./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/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 e475a390090db67ea94556c3e569cedc1b507adccd423442184dd541c13b6194 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:06:33,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:06:33,382 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:06:33,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:06:33,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:06:33,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:06:33,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:06:33,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:06:33,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:06:33,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:06:33,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:06:33,450 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:06:33,451 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:06:33,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:06:33,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:06:33,453 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:06:33,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:06:33,454 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:06:33,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:06:33,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:06:33,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:06:33,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:06:33,457 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:06:33,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:06:33,458 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:06:33,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:06:33,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:06:33,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:06:33,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:33,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:06:33,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:06:33,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:06:33,463 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:06:33,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:06:33,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:06:33,464 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:06:33,464 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:06:33,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:06:33,464 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:06:33,465 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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e475a390090db67ea94556c3e569cedc1b507adccd423442184dd541c13b6194 [2023-11-06 23:06:33,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:06:33,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:06:33,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:06:33,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:06:33,872 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:06:33,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i [2023-11-06 23:06:37,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:06:37,456 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:06:37,464 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i [2023-11-06 23:06:37,487 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/data/ef87e33fa/a6458d92acd141ffb60f454d16bc11e5/FLAG0850e617b [2023-11-06 23:06:37,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/data/ef87e33fa/a6458d92acd141ffb60f454d16bc11e5 [2023-11-06 23:06:37,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:06:37,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:06:37,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:37,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:06:37,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:06:37,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:37" (1/1) ... [2023-11-06 23:06:37,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e1aeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:37, skipping insertion in model container [2023-11-06 23:06:37,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:37" (1/1) ... [2023-11-06 23:06:37,575 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:37,787 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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i[916,929] [2023-11-06 23:06:38,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:38,096 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:06:38,120 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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i[916,929] [2023-11-06 23:06:38,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:38,284 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:06:38,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38 WrapperNode [2023-11-06 23:06:38,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:38,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:38,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:06:38,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:06:38,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,431 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 473 [2023-11-06 23:06:38,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:38,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:06:38,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:06:38,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:06:38,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:06:38,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:06:38,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:06:38,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:06:38,583 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:38,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:38,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:06:38,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:06:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:06:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:06:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:06:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:06:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:06:38,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:06:38,825 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:06:38,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:06:39,962 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:06:39,971 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:06:39,971 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:06:39,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:39 BoogieIcfgContainer [2023-11-06 23:06:39,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:06:39,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:06:39,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:06:39,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:06:39,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:06:37" (1/3) ... [2023-11-06 23:06:39,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771ca50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:39, skipping insertion in model container [2023-11-06 23:06:39,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (2/3) ... [2023-11-06 23:06:39,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771ca50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:39, skipping insertion in model container [2023-11-06 23:06:39,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:39" (3/3) ... [2023-11-06 23:06:39,983 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-70.i [2023-11-06 23:06:40,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:06:40,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:06:40,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:06:40,093 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;@aaf9162, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:06:40,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:06:40,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 138 states have (on average 1.5724637681159421) internal successors, (217), 139 states have internal predecessors, (217), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 23:06:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 23:06:40,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:40,122 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:40,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:40,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2066290716, now seen corresponding path program 1 times [2023-11-06 23:06:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:40,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497943407] [2023-11-06 23:06:40,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:40,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:40,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497943407] [2023-11-06 23:06:40,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 23:06:40,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134183355] [2023-11-06 23:06:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:40,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:40,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:40,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:40,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:06:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:40,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 