./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-2.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_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/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_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/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_06b109f9-8c69-4af4-84e4-403e27253e6d/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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:35,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:35,609 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:06:35,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:35,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:35,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:35,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:35,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:35,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:35,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:35,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:35,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:35,667 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:35,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:35,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:35,670 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:35,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:35,671 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:35,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:35,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:35,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:35,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:35,674 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:35,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:35,675 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:35,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:35,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:35,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:35,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:35,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:35,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:35,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:35,680 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:35,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:35,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:35,681 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:35,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:35,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:35,682 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:35,682 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_06b109f9-8c69-4af4-84e4-403e27253e6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2023-11-12 02:06:35,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:36,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:36,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:36,017 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:36,018 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:36,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/bitvector/byte_add_2-2.i [2023-11-12 02:06:39,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:39,333 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:39,334 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/sv-benchmarks/c/bitvector/byte_add_2-2.i [2023-11-12 02:06:39,343 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/data/6a01273d5/3206264074af457b8bdc0cf66c5e763b/FLAG342bf1142 [2023-11-12 02:06:39,355 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/data/6a01273d5/3206264074af457b8bdc0cf66c5e763b [2023-11-12 02:06:39,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:39,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:39,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:39,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:39,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:39,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b1272a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39, skipping insertion in model container [2023-11-12 02:06:39,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:39,637 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_06b109f9-8c69-4af4-84e4-403e27253e6d/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2023-11-12 02:06:39,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:39,693 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:39,707 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_06b109f9-8c69-4af4-84e4-403e27253e6d/sv-benchmarks/c/bitvector/byte_add_2-2.i[1168,1181] [2023-11-12 02:06:39,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:39,776 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:39,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39 WrapperNode [2023-11-12 02:06:39,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:39,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:39,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:39,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:39,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,879 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2023-11-12 02:06:39,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:39,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:39,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:39,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:39,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,896 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:39,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:39,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:39,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:39,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:39,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:39,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:39,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:40,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:40,107 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:40,110 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:40,683 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:40,689 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:40,690 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:06:40,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:40 BoogieIcfgContainer [2023-11-12 02:06:40,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:40,701 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:40,701 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:40,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:40,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:39" (1/3) ... [2023-11-12 02:06:40,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1061f09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:40, skipping insertion in model container [2023-11-12 02:06:40,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (2/3) ... [2023-11-12 02:06:40,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1061f09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:40, skipping insertion in model container [2023-11-12 02:06:40,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:40" (3/3) ... [2023-11-12 02:06:40,707 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2023-11-12 02:06:40,729 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:40,729 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:06:40,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:40,791 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;@2bd23979, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:40,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:06:40,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 47 states have internal predecessors, (83), 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 02:06:40,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 02:06:40,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:40,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:40,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:40,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:40,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1456424742, now seen corresponding path program 1 times [2023-11-12 02:06:40,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:40,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183930827] [2023-11-12 02:06:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:40,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:41,133 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 02:06:41,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:41,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183930827] [2023-11-12 02:06:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183930827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:41,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:41,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:41,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681201953] [2023-11-12 02:06:41,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:41,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:06:41,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:06:41,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:06:41,200 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 47 states have internal predecessors, (83), 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 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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 02:06:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:41,230 INFO L93 Difference]: Finished difference Result 69 states and 116 transitions. [2023-11-12 02:06:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:06:41,232 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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) Word has length 15 [2023-11-12 02:06:41,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:41,245 INFO L225 Difference]: With dead ends: 69 [2023-11-12 02:06:41,246 INFO L226 Difference]: Without dead ends: 44 [2023-11-12 02:06:41,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:06:41,254 INFO L413 NwaCegarLoop]: 80 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, 80 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 [2023-11-12 02:06:41,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:41,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-12 02:06:41,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-12 02:06:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 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 02:06:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 76 transitions. [2023-11-12 02:06:41,307 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 76 transitions. Word has length 15 [2023-11-12 02:06:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:41,309 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 76 transitions. [2023-11-12 02:06:41,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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 02:06:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 76 transitions. [2023-11-12 02:06:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 02:06:41,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:41,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:41,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:06:41,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:41,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash -548834760, now seen corresponding path program 1 times [2023-11-12 02:06:41,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:41,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535442022] [2023-11-12 02:06:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:41,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:41,602 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 02:06:41,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:41,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535442022] [2023-11-12 02:06:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535442022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:41,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:06:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555431673] [2023-11-12 02:06:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:41,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:41,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:41,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:41,608 INFO L87 Difference]: Start difference. First operand 44 states and 76 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 02:06:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:41,807 INFO L93 Difference]: Finished difference Result 101 states and 180 transitions. [2023-11-12 02:06:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:41,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) Word has length 15 [2023-11-12 02:06:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:41,812 INFO L225 Difference]: With dead ends: 101 [2023-11-12 02:06:41,812 INFO L226 Difference]: Without dead ends: 67 [2023-11-12 02:06:41,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:06:41,822 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:41,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 82 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:06:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-12 02:06:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2023-11-12 02:06:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.578125) internal successors, (101), 64 states have internal predecessors, (101), 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 02:06:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 101 transitions. [2023-11-12 02:06:41,845 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 101 transitions. Word has length 