./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.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_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/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_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/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_175973db-e297-4a5a-b6cd-4eb986d362a0/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 aa3ed2bff1e00689dc57bff3bbe0e8e59870786f79090b55555fbd2dfd8e804d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:57:14,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:57:14,825 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:57:14,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:57:14,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:57:14,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:57:14,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:57:14,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:57:14,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:57:14,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:57:14,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:57:14,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:57:14,901 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:57:14,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:57:14,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:57:14,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:57:14,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:57:14,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:57:14,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:57:14,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:57:14,908 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:57:14,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:57:14,909 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:57:14,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:57:14,910 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:57:14,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:57:14,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:57:14,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:57:14,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:14,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:57:14,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:57:14,916 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:57:14,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:57:14,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:57:14,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:57:14,918 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:57:14,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:57:14,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:57:14,919 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:57:14,920 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_175973db-e297-4a5a-b6cd-4eb986d362a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa3ed2bff1e00689dc57bff3bbe0e8e59870786f79090b55555fbd2dfd8e804d [2023-11-06 22:57:15,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:57:15,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:57:15,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:57:15,307 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:57:15,307 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:57:15,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i [2023-11-06 22:57:18,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:57:18,957 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:57:18,966 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i [2023-11-06 22:57:18,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/data/b7315d0c3/80dc9aaf935841dd941b90d5aadd5ac2/FLAG1950a6d3c [2023-11-06 22:57:18,997 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/data/b7315d0c3/80dc9aaf935841dd941b90d5aadd5ac2 [2023-11-06 22:57:19,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:57:19,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:57:19,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:19,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:57:19,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:57:19,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:18" (1/1) ... [2023-11-06 22:57:19,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52171b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19, skipping insertion in model container [2023-11-06 22:57:19,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:18" (1/1) ... [2023-11-06 22:57:19,085 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:57:19,263 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_175973db-e297-4a5a-b6cd-4eb986d362a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i[916,929] [2023-11-06 22:57:19,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:19,520 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:57:19,536 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_175973db-e297-4a5a-b6cd-4eb986d362a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i[916,929] [2023-11-06 22:57:19,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:19,637 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:57:19,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19 WrapperNode [2023-11-06 22:57:19,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:19,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:19,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:57:19,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:57:19,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,764 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 454 [2023-11-06 22:57:19,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:19,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:57:19,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:57:19,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:57:19,776 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,872 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:57:19,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:57:19,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:57:19,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:57:19,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (1/1) ... [2023-11-06 22:57:19,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:19,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:19,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:57:19,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:57:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:57:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:57:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:57:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:57:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:57:19,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:57:20,109 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:57:20,111 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:57:20,977 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:57:20,987 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:57:20,987 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:57:20,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:20 BoogieIcfgContainer [2023-11-06 22:57:20,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:57:20,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:57:20,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:57:20,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:57:20,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:18" (1/3) ... [2023-11-06 22:57:20,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f88c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:20, skipping insertion in model container [2023-11-06 22:57:20,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:19" (2/3) ... [2023-11-06 22:57:20,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f88c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:20, skipping insertion in model container [2023-11-06 22:57:20,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:20" (3/3) ... [2023-11-06 22:57:20,999 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-12.i [2023-11-06 22:57:21,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:57:21,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:57:21,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:21,086 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;@72a8c4dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:21,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:57:21,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 128 states have (on average 1.5) internal successors, (192), 129 states have internal predecessors, (192), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-06 22:57:21,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-06 22:57:21,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:21,129 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:21,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:21,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:21,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1717092947, now seen corresponding path program 1 times [2023-11-06 22:57:21,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:21,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451095340] [2023-11-06 22:57:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:21,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:21,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451095340] [2023-11-06 22:57:21,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:57:21,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835215222] [2023-11-06 22:57:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:21,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:21,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:21,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:21,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:57:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:22,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:57:22,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2023-11-06 