23:06:40,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-11-06 23:06:41,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134183355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:41,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:41,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:06:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752751283] [2023-11-06 23:06:41,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:41,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:06:41,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:06:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:06:41,119 INFO L87 Difference]: Start difference. First operand has 176 states, 138 states have (on average 1.5724637681159421) internal successors, (217), 139 states have internal predecessors, (217), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) 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, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-06 23:06:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:41,181 INFO L93 Difference]: Finished difference Result 345 states and 603 transitions. [2023-11-06 23:06:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:06:41,184 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, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 247 [2023-11-06 23:06:41,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:41,194 INFO L225 Difference]: With dead ends: 345 [2023-11-06 23:06:41,194 INFO L226 Difference]: Without dead ends: 172 [2023-11-06 23:06:41,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 246 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 23:06:41,204 INFO L413 NwaCegarLoop]: 280 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, 280 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 23:06:41,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:06:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-06 23:06:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-06 23:06:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 135 states have (on average 1.5555555555555556) internal successors, (210), 135 states have internal predecessors, (210), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 23:06:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 280 transitions. [2023-11-06 23:06:41,285 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 280 transitions. Word has length 247 [2023-11-06 23:06:41,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:41,286 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 280 transitions. [2023-11-06 23:06:41,286 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, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2023-11-06 23:06:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 280 transitions. [2023-11-06 23:06:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 23:06:41,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:41,294 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:41,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:41,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:41,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:41,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:41,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1395783266, now seen corresponding path program 1 times [2023-11-06 23:06:41,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:41,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207234362] [2023-11-06 23:06:41,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:41,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:41,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:41,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87585119] [2023-11-06 23:06:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:41,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:41,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:41,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:41,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:06:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:42,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:06:42,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:06:42,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:42,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207234362] [2023-11-06 23:06:42,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87585119] [2023-11-06 23:06:42,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87585119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:42,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:42,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:42,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432737032] [2023-11-06 23:06:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:42,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:06:42,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:06:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:42,599 INFO L87 Difference]: Start difference. First operand 172 states and 280 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:42,884 INFO L93 Difference]: Finished difference Result 511 states and 835 transitions. [2023-11-06 23:06:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:06:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 247 [2023-11-06 23:06:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:42,897 INFO L225 Difference]: With dead ends: 511 [2023-11-06 23:06:42,897 INFO L226 Difference]: Without dead ends: 342 [2023-11-06 23:06:42,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:06:42,904 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 270 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:42,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 799 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:06:42,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-06 23:06:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 288. [2023-11-06 23:06:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 215 states have (on average 1.544186046511628) internal successors, (332), 215 states have internal predecessors, (332), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-06 23:06:43,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 472 transitions. [2023-11-06 23:06:43,013 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 472 transitions. Word has length 247 [2023-11-06 23:06:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:43,017 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 472 transitions. [2023-11-06 23:06:43,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:43,019 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 472 transitions. [2023-11-06 23:06:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 23:06:43,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:43,029 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:43,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 23:06:43,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 23:06:43,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:43,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:43,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1982589280, now seen corresponding path program 1 times [2023-11-06 23:06:43,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:43,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799879419] [2023-11-06 23:06:43,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:43,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:43,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:43,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425621917] [2023-11-06 23:06:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:43,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:43,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:43,327 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:43,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:06:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:43,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:06:43,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:06:43,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:43,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:43,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799879419] [2023-11-06 23:06:43,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:43,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425621917] [2023-11-06 23:06:43,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425621917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:43,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:43,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:43,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690517623] [2023-11-06 23:06:43,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:43,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:43,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:43,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:43,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:43,718 INFO L87 Difference]: Start difference. First operand 288 states and 472 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:43,782 INFO L93 Difference]: Finished difference Result 688 states and 1135 transitions. [2023-11-06 23:06:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:43,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 247 [2023-11-06 