15 [2023-11-12 02:06:41,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:41,846 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 101 transitions. [2023-11-12 02:06:41,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 02:06:41,846 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 101 transitions. [2023-11-12 02:06:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 02:06:41,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:41,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:41,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:06:41,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:41,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:41,849 INFO L85 PathProgramCache]: Analyzing trace with hash 427733795, now seen corresponding path program 1 times [2023-11-12 02:06:41,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:41,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141104179] [2023-11-12 02:06:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:41,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:42,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:42,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141104179] [2023-11-12 02:06:42,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141104179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:42,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:42,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:42,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101426382] [2023-11-12 02:06:42,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:42,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:42,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:42,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:42,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:42,156 INFO L87 Difference]: Start difference. First operand 65 states and 101 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 02:06:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:42,574 INFO L93 Difference]: Finished difference Result 158 states and 273 transitions. [2023-11-12 02:06:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:42,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Word has length 21 [2023-11-12 02:06:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:42,581 INFO L225 Difference]: With dead ends: 158 [2023-11-12 02:06:42,583 INFO L226 Difference]: Without dead ends: 124 [2023-11-12 02:06:42,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:42,592 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 92 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:42,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 107 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:06:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-12 02:06:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2023-11-12 02:06:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.5632183908045978) internal successors, (136), 87 states have internal predecessors, (136), 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 02:06:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 136 transitions. [2023-11-12 02:06:42,620 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 136 transitions. Word has length 21 [2023-11-12 02:06:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:42,621 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 136 transitions. [2023-11-12 02:06:42,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 02:06:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 136 transitions. [2023-11-12 02:06:42,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 02:06:42,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:42,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:42,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:06:42,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:42,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:42,624 INFO L85 PathProgramCache]: Analyzing trace with hash 62855698, now seen corresponding path program 1 times [2023-11-12 02:06:42,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:42,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180080488] [2023-11-12 02:06:42,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:42,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:06:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180080488] [2023-11-12 02:06:42,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180080488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:42,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:42,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210567044] [2023-11-12 02:06:42,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:42,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:42,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:42,900 INFO L87 Difference]: Start difference. First operand 88 states and 136 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 02:06:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:43,149 INFO L93 Difference]: Finished difference Result 251 states and 384 transitions. [2023-11-12 02:06:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:06:43,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 27 [2023-11-12 02:06:43,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:43,154 INFO L225 Difference]: With dead ends: 251 [2023-11-12 02:06:43,154 INFO L226 Difference]: Without dead ends: 176 [2023-11-12 02:06:43,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:43,156 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 95 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:43,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 209 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:06:43,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-12 02:06:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 96. [2023-11-12 02:06:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.5263157894736843) internal successors, (145), 95 states have internal predecessors, (145), 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 02:06:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 145 transitions. [2023-11-12 02:06:43,177 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 145 transitions. Word has length 27 [2023-11-12 02:06:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:43,178 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 145 transitions. [2023-11-12 02:06:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 02:06:43,179 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 145 transitions. [2023-11-12 02:06:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 02:06:43,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:43,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:43,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:06:43,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:43,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash -333506399, now seen corresponding path program 1 times [2023-11-12 02:06:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:43,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799144086] [2023-11-12 02:06:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:43,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:06:43,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:43,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799144086] [2023-11-12 02:06:43,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799144086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:43,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:43,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915726344] [2023-11-12 02:06:43,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:43,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:43,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:43,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:43,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:43,437 INFO L87 Difference]: Start difference. First operand 96 states and 145 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 02:06:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:43,665 INFO L93 Difference]: Finished difference Result 272 states and 410 transitions. [2023-11-12 02:06:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:06:43,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 28 [2023-11-12 02:06:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:43,668 INFO L225 Difference]: With dead ends: 272 [2023-11-12 02:06:43,669 INFO L226 Difference]: Without dead ends: 196 [2023-11-12 02:06:43,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:43,673 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 99 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:43,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 217 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:06:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-12 02:06:43,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 106. [2023-11-12 02:06:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.5047619047619047) internal successors, (158), 105 states have internal predecessors, (158), 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 02:06:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 158 transitions. [2023-11-12 02:06:43,702 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 158 transitions. Word has length 28 [2023-11-12 02:06:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:43,703 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 158 transitions. [2023-11-12 02:06:43,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 02:06:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 158 transitions. [2023-11-12 02:06:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 02:06:43,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:43,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:43,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:06:43,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:43,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1267017571, now seen corresponding path program 1 times [2023-11-12 02:06:43,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:43,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494398609] [2023-11-12 02:06:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:43,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:43,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:43,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494398609] [2023-11-12 02:06:43,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494398609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:43,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82726075] [2023-11-12 02:06:43,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:43,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:43,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:43,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:43,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:06:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:44,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:06:44,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:06:44,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:44,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82726075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:44,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:06:44,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-12 02:06:44,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877006628] [2023-11-12 02:06:44,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:44,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:44,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:44,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:06:44,145 INFO L87 Difference]: Start difference. First operand 106 states and 158 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 02:06:44,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:44,416 INFO L93 Difference]: Finished difference Result 224 states and 357 transitions. [2023-11-12 02:06:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:06:44,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 29 [2023-11-12 02:06:44,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:44,418 INFO L225 Difference]: With dead ends: 224 [2023-11-12 02:06:44,419 INFO L226 Difference]: Without dead ends: 151 [2023-11-12 02:06:44,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:06:44,420 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 37 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:44,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 142 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:06:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-12 02:06:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 135. [2023-11-12 02:06:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.4402985074626866) internal successors, (193), 134 states have internal predecessors, (193), 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 02:06:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 193 transitions. [2023-11-12 02:06:44,434 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 193 transitions. Word has length 29 [2023-11-12 02:06:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:44,434 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 193 transitions. [2023-11-12 02:06:44,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 02:06:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 193 transitions. [2023-11-12 02:06:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-12 02:06:44,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:44,436 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:44,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:44,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:44,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:44,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:44,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1958263922, now