22:57:22,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:22,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835215222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:22,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:22,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:22,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470679732] [2023-11-06 22:57:22,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:22,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:57:22,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:22,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:57:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:57:22,239 INFO L87 Difference]: Start difference. First operand has 180 states, 128 states have (on average 1.5) internal successors, (192), 129 states have internal predecessors, (192), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2023-11-06 22:57:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:22,316 INFO L93 Difference]: Finished difference Result 339 states and 599 transitions. [2023-11-06 22:57:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:57:22,319 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 317 [2023-11-06 22:57:22,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:22,328 INFO L225 Difference]: With dead ends: 339 [2023-11-06 22:57:22,328 INFO L226 Difference]: Without dead ends: 162 [2023-11-06 22:57:22,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 316 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 22:57:22,337 INFO L413 NwaCegarLoop]: 257 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, 257 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 22:57:22,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-06 22:57:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-06 22:57:22,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 111 states have (on average 1.4324324324324325) internal successors, (159), 111 states have internal predecessors, (159), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-06 22:57:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 257 transitions. [2023-11-06 22:57:22,415 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 257 transitions. Word has length 317 [2023-11-06 22:57:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:22,415 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 257 transitions. [2023-11-06 22:57:22,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2023-11-06 22:57:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 257 transitions. [2023-11-06 22:57:22,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-06 22:57:22,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:22,425 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:22,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:57:22,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:57:22,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:22,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:22,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1486199099, now seen corresponding path program 1 times [2023-11-06 22:57:22,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:22,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225014554] [2023-11-06 22:57:22,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:22,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:22,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:22,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131370934] [2023-11-06 22:57:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:22,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:22,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:22,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:57:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:23,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:57:23,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2128 proven. 96 refuted. 0 times theorem prover too weak. 2480 trivial. 0 not checked. [2023-11-06 22:57:23,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2023-11-06 22:57:24,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:24,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225014554] [2023-11-06 22:57:24,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:24,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131370934] [2023-11-06 22:57:24,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131370934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:57:24,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:57:24,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-06 22:57:24,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538798730] [2023-11-06 22:57:24,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:57:24,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:24,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:57:24,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:57:24,131 INFO L87 Difference]: Start difference. First operand 162 states and 257 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-11-06 22:57:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:24,705 INFO L93 Difference]: Finished difference Result 327 states and 516 transitions. [2023-11-06 22:57:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:57:24,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 317 [2023-11-06 22:57:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:24,712 INFO L225 Difference]: With dead ends: 327 [2023-11-06 22:57:24,713 INFO L226 Difference]: Without dead ends: 168 [2023-11-06 22:57:24,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 624 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:57:24,716 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 282 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:24,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 671 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:57:24,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-06 22:57:24,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2023-11-06 22:57:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 114 states have (on average 1.412280701754386) internal successors, (161), 114 states have internal predecessors, (161), 49 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-06 22:57:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 259 transitions. [2023-11-06 22:57:24,757 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 259 transitions. Word has length 317 [2023-11-06 22:57:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:24,759 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 259 transitions. [2023-11-06 22:57:24,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2023-11-06 22:57:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 259 transitions. [2023-11-06 22:57:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-11-06 22:57:24,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:24,769 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:24,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:24,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:24,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:24,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 190506610, now seen corresponding path program 1 times [2023-11-06 22:57:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:24,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068185259] [2023-11-06 22:57:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:24,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:25,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:25,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357457929] [2023-11-06 22:57:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:25,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:25,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:25,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:25,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:57:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:25,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:57:25,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2388 proven. 66 refuted. 0 times theorem prover too weak. 2250 trivial. 0 not checked. [2023-11-06 22:57:25,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2023-11-06 22:57:26,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:26,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068185259] [2023-11-06 22:57:26,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:26,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357457929] [2023-11-06 22:57:26,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357457929] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:57:26,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:57:26,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-06 22:57:26,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632195289] [2023-11-06 22:57:26,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:26,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:57:26,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:26,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:57:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:57:26,182 INFO L87 Difference]: Start difference. First operand 166 states and 259 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 3 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 3 states have call predecessors, (72), 3 states have call successors, (72) [2023-11-06 22:57:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:26,703 INFO L93 Difference]: Finished difference Result 335 states and 520 transitions. [2023-11-06 22:57:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:57:26,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 3 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 