23:06:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:43,797 INFO L225 Difference]: With dead ends: 688 [2023-11-06 23:06:43,797 INFO L226 Difference]: Without dead ends: 492 [2023-11-06 23:06:43,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:43,802 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 231 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:43,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 543 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:06:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-11-06 23:06:43,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 489. [2023-11-06 23:06:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 390 states have (on average 1.5846153846153845) internal successors, (618), 391 states have internal predecessors, (618), 94 states have call successors, (94), 4 states have call predecessors, (94), 4 states have return successors, (94), 93 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-06 23:06:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 806 transitions. [2023-11-06 23:06:43,875 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 806 transitions. Word has length 247 [2023-11-06 23:06:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:43,877 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 806 transitions. [2023-11-06 23:06:43,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 806 transitions. [2023-11-06 23:06:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 23:06:43,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:43,884 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:43,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:44,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:44,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:44,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1959957026, now seen corresponding path program 1 times [2023-11-06 23:06:44,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:44,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67156484] [2023-11-06 23:06:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:44,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:44,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:44,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782762640] [2023-11-06 23:06:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:44,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:44,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:44,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:44,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:06:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:44,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:06:44,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:06:44,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67156484] [2023-11-06 23:06:44,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:44,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782762640] [2023-11-06 23:06:44,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782762640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:44,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:44,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:44,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004022697] [2023-11-06 23:06:44,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:44,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:44,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:44,523 INFO L87 Difference]: Start difference. First operand 489 states and 806 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:44,624 INFO L93 Difference]: Finished difference Result 1128 states and 1855 transitions. [2023-11-06 23:06:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 247 [2023-11-06 23:06:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:44,633 INFO L225 Difference]: With dead ends: 1128 [2023-11-06 23:06:44,634 INFO L226 Difference]: Without dead ends: 777 [2023-11-06 23:06:44,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:44,640 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 211 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:44,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 634 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:06:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-11-06 23:06:44,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 541. [2023-11-06 23:06:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 442 states have (on average 1.588235294117647) internal successors, (702), 443 states have internal predecessors, (702), 94 states have call successors, (94), 4 states have call predecessors, (94), 4 states have return successors, (94), 93 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-06 23:06:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 890 transitions. [2023-11-06 23:06:44,718 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 890 transitions. Word has length 247 [2023-11-06 23:06:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:44,719 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 890 transitions. [2023-11-06 23:06:44,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 890 transitions. [2023-11-06 23:06:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 23:06:44,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:44,725 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:44,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 23:06:44,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:44,932 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:44,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash 529571936, now seen corresponding path program 1 times [2023-11-06 23:06:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:44,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68414261] [2023-11-06 23:06:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:44,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:45,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:45,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720475454] [2023-11-06 23:06:45,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:45,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:45,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:45,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:45,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:06:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:45,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:06:45,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:06:45,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:45,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:45,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68414261] [2023-11-06 23:06:45,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:45,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720475454] [2023-11-06 23:06:45,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720475454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:45,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:45,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389677777] [2023-11-06 23:06:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:45,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:45,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:45,404 INFO L87 Difference]: Start difference. First operand 541 states and 890 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:45,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:45,501 INFO L93 Difference]: Finished difference Result 1229 states and 2009 transitions. [2023-11-06 23:06:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:45,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 247 [2023-11-06 23:06:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:45,509 INFO L225 Difference]: With dead ends: 1229 [2023-11-06 23:06:45,509 INFO L226 Difference]: Without dead ends: 854 [2023-11-06 23:06:45,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:45,512 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 221 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:45,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 551 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:06:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-11-06 23:06:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 717. [2023-11-06 23:06:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 618 states have (on average 1.5825242718446602) internal successors, (978), 619 states have internal predecessors, (978), 94 states have call successors, (94), 4 states have call predecessors, (94), 4 states have return successors, (94), 93 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-06 23:06:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1166 transitions. [2023-11-06 23:06:45,576 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1166 transitions. Word has length 247 [2023-11-06 23:06:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:45,577 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1166 transitions. [2023-11-06 23:06:45,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1166 transitions. [2023-11-06 23:06:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 23:06:45,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:45,583 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:45,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:45,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:45,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:45,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:45,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1231171810, now