seen corresponding path program 1 times [2023-11-12 02:06:44,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:44,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515829572] [2023-11-12 02:06:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:44,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:44,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515829572] [2023-11-12 02:06:44,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515829572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:44,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070775289] [2023-11-12 02:06:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:44,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:44,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:44,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:44,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:06:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:44,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:06:44,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 02:06:44,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070775289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:44,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:06:44,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-12 02:06:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715687697] [2023-11-12 02:06:44,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:44,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:06:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:06:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:06:44,941 INFO L87 Difference]: Start difference. First operand 135 states and 193 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 02:06:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:45,290 INFO L93 Difference]: Finished difference Result 530 states and 776 transitions. [2023-11-12 02:06:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:06:45,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 35 [2023-11-12 02:06:45,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:45,294 INFO L225 Difference]: With dead ends: 530 [2023-11-12 02:06:45,294 INFO L226 Difference]: Without dead ends: 400 [2023-11-12 02:06:45,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:06:45,295 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 179 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:45,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 371 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:06:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-12 02:06:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 305. [2023-11-12 02:06:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.4078947368421053) internal successors, (428), 304 states have internal predecessors, (428), 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 02:06:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 428 transitions. [2023-11-12 02:06:45,315 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 428 transitions. Word has length 35 [2023-11-12 02:06:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:45,315 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 428 transitions. [2023-11-12 02:06:45,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 02:06:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 428 transitions. [2023-11-12 02:06:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-12 02:06:45,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:45,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:45,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:45,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:06:45,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:45,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2050511854, now seen corresponding path program 1 times [2023-11-12 02:06:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:45,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037540490] [2023-11-12 02:06:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:45,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:45,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:45,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037540490] [2023-11-12 02:06:45,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037540490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:45,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498495089] [2023-11-12 02:06:45,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:45,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:45,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:45,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:45,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:06:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:45,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:06:45,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-12 02:06:45,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:45,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498495089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:45,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:06:45,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-11-12 02:06:45,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430226097] [2023-11-12 02:06:45,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:45,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:45,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:45,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:45,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:45,885 INFO L87 Difference]: Start difference. First operand 305 states and 428 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 02:06:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:46,091 INFO L93 Difference]: Finished difference Result 712 states and 1036 transitions. [2023-11-12 02:06:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:06:46,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 36 [2023-11-12 02:06:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:46,095 INFO L225 Difference]: With dead ends: 712 [2023-11-12 02:06:46,095 INFO L226 Difference]: Without dead ends: 435 [2023-11-12 02:06:46,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:46,097 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 36 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:46,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 142 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:06:46,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-11-12 02:06:46,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 363. [2023-11-12 02:06:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3756906077348066) internal successors, (498), 362 states have internal predecessors, (498), 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 02:06:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 498 transitions. [2023-11-12 02:06:46,114 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 498 transitions. Word has length 36 [2023-11-12 02:06:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:46,115 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 498 transitions. [2023-11-12 02:06:46,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 02:06:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 498 transitions. [2023-11-12 02:06:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-12 02:06:46,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:46,117 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:46,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:46,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:06:46,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:46,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1389376447, now seen corresponding path program 1 times [2023-11-12 02:06:46,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:46,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527793122] [2023-11-12 02:06:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:46,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-12 02:06:46,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:46,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527793122] [2023-11-12 02:06:46,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527793122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:46,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:46,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:06:46,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774835135] [2023-11-12 02:06:46,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:46,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:46,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:46,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:46,464 INFO L87 Difference]: Start difference. First operand 363 states and 498 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 02:06:46,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:46,479 INFO L93 Difference]: Finished difference Result 407 states and 555 transitions. [2023-11-12 02:06:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:46,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 42 [2023-11-12 02:06:46,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:46,481 INFO L225 Difference]: With dead ends: 407 [2023-11-12 02:06:46,481 INFO L226 Difference]: Without dead ends: 155 [2023-11-12 02:06:46,482 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 02:06:46,483 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 63 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:46,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 72 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:46,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-12 02:06:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-12 02:06:46,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.344155844155844) internal successors, (207), 154 states have internal predecessors, (207), 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 02:06:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2023-11-12 02:06:46,494 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 207 transitions. Word has length 42 [2023-11-12 02:06:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:46,495 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 207 transitions. [2023-11-12 02:06:46,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 02:06:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 207 transitions. [2023-11-12 02:06:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-12 02:06:46,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:46,497 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:46,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:06:46,497 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:46,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash 510150253, now seen corresponding path program 1 times [2023-11-12 02:06:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65858646] [2023-11-12 02:06:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-12 02:06:46,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65858646] [2023-11-12 02:06:46,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65858646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:46,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:46,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:06:46,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618664273] [2023-11-12 02:06:46,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:46,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:06:46,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:46,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:06:46,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:06:46,711 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 02:06:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:46,940 INFO L93 Difference]: Finished difference Result 329 states and 434 transitions. [2023-11-12 02:06:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:06:46,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 53 [2023-11-12 02:06:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:46,942 INFO L225 Difference]: With dead ends: 329 [2023-11-12 02:06:46,943 INFO L226 Difference]: Without dead ends: 185 [2023-11-12 02:06:46,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:06:46,944 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 69 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:46,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 107 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:06:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-12 02:06:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 144. [2023-11-12 02:06:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.3356643356643356) internal successors, (191), 143 states have internal predecessors, (191), 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 02:06:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 191 transitions. [2023-11-12 02:06:46,954 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 191 transitions. Word has length 53 [2023-11-12 02:06:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:46,954 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 191 transitions. [2023-11-12 02:06:46,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 02:06:46,955 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 191 transitions. [2023-11-12 02:06:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 02:06:46,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:46,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:46,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:06:46,956 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:46,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1983080570, now seen corresponding path