./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_two_index_04.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_two_index_04.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 707ac1569fc13aaf70722a6e3f0da30ae8a39e673c650cb4b45c765a74a9f24d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:27:36,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:27:36,399 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:27:36,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:27:36,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:27:36,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:27:36,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:27:36,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:27:36,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:27:36,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:27:36,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:27:36,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:27:36,437 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:27:36,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:27:36,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:27:36,439 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:27:36,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:27:36,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:27:36,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:27:36,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:27:36,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:27:36,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:27:36,443 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:27:36,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:27:36,445 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:27:36,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:27:36,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:27:36,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:27:36,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:36,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:27:36,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:27:36,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:27:36,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:27:36,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:27:36,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:27:36,451 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:27:36,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:27:36,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:27:36,467 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:27:36,468 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_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 707ac1569fc13aaf70722a6e3f0da30ae8a39e673c650cb4b45c765a74a9f24d [2023-11-12 02:27:36,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:27:36,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:27:36,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:27:36,744 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:27:36,744 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:27:36,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/array-examples/standard_two_index_04.i [2023-11-12 02:27:39,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:27:40,103 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:27:40,104 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/sv-benchmarks/c/array-examples/standard_two_index_04.i [2023-11-12 02:27:40,112 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/data/36a6c251f/d53dfe09fee441d0b16d56fadf885138/FLAGdc4d919be [2023-11-12 02:27:40,126 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/data/36a6c251f/d53dfe09fee441d0b16d56fadf885138 [2023-11-12 02:27:40,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:27:40,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:27:40,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:40,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:27:40,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:27:40,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f92b6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40, skipping insertion in model container [2023-11-12 02:27:40,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:27:40,321 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_0e1dcec7-2765-404e-a20c-fafdb6f48c54/sv-benchmarks/c/array-examples/standard_two_index_04.i[814,827] [2023-11-12 02:27:40,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:40,347 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:27:40,361 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_0e1dcec7-2765-404e-a20c-fafdb6f48c54/sv-benchmarks/c/array-examples/standard_two_index_04.i[814,827] [2023-11-12 02:27:40,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:40,385 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:27:40,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40 WrapperNode [2023-11-12 02:27:40,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:40,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:40,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:27:40,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:27:40,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,424 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2023-11-12 02:27:40,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:40,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:27:40,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:27:40,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:27:40,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:27:40,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:27:40,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:27:40,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:27:40,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (1/1) ... [2023-11-12 02:27:40,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:40,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:40,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:27:40,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:27:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:27:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:27:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:27:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:27:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:27:40,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:27:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:27:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:27:40,631 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:27:40,634 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:27:40,792 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:27:40,798 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:27:40,798 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:27:40,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:40 BoogieIcfgContainer [2023-11-12 02:27:40,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:27:40,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:27:40,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:27:40,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:27:40,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:27:40" (1/3) ... [2023-11-12 02:27:40,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1516e029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:40, skipping insertion in model container [2023-11-12 02:27:40,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:40" (2/3) ... [2023-11-12 02:27:40,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1516e029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:40, skipping insertion in model container [2023-11-12 02:27:40,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:40" (3/3) ... [2023-11-12 02:27:40,809 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_two_index_04.i [2023-11-12 02:27:40,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:27:40,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:27:40,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:27:40,915 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53cfffd0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:27:40,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:27:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 02:27:40,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:40,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:40,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:40,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:40,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1157635880, now seen corresponding path program 1 times [2023-11-12 02:27:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:40,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025581194] [2023-11-12 02:27:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:40,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:41,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:41,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025581194] [2023-11-12 02:27:41,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025581194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:41,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:41,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:27:41,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978792150] [2023-11-12 02:27:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:41,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:27:41,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:27:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:27:41,301 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:41,340 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2023-11-12 02:27:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:27:41,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 02:27:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:41,351 INFO L225 Difference]: With dead ends: 28 [2023-11-12 02:27:41,351 INFO L226 Difference]: Without dead ends: 12 [2023-11-12 02:27:41,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:27:41,358 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:41,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:27:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-12 02:27:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-12 02:27:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-12 02:27:41,392 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2023-11-12 02:27:41,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:41,393 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-12 02:27:41,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-12 02:27:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 02:27:41,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:41,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:41,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:27:41,395 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:41,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash 722375763, now seen corresponding path program 1 times [2023-11-12 02:27:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:41,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921726285] [2023-11-12 02:27:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:41,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:41,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921726285] [2023-11-12 02:27:41,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921726285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:41,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290273775] [2023-11-12 02:27:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:41,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:41,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:41,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:41,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:27:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:41,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:27:41,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:27:41,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:41,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290273775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:41,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:27:41,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-12 02:27:41,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510849464] [2023-11-12 02:27:41,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:41,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:27:41,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:27:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:41,617 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:41,644 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2023-11-12 02:27:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:27:41,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 02:27:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:41,645 INFO L225 Difference]: With dead ends: 24 [2023-11-12 02:27:41,646 INFO L226 Difference]: Without dead ends: 18 [2023-11-12 02:27:41,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:41,648 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:41,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:27:41,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-12 02:27:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2023-11-12 02:27:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-11-12 02:27:41,654 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2023-11-12 02:27:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:41,654 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-12 02:27:41,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-11-12 02:27:41,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:27:41,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:41,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:41,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:27:41,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-12 02:27:41,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:41,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:41,862 INFO L85 PathProgramCache]: Analyzing trace with hash 970258327, now seen corresponding path program 1 times [2023-11-12 02:27:41,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:41,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255671235] [2023-11-12 02:27:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:41,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:27:41,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:41,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255671235] [2023-11-12 