seen corresponding path program 1 times [2023-11-06 23:06:45,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:45,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63223835] [2023-11-06 23:06:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:45,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:45,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:45,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540113387] [2023-11-06 23:06:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:45,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:45,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:45,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:45,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:06:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:46,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:06:46,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:06:46,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63223835] [2023-11-06 23:06:46,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540113387] [2023-11-06 23:06:46,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540113387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:46,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:46,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:46,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113137141] [2023-11-06 23:06:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:46,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:46,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:46,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:46,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:46,210 INFO L87 Difference]: Start difference. First operand 717 states and 1166 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:46,321 INFO L93 Difference]: Finished difference Result 1863 states and 3034 transitions. [2023-11-06 23:06:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 247 [2023-11-06 23:06:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:46,332 INFO L225 Difference]: With dead ends: 1863 [2023-11-06 23:06:46,332 INFO L226 Difference]: Without dead ends: 1308 [2023-11-06 23:06:46,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:46,335 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 251 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:46,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 753 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:06:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2023-11-06 23:06:46,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1055. [2023-11-06 23:06:46,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 956 states have (on average 1.5774058577405858) internal successors, (1508), 957 states have internal predecessors, (1508), 94 states have call successors, (94), 4 states have call predecessors, (94), 4 states have return successors, (94), 93 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-06 23:06:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1696 transitions. [2023-11-06 23:06:46,415 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1696 transitions. Word has length 247 [2023-11-06 23:06:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:46,416 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1696 transitions. [2023-11-06 23:06:46,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1696 transitions. [2023-11-06 23:06:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-06 23:06:46,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:46,422 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:46,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:46,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:46,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:46,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:46,631 INFO L85 PathProgramCache]: Analyzing trace with hash 688282974, now seen corresponding path program 1 times [2023-11-06 23:06:46,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:46,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816436733] [2023-11-06 23:06:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:46,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:46,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:46,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122479159] [2023-11-06 23:06:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:46,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:46,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:46,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:46,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:06:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:47,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:06:47,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 168 proven. 99 refuted. 0 times theorem prover too weak. 2113 trivial. 0 not checked. [2023-11-06 23:06:47,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:06:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 3 proven. 99 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2023-11-06 23:06:47,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:47,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816436733] [2023-11-06 23:06:47,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:47,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122479159] [2023-11-06 23:06:47,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122479159] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:06:47,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:06:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 23:06:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813681919] [2023-11-06 23:06:47,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:06:47,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:06:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:06:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:06:47,700 INFO L87 Difference]: Start difference. First operand 1055 states and 1696 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 3 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2023-11-06 23:06:48,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:48,083 INFO L93 Difference]: Finished difference Result 2052 states and 3292 transitions. [2023-11-06 23:06:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:06:48,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 3 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 247 [2023-11-06 23:06:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:48,094 INFO L225 Difference]: With dead ends: 2052 [2023-11-06 23:06:48,095 INFO L226 Difference]: Without dead ends: 1075 [2023-11-06 23:06:48,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:06:48,099 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 358 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:48,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 595 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:06:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2023-11-06 23:06:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1067. [2023-11-06 23:06:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 965 states have (on average 1.555440414507772) internal successors, (1501), 966 states have internal predecessors, (1501), 94 states have call successors, (94), 7 states have call predecessors, (94), 7 states have return successors, (94), 93 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-06 23:06:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1689 transitions. [2023-11-06 23:06:48,171 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1689 transitions. Word has length 247 [2023-11-06 23:06:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:48,171 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1689 transitions. [2023-11-06 23:06:48,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 3 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2023-11-06 23:06:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1689 transitions. [2023-11-06 23:06:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-06 23:06:48,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:48,178 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:48,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:48,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:48,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:48,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:48,388 INFO L85 PathProgramCache]: Analyzing trace with hash -195580106, now seen corresponding path program 1 times [2023-11-06 23:06:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055182340] [2023-11-06 23:06:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:48,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:48,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:48,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287514668] [2023-11-06 23:06:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:48,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:48,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:48,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:48,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:06:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:48,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:06:48,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:06:49,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:49,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:49,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055182340] [2023-11-06 