program 1 times [2023-11-12 02:06:46,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525925279] [2023-11-12 02:06:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:46,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:06:47,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:47,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525925279] [2023-11-12 02:06:47,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525925279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:47,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:47,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:06:47,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009193066] [2023-11-12 02:06:47,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:47,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:47,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:06:47,092 INFO L87 Difference]: Start difference. First operand 144 states and 191 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 02:06:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:47,113 INFO L93 Difference]: Finished difference Result 214 states and 278 transitions. [2023-11-12 02:06:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 61 [2023-11-12 02:06:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:47,115 INFO L225 Difference]: With dead ends: 214 [2023-11-12 02:06:47,115 INFO L226 Difference]: Without dead ends: 176 [2023-11-12 02:06:47,116 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 02:06:47,116 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:47,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 136 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:47,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-12 02:06:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 163. [2023-11-12 02:06:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.3209876543209877) internal successors, (214), 162 states have internal predecessors, (214), 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 02:06:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 214 transitions. [2023-11-12 02:06:47,127 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 214 transitions. Word has length 61 [2023-11-12 02:06:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:47,128 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 214 transitions. [2023-11-12 02:06:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 02:06:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 214 transitions. [2023-11-12 02:06:47,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 02:06:47,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:47,129 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:47,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:06:47,130 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:47,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:47,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1560378744, now seen corresponding path program 1 times [2023-11-12 02:06:47,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:47,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447442835] [2023-11-12 02:06:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:47,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:47,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447442835] [2023-11-12 02:06:47,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447442835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477177040] [2023-11-12 02:06:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:47,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:47,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:47,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:47,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:06:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:47,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:06:47,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-12 02:06:47,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:47,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477177040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:47,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:06:47,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 11 [2023-11-12 02:06:47,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069573450] [2023-11-12 02:06:47,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:47,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:47,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:47,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:47,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:06:47,753 INFO L87 Difference]: Start difference. First operand 163 states and 214 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 02:06:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:47,863 INFO L93 Difference]: Finished difference Result 302 states and 398 transitions. [2023-11-12 02:06:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:06:47,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 61 [2023-11-12 02:06:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:47,866 INFO L225 Difference]: With dead ends: 302 [2023-11-12 02:06:47,866 INFO L226 Difference]: Without dead ends: 145 [2023-11-12 02:06:47,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:06:47,868 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 47 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:47,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 79 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:06:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-12 02:06:47,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 133. [2023-11-12 02:06:47,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3333333333333333) internal successors, (176), 132 states have internal predecessors, (176), 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 02:06:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 176 transitions. [2023-11-12 02:06:47,877 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 176 transitions. Word has length 61 [2023-11-12 02:06:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:47,878 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 176 transitions. [2023-11-12 02:06:47,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 02:06:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 176 transitions. [2023-11-12 02:06:47,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 02:06:47,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:47,880 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:47,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:48,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:48,086 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:48,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash -902612232, now seen corresponding path program 1 times [2023-11-12 02:06:48,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:48,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048005326] [2023-11-12 02:06:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:48,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-12 02:06:48,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:48,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048005326] [2023-11-12 02:06:48,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048005326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:48,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:48,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:06:48,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376251217] [2023-11-12 02:06:48,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:48,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:06:48,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:48,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:06:48,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:48,353 INFO L87 Difference]: Start difference. First operand 133 states and 176 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 02:06:48,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:48,676 INFO L93 Difference]: Finished difference Result 513 states and 678 transitions. [2023-11-12 02:06:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:06:48,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 68 [2023-11-12 02:06:48,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:48,679 INFO L225 Difference]: With dead ends: 513 [2023-11-12 02:06:48,679 INFO L226 Difference]: Without dead ends: 396 [2023-11-12 02:06:48,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:48,681 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 167 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:48,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 323 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:06:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-12 02:06:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 133. [2023-11-12 02:06:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3333333333333333) internal successors, (176), 132 states have internal predecessors, (176), 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 02:06:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 176 transitions. [2023-11-12 02:06:48,695 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 176 transitions. Word has length 68 [2023-11-12 02:06:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:48,695 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 176 transitions. [2023-11-12 02:06:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 02:06:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 176 transitions. [2023-11-12 02:06:48,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:06:48,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:48,697 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:48,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:06:48,698 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:48,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1749829521, now seen corresponding path program 1 times [2023-11-12 02:06:48,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:48,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123340682] [2023-11-12 02:06:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:48,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-12 02:06:49,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123340682] [2023-11-12 02:06:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123340682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:49,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:49,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:06:49,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037463600] [2023-11-12 02:06:49,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:49,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:06:49,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:06:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:49,014 INFO L87 Difference]: Start difference. First operand 133 states and 176 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 02:06:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:49,164 INFO L93 Difference]: Finished difference Result 409 states and 535 transitions. [2023-11-12 02:06:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:06:49,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 69 [2023-11-12 02:06:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:49,169 INFO L225 Difference]: With dead ends: 409 [2023-11-12 02:06:49,169 INFO L226 Difference]: Without dead ends: 292 [2023-11-12 02:06:49,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:49,170 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 170 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:49,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 158 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:06:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-12 02:06:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 196. [2023-11-12 02:06:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.317948717948718) internal successors, (257), 195 states have internal predecessors, (257), 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 02:06:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 257 transitions. [2023-11-12 02:06:49,190 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 257 transitions. Word has length 69 [2023-11-12 02:06:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:49,190 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 257 transitions. [2023-11-12 02:06:49,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 02:06:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 257 transitions. [2023-11-12 02:06:49,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 02:06:49,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:49,192 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:49,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:06:49,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:49,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:49,193 INFO L85 PathProgramCache]: Analyzing trace with hash -959636883, now seen corresponding path program 1 times [2023-11-12 02:06:49,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:49,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137815845] [2023-11-12 02:06:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-12 02:06:49,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:49,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137815845] [2023-11-12 02:06:49,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137815845] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:49,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128120588] [2023-11-12 02:06:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:49,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:49,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:49,707 