 389 states and 561 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-06 22:20:14,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:14,653 INFO L93 Difference]: Finished difference Result 759 states and 1094 transitions. [2023-11-06 22:20:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:14,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2023-11-06 22:20:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:14,659 INFO L225 Difference]: With dead ends: 759 [2023-11-06 22:20:14,659 INFO L226 Difference]: Without dead ends: 373 [2023-11-06 22:20:14,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:14,661 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 13 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:14,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 397 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:20:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-06 22:20:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-11-06 22:20:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 244 states have (on average 1.2622950819672132) internal successors, (308), 246 states have internal predecessors, (308), 112 states have call successors, (112), 16 states have call predecessors, (112), 16 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-06 22:20:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 532 transitions. [2023-11-06 22:20:14,738 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 532 transitions. Word has length 298 [2023-11-06 22:20:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:14,739 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 532 transitions. [2023-11-06 22:20:14,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-06 22:20:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 532 transitions. [2023-11-06 22:20:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-06 22:20:14,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:14,746 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:14,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:20:14,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:14,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:14,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1492326830, now seen corresponding path program 1 times [2023-11-06 22:20:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:14,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713002487] [2023-11-06 22:20:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:14,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:14,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142640865] [2023-11-06 22:20:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:14,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:14,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:15,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:15,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:20:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:15,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:20:15,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-06 22:20:15,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:15,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:15,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713002487] [2023-11-06 22:20:15,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:20:15,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142640865] [2023-11-06 22:20:15,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142640865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:15,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033055510] [2023-11-06 22:20:15,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:15,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:15,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:15,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:15,272 INFO L87 Difference]: Start difference. First operand 373 states and 532 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-06 22:20:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:15,359 INFO L93 Difference]: Finished difference Result 696 states and 993 transitions. [2023-11-06 22:20:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2023-11-06 22:20:15,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:15,364 INFO L225 Difference]: With dead ends: 696 [2023-11-06 22:20:15,364 INFO L226 Difference]: Without dead ends: 326 [2023-11-06 22:20:15,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:15,366 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 15 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:15,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 386 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:20:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-06 22:20:15,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2023-11-06 22:20:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 205 states have (on average 1.2390243902439024) internal successors, (254), 206 states have internal predecessors, (254), 104 states have call successors, (104), 16 states have call predecessors, (104), 16 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-06 22:20:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 462 transitions. [2023-11-06 22:20:15,423 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 462 transitions. Word has length 298 [2023-11-06 22:20:15,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:15,424 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 462 transitions. [2023-11-06 22:20:15,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-06 22:20:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 462 transitions. [2023-11-06 22:20:15,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-11-06 22:20:15,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:15,430 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:15,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:15,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:20:15,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:15,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash -864542270, now seen corresponding path program 1 times [2023-11-06 22:20:15,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:15,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385569956] [2023-11-06 22:20:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:15,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:15,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:20:15,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035451528] [2023-11-06 22:20:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:15,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:15,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:15,680 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:15,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8988b220-a21c-4bf4-802f-88ed7996fcc0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:20:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:15,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-06 22:20:15,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1657 proven. 597 refuted. 0 times theorem prover too weak. 2258 trivial. 0 not checked. [2023-11-06 22:21:07,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:17,029 WARN L293 SmtUtils]: Spent 17.58s on a formula simplification that was a NOOP. DAG size: 811 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:22:59,386 WARN L293 SmtUtils]: Spent 13.53s on a formula simplification that was a NOOP. DAG size: 715 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:23:41,438 WARN L293 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 397 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:24:01,369 WARN L293 SmtUtils]: Spent 8.45s on a formula simplification that was a NOOP. DAG size: 396 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)