23:06:49,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:49,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287514668] [2023-11-06 23:06:49,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287514668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:49,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:49,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:06:49,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660282908] [2023-11-06 23:06:49,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:49,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:06:49,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:49,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:06:49,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:06:49,228 INFO L87 Difference]: Start difference. First operand 1067 states and 1689 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:50,146 INFO L93 Difference]: Finished difference Result 4387 states and 6895 transitions. [2023-11-06 23:06:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:06:50,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 248 [2023-11-06 23:06:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:50,174 INFO L225 Difference]: With dead ends: 4387 [2023-11-06 23:06:50,174 INFO L226 Difference]: Without dead ends: 3612 [2023-11-06 23:06:50,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:06:50,179 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1760 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:50,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 1583 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 23:06:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2023-11-06 23:06:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 3012. [2023-11-06 23:06:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2721 states have (on average 1.5483278206541713) internal successors, (4213), 2725 states have internal predecessors, (4213), 271 states have call successors, (271), 19 states have call predecessors, (271), 19 states have return successors, (271), 267 states have call predecessors, (271), 271 states have call successors, (271) [2023-11-06 23:06:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 4755 transitions. [2023-11-06 23:06:50,430 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 4755 transitions. Word has length 248 [2023-11-06 23:06:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:50,431 INFO L495 AbstractCegarLoop]: Abstraction has 3012 states and 4755 transitions. [2023-11-06 23:06:50,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 4755 transitions. [2023-11-06 23:06:50,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-06 23:06:50,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:50,438 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:50,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:50,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:50,646 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:50,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash -133540492, now seen corresponding path program 1 times [2023-11-06 23:06:50,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:50,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229264366] [2023-11-06 23:06:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:50,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:50,717 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:50,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170426356] [2023-11-06 23:06:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:50,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:50,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:50,724 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:50,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:06:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:51,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:06:51,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:06:52,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:52,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:52,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229264366] [2023-11-06 23:06:52,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:52,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170426356] [2023-11-06 23:06:52,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170426356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:52,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:52,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:06:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362498670] [2023-11-06 23:06:52,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:52,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:06:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:52,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:06:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:06:52,133 INFO L87 Difference]: Start difference. First operand 3012 states and 4755 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:53,213 INFO L93 Difference]: Finished difference Result 9014 states and 14238 transitions. [2023-11-06 23:06:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:06:53,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 248 [2023-11-06 23:06:53,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:53,253 INFO L225 Difference]: With dead ends: 9014 [2023-11-06 23:06:53,254 INFO L226 Difference]: Without dead ends: 6124 [2023-11-06 23:06:53,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:06:53,262 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 435 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:53,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1091 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 23:06:53,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2023-11-06 23:06:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 5016. [2023-11-06 23:06:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5016 states, 4473 states have (on average 1.5454951933825174) internal successors, (6913), 4481 states have internal predecessors, (6913), 507 states have call successors, (507), 35 states have call predecessors, (507), 35 states have return successors, (507), 499 states have call predecessors, (507), 507 states have call successors, (507) [2023-11-06 23:06:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5016 states to 5016 states and 7927 transitions. [2023-11-06 23:06:53,687 INFO L78 Accepts]: Start accepts. Automaton has 5016 states and 7927 transitions. Word has length 248 [2023-11-06 23:06:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:53,688 INFO L495 AbstractCegarLoop]: Abstraction has 5016 states and 7927 transitions. [2023-11-06 23:06:53,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5016 states and 7927 transitions. [2023-11-06 23:06:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-06 23:06:53,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:53,694 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:53,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:53,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 23:06:53,902 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:53,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:53,903 INFO L85 PathProgramCache]: Analyzing trace with hash -205927050, now seen corresponding path program 1 times [2023-11-06 23:06:53,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:53,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257428534] [2023-11-06 23:06:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:53,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:53,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:53,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386516657] [2023-11-06 23:06:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:53,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:53,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:53,956 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:53,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:06:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:54,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:06:54,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:06:54,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:54,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:54,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257428534] [2023-11-06 23:06:54,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:54,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386516657] [2023-11-06 23:06:54,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386516657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:54,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:54,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589314901] [2023-11-06 23:06:54,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:54,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:06:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:54,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:06:54,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:54,663 INFO L87 Difference]: Start difference. First operand 5016 states and 7927 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:55,411 INFO L93 Difference]: Finished difference Result 12979 states and 20565 transitions. [2023-11-06 23:06:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:06:55,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 248 [2023-11-06 23:06:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:55,462 INFO L225 Difference]: With dead ends: 12979 [2023-11-06 23:06:55,462 INFO L226 Difference]: Without dead ends: 8038 [2023-11-06 23:06:55,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:06:55,475 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 623 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:55,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 887 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:06:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8038 states. [2023-11-06 23:06:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8038 to 5424. [2023-11-06 23:06:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 4755 states have (on average 1.502839116719243) internal successors, (7146), 4765 states have internal predecessors, (7146), 625 states have call successors, (625), 43 states have call predecessors, (625), 43 states have return successors, (625), 615 states have call predecessors, (625), 625 states have call successors, (625) [2023-11-06 23:06:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8396 transitions. [2023-11-06 23:06:56,080 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8396 transitions. Word has length 248 [2023-11-06 23:06:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:56,081 INFO L495 AbstractCegarLoop]: Abstraction has 5424 states and 8396 transitions. [2023-11-06 23:06:56,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8396 transitions. [2023-11-06 23:06:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-06 23:06:56,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:56,087 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:06:56,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 23:06:56,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:56,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:56,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1722345652, now seen corresponding path program 1 times [2023-11-06 23:06:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:56,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946286478] [2023-11-06 23:06:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:56,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:56,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:56,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509684272] [2023-11-06 23:06:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:56,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:56,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:56,356 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:56,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:06:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:56,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:06:56,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:06:57,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:57,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:57,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946286478] [2023-11-06 23:06:57,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:57,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509684272] [2023-11-06 23:06:57,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509684272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:57,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:57,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:06:57,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751402750] [2023-11-06 23:06:57,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:57,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:06:57,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:57,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:06:57,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:06:57,599 INFO L87 Difference]: Start difference. First operand 5424 states and 8396 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:06:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:58,974 INFO L93 Difference]: Finished difference Result 19042 states and 29554 transitions. [2023-11-06 23:06:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:06:58,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 248 [2023-11-06 23:06:58,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:59,030 INFO L225 Difference]: With dead ends: 19042 [2023-11-06 23:06:59,030 INFO L226 Difference]: Without dead ends: 13708 [2023-11-06 23:06:59,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:06:59,046 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 958 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:59,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1192 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:06:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13708 states. [2023-11-06 23:07:00,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13708 to 12994. [2023-11-06 23:07:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12994 states, 11315 states have (on average 1.4886433937251435) internal successors, (16844), 11345 states have internal predecessors, (16844), 1565 states have call successors, (1565), 113 states have call predecessors, (1565), 113 states have return successors, (1565), 1535 states have call predecessors, (1565), 1565 states have call successors, (1565) [2023-11-06 23:07:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12994 states to 12994 states and 19974 transitions. [2023-11-06 23:07:00,321 INFO L78 Accepts]: Start accepts. Automaton has 12994 states and 19974 transitions. Word has length 248 [2023-11-06 23:07:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:00,322 INFO L495 AbstractCegarLoop]: Abstraction has 12994 states and 19974 transitions. [2023-11-06 23:07:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:07:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 12994 states and 19974 transitions. [2023-11-06 23:07:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-06 23:07:00,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:00,326 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:00,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:00,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 23:07:00,535 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:00,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1593036116, now seen corresponding path program 1 times [2023-11-06 23:07:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:00,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587846419] [2023-11-06 23:07:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:00,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:00,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:00,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966592740] [2023-11-06 23:07:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:00,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:00,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:00,601 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:00,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:07:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:01,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 23:07:01,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:06,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587846419] [2023-11-06 23:07:06,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:07:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966592740] [2023-11-06 23:07:06,472 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-06 23:07:06,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2023-11-06 23:07:06,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:06,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 23:07:06,673 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:935) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:774) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:362) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:311) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2023-11-06 23:07:06,686 INFO L158 Benchmark]: Toolchain (without parser) took 29180.01ms. Allocated memory was 182.5MB in the beginning and 509.6MB in the end (delta: 327.2MB). Free memory was 135.1MB in the beginning and 393.2MB in the end (delta: -258.0MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2023-11-06 23:07:06,687 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 182.5MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:07:06,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 777.03ms. Allocated memory is still 182.5MB. Free memory was 135.1MB in the beginning and 109.6MB in the end (delta: 25.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-06 23:07:06,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 145.60ms. Allocated memory is still 182.5MB. Free memory was 109.6MB in the beginning and 97.4MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:07:06,688 INFO L158 Benchmark]: Boogie Preprocessor took 148.28ms. Allocated memory is still 182.5MB. Free memory was 97.4MB in the beginning and 92.