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:49,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:06:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:49,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 02:06:49,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-12 02:06:50,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:06:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-12 02:06:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128120588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:06:50,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:06:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-12 02:06:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427951798] [2023-11-12 02:06:50,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:06:50,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 02:06:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 02:06:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:06:50,303 INFO L87 Difference]: Start difference. First operand 196 states and 257 transitions. Second operand has 17 states, 17 states have (on average 8.529411764705882) internal successors, (145), 17 states have internal predecessors, (145), 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 02:06:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:51,429 INFO L93 Difference]: Finished difference Result 843 states and 1072 transitions. [2023-11-12 02:06:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-12 02:06:51,430 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.529411764705882) internal successors, (145), 17 states have internal predecessors, (145), 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 69 [2023-11-12 02:06:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:51,435 INFO L225 Difference]: With dead ends: 843 [2023-11-12 02:06:51,436 INFO L226 Difference]: Without dead ends: 834 [2023-11-12 02:06:51,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=441, Invalid=1281, Unknown=0, NotChecked=0, Total=1722 [2023-11-12 02:06:51,438 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 397 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:51,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 786 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:06:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-11-12 02:06:51,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 360. [2023-11-12 02:06:51,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.317548746518106) internal successors, (473), 359 states have internal predecessors, (473), 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 02:06:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 473 transitions. [2023-11-12 02:06:51,483 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 473 transitions. Word has length 69 [2023-11-12 02:06:51,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:51,483 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 473 transitions. [2023-11-12 02:06:51,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.529411764705882) internal successors, (145), 17 states have internal predecessors, (145), 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 02:06:51,484 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 473 transitions. [2023-11-12 02:06:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-12 02:06:51,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:51,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:51,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:51,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:51,691 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:51,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1846668374, now seen corresponding path program 1 times [2023-11-12 02:06:51,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166534432] [2023-11-12 02:06:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-12 02:06:51,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:51,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166534432] [2023-11-12 02:06:51,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166534432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:51,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:51,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:51,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590278508] [2023-11-12 02:06:51,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:51,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:51,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:51,874 INFO L87 Difference]: Start difference. First operand 360 states and 473 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 02:06:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:51,941 INFO L93 Difference]: Finished difference Result 378 states and 500 transitions. [2023-11-12 02:06:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:06:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 70 [2023-11-12 02:06:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:51,945 INFO L225 Difference]: With dead ends: 378 [2023-11-12 02:06:51,945 INFO L226 Difference]: Without dead ends: 371 [2023-11-12 02:06:51,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:51,946 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 21 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:51,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 165 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:51,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-12 02:06:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 361. [2023-11-12 02:06:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3166666666666667) internal successors, (474), 360 states have internal predecessors, (474), 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 02:06:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 474 transitions. [2023-11-12 02:06:51,978 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 474 transitions. Word has length 70 [2023-11-12 02:06:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:51,979 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 474 transitions. [2023-11-12 02:06:51,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 02:06:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 474 transitions. [2023-11-12 02:06:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-12 02:06:51,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:51,981 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:51,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:06:51,981 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:51,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,983 INFO L85 PathProgramCache]: Analyzing trace with hash -71661012, now seen corresponding path program 1 times [2023-11-12 02:06:51,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096861043] [2023-11-12 02:06:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:06:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:52,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096861043] [2023-11-12 02:06:52,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096861043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:52,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523578484] [2023-11-12 02:06:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:52,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:52,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:52,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:52,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:06:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:52,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:06:52,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-12 02:06:52,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:52,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523578484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:52,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:06:52,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-12 02:06:52,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678109625] [2023-11-12 02:06:52,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:52,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:06:52,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:52,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:06:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:06:52,798 INFO L87 Difference]: Start difference. First operand 361 states and 474 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 02:06:52,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:52,839 INFO L93 Difference]: Finished difference Result 373 states and 491 transitions. [2023-11-12 02:06:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:06:52,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 70 [2023-11-12 02:06:52,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:52,842 INFO L225 Difference]: With dead ends: 373 [2023-11-12 02:06:52,842 INFO L226 Difference]: Without dead ends: 366 [2023-11-12 02:06:52,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:06:52,843 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 7 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:52,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 117 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:52,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-11-12 02:06:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 361. [2023-11-12 02:06:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3166666666666667) internal successors, (474), 360 states have internal predecessors, (474), 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 02:06:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 474 transitions. [2023-11-12 02:06:52,872 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 474 transitions. Word has length 70 [2023-11-12 02:06:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:52,873 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 474 transitions. [2023-11-12 02:06:52,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 02:06:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 474 transitions. [2023-11-12 02:06:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 02:06:52,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:52,874 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:52,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-12 02:06:53,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:06:53,080 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:53,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1198286598, now seen corresponding path program 1 times [2023-11-12 02:06:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286735247] [2023-11-12 02:06:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-12 02:06:53,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:53,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286735247] [2023-11-12 02:06:53,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286735247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:53,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751049680] [2023-11-12 02:06:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:53,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:53,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:53,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:53,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:06:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:53,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:06:53,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-12 02:06:53,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:06:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-12 02:06:53,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751049680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:06:53,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:06:53,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 11 [2023-11-12 02:06:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108941798] [2023-11-12 02:06:53,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:06:53,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:06:53,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:53,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:06:53,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:06:53,643 INFO L87 Difference]: Start difference. First operand 361 states and 474 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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 02:06:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:54,822 INFO L93 Difference]: Finished difference Result 1723 states and 2358 transitions. [2023-11-12 02:06:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-12 02:06:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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 71 [2023-11-12 02:06:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:54,832 INFO L225 Difference]: With dead ends: 1723 [2023-11-12 02:06:54,832 INFO L226 Difference]: Without dead ends: 1294 [2023-11-12 02:06:54,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2023-11-12 02:06:54,834 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 362 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:54,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 317 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:06:54,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2023-11-12 02:06:54,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1114. [2023-11-12 02:06:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 1.3036837376460018) internal successors, (1451), 1113 states have internal predecessors, (1451), 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 02:06:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1451 transitions. [2023-11-12 02:06:54,959 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1451 transitions. Word has length 71 [2023-11-12 