3 states have call predecessors, (72), 3 states have call successors, (72) Word has length 318 [2023-11-06 22:57:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:26,710 INFO L225 Difference]: With dead ends: 335 [2023-11-06 22:57:26,710 INFO L226 Difference]: Without dead ends: 172 [2023-11-06 22:57:26,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:57:26,713 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 196 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:26,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 658 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:57:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-06 22:57:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2023-11-06 22:57:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 117 states have (on average 1.393162393162393) internal successors, (163), 117 states have internal predecessors, (163), 49 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-06 22:57:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 261 transitions. [2023-11-06 22:57:26,763 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 261 transitions. Word has length 318 [2023-11-06 22:57:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:26,766 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 261 transitions. [2023-11-06 22:57:26,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 3 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 3 states have call predecessors, (72), 3 states have call successors, (72) [2023-11-06 22:57:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 261 transitions. [2023-11-06 22:57:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-11-06 22:57:26,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:26,774 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:26,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:26,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:26,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:26,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1645938108, now seen corresponding path program 1 times [2023-11-06 22:57:26,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:26,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346283448] [2023-11-06 22:57:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:27,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:27,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579842776] [2023-11-06 22:57:27,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:27,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:27,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:27,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:27,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:57:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:27,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:57:27,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-11-06 22:57:27,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346283448] [2023-11-06 22:57:27,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:27,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579842776] [2023-11-06 22:57:27,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579842776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:27,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:27,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:57:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012987879] [2023-11-06 22:57:27,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:27,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:27,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:27,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:27,529 INFO L87 Difference]: Start difference. First operand 170 states and 261 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-11-06 22:57:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:27,904 INFO L93 Difference]: Finished difference Result 616 states and 951 transitions. [2023-11-06 22:57:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:57:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 319 [2023-11-06 22:57:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:27,914 INFO L225 Difference]: With dead ends: 616 [2023-11-06 22:57:27,915 INFO L226 Difference]: Without dead ends: 449 [2023-11-06 22:57:27,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:27,920 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 401 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:27,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1275 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:57:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-06 22:57:28,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 335. [2023-11-06 22:57:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 230 states have (on average 1.3782608695652174) internal successors, (317), 230 states have internal predecessors, (317), 98 states have call successors, (98), 6 states have call predecessors, (98), 6 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-06 22:57:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 513 transitions. [2023-11-06 22:57:28,040 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 513 transitions. Word has length 319 [2023-11-06 22:57:28,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:28,045 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 513 transitions. [2023-11-06 22:57:28,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-11-06 22:57:28,046 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 513 transitions. [2023-11-06 22:57:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-11-06 22:57:28,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:28,052 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:28,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 22:57:28,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:28,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:28,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash -523428098, now seen corresponding path program 1 times [2023-11-06 22:57:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:28,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768769111] [2023-11-06 22:57:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:28,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:28,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892906876] [2023-11-06 22:57:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:28,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:28,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:28,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:28,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:57:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:28,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:57:28,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-11-06 22:57:28,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:28,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:28,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768769111] [2023-11-06 22:57:28,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892906876] [2023-11-06 22:57:28,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892906876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:28,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:28,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:57:28,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794324450] [2023-11-06 22:57:28,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:28,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:57:28,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:57:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:28,949 INFO L87 Difference]: Start difference. First operand 335 states and 513 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-11-06 22:57:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:29,351 INFO L93 Difference]: Finished difference Result 775 states and 1183 transitions. [2023-11-06 22:57:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:57:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 319 [2023-11-06 22:57:29,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:29,357 INFO L225 Difference]: With dead ends: 775 [2023-11-06 22:57:29,357 INFO L226 Difference]: Without dead ends: 426 [2023-11-06 22:57:29,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:57:29,359 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 156 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:29,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1303 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:57:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-11-06 22:57:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 423. [2023-11-06 22:57:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 301 states have (on average 1.3787375415282392) internal successors, (415), 302 states have internal predecessors, (415), 114 states have call successors, (114), 7 states have call predecessors, (114), 7 states have return successors, (114), 113 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-06 22:57:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 643 transitions. [2023-11-06 22:57:29,429 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 643 transitions. Word has length 319 [2023-11-06 22:57:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:29,430 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 643 transitions. [2023-11-06 22:57:29,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-11-06 22:57:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 643 transitions. [2023-11-06 22:57:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-06 22:57:29,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:29,434 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:29,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:29,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:29,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:29,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:29,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1796128030, now