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 23:07:06,688 INFO L158 Benchmark]: RCFGBuilder took 1392.14ms. Allocated memory is still 182.5MB. Free memory was 92.2MB in the beginning and 92.2MB in the end (delta: 21.2kB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-06 23:07:06,689 INFO L158 Benchmark]: TraceAbstraction took 26709.28ms. Allocated memory was 182.5MB in the beginning and 509.6MB in the end (delta: 327.2MB). Free memory was 91.7MB in the beginning and 393.2MB in the end (delta: -301.4MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2023-11-06 23:07:06,691 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 182.5MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 777.03ms. Allocated memory is still 182.5MB. Free memory was 135.1MB in the beginning and 109.6MB in the end (delta: 25.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 145.60ms. Allocated memory is still 182.5MB. Free memory was 109.6MB in the beginning and 97.4MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 148.28ms. Allocated memory is still 182.5MB. Free memory was 97.4MB in the beginning and 92.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1392.14ms. Allocated memory is still 182.5MB. Free memory was 92.2MB in the beginning and 92.2MB in the end (delta: 21.2kB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * TraceAbstraction took 26709.28ms. Allocated memory was 182.5MB in the beginning and 509.6MB in the end (delta: 327.2MB). Free memory was 91.7MB in the beginning and 393.2MB in the end (delta: -301.4MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/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 e475a390090db67ea94556c3e569cedc1b507adccd423442184dd541c13b6194 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:09,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:09,504 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 23:07:09,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:09,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:09,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:09,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:09,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:09,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:09,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:09,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:09,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:09,574 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:09,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:09,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:09,577 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:09,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:09,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:09,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:09,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:09,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:09,581 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:07:09,582 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 23:07:09,582 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 23:07:09,583 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:09,583 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:09,584 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:09,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:09,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:09,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:09,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:09,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:09,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:09,587 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:09,588 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 23:07:09,588 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 23:07:09,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:09,588 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:09,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:09,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:09,590 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 23:07:09,591 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:09,591 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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e475a390090db67ea94556c3e569cedc1b507adccd423442184dd541c13b6194 [2023-11-06 23:07:10,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:10,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:10,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:10,124 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:10,125 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:10,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i [2023-11-06 23:07:13,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:13,737 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:13,748 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i [2023-11-06 23:07:13,767 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/data/080451c61/46dc2b6a7e864af4b4a377867ec48ace/FLAG526b56fb4 [2023-11-06 23:07:13,780 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/data/080451c61/46dc2b6a7e864af4b4a377867ec48ace [2023-11-06 23:07:13,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:13,785 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:13,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:13,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:13,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:13,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:13" (1/1) ... [2023-11-06 23:07:13,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f4ec17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:13, skipping insertion in model container [2023-11-06 23:07:13,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:13" (1/1) ... [2023-11-06 23:07:13,863 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:14,033 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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i[916,929] [2023-11-06 23:07:14,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:14,306 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:14,321 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_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-70.i[916,929] [2023-11-06 23:07:14,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:14,455 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:14,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14 WrapperNode [2023-11-06 23:07:14,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:14,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:14,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:14,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:14,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,568 INFO L138 Inliner]: procedures = 27, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 328 [2023-11-06 23:07:14,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:14,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:14,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:14,570 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:14,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,656 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:14,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:14,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:14,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:14,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (1/1) ... [2023-11-06 23:07:14,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:14,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:14,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:14,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 23:07:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:07:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:07:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:14,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:14,943 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:14,945 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:32,553 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:32,563 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:32,564 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:07:32,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:32 BoogieIcfgContainer [2023-11-06 23:07:32,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:32,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:32,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:32,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:32,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:13" (1/3) ... [2023-11-06 23:07:32,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa48d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:32, skipping insertion in model container [2023-11-06 23:07:32,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14" (2/3) ... [2023-11-06 23:07:32,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa48d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:32, skipping insertion in model container [2023-11-06 23:07:32,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:32" (3/3) ... [2023-11-06 23:07:32,584 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-70.i [2023-11-06 23:07:32,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:32,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:07:32,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:32,706 