02:06:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:54,960 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 1451 transitions. [2023-11-12 02:06:54,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 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 02:06:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1451 transitions. [2023-11-12 02:06:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 02:06:54,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:54,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:54,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:55,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:06:55,172 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:55,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash 182713714, now seen corresponding path program 1 times [2023-11-12 02:06:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:55,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872607766] [2023-11-12 02:06:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:55,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-12 02:06:55,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872607766] [2023-11-12 02:06:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872607766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072527519] [2023-11-12 02:06:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:55,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:55,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:55,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:55,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:06:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:55,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:06:55,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-12 02:06:56,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:56,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072527519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:56,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:06:56,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-12 02:06:56,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132084054] [2023-11-12 02:06:56,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:56,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:06:56,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:56,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:06:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:06:56,080 INFO L87 Difference]: Start difference. First operand 1114 states and 1451 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 02:06:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:56,279 INFO L93 Difference]: Finished difference Result 1132 states and 1476 transitions. [2023-11-12 02:06:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:56,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 71 [2023-11-12 02:06:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:56,288 INFO L225 Difference]: With dead ends: 1132 [2023-11-12 02:06:56,288 INFO L226 Difference]: Without dead ends: 1127 [2023-11-12 02:06:56,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:06:56,290 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 33 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:56,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 207 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:06:56,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2023-11-12 02:06:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1117. [2023-11-12 02:06:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 1.303763440860215) internal successors, (1455), 1116 states have internal predecessors, (1455), 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 02:06:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1455 transitions. [2023-11-12 02:06:56,410 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1455 transitions. Word has length 71 [2023-11-12 02:06:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:56,410 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1455 transitions. [2023-11-12 02:06:56,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 02:06:56,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1455 transitions. [2023-11-12 02:06:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 02:06:56,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:56,414 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:56,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:56,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:56,621 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:56,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash 239972016, now seen corresponding path program 1 times [2023-11-12 02:06:56,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:56,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43172735] [2023-11-12 02:06:56,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-12 02:06:56,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:56,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43172735] [2023-11-12 02:06:56,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43172735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:56,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:06:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062516943] [2023-11-12 02:06:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:56,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:06:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:06:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:56,981 INFO L87 Difference]: Start difference. First operand 1117 states and 1455 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 02:06:57,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:57,831 INFO L93 Difference]: Finished difference Result 3095 states and 4055 transitions. [2023-11-12 02:06:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:06:57,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 71 [2023-11-12 02:06:57,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:57,845 INFO L225 Difference]: With dead ends: 3095 [2023-11-12 02:06:57,845 INFO L226 Difference]: Without dead ends: 2344 [2023-11-12 02:06:57,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:06:57,848 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 337 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:57,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 618 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:06:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2023-11-12 02:06:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1117. [2023-11-12 02:06:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 1.3028673835125448) internal successors, (1454), 1116 states have internal predecessors, (1454), 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 02:06:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1454 transitions. [2023-11-12 02:06:57,992 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1454 transitions. Word has length 71 [2023-11-12 02:06:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:57,992 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1454 transitions. [2023-11-12 02:06:57,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 02:06:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1454 transitions. [2023-11-12 02:06:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 02:06:57,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:57,995 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:57,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 02:06:57,995 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:57,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash 515398907, now seen corresponding path program 1 times [2023-11-12 02:06:57,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690024266] [2023-11-12 02:06:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:57,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-12 02:06:58,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:58,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690024266] [2023-11-12 02:06:58,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690024266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:58,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199857692] [2023-11-12 02:06:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:58,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:58,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:58,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:58,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:06:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:58,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-12 02:06:58,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-12 02:06:59,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:07:00,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199857692] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:00,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:00,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 13] total 26 [2023-11-12 02:07:00,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358039888] [2023-11-12 02:07:00,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:00,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-12 02:07:00,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-12 02:07:00,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2023-11-12 02:07:00,725 INFO L87 Difference]: Start difference. First operand 1117 states and 1454 transitions. Second operand has 26 states, 26 states have (on average 6.076923076923077) internal successors, (158), 26 states have internal predecessors, (158), 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 02:07:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:04,010 INFO L93 Difference]: Finished difference Result 3645 states and 4525 transitions. [2023-11-12 02:07:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-12 02:07:04,011 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.076923076923077) internal successors, (158), 26 states have internal predecessors, (158), 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 73 [2023-11-12 02:07:04,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:04,024 INFO L225 Difference]: With dead ends: 3645 [2023-11-12 02:07:04,025 INFO L226 Difference]: Without dead ends: 2551 [2023-11-12 02:07:04,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=913, Invalid=2993, Unknown=0, NotChecked=0, Total=3906 [2023-11-12 02:07:04,031 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1161 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:04,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 1251 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:07:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2023-11-12 02:07:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 1167. [2023-11-12 02:07:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 1.2564322469982847) internal successors, (1465), 1166 states have internal predecessors, (1465), 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 02:07:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1465 transitions. [2023-11-12 02:07:04,216 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1465 transitions. Word has length 73 [2023-11-12 02:07:04,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:04,216 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1465 transitions. [2023-11-12 02:07:04,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.076923076923077) internal successors, (158), 26 states have internal predecessors, (158), 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 02:07:04,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1465 transitions. [2023-11-12 02:07:04,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-12 02:07:04,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:04,221 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:04,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:04,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:04,428 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:04,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:04,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2026705281, now seen corresponding path program 1 times [2023-11-12 02:07:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:04,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844605764] [2023-11-12 02:07:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:04,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-12 02:07:05,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:05,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844605764] [2023-11-12 02:07:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844605764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586677902] [2023-11-12 02:07:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:05,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:05,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:05,128 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:05,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:07:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:05,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:07:05,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-12 02:07:05,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:05,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586677902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:05,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:05,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-12 02:07:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118043210] [2023-11-12 02:07:05,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:05,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:05,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:05,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:05,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:07:05,360 