seen corresponding path program 1 times [2023-11-06 22:57:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:29,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764577653] [2023-11-06 22:57:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:29,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:29,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:29,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3219016] [2023-11-06 22:57:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:29,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:29,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:29,702 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:29,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:57:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:30,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:57:30,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-11-06 22:57:31,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:57:31,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:31,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764577653] [2023-11-06 22:57:31,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:31,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3219016] [2023-11-06 22:57:31,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3219016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:31,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:31,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:57:31,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218040223] [2023-11-06 22:57:31,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:31,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:31,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:31,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:31,321 INFO L87 Difference]: Start difference. First operand 423 states and 643 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-11-06 22:57:31,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:31,745 INFO L93 Difference]: Finished difference Result 1306 states and 1986 transitions. [2023-11-06 22:57:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:57:31,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 320 [2023-11-06 22:57:31,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:31,757 INFO L225 Difference]: With dead ends: 1306 [2023-11-06 22:57:31,757 INFO L226 Difference]: Without dead ends: 886 [2023-11-06 22:57:31,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:57:31,760 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 285 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:31,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 942 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:57:31,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-11-06 22:57:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 839. [2023-11-06 22:57:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 596 states have (on average 1.3741610738255035) internal successors, (819), 598 states have internal predecessors, (819), 228 states have call successors, (228), 14 states have call predecessors, (228), 14 states have return successors, (228), 226 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-06 22:57:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1275 transitions. [2023-11-06 22:57:31,907 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1275 transitions. Word has length 320 [2023-11-06 22:57:31,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:31,908 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1275 transitions. [2023-11-06 22:57:31,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2023-11-06 22:57:31,908 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1275 transitions. [2023-11-06 22:57:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-06 22:57:31,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:31,913 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:31,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:32,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:32,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:32,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:32,122 INFO L85 PathProgramCache]: Analyzing trace with hash -241715440, now seen corresponding path program 1 times [2023-11-06 22:57:32,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:32,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026943407] [2023-11-06 22:57:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:32,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:32,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:32,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893381625] [2023-11-06 22:57:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:32,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:32,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:32,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:32,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:57:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:32,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:57:32,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 1470 proven. 117 refuted. 0 times theorem prover too weak. 3117 trivial. 0 not checked. [2023-11-06 22:57:33,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 27 proven. 117 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2023-11-06 22:57:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026943407] [2023-11-06 22:57:34,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893381625] [2023-11-06 22:57:34,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893381625] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:57:34,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:57:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-06 22:57:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324522297] [2023-11-06 22:57:34,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:57:34,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:57:34,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:34,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:57:34,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:57:34,209 INFO L87 Difference]: Start difference. First operand 839 states and 1275 transitions. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 4 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (98), 4 states have call predecessors, (98), 4 states have call successors, (98) [2023-11-06 22:57:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:35,937 INFO L93 Difference]: Finished difference Result 1722 states and 2607 transitions. [2023-11-06 22:57:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:57:35,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 4 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (98), 4 states have call predecessors, (98), 4 states have call successors, (98) Word has length 320 [2023-11-06 22:57:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:35,946 INFO L225 Difference]: With dead ends: 1722 [2023-11-06 22:57:35,946 INFO L226 Difference]: Without dead ends: 886 [2023-11-06 22:57:35,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:57:35,951 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 766 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:35,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1412 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:57:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-11-06 22:57:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 682. [2023-11-06 22:57:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 506 states have (on average 1.3992094861660078) internal successors, (708), 507 states have internal predecessors, (708), 163 states have call successors, (163), 12 states have call predecessors, (163), 12 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2023-11-06 22:57:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1034 transitions. [2023-11-06 22:57:36,122 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1034 transitions. Word has length 320 [2023-11-06 22:57:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:36,124 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1034 transitions. [2023-11-06 22:57:36,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 4 states have call successors, (98), 3 states have call predecessors, (98), 5 states have return successors, (98), 4 states have call predecessors, (98), 4 states have call successors, (98) [2023-11-06 22:57:36,125 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1034 transitions. [2023-11-06 22:57:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-11-06 22:57:36,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:36,130 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:36,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:36,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:57:36,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:36,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1418434864, now seen corresponding path program 1 times [2023-11-06 22:57:36,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:36,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696161371] [2023-11-06 22:57:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:36,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:36,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:36,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481283468] [2023-11-06 22:57:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:36,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:36,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:36,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:36,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_175973db-e297-4a5a-b6cd-4eb986d362a0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process