02:27:41,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255671235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:41,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741837368] [2023-11-12 02:27:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:41,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:41,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:41,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:42,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:27:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:42,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:27:42,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:27:42,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:27:42,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741837368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:42,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:27:42,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-12 02:27:42,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741390937] [2023-11-12 02:27:42,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:42,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:27:42,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:42,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:27:42,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:27:42,117 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:42,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:42,162 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2023-11-12 02:27:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:27:42,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 02:27:42,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:42,164 INFO L225 Difference]: With dead ends: 36 [2023-11-12 02:27:42,164 INFO L226 Difference]: Without dead ends: 27 [2023-11-12 02:27:42,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:27:42,166 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:42,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:27:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-12 02:27:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2023-11-12 02:27:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-12 02:27:42,173 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2023-11-12 02:27:42,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:42,173 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-12 02:27:42,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:42,174 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-12 02:27:42,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 02:27:42,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:42,175 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:42,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:42,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:42,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:42,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:42,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1963781416, now seen corresponding path program 2 times [2023-11-12 02:27:42,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:42,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724081546] [2023-11-12 02:27:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:42,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:27:42,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:42,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724081546] [2023-11-12 02:27:42,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724081546] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168053479] [2023-11-12 02:27:42,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:27:42,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:42,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:42,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:42,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:27:42,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:27:42,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:27:42,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:27:42,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:27:42,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:27:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168053479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:42,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:27:42,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-11-12 02:27:42,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034886817] [2023-11-12 02:27:42,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:42,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 02:27:42,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 02:27:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=106, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:27:42,843 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:42,922 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2023-11-12 02:27:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:27:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-12 02:27:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:42,924 INFO L225 Difference]: With dead ends: 59 [2023-11-12 02:27:42,924 INFO L226 Difference]: Without dead ends: 49 [2023-11-12 02:27:42,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=106, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:27:42,927 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:42,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 33 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-12 02:27:42,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 28. [2023-11-12 02:27:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-12 02:27:42,935 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2023-11-12 02:27:42,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:42,935 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-12 02:27:42,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-11-12 02:27:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 02:27:42,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:42,937 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:42,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:43,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:43,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:43,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1992579314, now seen corresponding path program 3 times [2023-11-12 02:27:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:43,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666811625] [2023-11-12 02:27:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-12 02:27:43,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:43,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666811625] [2023-11-12 02:27:43,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666811625] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123303271] [2023-11-12 02:27:43,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:27:43,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:43,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:43,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:43,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:27:43,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-12 02:27:43,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:27:43,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:27:43,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-12 02:27:43,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-12 02:27:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123303271] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:43,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:27:43,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-12 02:27:43,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958444201] [2023-11-12 02:27:43,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:43,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 02:27:43,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 02:27:43,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:27:43,803 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:43,977 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2023-11-12 02:27:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:27:43,978 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-12 02:27:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:43,988 INFO L225 Difference]: With dead ends: 97 [2023-11-12 02:27:43,988 INFO L226 Difference]: Without dead ends: 91 [2023-11-12 02:27:43,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:27:43,992 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 116 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:43,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 44 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-12 02:27:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 35. [2023-11-12 02:27:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-11-12 02:27:44,006 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 26 [2023-11-12 02:27:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:44,006 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-11-12 02:27:44,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-11-12 02:27:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-12 02:27:44,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:44,008 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:44,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:44,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:44,214 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:44,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1597249384, now seen corresponding path program 4 times [2023-11-12 02:27:44,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:44,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645767117] [2023-11-12 02:27:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:44,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-12 02:27:44,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:44,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645767117] [2023-11-12 02:27:44,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645767117] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:44,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637387737] [2023-11-12 02:27:44,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 02:27:44,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:44,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:44,655 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:44,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:27:44,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 02:27:44,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:27:44,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:27:44,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-12 02:27:44,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-12 02:27:45,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637387737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:45,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:27:45,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2023-11-12 02:27:45,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519171427] [2023-11-12 02:27:45,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:45,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-12 02:27:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-12 02:27:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=742, Unknown=0, NotChecked=0, Total=1482 [2023-11-12 02:27:45,330 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:45,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:45,652 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2023-11-12 02:27:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-12 02:27:45,653 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-12 02:27:45,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:45,654 INFO L225 Difference]: With dead ends: 165 [2023-11-12 02:27:45,654 INFO L226 Difference]: Without dead ends: 145 [2023-11-12 02:27:45,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=740, Invalid=742, Unknown=0, NotChecked=0, Total=1482 [2023-11-12 02:27:45,657 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 192 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:45,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 85 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:27:45,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-12 02:27:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 64. [2023-11-12 02:27:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2023-11-12 02:27:45,670 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 33 [2023-11-12 02:27:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:45,670 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2023-11-12 02:27:45,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:27:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2023-11-12 02:27:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-12 02:27:45,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:45,673 INFO L195 NwaCegarLoop]: trace histogram [36, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:45,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:45,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:45,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:45,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:45,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1965047026, now seen corresponding path program 5 times [2023-11-12 02:27:45,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:45,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523520104] [2023-11-12 02:27:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:45,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2023-11-12 02:27:46,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:46,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523520104] [2023-11-12 02:27:46,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523520104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:46,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811312845] [2023-11-12 02:27:46,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-12 02:27:46,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:27:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:46,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:27:46,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1dcec7-2765-404e-a20c-fafdb6f48c54/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process