INFO L87 Difference]: Start difference. First operand 1167 states and 1465 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 02:07:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:05,605 INFO L93 Difference]: Finished difference Result 1183 states and 1487 transitions. [2023-11-12 02:07:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:05,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 74 [2023-11-12 02:07:05,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:05,613 INFO L225 Difference]: With dead ends: 1183 [2023-11-12 02:07:05,613 INFO L226 Difference]: Without dead ends: 1178 [2023-11-12 02:07:05,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:07:05,615 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 26 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:05,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 160 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:07:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-11-12 02:07:05,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1167. [2023-11-12 02:07:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 1.2564322469982847) internal successors, (1465), 1166 states have internal predecessors, (1465), 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 02:07:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1465 transitions. [2023-11-12 02:07:05,755 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1465 transitions. Word has length 74 [2023-11-12 02:07:05,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:05,755 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1465 transitions. [2023-11-12 02:07:05,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 02:07:05,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1465 transitions. [2023-11-12 02:07:05,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-12 02:07:05,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:05,758 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:05,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:05,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-12 02:07:05,964 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:05,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:05,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2083963583, now seen corresponding path program 1 times [2023-11-12 02:07:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:05,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810756330] [2023-11-12 02:07:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:07:06,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:06,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810756330] [2023-11-12 02:07:06,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810756330] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:06,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204951826] [2023-11-12 02:07:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:06,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:06,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:06,538 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:06,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:07:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:06,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-12 02:07:06,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 58 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:07,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-12 02:07:07,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204951826] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:07,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 10] total 19 [2023-11-12 02:07:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786404511] [2023-11-12 02:07:07,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:07,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:07,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:07:07,543 INFO L87 Difference]: Start difference. First operand 1167 states and 1465 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 02:07:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:07,726 INFO L93 Difference]: Finished difference Result 1175 states and 1474 transitions. [2023-11-12 02:07:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:07,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 74 [2023-11-12 02:07:07,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:07,734 INFO L225 Difference]: With dead ends: 1175 [2023-11-12 02:07:07,734 INFO L226 Difference]: Without dead ends: 1170 [2023-11-12 02:07:07,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-11-12 02:07:07,735 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:07,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 154 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-11-12 02:07:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1167. [2023-11-12 02:07:07,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 1.2564322469982847) internal successors, (1465), 1166 states have internal predecessors, (1465), 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 02:07:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1465 transitions. [2023-11-12 02:07:07,873 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1465 transitions. Word has length 74 [2023-11-12 02:07:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:07,874 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1465 transitions. [2023-11-12 02:07:07,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 02:07:07,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1465 transitions. [2023-11-12 02:07:07,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 02:07:07,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:07,876 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:07,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:08,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-12 02:07:08,082 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:08,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:08,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1543143818, now seen corresponding path program 1 times [2023-11-12 02:07:08,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:08,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599596605] [2023-11-12 02:07:08,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:08,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 39 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 02:07:08,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:08,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599596605] [2023-11-12 02:07:08,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599596605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:08,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687150566] [2023-11-12 02:07:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:08,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:08,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:08,478 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:08,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:07:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:08,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 02:07:08,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 02:07:09,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 02:07:09,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687150566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:09,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:09,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2023-11-12 02:07:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006663994] [2023-11-12 02:07:09,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:09,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:07:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:07:09,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:07:09,318 INFO L87 Difference]: Start difference. First operand 1167 states and 1465 transitions. Second operand has 18 states, 18 states have (on average 9.11111111111111) internal successors, (164), 18 states have internal predecessors, (164), 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 02:07:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:11,070 INFO L93 Difference]: Finished difference Result 3608 states and 4397 transitions. [2023-11-12 02:07:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:07:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.11111111111111) internal successors, (164), 18 states have internal predecessors, (164), 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 75 [2023-11-12 02:07:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:11,094 INFO L225 Difference]: With dead ends: 3608 [2023-11-12 02:07:11,094 INFO L226 Difference]: Without dead ends: 3603 [2023-11-12 02:07:11,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2023-11-12 02:07:11,098 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 912 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:11,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 752 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:07:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2023-11-12 02:07:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 1452. [2023-11-12 02:07:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 1.3018607856650586) internal successors, (1889), 1451 states have internal predecessors, (1889), 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 02:07:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1889 transitions. [2023-11-12 02:07:11,368 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1889 transitions. Word has length 75 [2023-11-12 02:07:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:11,368 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1889 transitions. [2023-11-12 02:07:11,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.11111111111111) internal successors, (164), 18 states have internal predecessors, (164), 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 02:07:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1889 transitions. [2023-11-12 02:07:11,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 02:07:11,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:11,372 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:11,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:11,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-12 02:07:11,579 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:11,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1541296776, now seen corresponding path program 1 times [2023-11-12 02:07:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997449085] [2023-11-12 02:07:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:11,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:07:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997449085] [2023-11-12 02:07:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997449085] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337995951] [2023-11-12 02:07:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:11,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:11,991 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:11,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 02:07:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-12 02:07:14,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:14,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:14,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337995951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:14,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:14,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2023-11-12 02:07:14,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742128597] [2023-11-12 02:07:14,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:14,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 02:07:14,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:14,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 02:07:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:07:14,547 INFO L87 Difference]: Start difference. First operand 1452 states and 1889 transitions. Second operand has 19 states, 19 states have (on average 11.052631578947368) internal successors, (210), 19 states have internal predecessors, (210), 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 02:07:16,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:16,256 INFO L93 Difference]: Finished difference Result 5719 states and 7256 transitions. [2023-11-12 02:07:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-12 02:07:16,257 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.052631578947368) internal successors, (210), 19 states have internal predecessors, (210), 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 75 [2023-11-12 02:07:16,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:16,289 INFO L225 Difference]: With dead ends: 5719 [2023-11-12 02:07:16,290 INFO L226 Difference]: Without dead ends: 5708 [2023-11-12 02:07:16,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=411, Invalid=1149, Unknown=0, NotChecked=0, Total=1560 [2023-11-12 02:07:16,293 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 516 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:16,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 970 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:07:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2023-11-12 02:07:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 2493. [2023-11-12 02:07:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2492 states have (on average 1.3318619582664526) internal successors, (3319), 2492 states have internal predecessors, (3319), 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 02:07:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3319 transitions. [2023-11-12 02:07:16,733 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3319 