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;@3610290, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:32,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:07:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 92 states have (on average 1.5326086956521738) internal successors, (141), 93 states have internal predecessors, (141), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 23:07:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-06 23:07:32,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:32,778 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:32,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:32,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:32,790 INFO L85 PathProgramCache]: Analyzing trace with hash 187069376, now seen corresponding path program 1 times [2023-11-06 23:07:32,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:32,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122130375] [2023-11-06 23:07:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:32,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:32,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:32,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:07:32,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 23:07:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 23:07:35,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2023-11-06 23:07:35,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:35,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:35,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122130375] [2023-11-06 23:07:35,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122130375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:35,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:35,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:35,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004536587] [2023-11-06 23:07:35,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:35,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:35,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:35,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:35,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:35,427 INFO L87 Difference]: Start difference. First operand has 130 states, 92 states have (on average 1.5326086956521738) internal successors, (141), 93 states have internal predecessors, (141), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:07:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:35,474 INFO L93 Difference]: Finished difference Result 253 states and 451 transitions. [2023-11-06 23:07:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:35,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) Word has length 239 [2023-11-06 23:07:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:35,485 INFO L225 Difference]: With dead ends: 253 [2023-11-06 23:07:35,486 INFO L226 Difference]: Without dead ends: 126 [2023-11-06 23:07:35,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 238 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 23:07:35,495 INFO L413 NwaCegarLoop]: 204 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, 204 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 23:07:35,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-06 23:07:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-11-06 23:07:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 89 states have (on average 1.5056179775280898) internal successors, (134), 89 states have internal predecessors, (134), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 23:07:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 204 transitions. [2023-11-06 23:07:35,575 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 204 transitions. Word has length 239 [2023-11-06 23:07:35,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:35,576 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 204 transitions. [2023-11-06 23:07:35,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:07:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 204 transitions. [2023-11-06 23:07:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-06 23:07:35,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:35,585 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:35,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:35,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:35,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:35,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:35,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1861226630, now seen corresponding path program 1 times [2023-11-06 23:07:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:35,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422458900] [2023-11-06 23:07:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:35,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:35,814 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:07:35,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 23:07:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:38,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:07:38,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-06 23:07:43,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:43,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:43,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422458900] [2023-11-06 23:07:43,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422458900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:43,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:43,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874755575] [2023-11-06 23:07:43,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:43,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:43,430 INFO L87 Difference]: Start difference. First operand 126 states and 204 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-11-06 23:07:48,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:48,738 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 193 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:48,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 267 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 23:07:48,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:48,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:48,948 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 5 at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.undoMap(ScopedHashMap.java:97) at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.endScope(ScopedHashMap.java:127) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:101) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-06 23:07:48,953 INFO L158 Benchmark]: Toolchain (without parser) took 35167.32ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 52.6MB in the beginning and 48.9MB in the end (delta: 3.7MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2023-11-06 23:07:48,953 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 53.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:07:48,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.37ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 52.4MB in the beginning and 69.3MB in the end (delta: -16.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-11-06 23:07:48,955 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.74ms. Allocated memory is still 100.7MB. Free memory was 69.3MB in the beginning and 64.6MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 23:07:48,955 INFO L158 Benchmark]: Boogie Preprocessor took 122.89ms. Allocated memory is still 100.7MB. Free memory was 64.6MB in the beginning and 60.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:07:48,956 INFO L158 Benchmark]: RCFGBuilder took 17874.38ms. Allocated memory is still 100.7MB. Free memory was 60.4MB in the beginning and 51.0MB in the end (delta: 9.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-11-06 23:07:48,957 INFO L158 Benchmark]: TraceAbstraction took 16381.81ms. Allocated memory is still 100.7MB. Free memory was 50.3MB in the beginning and 48.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2023-11-06 23:07:48,968 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 53.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 669.37ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 52.4MB in the beginning and 69.3MB in the end (delta: -16.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.74ms. Allocated memory is still 100.7MB. Free memory was 69.3MB in the beginning and 64.6MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 122.89ms. Allocated memory is still 100.7MB. Free memory was 64.6MB in the beginning and 60.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 17874.38ms. Allocated memory is still 100.7MB. Free memory was 60.4MB in the beginning and 51.0MB in the end (delta: 9.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * TraceAbstraction took 16381.81ms. Allocated memory is still 100.7MB. Free memory was 50.3MB in the beginning and 48.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 5 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 5: de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.undoMap(ScopedHashMap.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-06 23:07:49,215 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-11-06 23:07:49,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a99c81d8-b9c5-4682-82d3-005e09e2b1ac/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 1 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 5