transitions. Word has length 75 [2023-11-12 02:07:16,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:16,734 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 3319 transitions. [2023-11-12 02:07:16,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.052631578947368) internal successors, (210), 19 states have internal predecessors, (210), 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 02:07:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3319 transitions. [2023-11-12 02:07:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 02:07:16,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:16,739 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:16,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:16,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-12 02:07:16,946 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:16,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash 233710586, now seen corresponding path program 1 times [2023-11-12 02:07:16,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:16,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810836155] [2023-11-12 02:07:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:16,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:07:17,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:07:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:07:17,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:07:17,142 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:07:17,143 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 02:07:17,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-12 02:07:17,149 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:17,153 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:07:17,240 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-12 02:07:17,247 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated [2023-11-12 02:07:17,247 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-12 02:07:17,248 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated [2023-11-12 02:07:17,248 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-12 02:07:17,248 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-12 02:07:17,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:07:17 BoogieIcfgContainer [2023-11-12 02:07:17,275 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:07:17,276 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:07:17,276 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:07:17,276 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:07:17,277 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:40" (3/4) ... [2023-11-12 02:07:17,279 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 02:07:17,280 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:07:17,281 INFO L158 Benchmark]: Toolchain (without parser) took 37921.12ms. Allocated memory was 138.4MB in the beginning and 352.3MB in the end (delta: 213.9MB). Free memory was 74.6MB in the beginning and 151.5MB in the end (delta: -76.9MB). Peak memory consumption was 138.3MB. Max. memory is 16.1GB. [2023-11-12 02:07:17,282 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 138.4MB. Free memory is still 108.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:07:17,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.36ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 74.3MB in the beginning and 132.9MB in the end (delta: -58.5MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2023-11-12 02:07:17,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.67ms. Allocated memory is still 167.8MB. Free memory was 132.9MB in the beginning and 130.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:17,283 INFO L158 Benchmark]: Boogie Preprocessor took 39.58ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 128.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:17,284 INFO L158 Benchmark]: RCFGBuilder took 771.11ms. Allocated memory is still 167.8MB. Free memory was 128.1MB in the beginning and 107.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 02:07:17,287 INFO L158 Benchmark]: TraceAbstraction took 36574.54ms. Allocated memory was 167.8MB in the beginning and 352.3MB in the end (delta: 184.5MB). Free memory was 107.1MB in the beginning and 152.6MB in the end (delta: -45.5MB). Peak memory consumption was 139.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:17,287 INFO L158 Benchmark]: Witness Printer took 4.56ms. Allocated memory is still 352.3MB. Free memory was 152.6MB in the beginning and 151.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:07:17,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 138.4MB. Free memory is still 108.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.36ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 74.3MB in the beginning and 132.9MB in the end (delta: -58.5MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.67ms. Allocated memory is still 167.8MB. Free memory was 132.9MB in the beginning and 130.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.58ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 128.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 771.11ms. Allocated memory is still 167.8MB. Free memory was 128.1MB in the beginning and 107.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 36574.54ms. Allocated memory was 167.8MB in the beginning and 352.3MB in the end (delta: 184.5MB). Free memory was 107.1MB in the beginning and 152.6MB in the end (delta: -45.5MB). Peak memory consumption was 139.1MB. Max. memory is 16.1GB. * Witness Printer took 4.56ms. Allocated memory is still 352.3MB. Free memory was 152.6MB in the beginning and 151.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 25]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 116. Possible FailurePath: [L124] unsigned int a, b, r; [L125] a = __VERIFIER_nondet_uint() [L127] b = 234770789 [L129] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=4] [L59] COND TRUE a3 == (unsigned char)0 [L60] na = na - 1 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=3] [L61] COND TRUE a2 == (unsigned char)0 [L62] na = na - 1 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=2] [L63] COND TRUE a1 == (unsigned char)0 [L64] na = na - 1 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=1] [L68] nb = (unsigned char)4 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=1, nb=4] [L69] COND FALSE !(b3 == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, na=1, nb=4] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=0] [L83] COND TRUE i < na VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L89] COND TRUE i < nb VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=155] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=256] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=256] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=256] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=0, na=1, nb=4, partial_sum=256] [L95] COND TRUE partial_sum > ((unsigned char)255) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=0, na=1, nb=4, partial_sum=0, r0=0] [L104] i = i + (unsigned char)1 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=1, i=1, na=1, nb=4, partial_sum=0, r0=0] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L83] COND FALSE !(i < na) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L89] COND TRUE i < nb VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=0] [L91] COND TRUE i == (unsigned char)1 [L91] partial_sum = partial_sum + b1 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=1, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L104] i = i + (unsigned char)1 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=82, r0=0, r1=82] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L83] COND FALSE !(i < na) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L89] COND TRUE i < nb VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=0, r0=0, r1=82] [L92] COND TRUE i == (unsigned char)2 [L92] partial_sum = partial_sum + b2 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82] [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82, r2=254] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=2, na=1, nb=4, partial_sum=254, r0=0, r1=82, r2=254] [L104] i = i + (unsigned char)1 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=254, r0=0, r1=82, r2=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L83] COND FALSE !(i < na) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L89] COND TRUE i < nb VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=0, r0=0, r1=82, r2=254] [L93] COND TRUE i == (unsigned char)3 [L93] partial_sum = partial_sum + b3 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254] [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=3, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L104] i = i + (unsigned char)1 VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L107] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) VAL [\old(a)=155, \old(b)=234770789, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; VAL [\old(a)=155, \old(b)=234770789, \result=-4060217344, a0=4294967451, a1=0, a2=0, a3=0, a=155, b0=234770789, b1=917073, b2=3582, b3=13, b=234770789, carry=0, i=4, na=1, nb=4, partial_sum=13, r0=0, r1=82, r2=254, r3=13, r=234749952] [L129] RET, EXPR mp_add(a, b) [L129] r = mp_add(a, b) [L131] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.4s, OverallIterations: 26, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4864 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4864 mSDsluCounter, 7722 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5610 mSDsCounter, 423 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4970 IncrementalHoareTripleChecker+Invalid, 5393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 423 mSolverCounterUnsat, 2112 mSDtfsCounter, 4970 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1534 GetRequests, 1216 SyntacticMatches, 7 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2217 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2493occurred in iteration=25, InterpolantAutomatonStates: 230, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 25 MinimizatonAttempts, 9486 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 2241 NumberOfCodeBlocks, 2241 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 2559 ConstructedInterpolants, 13 QuantifiedInterpolants, 16842 SizeOfPredicates, 60 NumberOfNonLiveVariables, 2306 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 44 InterpolantComputations, 20 PerfectInterpolantSequences, 1705/2623 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 02:07:17,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/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_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/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 de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:19,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:20,037 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-12 02:07:20,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:20,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:20,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:20,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:20,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:20,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:20,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:20,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:20,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:20,106 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:20,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:20,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:07:20,109 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:20,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:20,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:20,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:07:20,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:20,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:07:20,112 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:07:20,112 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:07:20,113 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:07:20,113 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:20,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:07:20,114 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:20,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:20,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:20,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:20,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:20,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:20,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:20,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:07:20,118 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:07:20,118 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:07:20,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:20,119 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:07:20,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:20,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:20,121 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:07:20,121 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:20,121 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_06b109f9-8c69-4af4-84e4-403e27253e6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6decccd91c37b79cf607a5f07869bb0707e08de203e3ce6759a25f4e6e01ba [2023-11-12 02:07:20,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:20,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:20,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:20,578 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:20,578 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:20,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b109f9-8c69-4af4-84e4-403e27253e6d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/bitvector/byte_add_2-2.i